ID#

LOC

DESCRIPTION

B1.75 CHM

EGLI & CO., 1 "MILLIONAIRE" Four Register, Automatic Stepped Wheel, Mechanical, 1903, Switzerland, 539, 17x52x28 cm, Brass, 6 digit, Buy, Dr. Margaret Kennedy, (75).

The Millionaire was invented in 1893 by Otto Steiger and was the first direct multiplying calculator to be commercially successful. Between 1894 and 1935, 4,655 millionaires were sold.

Use. One turn of the crank automatically multiplies the accumulator by a single digit specified by a pointer in the upper left hand corner of the machine. The pointer is reset for each digit in the multiplier until the computation is complete.

B3.76

CHM

Chevalier Charles Savier Thomas, 1 "Arithmometer", Three Register, Stepped Wheel, Mechanical, ca 1850, England, 1583, 10x18x58 cm, Brass, Wooden case, Buy, Peter Delahar Antiques, (76).

In 1820, Chevalier Charles X. Thomas of Colmar designed and introduced the first multiplication machine made commercially available for general sale. Although it was not patented until 1851, the main features of the 1820 design remained unaltered.

The mechanism has three parts, concerned with setting, counting, and recording respectively. Any number up to 999,999 may be set by moving the pointers to the numbers 0 to 9 engraved next to the six slots on the fixed cover plate. The movement of any of these pointers slides a small pinion with ten teeth along a square axle, underneath and to the left of which is a Leibniz stepped wheel.

The Leibniz wheel, a cylinder having nine teeth of increasing length, is driven from the main shaft by means of a bevel wheel, and the small pinion is thus rotated by as many teeth as the cylinder bears in the plane corresponding to the digit set. This amount of rotation is transferred through one of a pair of bevel wheels, carried on a sleeve on the same axis, to the ‘results’ figure wheel on the back row on the hinged plate. This plate also carried the figure wheel recording the number of turns of the driving crank for each position of the hinged plate. The pair of bevel wheels is placed in proper gear by setting a lever at the top left-hand cover to either "Addition and Multiplication" or "Subtraction and Division." The ‘results’ figure wheel is thereby rotated anti-clockwise or clockwise respectively.

Use. Multiplying 2432 by 598 may be performed as follows: Lift the hinged plate, turn and release the two milled knobs to bring all the figure wheels to show zero; lower the hinged plate in its position to the extreme left; set the number 2432 on the four slots on the fixed plate; set the lever on the left to "multiplication" and turn the handle eight times; lift the hinged plate, slide it one step to the right, and lower it into position; turn the handle nine times; step the plate one point to the right again and the turn the handle five times. The product 1,454,336 will then appear on the top row, and the multiplier 598 on the next row of figures.

4.76

CHM

1 Gunter Rule, 2-3 Part, Gunter Rule, Craft, ca 1800 England, 5x60x.5 cm, wood, Buy, Peter Delahar Antiques,  (76).

About 1607 Edmund Gunter devised a scale that was to be the predecessor of the modern slide rule. In 1623 he published a description of this scale that is composed of two scales of the logarithms from 1 to 10 placed end to end. Although Napier conceived of the logarithm allowing multiplication or division to be accomplished by addition or subtraction, Napier relied on look up tables.

Use. Multiplication is carried out by using a pair of dividers to measure a distance, the multiplier, along the rule and add it to another distance, the multiplicand, forming the combined distance, the product, on the rule. The accuracy of an answer is limited by the length of the rule and the user’s ability to resolve a number.

Marked B4 and B50.79 (wr #).

B5.76

CHM

Stanley, 1 "Fuller’s Spiral Slide Rule", Spiral, 2-3 part, Slide Rule, Craft, 1902, England, 9x9x33 cm, Cardboard, Mahogany, Brass, Screw on handle, case, Buy, Historical Technology Inc, (76).

Designed in 1878 by Professor George Fuller, the logarithmic line is arranged spirally on the surface of a cylinder. The logarithmic line is in 50 turns, giving a working length of 41 feet 8 inches. All numbers of four figures either have a mark upon the scale or are midway between two marks, so that results accurate to four figures are easily obtained.

Use. By means of movable cylinders any length of spiral line may be at once transferred to any other part of the scale, and multiplications and divisions containing a series of factors can be worked with facility. Logarithms of numbers are given by means of a scale on the longer index arm together with a circular scale on the first cylinder, so that powers and roots are obtainable. The surface of the middle cylinder bears printed tables of decimal equivalents, natural sines, etc.

B6.76  

J. Sang, 1 "Platometer" Planimeter, Multiple part, Areal Measure, Mechanical, ca 1860, England, 9x15x37 cm, brass, wooden case, magnifying glass, Buy, Peter Delahar Antiques, (76).

This instrument for directly measuring an area bounded by an irregular curve is based on an idea developed by the Bavarian engineer J. M. Hermann in 1814. The first commercially successful devices were made by Ernst of Paris. In 1851, John Sang of Kirkcaldy invented and made a "platometer" resembling the planimeter of Ernst.

Use. Operation is based on continuous integration. A curve is traced using the pointer, with the area read off on the dial after the complete perimeter has been traversed. As the pointer is moved the rollers that measure distance on the conical shaft calculate the product of the vertical distance times the horizontal distance. As a curve is traversed in a clockwise direction, the top area is integrated in a positive direction. On the return trip the integration is negative and the net value is provided.

B7.76 CHM

Burroughs, 1 "Burroughs Model 5", Two Register, Keyed Wheel, Mechanical, USA, 5-146-1088, 28x25x12 cm, Black, Metal,, Buy, City Office Equipment, (76).

B8.76  

Burroughs, 1 "Burroughs" Single Register, Keyed Wheel, Mechanical, USA, A342273, 18x25x27 cm, , Buy, City Office Equipment, (76).

B9.76  

Felt & Tarrant Manufacturing Co., 1 "Comptometer", Single Register, Keyed Wheel, Mechanical, 1914, USA, 37x28x15 cm, Green, Metal, Buy, City Office Equipment Co., (76).

The Comptometer was invented in 1887 by Dorr E. Felt of Chicago and claims to be the first successful key-driven adding and calculating machine.

Use. For each digit a push button from 1 to 9 is selected which rotates a Pascal-type wheel with the corresponding number of increments. Numbers are subtracted by adding the complement (shown in smaller numbers). The carrying of tens is accomplished by power generated by the action of the keys and stored in a helical spring, which is automatically released at the proper instant to perform the carry.

Through effective marketing and training of skilled operators versed in complement arithmetic at Comptometer Schools, these machines became the workhorse of the accounting profession in the first part of the century. They never successfully advanced into the electro-mechanical era, but remained purely mechanical, two-function adding and subtracting machines.

B10.76

CHM

Monroe Calculating Machine Co., 1 "Monroe Electric Calculator No. 1", Three Register, Keyed Rotary, Electro-Mechanical, USA, 336948, 38x31x24 cm, Buy, City Office Equipment, (76).

B11.76 CHM

Monroe Calculating Machine Co., 1 "Monroematic" Four Register, Automatic Keyed Rotary, Electro-Mechanical, USA, 506781, 18x23x34 cm, Gray, Metal, Buy, City Office Equipment, (76).

B12.76 CHM

Friden, 1 "Friden Calculator Model D-8", Four Register, Automatic Keyed Rotary, Electro-Mechanical, USA, 202762, 38x26x20 cm, Buy, City Office equipment, (76).

B13.76 CHM

Monroe, 1 "High Speed Adding Calculator", Three Register, Keyed Rotary, Electro-Mechanical, USA, 15x25x24 cm, Black, Buy, City Office Equipment, (76).

B14.76 CHM

Burroughs, 1 "Burroughs Adding Machine Model A", Two Register, Keyed Wheel, Mechanical, USA, A605824, 22x15x12 cm, Black, Metal, 5 Digit, Buy, City Office Equipment, (76).

B15.76 CHM

Underwood, 1 "Standard Typewriter No. 5" Typewriter, Mechanical, USA, 22x30x30 cm, Buy, City Office Equipment, (76).

B16.76  

IBM, 1 "IBM" Typewriter, Electro-Mechanical, USA, 112-42085, 26x44x40 cm, Gray, Justowriter Corp On Motor Housing, Buy, City Office Equipment, (76).

B17.78

CHM

EGLI & CO., 1 "Millionaire", Four Register, Automatic Stepped Wheel, Mechanical, ca 1910, Switzerland, 1523, 18x29x76 cm, Brass, 10 Digit, Buy, George Nelson, (78).

See B1.75

B19.78

CHM

1 Set Drawing Instruments, Fixed, Rule, Parallel rule, Compass, Craft, England, 20x11x4 cm, Steel & Brass, Fitted velvet & leather Case, Buy, Historical Technology Inc., (78).

Cased English drawing instruments made in the second half of the l9th century. Brass and steel instruments, ruling pen with ivory handle; l3 separate items in lift-out tray. Small boxwood rule in space below. Rosewood veneered case and instruments in fine condition except that the large compass is missing its pivot locking nut and the brass has become a bit dull.

B20.78

CHM

W.H. Harling, 1 Rolling Parallel Rule, Parallel Fixed, Rule, Craft, ca 1890, England, 4x33x8 cm, Steel, Walnut Case, Buy Historical Technology Inc., (78).

Cased presentation of an English rolling parallel rule. Pasted to the inside cover is the presentation certificate, "Bradford Technical College Prize Awarded to Fred Inman at the Annual Examination, 1893, by order of the Lords of the Committee of Her Majesty’s most honourable privy council on education."

B21.78  

1 Navigator’s Sector, 2-3 Part, Sector, Craft, England, 33x6x1 cm, Boxwood With Brass Hinge, 21 Scales On both Sides and Outside Edges, Buy, Historical Technology Inc., (78).

The sector is used to solve problems of proportion and works on the principle of similar triangles. Sectors were made with a variety of scales for use in calculation by navigators, surveyors, gunners, and draughtsmen. At first sight they look like a jointed rule usually made of ivory, brass, wood, or sometimes silver. First described by both Galileo in Italy and Thomas Hood in England, the sector was in use by 1600.

Use. A pair of dividers is necessary to read the relationships on all sectors. This instrument is marked: "Chords, Sec, Lines, Tangents, tan, Ver Sine, Sines, & Num." The scale layout permits this sector to be used as a Gunter rule as well, although it is not laid out to follow any of the five editions of Gunter, but is close to the example in Stone (B18.78).

B22.78

CHM

Burroughs Adding Machine Company, 1 "Burroughs" Single Register, Keyed Wheel, Mechanical, ca 1920, USA, A335701, 15x30x25 cm, Black, Metal, Complement Arithmetic Nine Digits, Buy, City Office Equipment, (78).

B23.78 CHM

Friden, 1 "Friden Model 132" Four Register, Automatic Keyed Rotary, Transistor, USA, 3235, 26x45x54 cm.

B24.78  

1 Parallel Rule Parallel, Fixed, Rule, Craft, ca 1870, 45x6x1 cm, Rosewood and Brass, Buy, (78).

B25.78  

DG Marketing Ltd, 1 "International Metric Converter", Table, Manipulable, Craft, 1978, Hong Kong, 10x8x6 cm, Black, Plastic, Buy, (78).

B26.79

CHM

1 Soroban, Single Register, Bead, Manual, 4x11x29 cm.

B27.79

CHM

1 Napier’s Bones, Table, Manipulable, Craft, ca 1700, England, 8x6x2 cm, Wood, Bones and Box, Buy, Historical Technology Inc., (79).

These small instruments for facilitating the multiplication and division of large numbers were invented by John Napier, Laird of Merchiston in Scotland, and are described in his RABDOLOGIAE, published in 1617. He wrote that the multiplication and division of great numbers is troublesome, involving tedious expenditure of time, and subject to "slippery errors." His tables reduced these difficulties to simple addition and subtraction, and won immediate recognition. A set of Napier’s bones are usually made of boxwood or ivory and often contained in a box or case that would fit in a pocket. A set usually contains 10 rods, plus extras representing squares and cubes.

Use. Addition is accomplished by reading the appropriate bones along the diagonal. To obtain a product of 224 x 44, the rods 2, 2, and 4 are put alongside each other, and the result is read off by combining the numbers in the fourth row -- 0/8, 0/8, 1/6 -- for the correct answer 896. This is repeated and the two products added together to give 9856. The bones are sometimes associated with an abacus to provide a store in the multiplication process.

B29.77 CHM

KEUFFEL & ESSER, 1 "Thatcher’s Calculating Instrument 4012", Spiral, 2-3 Part, Slide Rule, Craft, ca 1920, USA, 5106, 13x13x63 cm, Wood, Varnished Paper, and Brass, Instrument and Wood Case, Buy, Historical Technology Inc, (77).

Patented in 1881 by Edwin Thatcher, an 1884 instruction book notes, "The originary rule in use is 12 inches long, with radii of 11 and 5 l/2 inches, the divisions of which are cut by hand, copying from a machine divided plate. In the present instrument the radii are 60 and 30 feet, the divisions of which are printed directly from machine divided plates. Those plates contain over 33,000 divisions, calculated to seven places of decimals from Babbage’s tables by using a common multiplier, every line being subjected to correction for error of screw and temperature variations, so that possibly every line center is within .0001 inch of its true place."

