Patent model, Vergnes electric motor, US Patent #30,272
date: label: Date made
content: 1860
name: label: maker
content: Vergnes, Maurice
notes: label: Description (Brief)
content: A patent model of a direct current motor. US Patent # 30272, Electric Engine, issued 2 October 1860 to Maurice Vergnes. The spokes in the wheel of this motor are electromagnets activated by an electric current, the polarity of which is changed by means of a commutator. The magnets exert an attractive force as they approach the magnetic field of the flat energized coil surrounding the wheel, and a repellent force as they pass. Patent claim: The arrangement of a series of electromagnets, disposed as the radii of a wheel on a common center, and revolving within stationary helices so that the revolving magnets have the same polarization when passing through one end of the helices. Description: Reference: Martin and Wetzler, The Electric Motor, page 23.
setName: label: See more items in
content: Work and Industry: Electricity
label: Exhibition
content: Lighting a Revolution
label: Exhibition Location
content: National Museum of American History
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.308567
label: catalog number
content: 308567
label: accession number
content: 89797
label: patent number
content: 30272
objectType: label: Object Name
content: Electric Motor
label: Object Name
content: electric motor
label: Other Terms
content: Electric Motor; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 9 1/4 in x 13 1/2 in x 6 1/4 in; 23.495 cm x 34.29 cm x 15.875 cm