Comptograph

Description
This ten-key printing electric adding machine has a grayish tan metal casing, a paper tape, and nine white plastic numeral keys, arranged on a block, with zero bar below. Above the number keys is a place indicator with clearance bar. Other keys are marked X, +, -, #, and *. One key is marked with a diamond. The machine has a tan cord, a paper tape 2 3/8” (6 cm.) wide, and a gray cover. The rightmost printwheel prints special characters. A latch releases the lid to reveal the mechanism, the platen, the printwheels, and the two-color ribbon. A serrated plastic edge helps users tear off the paper tape. A lever on the top left releases the tension on the platen.
The machine is marked on the back: Comptograph. It is marked on a metal tag on the inside right: Mod. 2205 No 125253. It is marked on a paper tag on the bottom: MADE IN (/) WESTERN GERMANY. It is marked on the plastic cover: LEON (/) Office Machines Co., Inc. (/) 625 F. Street, N.W. Washington, D.C. (/) REpublic 7-3145.
The machine was used by the donor’s husband when he was working in lingerie manufacture in Richmond, Va.
Reference:
Accession file.
Location
Currently not on view
date made
ca 1962
place made
Germany
Physical Description
metal (overall material)
paper (overall material)
plastic (overall material)
Measurements
overall: 19 cm x 24.5 cm x 39 cm; 7 15/32 in x 9 21/32 in x 15 11/32 in
ID Number
1992.0636.01
maker number
125253
accession number
1992.0636
catalog number
1992.0636.01
Credit Line
Gift of Diane S. Landsberger
subject
Mathematics
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Adding Machines
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object