The instrument consists of a cylindrical slide, which admits of both rotary and longitudinal movement within an open metallic framework of 20 equidistant triangular bars. The bars are connected to rings at their ends which admit rotation within standards attached to the base. Upon the slide are wrapped two complete logarithmic scales, each of which is divided into 40 parts of length equal to half that of the slide. The parts follow each other in regular order around the cylinder, and the figures and divisions which constitute any part of the right are repeated on the left, one line in advance.

Use. By the rotary and longitudinal movement of the slide any of its divisions may be brought opposite to or in contact with any division on the fixed scales. The divisions on the upper lines are transferred to the slide by means of a pointer fitting over the bars, which is also convenient for retaining the position of any division on either line while the slide is being revolved into the required position. Near the commencement of each scale on the slide is a heavy black mark designed to catch the eye readily during the rapid movement of the parts.

B30.77  

L.&I.D., 1 Timber Calculating Slide RuleLinear, 2-3 Part, Slide Rule, Craft, ca 1800, England, 60x5x1 cm, Boxwood, Buy, Historical Technology Inc., (77).

Use. On one side, the A line on the rule and the B and C lines on the slider are each numbered twice from 1-10, reading from left to right. The fourth line E is inverted, and is so arranged that 144 is opposite 1 and 10 on the A line. So that if length in feet on E be set opposite thickness in inches on C, the volume in cubic feet is read off on B opposite width in inches on A. The B line is subdivided into tenths, while the A, C, and E lines are subdivided into fourths. On the other side of the rule are A, B and C lines with the girt line (marked D) numbered from 4-40 and bearing various gauge points. The A and D lines are subdivided into fourths. The two edges of the rule bear scales of inches divided into quarter-inches.

B31.79

CHM

Selective Educational Equipment Corp, 1 "SEE CALCULATOR", Single Register, Pascal Wheel, Mechanical, 1968, USA, 18x4x1 cm, Buy, Selective Educational Equipment Corp, (79).

A small replica of the Pascal-type adder made to illustrate the mechanism. For a description of the original Pascal machine, see B150.80.

B32.52

CGB

KEUFFEL & ESSER, 1 "Slide Rule 689", Linear, 2-3 part, Slide Rule, Craft, ca 1950, USA, 848689, 32x6x1 cm, Rule and Leather Case, Buy.

Gordon’s slide rule used at MIT. Marked B32.79

B33

CHM

Casio, 1 "Casio Mini Card Calculator" Five or More Registers, Computer-controlled, IC, Japan, 5x8 cm, Calculator and Case, Buy.

B34.79 CHM

Hewlett Packard, 1 "HP-35" Pocket Calculator, Five or More Registers, Computer-controlled, IC, USA, 3x8x16 cm, Buy.

The HP-35 was the first hand-held scientific calculator small enough to fit in a pocket. It is something of a miniaturized version of earlier desktop scientific calculators such as the Friden. A microprocessor is programmed to carry out the calculator’s functions.

Use. Functions include logarithms, exponentials, trigonometric, decimals, scientific notation, and degrees and radians are used. Reverse Polish notation replaces conventional parenthesis.

B35.79 CHM

Aluminum Housewares Co. Inc., 1 "Fairgrove Adder", Single Register, Pascal wheel, Mechanical, 1975, Hong Kong, 2x5x10 cm, Plastic, Buy, (79).

B36.79 CHM

1 "EXACTUS", Single Register, Pascal Strip, Mechanical, ca 1950, England, 7x11x.5 cm.

A linear form of the simple Pascal two-function-calculating device that uses complement arithmetic. See also B150.80.

Use. Addition or subtraction is carried out by dialing the numbers starting with the least significant. A carry is performed by moving the final digit around the corner to the next linear register.

B37.79  

Foto-mem Inc., 1 Slide RuleLinear, 2-3 part, Slide Rule, Craft, Japan, 2x14x.5 cm.

B38.79

CHM

Precision Adding Machine Co. Inc., 1 "Quixsum Adding Machine Model C", Single Register, Pascal Wheel, Mechanical, ca 1930, USA, 2643, 7x18x48 cm, Quixsum, Case, And Stylus, Buy.

The Quixsum is a good example of how the stepped wheel principle of Pascal can be used to operate any special measures, not necessarily base ten. In this case it adds English units of feet and inches. See also l50.80.

Use. To add a number to the register, the appropriate digit is dialed. The result is displayed in a notch at the top of each wheel.

NOTE: Has box in cabinet below display shelves.

B39.79

CHM

Yanasa, Tokei, Keiki Co. Ltd., 1 "Geigy Pedometer", Single register, Escapement ratchet, Mechanical, Japan, 3d x1 cm.

B40.79

CHM

Monroe Calculating Machine Co., 1 "Monroe" Calculator, Four Register, Automatic Keyed Rotary, Electro-mechanical, USA, J421231, 15x30x26 cm, Gray, 8 Digit, Buy, (79).

B41.79 CHM

1 Gunter Rule, 2-3 Part, Gunter Rule, Craft, 15x3x.5 cm, Boxwood, Buy, (79).

Pocket-size version of Gunter's rule, also known as "line of numbers". The regular version of these were generally two feet long. The scale is marked off using Napier's principle of logarithms. Numbers can be multiplied by adding their lengths on this scale.

See B4.76.

B42.80

CHM

Burroughs, 1 "Burroughs" Printing Adding Machine, Two Register, Keyed Wheel Mechanical, USA, 9A431239, 28x38x40 cm, Buy, (80).

William S. Burroughs introduced the keyboard type of adding and listing machine about 1880. It was designed to type a column of figures and then almost automatically type the sum total.

Use. (See British Science Museum exhibit and description).

B43.80  

Bing, 1 "Bing No.2" Typewriter, Mechanical, ca 1930, Germany, 15x28x38 cm, 1926 patent pending, Case and Typewriter, Buy, (80).

B45.79 CHM

Sharp Corporation, 1 "Elsi MATE El-8048" Electronic Calculator Soroban, Five or More Registers, Computer-controlled, IC, 1979, Japan, 921, 30x9x2 cm, Plastic, Buy.

B46.79 CHM

Royal London Co Ltd, 1 "Executive Thought Organizer", Toy, Transistor, Japan, 11d x10 cm, Plastic.

B49.79

CHM

The A. Leitz Co., 1 Planimeter Variable Ratio Polar Planimeter, Multiple part, Planimeter, Mechanical, 1900 c, Switzerland, 64567, 2x4x28 cm, German Silver and Steel, Instrument and Fitted Cloth Covered Case, Buy, Historical Technology Inc, (79).

This instrument for measuring the area of any plane figure was invented by Professor Jacob Amsler in 1856. It is a proportional instrument in that the unit can be changed by altering the radius of the tracing arm.

Use. The weighted point is fixed and the tracing pointer guided exactly once round the outline of the figure whose area is to be measured. The difference of the readings on the graduated roller before and after this operation gives the area of the figure in units dependent on the setting of the tracing arm.

B50.79 CHM

J.S.M., 1 Navigator’s Gunter Rule, 2-3 Part Gunter Rule, Craft, ca 1800, England, 60x5x.5 cm, Buy, Historical Technology Inc., (79).

B51.79 CHM

Stanley, 1 "Fuller’s Spiral Slide Rule" Spiral, 2-3 Part, Slide Rule, Craft, ca 1880, England, 33x10x10 cm, paper, wood, metal, cylindrical case and rule, Buy, Historical Technology Inc., (79).

See B5.76

B52.79  

Manlove, Alliott, Fryer & Co., 1 "Boucher’s calculating circle" Circular, 2-3 Part, Slide Rule, Craft, France, BUY, (79).

B53.80

CHM

Lowry Mfg. Co., 1 "Lowry-bowyer Telemeter", Multiple Part, Mechanical, ca 1900, USA, 15x78x7 cm, Aluminum and Wood, Instrument, Mahogany Base, Cover Buy, Historical Technology, Inc., (80).

A version of the classical trigonometer signed and dated "THE LOWRY MFG. CO/BOSTON, U.S.A./PAT. 1887, ‘92, ‘96". It has two four and a half inch compass bearing dials, one fixed at the end of the twenty-six inch long graduate slotted base plate, the other sliding, and each with graduated pivoted arms of l8 3/8" radius. It was intended for the analog solution of the plane triangle knowing two angles and included side, two sides and the included angle, or three sides. Thus it was useful for problems both of navigation and gunnery.

B54.80  

1 Navigator’s Gunter Rule, 2-3 Part, Gunter Rule, Craft, ca 1800, England, 5x60x.5 cm, Darkened Boxwood, Minor Warping And Edge Chipping, Buy, Historical Technology Inc., (80).

See B4.76

B55.80  

Dring & Fage, 1 Inland Revenue Slide Rule, Four-sided, 2-3 part, Slide Rule, Craft, 1825, England, 60x5x1 cm, Boxwood, One ink Stain, Buy, Historical Technology Inc., (80).

The rule is specially arranged for the use of excise officers and maltsters in gauging computations. Slide rules for this purpose were first devised by Thomas Everard in 1683, and modified by Vero, Leadbetter and others. In this example, four scales appear on one side and the other side is blank.

B56.80

CHM

KEUFFEL & ESSER, 1 "Thatcher’s Calculating Instrument", Spiral, 2-3 Part, Slide Rule, Craft, 1925, USA, 5870, 16d x58 cm, Wood, Brass, And Varnished Cardboard, Calculator, Case, And Magnifying Glass, Buy, Historical Technology Inc., (80).

See B29.77

B57.80

CHM

Felt & Tarrant Mfg Co., 1 "Comptometer", Single Register, Keyed Wheel, Mechanical, ca 1920, USA, J341613, 36x22x15 cm, Bronze, Metal, Buy, (80).

See B9.76

B59.80 CHM

Fowler & Co., 1 "Fowler’s Calculator" Circular, 2-3 Part, Slide Rule, Mechanical, 5660, 6d x1 cm, Buy, Ampersand, NY, (80).

B61.80

CHM

J.R. Bunnell, 1 Telegraph Key And Receiver, Electro-mechanical, ca 1900, USA, 10x10x20 cm, Key and Receiver, Buy, Victor, Co., (80).

B62.80

CHM

Marchant, 1 "Marchant" Four Register, Automatic Keyed Rotary, Electro-mechanical, ca 1950, USA, B-M-112311, 40x25x31 cm, Metal, Buy, (80).

B63.80

CHM

Corona, 1 "Corona No. 3" Portable Typewriter, Mechanical, ca 1920, USA, 480206, 23x25x12 cm, Black, Metal, Carriage folds up over keyboard, Buy, (80).

B64.80  

Burroughs, 1 "Burroughs" Visible Printing Adding Machine, Two Register, Keyed wheel, Mechanical, ca 1910, USA, 1-43288, Black, Metal, Bevelled Glass, and Plexi, Removable Printer, Buy Victor, Co, (80).

See B42.80

B65.80 CHM

Molle Typewriter Co., 1 "Molle No. 3" Typewriter, , Mechanical, USA, 6824, 25x28x33 cm, Black, Metal, Case and Typewriter, Buy, (80).

B66.80

CHM

Swift & Anderson Inc., 1 Gunnery Level, 2-3 part, Sight and Level, Mechanical, ca 1910, Lead, Brass and Glass, Buy, Ron Hoffmann, NY, (80).

B67.80 CHM

Adler, 1 "Favorit 2" Portable Typewriter, Mechanical, ca 1940, Germany, 2103, 36x28x11 cm, Black, German Keyboard, Case and Typewriter, Gift, Burt Still.

B68.80

CHM

W & E Co., 1 Telegraph Receiver and Relay, Electro-mechanical, ca 1890, USA, 10x20x12 cm, Receiver and Relay, Buy, Victor, Co., (80).

B69.80

CHM

Heath and Co. Ltd., 1 Sextant, 2-3 Part, Location-finder, Mechanical, ca 1920, England, W450, 35x25x17 cm, Certified at The National Physics Laboratory, Case and Sextant, Buy, Joe Stamps, NY, (80).

B70.67  

Digital Equipment Corp., 1 PDP-6 Signed Photo, Photo, Transistor, 1967, USA, Gift PDP-6 Engineers.

B71.74  

Digital Equipment Corp., 1 PDP-8 Flip-flop R201, Logic Module, Transistor, 1966, USA, 1x15x7 cm.

B72.74  

1 Vacuum Tube Logic Module M.D.Type 8, Logic Module, Electronic, 1950 USA, 108, 10x30x35 cm.

B73.80

CHM

1 Field Microscope, Mechanical, France, 5x5x15 cm, Brass, Glass, Wood, Wooden Box and Microscope, Buy, Ron Hoffman, NY, (80).

B74.77  

Cohen, Harold, 4 "Amsterdam Suite", Artwork, 1977, 3 Line Drawings, 1 Colored, Framed Lithographs, Gift, Harold Cohen.

B75.80  

MARX, 1 "Dial Typewriter", Toy, Mechanical, ca 1950, USA, 15x15x30 cm, Buy, J Stamps, NY, (80).

B76.80 CHM

1 "BABY CALCULATOR", Single Register, Pascal Strip, Mechanical, ca 1950, USA, 1x8x6 cm, Tin, Buy, J. Stamps, NY, (80).

See B36.79

B77.72  

Digital Equipment Corp., 1 PDP-11/20 Module Artwork, Artwork, Transistor, 1969, USA, 100x94 cm, Mylar in Plexi, Gift J O’Loughlin.

B78.80

CHM

A.B. Dick, 1 "The Edison Mimeograph No. 1", Mechanical, ca 1900, USA, 13x33x43 cm, Wood Case and Frames, Complete Cased Set with Roller Etc Buy, (80).

