Comptometer Model J
date: label: date made
content: 1926
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: In 1927 officials at Felt & Tarrant Manufacturing Company of Chicago learned that rival Burroughs Adding Machine Company of Detroit had one of its recent machines on exhibit at the U.S. National Museum (as the Smithsonian’s museum was then called). They offered to supply the museum with an example of their latest adding machine, the Model J Comptometer, and to construct a section of the device for display. The museum accepted the offer, and received both this Comptometer and a related model.
label: Description
content: This machine has a brown metal case and eight columns of green and off-white color-coded plastic-covered keys. Odd numbered keys are concave, even numbered keys flat. Complementary digits are indicated on the keys. The first key pressed after the machine has been zeroed rings a bell. There are numbered decimal markers, subtraction levers, and a row of nine windows at the front to indicate the result shown on number wheels below. A zeroing crank is on the right. There is a red key at the back of the keyboard on the right.
label: Description
content: The machine is marked on the front and back of the case: Comptometer. It his serial number marked to the left of the keyboard near the front: J264527. A metal tag behind the keyboard reads in part: TRADE COMPTOMETER MARK. It also is marked with several patent dates. The last is: Nov.2.20.
label: Description
content: For a related object, see 309394.
label: Description
content: Reference:
label: Description
content: Accession file.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Adding Machines
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Felt & Tarrant Manufacturing Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.309393
label: accession number
content: 98776
label: maker number
content: J264527
label: catalog number
content: 309393
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: plastic (overall material)
label: Measurements
content: overall: 14.2 cm x 23.5 cm x 37.5 cm; 5 19/32 in x 9 1/4 in x 14 3/4 in