Object Details
- Felt & Tarrant Manufacturing Company
- Description
- This key-driven non-printing adding machine has ten columns of black and white color-coded keys. Complementary digits are indicated and the keys are alternately concave (odd digits) and flat (even digits). The key stems become progressively longer as the digits are larger. There are subtraction levers and decimal markers (unnumbered) in front of the keys. In front of these is a row of 11 windows in the brown steel case that reveals the result on numeral wheels below.
- The machine has serial number 36372, which is indicated on the front to the left of the keys. It is marked on a metal tag screwed to the top of the machine: TRADE COMPTOMETER MARK (/) PAT’D [. . .] JUL.14.03 (/) Felt & Tarrant Mfg. Co. (/) Chicago. The date listed is the last of several patent dates on this tag.
- The model C Comptometer went on the market in 1909. This example was first used at a commercial bank in Westfield, Massachusetts. In about 1950, it was given to Harry Rapp, on of the bank directors, as a relic. He in turn gave it to Judith Lowell in about 1965. She put it to use in the office of her husband, the physician Milton Lowell of Potsdam, New York, even though the Lowells already had a more recent printing machine. Not long after Dr. Lowell retired in 1984, the couple gave the Comptometer to the Smithsonian.
- References:
- U.S. Patent #960528
- J. H. McCarthy, The American Digest of Business Machines, Chicago: American Exchange Service, 1924, p. 548.
- Accession File.
- Location
- Currently not on view
- Credit Line
- Gift of Milton and Judith Lowell
- 1910
- ID Number
- 1985.0120.01
- catalog number
- 1985.0120.01
- maker number
- 36372
- accession number
- 1985.0120
- Object Name
- adding machine
- Physical Description
- steel (overall material)
- plastic (overall material)
- Measurements
- overall: 14.5 cm x 27.5 cm x 37 cm; 5 23/32 in x 10 13/16 in x 14 9/16 in
- place made
- United States: Illinois, Chicago
- See more items in
- Medicine and Science: Mathematics
- Adding Machines
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Record ID
- nmah_690486
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-1c2a-704b-e053-15f76fa0b4fa