B79.80

CHM

JJ&EF Johnson Co., 1 Telegraph Key J-44, Electro-mechanical, USA, 12x8x4 cm, Gift, Clyde Still.

B80.80

CHM

Trinks-brunsviga, 1 "Trinks-brunsviga" Brunsviga, Three Register, Rotary, Mechanical, ca 1940, 39329, 15x12x36 cm, Gift, Declan and Margrit Kennedy.

The German patent of W T Odhner, 1891, was acquired by Messrs Grimme, Natalis & Co, and was embodied in a machine known as the "Brunsviga." This example is a further adaptation and sits on a wood board that was part of a disappearing desk top.

Use. Although the machine performs multiplication by repeated addition as in the Thomas type, the use of the Odhner wheel instead of the Leibniz toothed wheel led to a more compact design. The Odhner wheels fit very close together on the axle on the back. A setting lever, the end of which projects through a slot in the cylindrical portion of the cover plate, forms part of each wheel. If a lever is set against any figure (1 to 9) of its slot, a corresponding number of pins are made to project from its wheel. When the operating handle is turned, these pins gear with small toothed wheels of the product register, which in turn gear with the number wheels in front. The product register is mounted on a longitudinally movable carriage arranged in front of the machine, which carries a second counter for registering the multiplier or the quotient. The handle is turned in a clockwise direction for addition and multiplication, and counter-clockwise for subtraction and division.

B81.80

CHM

Bell Punch Co. Ltd., 1 "Plus" Single Register, Keyed Wheel, Mechanical, England, A7-1783, 15x30x40 cm, Green, Metal, Model #909/C/V/504.929/A, Buy, (80).

An electrified modification of the Comptometer. See B9.76.

B82.80

CHM

C & E Layton, 1 "Tates Arithmometer", Three Register, Stepped Wheel, Mechanical, England, 1184, 10x17x58 cm, Brass and Wood, Wood Case and Brass Machine with Removable Handle, Buy, Peter Delahar Antique, (80).

This machine, which is of the Thomas type, embodies the modifications patented in 1884 and 1903 by S Tate, who in 1883 was the first in England to manufacture this type of calculating machine. His patents were later taken over by C and E Layton.

Use. See B3.76.

B83.80

CHM

Metallograph Corp., 1 "Musketry Rule of 1918" Linear, 2-3 Part, Slide Rule, Craft, ca 1918, USA, 3x13 cm, Black, Metal, Neck String and Rule, Buy, Ron Hoffman, NY, (80).

B84.79 CHM

Thales, 1 "Thales Patent Calculator", Four Register, Automatic Rotary, Mechanical, Germany, S 153248, 15x30x20 cm, Gray, Metal, Buy, (79).

A "Brunsviga" type machine made in Germany. See B80.80

B85.79 CHM

Reliable Typewriter & Adding Machine Corp., 1 "Addometer" Single Register, Pascal Wheel, Mechanical, USA, 1x5x30 cm, Black, Metal, Case, Calculator And Instruction Booklet, Buy, Historical Technology Inc., (79).

See Bl50.80

B86.79 CHM

Olivetti, 1 "Olivetti" Two Register, Keyed Wheel, Electro-mechanical, Argentina, Summa quanta 20, 15x15x30 cm, Plexi-glass, Metal, Paper Tape, Buy, City Office Equipment, (79).

B87.79

 

Contina Ag Mauren, 1 "Curta" Three Register, Rotary, Mechanical, Liechtenstein, 70588, 10d x12 cm, Black, Metal, Gift, Brian Randall.

The Curta is the ultimate example of the rotary mechanical calculator. Its small size requires better manufacturing technology than any other mechanical calculator. Model I had an 8-digit input setting, 6-digit counter, and 11-digit accumulator. Model II had an 11-digit setting, 8-digit counter, and 15-digit accumulator. Prior to the electronic calculator, the Curta was the only 4-digit portable calculator and as such was especially popular for use at car rallies.

B88.80

CHM

Wales the Adder Machine Co., 1 "Wales Visible Adding Machine", Two Register, Keyed Wheel, Mechanical, USA, 20x24x38 cm, Metal and Plexi Replacements for Glass, Removable Printer, Buy, City Office Equipment, (80).

A copy of the Burroughs printing-adding machine. See B42.

B89.80 CHM

Allen-Wales Adding Machine Corp, 1 "Allen-Wales Printing Adding Machine", Two Register, Keyed Wheel, Mechanical, USA, 77-26208, 20x20x40 cm, Black, Metal, Buy, (80).

See B42.

B90.79 (76)

CHM

Monroe Calculating Machine Co., 1 "Monroe No. 1" Three Register, Keyed Rotary, Electro-mechanical, USA, 20x25x30 cm, Metal, Buy, City Office Equipment, (76).

B91.76 CHM

Hans W. Egli, 1 "Millionaire", Four Register, Automatic Stepped Wheel, Mechanical, Switzerland, 1073, 18x29x76 cm, Brass, 8 Digit, Calculator with Stand, Buy, (79), D-MR2.

See Bl.75.

B92.80

CHM

1 Drafting Set, Fixed, Parallel Rule, Scale, Compass, Craft, ca 1800, England, 15x17x30 cm, Brass, Wood, Marble, Cornelius Conklin (owner), Boxed with Box of Tools, Pens, Etc., Buy, (80).

B93.80 CHM

1 Abacus, Single Register, Bead, Manual, China, 22x16x3 cm, Wood, 9 Digit, Removable Wooden Backboard, Buy, (80).

The abacus is the earliest known computing device and the first hand-held calculator. It postdated the invention of the decimal system by the Egyptians circa 3000 BC. The Greeks and Romans built and used the abacus based on Hindu-Arabic numerals.

Unlike earlier notations and devices using stones and marks, the abacus utilizes positional notation, including the representation of zeros, differences, with capabilities for multiplication and division. The Chinese abacus has beads in groups of 5 and 2, representing decimal digits. The Japanese first modified this to 5 and 1 and then 4 and 1.

B94.80

CHM

1 Soroban, Single Register, Bead, Manual, 10x2x40 cm, Wood and Bamboo, 21 Digits, Buy, (80).

B95.80  

1 Abacus, Single Register, Bead, Manual, Taiwan, 2x4x6 cm, Green, Marble and Brass, 9 Digit, Abacus on Marble with Instruction Booklet, Buy, (80).

B96.80  

Reliable Typewriter and Adding Machine Corp., 1 "Addometer" Single Register, Pascal Wheel, Mechanical, USA, 1x5x30 cm, Dark Gray, Metal and Fiber, Fiber Case and Instruction Booklet, Buy, (80).

See Bl50.80.

B97.80

CHM

KEUFFEL AND ESSER, 1 "E.A. Sperry’s Calculator Circular, 2-3 part, Slide Rule, Craft, USA, S650, 6d x2 cm, Pocket Watch Style, Buy, (80).

B98.80

CHM

1 Navigator’s Gunter Rule, 2-3 part, Gunter Rule, Craft, 2x15 cm, Cream, Ivory, Buy, (80), D-Bells.

See B4.76

B99.80  

Stanley Rule & Level Co., 1 Timber Slide RuleLinear, 2-3 Part, Slide Rule, Craft, USA, 4x30 cm, Brass and Warranted Box Wood, Buy, (80).

See B30.77

B100.80  

Stanley Rule & Level Co., 1 Timber Slide RuleLinear, 2-3 Part, Slide Rule, Craft, USA, 4x30 cm, Brass and Warranted Boxwood, Cracked, Warped and Stained, Buy, (80).

See B30.77

B101.80 CHM

MARX, 1 "Junior Typewriter", Toy, Mechanical, USA, 28x13x18 cm, Gray and Blue, Tin, Bent & Rusty, Buy, (80).

B102.80

CHM

1 Navigator’s Sector, 2-3 Part, Sector, Craft, 4x16 cm, Cream, Ivory and Brass, Chipped, Buy, (80).

See B21.78

B103.80 CHM

Welch, 1 Teaching Slide RuleLinear, 2-3 Part, Slide Rule, Display, Craft, USA, 2x23x125 cm, Black, Masonite, With Hangers, Buy, (80).

B104.80

CHM

T.S. & J.D. Negus, 1 Parallel Rule, Fixed, Rule, Craft, 8x45 cm, Brass, Inscribed with Degrees Buy, The Packet Boat, Boston, (80).

B105.80

CHM

1 Rolling Parallel Rule, Fixed, Rule, Mechanical, 6x46x2.5 cm, Brass, Pat. No. 160100, Wooden Case and Instrument, Buy, The Packet Boat, Boston, (80).

NOTE: Case in cabinet below display shelves.

B106.80

CHM

1 Drawing Instruments, Fixed, Compass, Parallel Rule, Scale, Craft, ca 1850, England, 16x7x2.5 cm, Green, Shagreen Case, Brass, Steel, Ivory, Silver & Ebony, Fitted Case, 8 Instruments, Rule, Sector & Parallel Rule, Buy, Arthur Middleton, London, (80).

B107.80

CHM

J Thomlinson Ltd Glasgow, 1 "Thomlinson’s Equivalent Paper Slide Scale" Linear, 2-3 Part, Slide Rule, Craft, ca 1940, Scotland, 8x58x1.5 cm, Brown, Wood, One Sided with Two Moving Rules, Buy, Peter Delahar, (80).

This specialized rule was designed for the paper and printing industry. The A scale indicated length, B scale the breadth, and area in square inches was read off the C scale.

The D scale was used to read off translations of inches to centimeters, kilos to pounds, 480 and 500 sheet reams, and various weights of different standard paper cuts.

B108.80 CHM

Dring and Fage, 1 "Leadbetter Slide Rule" Linear, 2-3 Part, Slide Rule, Craft, ca 1800, England, 31x3x2 cm, Brown, Boxwood, Four Sided Slide Rule with Slides on each Side, Buy, Peter Delahar.

B109.80  

1 Slide RuleCoggeshall, 2-3 Part, Slide Rule, Craft, ca 1800, England, 4x33x.5 cm, Boxwood and Brass, Hinged with Two Slides, Buy, Peter Delahar, (80).

A modified Coggeshal type slide rule with one brass and one wood slide. Navigational scales including meridian, chords, latitudes, and hours are inscribed. Freeth and Co. Brimingham is overstamped.

B110.80

CHM

J.F. Fuller, 1 "Palmer’s Improved By Fuller Computing Scale" Circular, 2-3 Part, Slide Rule, Craft, 1847, USA, 28x28x.5 cm, Cream and Black, Cardboard, "Fuller’s Time Telegraph" is on the Reverse, Buy, Peter Delahar, (80).

"Palmer’s Computing Scale" patented in 1843 by Aaron Palmer was improved and produced by J.E. Fuller in 1847. This model is printed from the original Palmer plate with Fuller’s name and own patent added to the engraving, done by George C. Smith, 186 Washington St., Boston. The reverse side, "Fuller’s Time Telegraph" was patented by him in 1845.

Use. "Palmer’s Computing Scale" was used to calculate square measures, cubic measures, timber measures, grain measures, liquid measures and interest rates from 3 percent to 10 percent on a daily and monthly basis. "Fuller’s Time Telegraph" (on the reverse) was used to calculate time lapse in days or weeks between any two given dates. In concert these two measures would be useful to dealers in grain, alcohol and other commodity trading.

B112.80

CHM

Fowler & Co, 1 "Fowler’s Textile Calculator" Circular, 2-3 Part, Slide Rule, Craft, ca 1900, England, 14398, 6.5d x.7 cm, Chrome, Glass, Paper, Two-sided Circular Rule, Buy, Maitland Antiques, Portobello Rd., (80).

Short scale type of "Fowler’s Textile Calculator" with two scales on one side. The other side holds a table equivalency for weft, looms, and reeds.

B113.80 CHM

Lewis & Tylor, Limited, 1 "Hydralculator", Linear, 2-3 Part, Slide Rule, Craft, ca 1940, England, 7x19x.5 cm, Cream, Cardboard, One Rule on one Side, Case and Rule, Buy, Portobello Rd., (80).

"Hydralculator", patent number 396,533, published by Lewis & Tylor Ltd., Gripoly Mills, Cardiff, the manufacturers of "underwriter" super fire fighting hose, for the use of their "Friends in the Fire Service."

Use. To find the quantity of water discharged for any given nozzle and a known pressure, place press on scale "b" opposite nozzle on scale "a’, and read discharge through window in slide. To find height of jet for given pressure and nozzle diameter, proceed as above and read opposite arrow in center of slide, the height given on scale "d" for the appropriate nozzle.

B114.80 CHM

1 "Circular Concise Slide Rule" Circular, 2-3 Part, Slide Rule, Craft, ca 1960, Japan, 8d cm, White, Plastic, No. 28; Reverse has Standard Equivalency Tables, Buy, Portobello Rd., (80).

B115.80  

1 Music Box, , Mechanical, 1980, Switzerland, 6.5dx5 cm, Plastic and Aluminum, Plays Jingle Bells, Buy, (80).

B116.80

CHM

Blickensderfer, 1 "Featherweight Blickensderfer", Mechanical, ca 1900, USA, 153497, 25x30x13 cm, Aluminium, 501 Special Stamped on Base, Buy, Portobello Road, (80).

The "Blick" was the first typewriter intended to be readily portable. It was designed by Georges Blickensderfer and patented in 1890 and first sold in 1893.

Use. Each key had three positions, upper and lower case and a figure that positioned three levels of the printing wheel.

