Burroughs Adding Machine Section
date: label: date made
content: ca 1920
name: label: Associated Name
content: Morse, J. J.
label: maker
content: Burroughs Adding Machine Company
notes: label: Description
content: This is one of a series of adding machines and adding machine models prepared by the Patent Department of the Burroughs Adding Machine Company. It has a steel mechanism with octagonal black plastic keys and plastic numeral wheel rims. Keys for odd digits are concave, those for even digits are flat. Complementary digits are indicated on the keys. The object consists of a single bank of nine plastic keys with numbers and complements of numbers indicated. There are two numeral wheels and a spring-driven lever. Described in accession file as “Full Stroke & Key-Lock Device” by J. J. Morse, it is one of seven models (1982.0794.04 through 1982.0794.10) that formed Burroughs Patent Dept. 42.
label: Description
content: The machine is marked on a metal tag on the side: B.A.M. CO. (/) MODEL (/) NO. 418.
label: Description
content: John J. Morse of Cleveland, Ohio, took out U.S. Patent 1,510,951 for a “key-driven calculating machine” on October 7, 1924 (application date October 5, 1923), and assigned this patent to Burroughs Adding Machine Company. His patent was concerned with preventing incomplete key action, and hence erroneous calculations, on a key-driven adding machine.
label: Location
content: Currently not on view
place: label: place made
content: United States: Michigan, Detroit
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 Burroughs Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0794.04
label: catalog number
content: 1982.0794.04
label: accession number
content: 1982.0794
objectType: label: Object Name
content: adding machine section
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: steel (overall material)
label: Measurements
content: overall: .1 cm x 4.5 cm x 26.3 cm; 1/32 in x 1 25/32 in x 10 11/32 in