Patent model, Avery direct current motor, US Patent #7,950
date: label: Date made
content: 1851
name: label: maker
content: Avery, Thomas C.
notes: label: Description (Brief)
content: A patent model of a direct current motor. US Patent # 7950, Electromagnetic Engine, issued 25 February 1851 to Thomas C. Avery. Markings: "T.C. Avery's N.Y." A square frame holds four electromagnets painted red. The iron arms on the shaft are alternately attracted by two pairs of fixed magnets activated by current interrupted by the use of cams on the revolving shaft. Patent Claims: The use and manner of arranging the helices and pole of the electromagnets, in combination with the revolving bars or sets of bars.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.308563
label: catalog number
content: 308563
label: accession number
content: 89797
label: patent number
content: 7,950
objectType: label: Object Name
content: Motor
label: Object Name
content: electric motor
label: Other Terms
content: Motor; Motors and Generators
physicalDescription: label: Measurements
content: overall: 5 in x 10 in x 10 in; 12.7 cm x 25.4 cm x 25.4 cm