B117.80

CHM

1 Jacquard Loom Mechanism, Card-controlled, Loom, Model, Mechanical, ca 1805, France, 16x36x40 cm, Wood, Brass, and Steel, Paper Cards Added by Peter Delahar, Buy, Peter Delahar, (80).

B118.80 CHM

L.M. Ericsson & Co., 1 Printing Telegraph Receiver, Electro-mechanical, ca 1890, Sweden, 7640, 36x42x17 cm, Brass, Wood, Beveled Glass, Key, Brass Spool, Paper Tape, and Receiver, Buy, Arthur Middleton, (80).

B119.80  

1 Navigator’s Sector, 2-3 Part, Sector, Craft, ca 1800, England, 16x3.5x.3 cm, Ivory, Lee & Son, Portsea Engraved, Buy, Portobello Rd, (80).

See B21.78

B120.80 CHM

C.W. Dizey, New Bond St London, 1 Proportional Rule and Protractor, Fixed, Rule, Protractor, Craft, ca 1890, England, 4.3x15.2x.2 cm, Ivory, Buy, Bermondsey Market, (80).

A protractor and architect’s proportions are inscribed on one side; engineer’s scale and vernier on the other.

B121.80

CHM

United Chemical Engraving Co. Ltd., 1 Proportional Rule and Protractor, Fixed, Rule, Craft, 1932, England, 5917, 15x5x.2 cm, Cream, Plastic, Inscribed D.A.E. Carter, Buy, (80).

Protractor and table with set scales at l/20,000, 100,000, and 250,000 inscribed on one side. The other side has scales of one half inch and one inch to the mile, a scale of 1/20,000 in meters and listing of metric equivalents.

B122.80  

1 Parallel Rule, Fixed, Rule, Craft, ca 1890, England, 3.5x15x.2 cm, Ebony and Brass, Buy, Maitland Antiques, (80).

B123.80

CHM

R. Waddington, Coventry, 1 Lord’s Calculator Circular, 2-3 Part, Slide Rule, Craft, England, 7d x1.5 cm, Chrome and Glass, Buy, Maitland Antiques, (80).

B124.80

CHM

Fowler’s (calculators) Ltd Sale, 1 "Fowler’s Calculator" Circular, 2-3 Part, Slide Rule, Craft, ca 1920, England, 6d x1 cm, Chrome, Glass and Paper, Long Scale Calculator, Buy, Maitland Antiques, (80).

B125.80  

The Cleveland Twist Drill Co., 1 Circular Slide RuleCircular, 2-3 Part, Slide Rule, Craft, ca 1920, USA, 8d x.3 cm, Cream, Plastic, Printing worn off, Buy, Portobello Rd, (80).

This specialized rule is copyright 1911, The Cleveland Twist Drill Company.

Use. The rule indicated drill speeds for wrought iron, machinery steel and soft tool steel. One side shows revolutions per minute for diameters ranging from one-sixteenth to three inches for both high speed and carbon steel drills. The other side shows tap and drill sizes and the decimal equivalent for inch divisions.

B126.80  

Johnson, 1 "Johnson Artifical Light Exposure Calculator", Circular, 2-3 Part, Slide Rule, Mechanical, England, 6.5d x.2 cm, Cream, Plastic, Buy, Portobello Rd, (80).

Use. 1. Set at start. 2. Select wattage notch and dial clockwise to "stop"; 3. Repeat for distance of lamp from the subject; 4. Turn over and repeat for angel of light film speed and subject; 5. Read exposure against F/Ratio.

B127.80  

Thorens, 1 Musical Disk, Mechanical, 1980, Switzerland, 11d x.1 cm, Black and Yellow, Tin, Buy, (80).

B128.80

CHM

Morris, 1 "Morris’s Measuring Instrument", 2-3 Part, Linear Measure, Mechanical, England, 5.5d x1 cm, Metal, Paper, Cloth, Glass, Case and Instrument, Buy, Maitland Antiques, (80).

B129.80

CHM

Tacro Inc., 1 Map Measure and Compass, 2-3 Part, Linear Measure, Mechanical, Germany, 7x3.5x.5 cm, Chrome, Paper, Glass.

B130.80

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, ca 1900, England, 6x16x2.5 cm, Black Case, Brass, Steel, Wood, Cardboard, 7 Instruments and Case, Buy, Bermondsey Market, (80).

B131.80

CHM

ADDI-COSMOS, 1 "B.U.G Calculator", Single Register, Pascal Strip, Mechanical, 5223, 4.5x20.5x4 cm, Brass, Steel, Wood, fabric, Instrument and Case, Buy, Portobello Rd, (80).

B132.80

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, England, 7x15x2 cm case, Wood, Fabric, Brass, Steel, 4 Instruments and Wood Case, Buy, (80).

B133.80

CHM

1 Drawing Instruments, Fixed, Drawing Instruments, Craft, England, 10x19x4 cm box, Wood, Brass, Velvet, 10 Instruments and Case, Buy, (80).

B134.80

CHM

1 Pantograph, Multiple part, Proportional Recorder, Mechanical, ca 1850, England, 85x15x8 cm Case, Brass and Wood, Engraved, J. Davis Cheltenham, Instrument and Case, Buy, Arthur Middleton, (80).

B135.80 CHM

Odhner, 1 "Original Odhner" Odhner, Three Register, Rotary, Mechanical, ca 1920, England, 239-868452, Grey, Metal, Buy, Bermondsey Market, (80).

B136.81 CHM

W. Egli, 1 "Millionaire", Four Register, Automatic Stepped Wheel, Mechanical, ca 1920, Switzerland, 4493, Brass, Electrified Eight-digit Model, Stand, Motor, and Calculator, Buy, Historical Technology, (81).

See B1.75

B137.81

 

CHM

American Can Company, 1 "American Adding Machine", Two Register, Mechanical, ca 1920, USA, 31850, Black, Metal, Digits worn, Buy, D. Stillings/BRIEUX, (81).

Essentially a Pascal-like single register machine, only the digits are grooved and stay in place showing the entry (a second register) until they are cleared.

SEE B180.81 (Both marked the same)

B138.81

CHM

1 Scale and Ruled Compass Drawing Instrument, Fixed, Scale and Compass, Craft, USA, 3x12 cm, Metal, "W.B.Pierce Co. Civil Engineers", Buy, (81).

B140.80

CHM

Depose H.C., 1 Map Mileage Reader, 2-3 Part, Linear Measure, Mechanical, USA, 12x3.5dx.5 cm, Metal, Paper and Glass, Buy, (81).

B141.80

CHM

1 Counting Beads, Single Register, Bead, Manual, USA, 27x19.5x1 cm, Red, Black, and Green Beads, Wood and Metal, Paint worn off beads, beads missing on top, Buy, (81).

B142.81  

Bennett, 1 Typewriter, Mechanical, USA, 27x12x4 cm, Black with Yellow Letters, Metal, Case and Typewriter, Buy, (81).

Very compact with three positions for the keys and a wheel device. Small sized ribbon and removable carriage.

B143.81

CHM

Bunzel Mfg, Vienna, 1 Thomas Arithmometer, Three Register, Stepped Wheel, Mechanical, ca 1910, Austria, distributed by Dietzgen, USA, Wood, Metal, Case, Arithmometer, Digits, Buy, Historical Technology, (81).

See B3.76.

B144.81  

EUGENE DIETZGEN CO., 1 "DIETZGEN MULTIPHASE STYLE-M IMPROVED DECIMAL TRIG TYPE LOG LOG RULE" Log-log, 2-3 Part, Slide Rule, Craft, 1954, USA, Cat. No. 1738, 5x32x.4 cm, Aluminum and Plexi, Buy, Lincoln City, Ore, (81).

B145.81  

Dietzgen, 1 Slide Rule, Linear, 2-3 Part, Slide Rule, Craft, USA, 26x3x1 cm, Wood and Paper, Buy, (81).

B146.81  

Stanley Rule and Level Co., New Britain, Conn, 1 Coggeshall Rule, 2-3 Part, Slide Rule, Craft, USA, 32x4x.4 cm, Wood and Brass, Buy, (81)

B147.81  

Richardson and Co., Middleton, Co., 1 Coggeshall Timber Slide Rule, 2-3 Part, Slide Rule, Craft, USA, 4x31.5x.3 cm, Boxwood, Brass, and Steel, Buy, NE Trade Fair, (81).

B148.81  

1 Spelling and Counting Board, Single Register, Bead, Toy, Craft, ca 1950, USA, 23d x 2 cm, red, Plastic and Wood, Buy, Lincoln City, Ore., (81).

B149.81  

1 "BABY CALCULATOR", Single Register, Pascal Strip, Mechanical, USA, 14.5x7.5x.7 cm, Black, Gold and Red, Metal, Buy, Lincoln City, Ore, (81).

B150.81

CHM

Roberto Guatelli, 1 Pascal Adder, Single Register, Pascal Wheel, Replica, Mechanical, 1645, France, Bronze, Buy, R. Guatelli, (81).

The first mechanical adding machine built by the French physicist and mathematician, Blaise Pascal.

Use. The dials show the French monetary unit, the livre, which was divided into 12 deniers, each subdivided into 20 sols. The essential part of the machine was its decimal carry; each toothed wheel moved forward one unit (one-tenth of a revolution on each wheel except those of deniers and sols) when the previous wheel had completed one revolution. Subtraction was based on complementary numbers that could be revealed by moving the strip at the top of the calculator.

B151.81  

Electric Specialty Mfg Co., Cedar Rapids, Ia., 1 Telegraph Key, Transduction, Electro-mechanical, ca 1900, USA, 7x8x18.5 cm, black, metal, Buy, (81).

B152.81

CHM

SELSI, 1 Map mileage reader and compass, Analog Calcula, 2-3 part, Linear measure, Mechanical, ca 1930, Germany, 11x3.5x.5 cm, The handle also serves as a pencil. Buy, (81).

B153.81

GKB

A & W Smith, 1 Pantograph, Analog Calcula, Multiple part, Proportional planar copier, Mechanical, ca 1820, England, 59x7x5.5 cm, mahogany case, Brass, 3 brass scales, ivory and brass roller, and pins, Buy, Peter Delahar, (81).

An usual all brass example of the rare form of pantograph devised and made by William and Andrew Smith and sold by William Harris c 1820. "A rare type of brass pantograph," P. Delahar.

B154.81 CHM

Corona Typewriter Co., Inc. Groton, N.Y., 1 "CORONA FOUR" Typewriter, TRANSDUCTION, Typewriter, Mechanical, ca 1920, USA, H201124, 26x31x11 cm, Black, case and ribbons missing, Buy, Oregon, (81).

B155.81

CHM

Burroughs, 1 "Burroughs Calculator" Adding machine, Digital Calcula, Single Register, Keyed Wheel, Mechanical, ca 1910, USA, 5-607901, 18x23x30 cm, Black and green, Metal, Stands on legs at a tilt for ease of operation. Buy, Rte 20 antique store in Wayland, (81).

B156.80

CHM

Burroughs, 1 "The Burroughs Adding and Listing Machine" Adding Machine, Digital Calcula, Two Register, Key Punch, Mechanical, ca 1900, USA, Black, Metal with beveled glass sides, Buy, Victor, Co., (80).

B157.81  

Burroughs, 1 "The Burroughs Adding and Listing Machine" Adding Machine, Digital Calcula, Two Register, Keyed Wheel, Stand and motor, Mechanical, ca 1910, USA, Black, Metal with beveled glass, Adapted for motorized operation, Stand, motor, calculator, printer, Buy, Oregon, (81).

B158.81

CHM

J. Halden & Co., Ltd., 1 "HALDEN CALCULEX" Circular Slide Rule, Analog Calcula, 2-3 part, Slide rule, Craft, ca 1910, England, 6 cm diameter, Metal ring with glass discs covering paper scales, Aluminum case with velvet interior and leather covered 95 page manual only measuring 5.5 cm square, plus instrument, Buy, The Antiquarian Scientist, (81).

Cajori in his "history of the Logarithmic Slide Rule" (1909) lists this unique instrument as No. 211 and notes the manual.

B161.81

CHM

HANS W. EGLI CO., 1 "MILLIONAIRE" Calculator, Digital Calcula, Four Function, Stepped Wheel, Mechanical, ca 1900, Switzerland, 272, 18x29x76 cm, wooden case, brass calculator, 8 digit, wooden stand, case, and calculator, Buy, Antiquarian Scientist, (81).

See B1.75

B164.81

CHM

Signal Electric Mfg. Co., 2 "Signal Telegraph Instrument" Telegraph Keys and Sounders, Telegraphy, Electro-mechanical, ca 1920, USA, 11x10x16 cm, Wooden base, brass, and other metals, Buy, Westford.

B165.81  

Simplex Typewriter Company, 1 "The New Simplex Typewriter No. 1" Typewriter, Typewriter, Mechanical, ca 1920, USA, 22x12x6 cm, red, yellow, and black, wooden base with metal, cardboard case and typewriter, BUY, Knotty Pine Antique Market, West Swanzey, NH, 15.

The simplex is a small, inexpensive, home typewriter that only holds paper less than seven inches wide. U.S. patent numbers 1138427, 1204912, 1521408, 1865288, 1869426, and 1957373.

