Macaroni Box Model Comptometer (Replica)
date: label: date made
content: ca 1933
name: label: maker
content: Felt & Tarrant Manufacturing Company
notes: label: Description
content: This is a replica of the prototype for the Comptometer, a key-driven adding machine invented by Dorr E. Felt of Chicago. It is an open wooden box (originally used to store macaroni) with one row of "key stems" across the top. There are five skewers in the row, although there are holes for nine of them. Beneath this are five wooden levers and then five levers with rows of wooden discs on them. Further mechanism at the front of the machine incorporates both corks and metal gears and discs. Rubber bands, used to set the levers to accept the next keystroke, are missing.
label: Description
content: Compare the original, which has catalog number MA.311192.
label: Description
content: Reference:
label: Description
content: J. A. V. Turck, <I>Origin of Modern Calculating Machines</I>, Chicago: Western Society of Engineers, 1921, pp. 52-56.
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 Victor Comptometer Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.323646
label: catalog number
content: 323646
label: accession number
content: 250163
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: cork (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 24.5 cm x 23 cm x 52.4 cm; 9 21/32 in x 9 1/16 in x 20 5/8 in