Model of Faraday's Dynamo of 1831
date: label: date made
content: 1930
name: label: associated person
content: Faraday, Michael
label: maker
content: Reed, Fred C.
notes: label: Description (Brief)
content: No extant maker's markings. A copper disc is mounted so that it can be rotated between the poles of a stack of three permanent horseshoe magnets. A copper brush rubs against the edge of the disc, which is cranked with a white celluloid handle. This entire direct current generator unit was mounted on a rectangular wooden frame which contains an AC motor used to spin the copper disc for exhibit purposes. Appropriate reduction takes place through hidden gears behind the disc. Output voltage terminals for the dynamo are available on the wooden base. This unit "was made in the shop of the Divisions of Mineral and Mechanical Technology in 1930 by Fred C. Reed and Roderick Davis, from drawings made by Fred C. Reed after a half-tone illustration on page 16 of The History of the Incandescent Lamp by John W. Howell and Henry Schroeder, Schenectady, 1927." Reference: Audel's New Electric Library Vol. 1, pages 198-200.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: Made in the Museum
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.309824
label: catalog number
content: 309824
label: accession number
content: 109553
objectType: label: Object Name
content: Dynamo
label: Object Name
content: electrical generator
label: Other Terms
content: Dynamo; Magnetic Devices; Electromagnetic Devices; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 9 1/2 in x 14 in x 10 in; 24.13 cm x 35.56 cm x 25.4 cm