Use: From the Directions for Operating in the case: "First: Hold the machine with rack side toward you. Push carriage to the left to starting point. When doing this see that dog does not catch in rack. Insert paper between rollers from the front. Put finger on key of letter desired and swing it into notch in rim of typecase near the dog: Press downward to print. To make a space without printing, press down on any key near to but not in the notch. To ink apply only a drop of ink to each pad with the end of a matchstick or toothpick. Be careful not to bend the pads down so far as to prevent them from springing back into position. Use only Simplex Ink which will be supplied at 10 cents per tube, cheap ink destroys the face of the type. Do not oil. If keyplate sticks, take a rag moistened with vaseline and hold against underside of keys at the notch and twirl type plate around a few times. If the carriage does not move forward freely, apply a little vaseline to the carriageway where it rubs. Caution! Keep oil or vaseline away from rubber type and ink pads. Oil will swell and destroy the letters."

B166.81 CHM

Simlex Typewriter Co., Inc., 1 "Simplex Portable Typewriter Special Demonstrated Model S" Typewriter, Mechanical, ca 1930, USA, 24x8x16 cm, Green and red, Metal, Buy, Knotty Pine Antique Market, West Swanzey, (81).

See B165.81.

B167.81 CHM

Wolverine Supply and Manufacturing Co., 1 "Adding Machine", Digital Calcula, Single Register, Pascal Strip, Mechanical, ca 1950, USA, 10x15x23 cm, Red, blue, and cream, Tin, Buy, Knotty Pine Antique Market, (81).

B168.81  

1 Navigator’s Sector, Analog Calcula, 2-3 Part, Sector, Craft, ca 1880, USA, 3.5x16x.3 cm, wood, BUY, Knotty Pine Antique Market, W. Swanzey, (81).

B169.81

CHM

1 Navigator’s Sector, Analog Calcula, 2-3 Part, Sector, Craft, ca 1880, USA, 3.5x16x.3 cm, Wood, Buy, Amherst Outdoor Antique Market, (81).

B170.81

CHM

1 Coggeshall Slide Rule, Analog Calcula, 2-3 Part, Slide Rule, Craft, ca 1850, USA, 4x33x.5 cm, Wood and Brass, No makers name, wood cracked, shows signs of real wear, Buy, Knotty Pine Antique Market, West Swanzey, NH, (81).

B171.81

CHM

Pickett & Eckel, Inc., 1 Slide Rule, Analog Calculator, 2-3 Part, Log-log, Craft, 1960, USA, 405171, 31x6x3 cm, Yellow, Aluminum and Plexi, Box, Case, instruction pamphlet, and guarantee, Buy, Westford flea market, (81).

B172.81

CHM

1 Abacus, Digital Calculator, Single Register, Bead, Manual, 29x14x2.5 cm, Wood, 13 digit, Buy, Amherst outdoor antique market, (81).

B173.81 CHM

Burroughs, 1 "Burroughs" Adding Machine, Digital Calculator, Two Register, Keyed Wheel, Mechanical, ca 1950, USA, 8A193393, 22x37x20 cm, Green and Black, Metal, 8 digits with paper tape printing, Buy, (81).

B174.81 CHM

Felt & Tarrant Mfg Co., 1 "Comptometer", Digital Calculatpr, Single Register, Keyed Wheel, Mechanical, ca 1895, USA, 505, Walnut, Brass & Other Metals, Buy, Peter Delahar, (81).

An early Comptometer with the springs showing on the upper keys. The keys are molded differently on alternative rows to give the operator a "feeling" of relative location. The walnut cabinetry and tooling was clearly a hand-made.

B175.80

CHM

Siemens Brothers & Co., London, 1 Printing Telegraph, Links and Switches, Electro-mechanical, ca 1900, England, 12145, Wood and brass, Does not work, Buy, Portobello Rd., London, (80).

B176.80

CHM

1 Sector, Analog Calcula, 2-3 Part, Sector, Craft, ca 1623, England, 9 inch; 240x50x5 mm, Brass, Buy, Peter Delahar, (1981).

Nine inch brass sector as described by Edmund Gunter (1581-1626) in 1623. Unsigned by probably made by Elias Allen in 1623.

B178.81

CHM

1 Counting Beads, Digital Calculator, Single Register, Bead, Manual, 37x2x44 cm, red and black beads, wood and metal, 9 rows by 10 digits, Buy, Joe Stamps, NY, (81).

B179.81 CHM

Reliable Typewriter & Adding Machine Co., 1 "Addometer", Digital Calcula, Single Register, Pascal Wheel, Mechanical, USA, 1x5x30 cm, Brown with red and white dials and yellow numbers, Metal, Case, Instructions, Stylus, and Calculator, Buy, Joe Stamps, NY, (81).

See B150.80

B180.81

CHM

American Can Company, 1 "American Adding Machine", Digital Calcula, Two Register, Tab, Mechanical, ca 1920, USA, 22x22x19 cm, Black with green, Metal, Rusted and worn, Buy, J Stamps, NY, (81).

See B137.81 (Both marked the same)

B181.81  

1 Abacus, Digital Calcula, Single Register, Bead, Manual, 29x14x2.5 cm, Wood, 13 digit, Buy, Amherst outdoor antique market, (81).

B182.81

CHM

Burroughs, 1 "Burroughs Calculator", Digital Calcula, Single Register, Keyed Wheel, Mechanical, ca 1910, USA, #204128, 230x100x360 mm, Black, Metal, Buy, Reading flea market, (81).

Replica of an early Comptometer. See B9.76.

NOTE: Marked B179.81

B183.81 CHM

SELSI, 1 Map mileage reader and compass, Analog Calcula, 2-3 part, Integrator, Mechanical, ca 1930, Germany, 110x35x5 mm, The handle also serves as a pencil. Buy, Reading flea market, (81).

B184.81  

Digital Equipment Corporation, 1 2 PM Flip Flop, Transistor, 1966, USA, R20YC.

B185.81 CHM

Data Products, 1 Core Memory, 8 K by 19 bit 3W-3D 18 mil planar memory.

B186.81 CHM

Cal Research Computer, 1 Tube and circuit, Philips tube, 00667001, TC3-C5.

B187.81

CHM

Automatic Adding Machine Co., 1 "Golden Gem Adding Machine", Digital Calcula, Single Register, Linear Pascal, Mechanical, 1904, USA, 56950, 105x75x18 mm, Metal, Complementary numbers scratched in, Case, instructions, and calculator, Buy, Colorado Springs, (81).

Interesting directions regarding complementary numbers and the use of the simple machine for multiplication.

B188.81

CHM

1 "Precise" Adding Machine, Digital Calcula, Single Register, Pascal Strip, Mechanical, ca 1910, USA, 105x120x175 mm, Silver and Bronze, Metal, Stylus and calculator, Buy, (81).

Pat No. 2402549

B189.81  

A W Faber, 1 Slide Rule, Analog Calcula, 2-3 Part, Slide Rule, Craft, ca 1935, Germany, 98350, 33x9x270 mm, Ivory, Ivory bonded to wood, Inch and centimeter scales are on opposite sides, Leather case and rule, Buy, D-Bells.

B190.81 CHM

Ideas Unlimited, 1 "Horse-meter", Analog Calcula, 2-3 Part, Circular Slide Rule, Craft, 1951, USA, 135 mm diameter, Orange, gray and yellow, Paper, Buy, Colorado Springs, (81).

"Directions for use: (1) Consult daily Racing Form for speed ratings, weights and class; (2) Figure rating for each horse in race as follows: (a) turn red dial to best speed rating in past 30 days; (b) turn blue dial to class in key race; (c) Turn yellow dial to weight difference of (a) race and today’s race; (c) Add (or subtract) figures (a) (b) (c). This is horses rating. (3) Horse with at least 2 points aove rest is the choice in this race; (4) Play only if final odds are 2/1 or better; (5) Best results will be had by avoiding 2 year old, maiden, fillies and mares, stakes, hurdle, turf and steeple races and races over 1 1/8 miles."

B192.81  

1 Section of the first Atlantic Telephone Cable, Transduction, Electro-mechanical, 1858, US, 95x18 mm diameter, Buy, (81).

Cyrus West Field (1819-1892) American merchant, promoter of the first Atlantic cable was botn in Stockbridge, Massachusetts. In 1854, he conceived the idea of the cable and secured a charter to organize the England and American companies. The British and American naval ships, HMS Agamemnon and the USS Niagara were secured to lay the cable. Five attempts were made between 1857 and 58. The first message transmitted, August 16, 1858, read, "England and America are united by telegraph. Glory to God in the highest and on earth peace and good will towards men." The Queen and the President of the United States exchanged congratulations, but the cable ceased working three weeks later. It was necessary for Field to raise new funds and make new arrangements. The great Eastern succeeded in laying a cable in 1866.

B193.81

CHM

A. Massim, Paris, 1 Music Box, Readable or Writable Memory, Mechanically stable, Cyclic, Mechanical, 1840, France, 30981, 343x160x120 mm, Black, Wood and brass fittings, Buy, (81).

The music box plays six tunes; Robin Adair, the Blue Bells of Scotland, The Campbells are Coming, Auld Lang Syne, Coming Through the Rye, and Bonnie Sweet Home.

B194.81

CHM

Aaron Palmer, Boston, 1 "Palmer’s Pocket Scale" Circular slide rule, Analog Calculator, 2-3 part, Circular slide rule, Craft, 1845, USA, 7x95x150 mm, Paper, Buy, Moskowitz, (81).

Palmer’s Pocket Scale with rules for its use in solving Arithmetical and Geometrical Problems preceded the large sized Fuller’s scale. See B110.80.

B195.81  

1 Excise slide rule, Moskowitz, (81).

B197.81  

1 "Enigma", Transducer.

B198.81 CHM

1 "Enigma"

B199.82 GKB

1 "Everard" slide rule, Analog Calculator, 2-3 part, Slide rule, Craft, ca 1720, England, 303x17x25 mm, Boxwood, The early form of Everard slide rule with two slides., Buy, Delahar, (82).

B200.82

CHM

Mileage reader, Analog Calculator, 2-3 part, Integrator, Mechanical, ca 1950, 35 mm diameter; 112 mm with handle, Chrome, glass, and paper, Buy, Portobello Rd, (82).

This mileage reader was clearly made for scientific map distance readings. On one side there are scales for 1:2000; 4000; 8000; and 10,000. On the other side the scales read 1:25,000; 50,000; 75,000; and 200,000.

B201.82

CHM

Chambon & Baye, 1 "TACHYLEMME" Table, Writable or Readable Memory, Mechanically stable, Cyclic, Craft, ca 1880, France, 175x100x35 mm, Black, Glass, wood, sliver plate and paper, Buy, Delahar, (82).

A calculating device with four printed cylinders 1-9; 10-90; 100-900; and 1000-9000 so arranged that percentages for every half percent from one to six percent can be read through slits. The total of say 6,216 at 4 percent could be figured by adding the sums shown in the four rows. One was presented to the Science Museum by M. Malassis in 1936. Chambon also introduced similar "calculators" for the multiplication tables, called "Multiplicateur Enfantin".

B202.82  

1 "The MP Handy Guide for Knitting and Crochet" Table, Readable or Writable Memory, Paper, Fixed, Craft, ca 1930, England, 118x90x2 mm, Metal and paper, Stained and worn, Buy, Bermondsey market, (82).

Indicators can keep track of rows, increase, and times. Holes on the side provide a gauge for the needles. And a 4-and-a-half inch rule is along the bottom.

B203.82

CHM

Tavernier Gravet, 1 Mannheim slide rule, Analog Calculator, 2-3 part, slide rule, Craft, ca 1880, France, 260x28x8 mm, Boxwood with brass cursor, Buy, Delahar, (82).

Colonel Amedee Mannheim designed a slide rule with a cursor about 1850. Tavernier Gravet manufactured this in France and after 1880 exported a large number to England and Germany.

B204.82

CHM

1 slide rule, Analog Calculator, 2-3 part, slide rule, Craft, 9-37, 350x30x8 mm, German silver, Slide rule and wood case engraved with owners name, Buy, Maitland, (82).

An engineering surveyor’s slide rule primarily used for calculating distances.

B205.82  

Dring & Fage, 1 Slide Rule, Guagers slide rule, Analog Calculator, 2-3 part, Slide rule, Craft, England, 314x50x5 mm, Ivory, Buy, Maitland, (82).

Two-sided revenuers rule with two sliding gauges.

B206.82

CHM

Duss, 1 Slide rule, Guagers slide rule, Analog Calculator, 2-3 part, Slide Rule, Craft, England, 315x50x5 mm, Boxwood, Buy, Bermondsey Market, (82)

Similar to B205.

B207.82

CHM

Loftus, 1 Rule, Guagers rule, Analog Calculator, Single part, Rule, Craft, England, 260x30x30 mm folded, Boxwood, Buy, Bermondsey Market, (82).

B208.82

CHM

1 Guagers rule, Analog Calculator, Single Part, Rule, Craft, England, 260x30x30 mm folded, Boxwood, Buy, Bermondsey Market, (82).

B209.82  

T.O. Blake Ltd., 1 Guagers cased rule, Analog Calculator, Single Part, rule, Craft, England, 6 cylinders each 25 mm by 3 mm diameter that fit together, Boxwood with a leather case, Six rules in a fitted leather case, Buy, Bermondsey Market, (82).

B211.82 CHM

1 "Consul" Educated Monkey, Table, Readable or Writable Memory, Paper, Linear, Craft, 1916, USA, 139x148 mm, Red, Yellow, Blue and Brown, Tin, Buy, Jeremy Norman and Co., (82).

B212.82  

Jehu Hatfield, 1 Clock interest table, Readable or Writable Memory, Mechanically stable, Cyclic, Craft, 1844, USA, 300x450x170 mm, wood and paper, Buy, Jeremy Norman & Co., (82).

