The Portable Adding Machine
date: label: date made
content: 1925
name: label: distributor
content: Portable Adding Machine Company
label: maker
content: Portable Adding Machine Company
notes: label: Description
content: This manual adding machine has seven columns of nine plastic keys each, and a steel case painted black. There is a repeat/error lever on the left, and total/subtotal, non-add and non-print keys on the right. Numbers are set by pressing keys, and entered by turning a handle on the right side of the machine. The printing mechanism, black ribbon, and paper tape are at the back. The machine prints seven-digit totals. It has four rubber feet.
label: Description
content: The machine is marked on the top: The (/) Portable. It is marked on the front: PORTABLE ADDING MACHINE CO. (/) CHICAGO, ILLINOIS, U.S.A. It is marked on a piece of paper pasted to the bottom: Guarantee (/) The Portable Adding Machine is fully guaranteed (/) against defective material and workmanship for (/) a period of one year from date of sale. (/) PORTABLE ADDING MACHINE CO. (/) B.E.Harris (/) President.
label: Description
content: It was designed by Glenn J. Barrett, manufactured by the Corona Typewriter Company of Groton, New York, and sold by the Portable Adding Machine Company of Chicago. It was introduced in October 1924 and cost $65.00. By 1928, this machine was sold as the Corona by the Corona Typewriter Company.
label: Description
content: Compare 2000.0221.01.
label: Description
content: References:
label: Description
content: E. Martin, <I>The Calculating Machines (Die Rechenmaschinen)</I>, trans. P. A. Kidwell and M. R. Williams, Cambridge: MIT Press, 1992, p. 333.
label: Description
content: J. H. McCarthy, <I>The American Digest of Business Machines</I>, Chicago: American Exchange Service, 1924, p. 52.
label: Description
content: <I>Business Machines and Equipment Digest</I>,Chicago: Equipment Research Corporation, 1928, sec 3-2, p. 4.
label: Description
content: Between 1923 and1933 Glenn J. Barrett of Grand Rapids, Michigan, took out a variety of U.S. patents for adding machine mechanisms which he assigned to the Portablee Adding Machine Company.
label: Location
content: Currently not on view
place: label: place made
content: United States: Illinois, Chicago
label: place distributed
content: United States: Illinois, Chicago
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
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content: Adding Machines
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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.323608
label: accession number
content: 250163
label: catalog number
content: 323608
objectType: label: Object Name
content: adding machine
physicalDescription: label: Physical Description
content: paper (overall material)
label: Physical Description
content: steel (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: plastic (overall material)
label: Physical Description
content: wood (overall material)
label: Measurements
content: overall: 20 cm x 24.6 cm x 34 cm; 7 7/8 in x 9 11/16 in x 13 3/8 in