B213.82  

1 Ratchet Adder, Digital Calculator, Single Register, Ratchet, Mechanical, ca 1850, USA, 313x313x10 mm, Brown with Black ink, Brass and Cardboard, Buy, Jeremy Norman, (82).

B214.82

CHM

C. X. Thomas de Colmar, 1 Arithmometer, 1852, Buy, Peter Delahar, (82).

See B3.76

B215.82

CHM

Hamilton Watch Company, 1 Map Mileage Reader, Analog Calculator, 2-3 part, Linear measure, Mechanical, ca 1950, USA, 110x5mm 35mm diameter, Chrome, glass, paper, Model number 331, Buy, Garrison House Antiques, (82).

One-sided with two scales for centimeters and inches.

B216.82

 

CHM

1 Planimeter, Analog Calculator, Multiple Part, Areal Measure, Mechanical, ca 1900, Switzerland, 28460, 220x30x40mm case, Steel instrument, Engraved with Crosby Steam Gage & Valve Co., Boston, Swiss Manufacture, Buy, Garrison House Antiques, (82).

See B49.79

B217.82

 

CHM

Arnof, 1 Map Mileage Reader, Analog Calculator, 2-3 part, Linear Measure, Mechanical, ca 1935, Germany, 8x76 mm 35 mm diameter, Nickel, glass, and paper, Case and instrument, Buy, (82).

Two sided scale with nautical miles, kilometers and statue miles on one side and centimeters to kilometers and inches to miles or versiers on the other.

B218.82 CHM

Manloves, 1 "Boucher’s Calculator" Circular slide rule, Analog Calculator, 2-3 parts, Slide rule, Craft, England, 15mm x 50mm diameter, Nickel, glass and paper, Buy, (82).

B219.82  

Stanley Rule & Level Co., 1 Coggeshall Slide Rule, Analog Calculator, 2-3 Part, Slide Rule, Craft, USA, Model No. 12, 320x40x4 mm, Boxwood and Brass, Buy, Brimfield, (82).

See B146.81

B220.82 CHM

Hoffman, 1 Slide Rule, Analog Calculator, 2-3 Part, Slide Rule, Craft, Denmark, Model No. 601, 147x35x4 mm, Plastic, Case and Slide Rule, Buy, Brimfield, (82).

Distributed by R. W. Mitscher Co., Inc., Electronic & Electrical Supplies, Ellicott Square Building, Buffalo, New York.

B221.82

CHM

Addac, 1 "Addac", Digital Calculator, Single Register, Mechanical, USA, 5751, 205x135x140 mm, Black with Cream and Red Letters, Cover and calculator, Buy, Brimfield, (82).

Patent no. 1,661,605.

B227.82

CHM

1 "Biomate" Circular moving nomographs, Readable or Writable Memory, Mechanically Stable, Cyclic, 82, Japan, 110x90x12mm, Aqua and cream, plastic, Buy, (82).

B228.82  

Goody Manufacturing Co., 1 "Goody Magic Multiplier Pencil Box", Readable or Writable Memory, Paper, Cyclic, ca 1950, USA, 38dx230mm, blue and orange, paper, Buy, Amherst flea market, (82).

B229.82 CHM

Walt Disney Productions, 1 "Mickey Math", Readable or Writable Memory, Mechanically Stable, Linear, ca 1950, USA, 360x38x5mm, black and white, plastic, Buy, (82).

B230.82  

L. Appoullot, Saint-Birce-sous-Foret, Seine et Oise, France, 1 "Cercle a clacul d"appoullot"nomograph, Readable or Writable Memory, Mechanically Stable, Cyclic, ca 1890, France, 203d mm, painted metal, case and circle, Buy, Alain Brieux, (82).

B231.82

CHM

Wolverine, 1 "Modern Math Addition", Readable or Writable Memory, Mechanically Stable, Cyclic, ca 1950, USA, 154x180x97mm, red, metal, Buy, Museum Store, (82).

B233.82

CHM

A. M. Maurand, 1 "Le Prompt Calculateur des arts industriels et du commerce", Readable or Writable Memory, Paper, Random, ca 1863, France, 105d x 18mm, blue, pink, yellow and green cards, Brass, glass, cardboard, brass case with glass lid, 30 cardboard tables, Buy, Peter Delehar, (82).

B234.82

CHM

Stanley, 1 "Boucher’s Calculator" Circular slide rule, Analog Calculator, 2-3 part, Slide Rule, Craft, ca 1876, England, 50dx13mm, nickel, glass, leather and stain case, calculator, Buy, Peter Delahar, (82).

The model made by Stanley is an improvement by the addition of a third index hand on the back dial, which indicates the total movement of the front dial, so that continuous workings show a final result, either + or -, thus indicating the correct reading of the result.

B235.82

CHM

Stanley, 1 Slide rule for calculating annuities, Analog Calculator, 2-3 part, Slide Rule, 1860, England, 304x10x22mm, Boxwood, Case and slide rule, Buy, Peter Delahar, (82).

The device was described by Benjamin Beran (1822).

B236.82 CHM

Tavernier-Gravet, Rue Mayet, 19-Paris, 1 "Regle a Eclimetre" du Colonel du Genle Goulier Slide rule with a site, Analog Calculator, 2-3 part, Slide Rule, ca 1878, France, 186, 320x50x90mm, Boxwood and a metal instrument, Case, slide rule, and instrument, Buy, Peter Delahar, (82).

B237.82 CHM

1 "Calculator" Pascal strip, Digital Calculator, Single Register, Pascal strip, ca 1950, Germany, 85x7x138mm, gold, red, and black, metal, Buy, Amherst flea market, (82).

B238.82  

Sharp, 1 "ELSI MATE EL-835" Solar cell electronic calculator, Digital Calculator, 3-4 Registers, Electronic, 1982, Japan, 17095530, 54x96x3mm, metal, Buy.

B239.82

CHM

Panasonic, 1 "CompuVoice" Talking electronic calculator, Digital calculator, 3-4 registers, Electronic, 1982, Japan, 22300192, 75x27x143mm, metal, Gift, New York Decus.

B240.82

CHM

Stanley, 1 "Barnard’s Coordinate Spiral Slide Rule" Spiral Slide Rule, Analog Calculator, 2-3 Parts, Spiral slide rule, ca 1880, England, 83dx260mm, wood, paper mache, brass, Wooden case, handle, instrument, Buy, Peter Delahar, (82).

Similar to Fuller’s, but the logarithmic scale is repeated twice and occupies in all only about one-third of the helix. The upper part of the helix carries a sine scale.

B241.82 CHM

Palatine Engineering Co. Ltd. Liverpool, 1 "Bryan’s Patent Planimeter" Analog Calculator, Multiple Part, non-linear planimeter, ca 1880, England, 70x105x405mm, Brass, Case, instrument, five cams, track made my Peter Delahar, Buy, Peter Delahar, (82).

B242.82  

Oliver, 1 "The Oliver Typewriter Model 9" 1916, USA, 405x370x250mm, khaki, metal, Buy, (82).

The Oliver typewriter is the only successful down-strike-from-the-side class, It was invented by Rev. Thomas Oliver in 1888 and patented in the USA in 1892 and Great Britain in 18996. The Oliver Typewriting company was founded in 1895 with Model Number 1 (on view at the Science Museum). The models appeared in the following order No. 2 (1894), No. 3 (1898), No. 5 (1907), No. 7 (1915), No. 9 (1916) and the standard Model II ‘Speedster’ in 1922.

The 28 type-bars, each of which resembles an inverted U, are arranged in two banks to the right and left of the printing point, so providing complete visibility of the writing, the type striking on to the vertical centre line of the platen. Each bar carries three characters, the machine printing 84 characters by double shift. The use of a bar pivoted at each end is claimed to secure and preserve accurate alignment. The bars rest one within another and, as the length of the extremities vary, the shorter type-bars are provided with heavier type-heads with the object of equalizing the impressions. The paper cylinder is fitted with three rollers, the pressure of which can be released for adjusting the paper. The register pawl can be lifted to free the roller when linving by pencil. Single or double spacing is actuated by a striking motion operated by the marginal stop.

B243.82

GKB

Ludwig Spitz & Co., 1 "TIM Time is Money" arithmometer, Digital Calculator, 3-4 register, stepped wheel, ca 1880, USA, 420x200x160 mm, black, metal, eight digits, engraved The Oskar Muller Co. New York, Buy, Peter Delahar, (82).

B244.82 CHM

Dalton, 1 Adding and listing machine, Digital Calculator, 1-2 register, Pascal key, USA, Black, Metal, Buy, Amherst flea market, (82).

B245.82  

Hitachi, 1 c-mos i c, tie clasp, 1982?, Japan, Buy.

B248.82 CHM

Patrick Adie, Optician, Mathematical & Scientific Instrument Maker, Broadway Works, Westminster, London., 1 "Eidograph" pantograph, Analog calculator, Multiple part, Drawing instrument, Mechanical, c 1860, England, 33 3/4" long with two 29" long 1/2 inch square rods, brass, instrument and large hand-dovetailed case made form mahogany, trade label, instruction set, and original key, Buy, The Antiquarian Scientist, (82).

Each of the rods, marked ‘A’ and ‘B’ slip into corresponding channels of the pulleys of the body. Here their lengths are varied and rad by verniers in the pulleys. The length of the main body rod which pivots on a central circular support, can be set and read by a vernier. The pulleys move in unison by virtue of the adjustable stell band with brass fittings coursing over them. One very large weight of brass and lead is used to balance the main rod and two smaller weights for the two side rods.

The eidograph is essentially a more precise and versatile pantograph. Variable ratios can be set on the instrument for enlarging or reducing work. The eidograph was invented by William Wallace in 1801 based on the l7th century pantographThe eidograph is essentially a more preceise and versatile pantograph. Variable ratios can be set on the instrument for enlarging or reducing work. The eidograph was invented by Will

B249.82

CHM

1 protractor and T-square, analog calculator, 2-3 part, drawing instruments, mechanical, c 1830, USA, 23 1/2" with 6" radius protractor scale, brass, Buy, The Antiquarian Scientist, (82).

A nicely made brass t-square with an adjusting arm which allows it to be set to a particular angle as read off the protractor scale.

B250.82

CHM

1 Trigonometer, Analog Calculator, Multiple Part, Mechanical, c 1840, USA, 12"x6", brass, Buy, The Antiquarian Scientist, (82).

The instrument is constructed so that a swinging arm carrying two sight vanes pivots away from a stationary arm, also with two sight vanes, over an attached 90’ scale with an intricate grid for reading the sine of the subtended angle by vernier directly to three places. A bubble level on the stationary arm allows horizontal or vertical reading. A ratcheted chain counter is also fixed to the stationary arm. A removable box compass can be fitted onto either arm by a neatly devised, quick action device.

The instrument was once the equipment of a Virginia surveyor and retains a fine hand-worked character with great attention to detail, such as fine knurling of the many thumb screws. Smart illustrates a similar instrument by Francis Whiteley of Standardsville, Virginia on p. 165. Both examples are elaborations of Whiteley’s patent of 1836, but with the additions of the sine grid. The patent model and its type were made first, then the design with the sine grid, and finally the most advanced type with serial numbers and an added verneir on the swinging arm for reading the protractor scale as illustrated in Smart.

B251.82 CHM

Troughton, London, 1 proportional compass, Analog Calculator, 2-3 parts, drawing instruments, Mechanical, c 1800, England, 6 1/4inch long, Brass with stell points, hand-engraved, shaped sharkskin case and instrument, Buy, The Antiquarian Scientist, (82).

Edward Troughton (1753-1836), the ‘celebrated’ English instrument maker, is well known for his very fine astronomical and navigational instruments. In 1826, Troughton took in William Simms, and the firm flourished as Troughton 7 Simms, even after Troughton’s death.

The instrument is used for enlarging or reducing a drawing with ratios marked along the slot, set by moving the screw pivot in it.

B252.82

CHM

1 planimeter, Analog Calculator, multiple parts, Mechanical, planimeter and case, Buy, Margaret Weiner Kennedy, (82).

B258.82 CHM

1 Blaise Pascal "auvergnat" la famillle a l’oeuvre, Musee D’art de Clermont-Ferrant, 6 octobre - 8 novembre 1981, Buy, A Brieux, (82).

B259.83

CHM

J. Archbutt & Sons, 20 Bridge Road, Lambeth, 1 parallel rule, compass and rule, analog calculator, 2-3 part, parallel rule, craft, ca 1850, England, 44x150x2 mm, ivory, Buy, Woburn antiques show, (83).

B260.83  

The Lightning Adding Machine Co. Inc., Los Angeles, 1 "The Lightning Adder"Pascal wheel, Digital Calculator, Single Register, Pascal Wheel, Mechanical, ca 1950, USA, 350x90x45 mm, green and brown, plastic holder and metal adder, holder, mechanism, stylus, Buy, Colorado Springs, (83).

See 150.80 and 96.80.

B262.83

CHM

Addiator, 1 "Arithma", Digital Calculator, Single Register, Pascal Strip, Mechanical, ca 1935, Germany, 155x40x3 mm, Black and red, aluminum, case, stylus, instructions, and instrument, Buy, Colorado Springs, (83).

B263.83  

Globe Ticket Company, 4201 Brighton Blvd, Denver, Co., 3 punch card, advertisement on a calendar blotter, March 1960, November 1961, January 1962, USA,98x230 mm ,blotting paper, Buy, Colorado Springs, (83).

B265.83 CHM

1 Planimeter, Analog Calculator, two-three part, Planimeter, Mechanical, 290x110x20 mm, nickel, instrument and case, Buy, Tesseract, (83).

B266.83

CHM

Automatic Adding Machine Co., New York, 1 "Golden Gem Adding Machine"Pascal strip, Digital Calculator, Single Register, Pascal Strip, Mechanical, 1906, USA, 103x80x20 mm, red and green, metal, case and instrument, Buy, Woburn Antique Show, (83).

B267.83

 

CHM

The Adding Pencil Co., St. Louis, 1 The Adding Pencil, Model B, Digital Calculator, Single Register, Pascal Wheel, Mechanical, ca 1930, USA, 10dx155 mm, Orange, Metal, Paper instruction case and pencil, Buy, Colorado Springs, (83).

B270.83

CHM

S.A. Main BSc, 1 Ballistic Coefficient Slide Rule, Analog Calculator, 2-3 parts, linear slide rule, ca 1910, USA, 470x78x20 mm, yellow, Wood, paper, ivory and brass slide, hand lettered in red and black, Buy.

Top scale is the ballistic coefficient; bottom is coefficient of form; center sliding scale has weight in pounds and diameter in includes. Instructions: with Slide set the Diameter to the Coeff of Form; with Cursor set the value of Theta to the Weight; Read off Ballistic Coeff against Value of T. Reverse side has two sliders. Top stationery rule is ballistic coefficient. Slider has range-yards; time of flight-seconds; height of vertex - fee; angle of elevation or descent. Stationery rule has velocity reduced time in seconds. Slider has velocity and reduced elevation and reduced angle of descent. Botoom stationery rule has velocity. "Designed by S.A. Main, B.Sc.

B271.83

CHM

DeMarre, 1 Ballistic Slide RuleSlide Rule, Analog Calculator, 2-3 parts, Linear Slide Rule, ca 1910, USA, 420x70x15 mm, yellow, Wood, paper, brass, Hand written lettering, Buy.

Designed for solving DeMarre’s Formula:

.5

7 W V 1

T = ----- x --------------

.75 -1

D log 3.00945

Top scale has plate thickness; slider has striking velocity in foot/seconds and diameter of shot in inches; bottom scale has weight of shot in pounds. Sliding cursor has two more scales that are not identified.

B283.78

CHM

Casio, 1 Mini Card fx-48 Scientific Calculator, Digital Calculator, 1978, Japan, 256023, 90x53x3 mm, Metal, Case, instruction book, unit conversion table, physical constants table, calculator, Buy.

B284.83

CHM

Commodore US*14, 2 Digital Calculator, Digital Calculator, ca 1970, USA, 11619, 195x290x75 mm, Black and White, Plastic case, transistors, Cord and calculator, Buy, (83).

B285.83 CHM

HDC Industries, 1 "Human Digital Calculator: Add’em up Finger Machine", ca 1980, USA, 140x88x2 mm, Red and White, Cardboard, Buy.

B288.83

CHM

Wolverine, 1 Adding Machine Calculator, Digital Calculator, Single register, Pascal strip, ca 1935, USA, 135x225x105 mm, Red, Blue, Cream, Tin, Buy.

Patent 2243884

B289.79  

Designsense, Inc., Atlanta, Ga., 1 "mileage minder" circular slide rule, Analog Calculator, 2-3 parts, circular slide rule, 1979, USA, 195x108x2 mm, Black, red and white, Paper and aluminum, Instructions and instrument, Buy, Jordan Marsh, (79).

The left rule with input of odometer start and odometer end shows miles driven. The right rule inputting miles driven and miles per gallon, shows gallons used.

B290.83  

Simplex, 1 "Simplex Typewriter Model A" Typewriter, ca 1940, USA, 170x120x75 mm, Red, yellow and blue, Tin, Box, instructions and typewriter, Buy.

Model A prints 36 characters, on 6 inch paper and cost $1.00; Model C, 42 characters on 7 inch paper and cost $1.50; Model D prints 68 characters both capital and small on 7 inch paper and cost $3.00; and Model E prints 72 characters capitals and small letters on 8 inch paper and cost $4. Sold as "useful where speed of pen suffices and carbon copy is not needed. They fascinate and teach children. Their Elders find them useful."

B291.83

CHM

Barron’s Educational Services, Inc., Woodbury, NY, 1 "Metric Converter" Slide rule, Analog Calculator, 2-3 parts, slide rule, USA, 212x82x2 mm, red, orange, and yellow on white, cardboard, Buy.

B292.83

CHM

1 Typewriter, ca 1900, Wooden case and base, steel, tin, rubber, case and machine, Buy, Margaret Weiner Kennedy, (83).

No maker yet this was manufactured.

B293.83  

IBM, 1 plug board for 911, USA, Type 911, #121854, 290x170x30, Stainless steel, plastic coated plugs, Board and plugs, Buy, Computer Museum.

B294.83 CHM DEC, 1 PDP-10 Cable connector.
B295.83   DEC, 1 UART, 1979, 132x215x2 mm, green board.
B296.83 CHM DEC, 1 Core plane, Memory, 1974, 208x265x20. Late PDP-11 core plane.
B297.83   DEC, 3 modules, Transistor, 1960, USA, 43x43x170 mm.
B299.80 CHM

Monroe, 1 "Monroe" calculator, Digital Calculator, 3-4 registers, ca 1950, USA, Model LA7-160; #J716387, 190x150x280 mm, grey, Buy, (80).

B301.84  

1 "SWIFT" HANDY CALCULATOR, Digital Calculator, Single Register, Mechanical, ca 1960, USA, 130x140x86 mm, Blue, Plastic, Buy, Palo Alto Thrift Store, (84).

B302.84 CHM

1 "Consul" The Educated Monkey, Table, Readable or Writable Memory, Linear, Craft, 1916, USA, 139x148 mm, Red, Yellow, Blue and Brown, Tin, Device, Cardboard case, and replaceable table for adding, Buy, Boston Antique Show, (84).

See letter from Donald Davies in files and instruction book; same as B211.82.

B303.84

CHM

Hine and Robertson Co. New York, 1 The Lippincopt PlanimeterPlanimeter, Analog Calculator, Multiple Part, Areal Measure, Mechanical, 1898, USA, 190, Nickel, May be missing one dial, Buy, Irwin and Rita Margolis, Brockton, (84).

B304.84

CHM

Butterfield (1674-1722), 1 Sector, Analog Calculator, 2-3 Part, Sector, Craft, 1700, France, Brass, Buy, Peter Delahar, (84).

B305.84  

Tavernier-Gravet, Rue Mayet, 19-Paris, 1 Mannheim slide rule, Analog Calculator, 2-3 part, slide rule, Craft, ca 1890, France, 260x28x8 mm, Boxwood with metal cursor, stamped with "Medailles D’or 1878 et 1889, Buy, Peter Delahar, (84).

See B203.82

B306.84

CHM

Marion & Co., London, 1 Hurter & Driffield’s Actinograph, Readable or Writable Memory, Craft, 1892, England, Wood and paper, Box, instrument, instructions, Buy, Peter Delahar, (84).

B307.84  

A W Faber, 1 Slide Rule, Analog Calcula, 2-3 Part, Slide Rule, Craft, ca 1935, Germany, 371190, 33x9x270 mm, Ivory, Ivory bonded to wood, Inch and centimeter scales are on opposite sides, Leather case and rule, Buy, Flea market.

See also 189

B308.84  

Philco, 3 Circuit boards from the Philco 212, Digital computer, ca 1960, USA.

B309.84

CHM

Tasco, 1 "Pocket Arithmometer", Digital calculator, Single register, Pascal strip, ca 1940, USA, 10x180x60 mm, tin, calculator, case, stylus, Buy, Prairie du Chien flea market.

See 36.79

B311.84

CHM

Otis King, 1 Cylindrical slide rule, Analog calculator, 2-3 moving parts, Buy, Historical technology.

B312.84

CHM

Brevete, 1 Circular slide rule, nickel, Buy.

B313.84

CHM

Keuffel & Esser Co, 1 radial planimeter, Analog Calculator, multiple part, Germany, 22280, steel, case and instrument, Buy.

B314.84

CHM

1 Abacus, 9 digit, and instruction book, Buy.

B315.84  

Iacobus Matinensis, 1 sector, 1687, Italy, brass, Buy, Antiquarian Scientist.

B316.84  

Jason, 1 Slide Rule No. 803, Analog Calculator, 2-3 part, linear, ca 1955, Japan, plastic laminated wood, case and rule, Buy, NE Trade Show.

B317.84  

Keuffel & Esser Co., 1 Slide Rule, Analog Calculator, 2-3 part, Linear slide rule, ca 1930, USA, 54308, laminated wood, leather case and rule, Buy, NE Trade Show.

B318.84  

Lawrence Engineering Service, Peru, Indiana, 1 Slide Rule, Analog Calculator, 2-3 part, linear slide rule, ca 1950, USA, Paper on wood, "Waddy Hogue" written on the table side, Buy, NE Trade Show.

Slide rule on one side tables on the reverse. These include Decimal equivalents of one foot, weight metals, and ultimate strength.

B319.84

CHM

1 "Unique" Universal II Slide Rule, Analog Calculator, 2-3 parts, linear slide rule, England, plastic pinned on wood, Buy, NE Trade Show.

B320.84  

Kenyon Instrument Co., Inc., Huntington, L.I., N.Y., 1 "The Kenyon Calculator" Circular Slide Rule, Analog Calculator, 2-3 parts, Circular slide rule, 1937, USA, plastic laminate on wood, Buy, NE Trade Center.

A nautical slide rule. The outer circle has distance and speed in land miles & miles per hour and nautical miles and knots. The inner circle has time ranging from one minute to 10 hours. The reverse side has a compass, map measure scale ratio for 1/20,000, 40,000 and 80,000. Beaufort wind scale, knots and weather bureau description.

B321.84

CHM

Keuffel and Esser, 1 "K & E Compensating Polar Planimeter with Adjustable Arms" planimeter, Analog Calculator, Multiple part, ca 1940, USA, Model 4242, Serial Number 9120, Instrument and velvet lined case, Buy, NE Trade Show.

The adjustable tracer arm with vernier and adjustable pole arm allows the reading of areas in square inches to 0.01 sq. in. or .0.04 sq. cm. The range of the trace arm is 1.5-7 inches and the pole arm length is 6 to 13 inches. The maximum area "Pole out-side figure" is about 12 inches and "pole within figure" a 39 inch circle and 27 inch square.

B322.84  

Keuffel & Esser co., 1 "Paragon protractor No. 1225"protractor, Drawing instrument, ca 1920, USA, nickel, mahogany case with velvet, Buy, NE Trade Center.

The semicircular protractor has a horncenter and movable arm capable of being set at .5 degrees.

B323.84 CHM

Richmond School Furniture Co., Munci, Indiana, 1 "Junior Spelling and Number Board No. 50" Calculator, Digital Calculator, Single Register, Manual, ca 1940, USA, Red, cardboard, Buy, NE Trade Show.

B324.84  

Stanley, 1 Electronic Calculator, looks like a 16 ft Stanley powerlock rule, ca 1980, USA, Buy, NE Trade Fair

B325.84

CHM

Contina Ag Mauren, 1 "Curta" Type II, Digital Calculator, 3 Register, Rotary, Mechanical, Liechtenstein, 513508, Instrument and Case, Buy, NE Trade Fair.

See 87.80

B326.84 GKB

Contina Ag Mauren, 1 "Curta" Type II, Digital Calculator, 3 Register, Rotary, Mechanical, Liechtenstein, 513329, Instrument and Case, Buy.

See 87.80

Note: Case numbered B325.84 (B326 crossed out)

B328.84

CHM

Albert Newstler A.G. Lahr i/B, 1 "Rechen-Walze System Cylindrical Slide Rule", Analog Calculator, 3-4 parts, slide rule, ca 1930, Germany, cylinder 6 1/4" diameter and 23" long, paper faced aluminum on dark oak base, Buy, Historical Technology.

"This super slide rule appears to combine features of Hannyngton’s linear grid slide rule and Thatcher’s cylindrical calculator. It differs from the former in that there is no overlap of scales on the base cylinder and from the latter in that each grid bar contains only one scale and that these scales are half the length of the base one. The Rouleau Calculator (Item 164 in the Science Museum catalog) is another Swiss variant of the same design. There are 50 scales, 20" long each on the main cylinder (for a total scale length of 1000 inches) and the same number, 10" long each, on the sliding grid." Historical Technology Catalog 127.

B337.85

CHM

Fowler’s Calculators Ltd., "Jubilee Magnum" Circular Slide Rule 1, Analog Calculator, 1-2 parts, circular slide rule, 1948, England, nickel plated boy with white dial face rotated under an index line. Buy, Historical Technology.

"Designed to mark the 50th anniversary of the firm and to meet the wants of a great number of people, whose primary requirements are for a device for solving problems of multiplication and division in a rapid and accurate manner." The entire scale is 79" long resulting in almost one full figure increase in accuracy over the 10" slide rule.

B338.85

CHM

T. Heath fect, Gunter type sector, 1, 1720-40, England, Bright brass, restored lacquer finish, pivoted strut which fold into a slot for added support. Buy, Historical Technology.

Thomas Heath started in business in 1714. In 1740 he made his apprentice Tycho Wing a partner and Heath & Wing remained in business until Heath’s death in 1773.

B339.85

CHM

"The Mechanical Engineer", circular slide rule, 1, Switzerland, nickel, brass case, Buy, Historical Technology.

B340.85 CHM

Todd Protectograph Co., Rochester, NY, 1 "Star Adding Machine" Adding Machine, Digital Calculator, Single Register, Mechanical, 1921, USA, Black with red and green, Metal, Buy, MacGregor Ia. antique shop.

B341.85

CHM

L. C. Stephier, 1 Coggeshall rule, Analog Calculator, 2-3 part, craft, USA, No. 23, 320x40x4 mm, boxwood, Buy.

B342.85  

1 Hinged slide rule, Analog calculator, 2-3 parts, craft, 1800, English, overstamped French, 320x40x4 mm, boxwood and brass, Buy, Peter Delahar.

Unusual hinged slide rule with navigational scales.

B343.85 CHM

Wittnaur Watch Co., 1 Map measure, Analog Calculator, 2-3 Part, Linear calculator, USA, centimeters to inches, Buy, Amherst flea market.

B344.85  

Kueffel & Esser Co., 1 Map measure, Analog calculator, 2-3 parts, linear measure, USA, Model 1744T, inches to feet, Box and measure, Buy, Amherst flea market.

B345.85

CHM

Watkins, 1 drawing instruments, 1824 newspaper inside, England, "pocket scale set", ivory sector, boxwood rule, lizard case, Buy, Amherst antique market.

B346.85

CHM

W. L. Jones, 50 Holborn, London, 1 pantograph, Analog calculator, multiple parts, proportional copier, ca 1850, England, Brass, case and instrument, Buy, Amherst antiques.

B347.85 CHM

1 Integrator, 209478, USA, painted red, blue and yellow by Arthur Hall, Bur. Ord. Assembly Drg. No. 194077, U.S. No. 38.

B348.85 CHM 1 Integrator, 209478, Bur. Ord. Assembly Drg. No. 194077-1, Serial No. 3532, Buy, 30.
B349.85   Keuffel & Esser Co., 1 Slide Rule (N4053-3), Analog Calculator, 2-3 part, patent June 1900, USA, #364384, leather case and rule, Buy.
B350.86 CHM 1 "Consul" The Educated Monkey, Memory, 1916, USA, 139x148 mm, Red, Yellow, Blue and Brown, Tin, Device, cardboard case and replaceable table for adding, Buy, NE Trade Center Show.

See also 211 and 302

B351.86

CHM

Otis King, 1 Otis King’s Pocket Calculator Cylindrical slide rule, Analog calculator, 2-3 moving parts, B1597, Leather case and rule, Buy, England.

B352.86

CHM

"Unique", 1 Universal II Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

B353.86  

"Unique", 1 Log Log Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

B354.86  

"Unique", 1 Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

B355.86  

"Unique", 1 Universal Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, plastic pinned on wood, Buy, England.

B356.86  

Faber-Castell, 1 Castell slide rule, Analog Calculator, 2-3 moving parts, linear slide rule, Germany, plastic and wood, plastic case and rule, Buy, England.

B357.86  

1 "Coggeshall" Slide Rule, Analog Calculator, 2-3 moving parts, linear slide rule, England, Wood and brass, Engraved, E. Routledge Engineer Bolton, Buy, England.

B358.86

CHM

Elliott Bros, 440 Strand, 1 Sector, 2-3 moving parts, sector, England, Ivory and brass, Buy, England.

B359.86  

J. Archbutt & Sons, 1 parallel rule, compass and rule, Buy, England.

See B259.83

B360.86  

H. Huges & Sons Ltd. London, 1 "Capt Field’s Improved Parallel" parallel rule and compass, Analog Calculator, 2-3 moving parts, England, Wood, Buy, England.

B361.86

 

Charles Augustus Schmalcalder, 1 Protractor, Analog calculator, Circular protractor, ca 1810, England, brass, double cantilever arm and geared, wood case and instrument, Buy, Peter Delahar.

Illustrated in G. Adams, rev W. Jones, Geometrical and Graphical Essays, 4th Ed. London 1813.

B362.86  

Halden & Co. Ltd, 1 "HALDEN CALCULEX" Circular Slide Rule, Analog Calculator, 2-3 part, circular slide rule, ca 1910, England, 60 mm diameter, Aluminum cse with velvet interior and instrument, Buy, England.

See B158.81

B363.86

CHM

A. Jeffery Camborne, Wilton St. Day, 1 Circular protractor, Analog Calculator, circular protractor with one arm, ca 1900, England, Brass, Wood case and instrument, Buy, England.

B364.86 CHM

Elliott Brothers, London, 1 Proportional rule and protractor, Analog Calculator, Fixed, Rule and Protractor, ca 1890, England, Ivory, Buy, England.

Engraved H. F. Mackay; Horizontal equivalents for 20 feet of vertical engraved on one side; rule for degree of slope on the other.

B365.86

CHM

Elliott Brothers, London, 1 Proportional rule and protractor, Analog Calculator, Fixed, Rule, ca 1890, England, Ivory, Buy, England.

6 to M. Yards on one side; 8 to M paces or yards on the other.

B370.86 CHM

Victor Adding Machine Co., 36 Second St., Sand Francisco 5, Ca., 1 Adding machine, Digital Calculator, 1-2 register, Pascal key and print, ca 1935, USA, W867 metal plate; 936307 C 7 83 4 stamped in plastic, black and green, plastic "art nouveau" form, Buy, Palo Alto antiques.

B371.86

CHM

Starhe & Hammerer, 1 Planimeter, Analog Calculator, Variable Part, Variable Ratio Polar Planimeter, ca 1870, Austria, 874, Brass and iron, Wooden case and instrument, Buy, Peter Delahar.

A very rare instrument, modifying the Amsler design.

B372.86  

Felt & Tarrant Mfg. Co.,, 1 "Comptometer", Digital Calculator, Single Register, Keyed Wheel, Electric, ca 1930, USA, metal, Buy, Palo Alto Antiques.

B373.86  

Felt & Tarrant Manufacturing Co., 1 "Comptometer", Digital Calculator, Single Register, Keyed Wheel, Electric, ca 1930, USA, Buy, Palo Alto Antiques.

B262.87 CHM

Arithma and case.

B382.87

CHM

Sun Henni Japan, The Frederick Post Co, No. 1452W, Universal.

B384.87

CHM

Aston and Mander slide rule, silver, 1915

B500.88 CHM

Allen & Wales Desk Model

B501.88

CHM

Burroughs

B503.88

CHM

Comptometer, broken keys

B1500.01

CHM

Lord’s Calculator. Elliott Bros London No. 35 1880. Example of the giant circular slide rule devised by Lord and made by Elliot Bros. In very fine condition. London, England.

B1501.01

CHM

Burroughs Portable Adding Machine – Black and green medal with paper tape. B-1206649

B173.81?

B1502.01

CHM

DEC Circuit Board in Plexiglas. Made in Galway. PDP1170 Module circa 1976.

B1503.01

GKB

Sage ANFS/67 Module (1958) Present to Gordon and Gwen by Computer History Center.

B1504.01

CHM

Sextant with case.

B1505.01

 

CHM

Micronta Tool Set made in Germany

B1506.01

CHM

Stanley large, brass planimeter in box.

B1507.01

CHM

Large slide rule in box. Brass, heavy. Box in poor condition.

B1508.01

CHM

Programmable robot toys

B1509.01

CHM

IBM Vacuum Tube Module

1510.01

CHM

Magic Multiplier Pencil

B1511.01

CHM

Digital Chip Mask Design, silver, 10-Feb-82-11.

B1512.01

CHM

Plug Connector

B1513.01

CHM

Vacuum Tube Module

B1514.01

CHM

Simon I was built by William A. Porter and two Columbia University graduate students of electrical engineering. Simon is a simple mechanical "brain" that can transfer information automatically from any one of its "registers" to any other, and it can perform reasoning operations of indefinite length. Its relays basic functions are programming, storage, computation, input, and output.

Note: PDF file to be included.

B1515.01

CHM

Tape punch

B1516.01

CHM

Regle a calcul signee Elliott Bros. London 1840-50

B1517.01

CHM

Metal circular drafting tool

B1518.01

CHM

Comptometer K357673 electric with cord.

NOTE: Could be B372.86 or B373.86

B1529.01

CHM

Lawrence Engineering service slide rule. White painted wood on one side, wood on the other.

B1530.01

CHM

Heavy paper and glass. French. Cardboard case.

B1531.01

CHM

Pickett & Eckel Model N3-Es Power Log Exponential Log Log Dual BaseCopyright 1960

NOTE: Marked B172.81 – Wrong Number

B1625.01 CHM

Replica of Napier's bones. Bought Peter Roubos, Netherlands 6/01, gratis.

Napier first described his "bones" in 1617. The bones were a convenient portable digital calculator for multiplication, division and roots, and assumed major importance in the seventeenth century.

B1626.01 CHM

Replica of Schickard's clock, height 32 cm, width 26 cm without and 38 cm with slides, depth 15 cm, Mahogany, Bought Peter Roubos,  Netherlands 6/01.

The first mechanical calculator was invented by Wilhelm Schickard, a German scholar who was professor of Hebrew and oriental languages at Tubingen University. He built his original calculating clock in 1623. It consisted of two devices in one: the top was a version of Napier's bones laid out on six cylinders in a box with wooden slates. For bigger calculations a mechanical adder was installed beneath.

B1627.01 CHM

Replica of Napier's calculating box, height 8 cm, width 24 cm, depth 12 cm, Mahogany, Bought Peter Roubos, Netherlands 6/01.

B1628.01 GKB

The Muse, binary instrument by Triadex Incorporated, 1970. The Muse was invented by two M.I.T. professors, Ed Fredkin and Marvin Minsky. It is a small digital computer that uses electronic technology for sound generation. Synthesized shift register kind of logic.

Note: PDF file to be included.

B1629.01 GKB

Abacus, wood and brass, Wang Hing Hong Kong

B1630.01 CHM

Mechanical piece built to pick up a nut by Edmund Berkeley, probably 1940's. Bought, Edmund Berkeley.  Marked X358.84

B1631.01 CHM

Replica Genaille-Lucas Arithmetique, 1885, height 8 cm, width 38 cm, depth 12 cm, mahogany, Bought Peter Roubos, Netherlands 6/01.

B1632.01 CHM

ReBo Machine a Calculer

B1633.01 CHM

Chadwick Magic Brain Calculator

B1634.01 CHM

Fredrick Post Co. Universal Slide Rule, No 1452W.

B1635.01 CHM

Waldes Truarc Retaining Rings Cilcular Calculator, made in USA, K. Jaeger

B1636.01 CHM

CH Webb, The Adder, Pat D Nov 5th 12th 1889

B1637.01 CHM

MicroVax 1 chip, Silicon Compliers Inc.

B1638.01 CHM

DC100A Data Cartridge

B1639.01 CHM

Betty Crocker's Cookbook, Franklin Electronic Publishers, in box with User's Manual

B1640.01 CHM

Tower 9 Pocket Calculator, West Germany

B1641.01 CHM

Negrette & Zambra, Pocket Forecaster, Paten # 6276/15, Patent # 440028/130076, in box with instructions

B1642.01 CHM

Hexco, Inc., Hex Adder, Houston TX Cat #3600-3

B1643.01 CHM

Tiny brass abacus, approximately 1 1/2 by 4 inches, 15 digits

B1644.01 CHM

Callaghan & Co, weather predicting circular slide rule with temperature scale and barometer built into original case.

B1645.01 CHM

Brevitz Fabrications, Swiss, Stima calculator, US patented 14 June 1932, D.R.P. No 5415008, with case.

B1646.01 CHM

Loga, Double Regle a Calculer

B1647.01 CHM

Clary electric calculator. Marked GB57 (wrong number). Auto Electric Sales Co.

B1649.01 CHM

Burroughs, A651553, Marked GB67

B1652.01 CHM

HP65 calculator. Used by Gordon Bell

B1653.01 CHM

Comptometer. J295586

B1654.01 CHM

PDP Core Memory Stack.

B1655.01 CHM

Drawing instruments in green lizard. Labeled B227.82 - wrong number.

B1656.01 CHM

2 Teledapt circular time selectors.

B1657.01 CHM

Pickett circular slide rule. Yellow.

B1659.01 CHM

Thin, wood abacus.

B1668.01 CHM

Digital Spectrum of Products, 1974, blue and white cardboard, pull-out tab, readings for hardware options, software options, and hardware specifications.

Instructions read: “In top horizontal window, set indicator bar under desired CPU. Read Hardware and Software options in corresponding windows. For reverse side of calculator: In appropriate vertical window, set indicator to desired item. Read pertaining data in corresponding horizontal windows above. Setting for each chart is independent of others."

B1675.01 CHM

Newham's Rotary Principal Interest Demonstrator, to find the interest for any sum. Also contains a sheet of directions for the use of tables for month and for days. Hard cover.

B1683.01 CHM

Every Man's Own Interest Calculator. Hardcover foldout.

B1684.01 CHM

100-year calendar 1945-2044. Painted bronze. Marked B231.82 - wrong number.

B1685.05 CGB

Keuffel & Esser 4242 planimeter, SN# 2066. Black box with silver and black tracer and pole arms on royal blue velvet backing. Purchased in July 2005 from Betty Ann and Fred Centanni. As a junior at MIT in 1965, Mr. Centanni was given the planimeter by one of his professors for helping to clean out a laboratory.