Reproduction Thomson alternating and direct current generator
date: label: date made
content: 1897
label: date made
content: 1878
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: No extant maker's markings. This dynamo is a reproduction of a machine built in 1878 or 1879 by Elihu Thomson. Current output can be either alternating or direct. A four-coil set of field magnets is arranged with pole pieces above and below the armature. A coupling wheel is provided at one end of the armature shaft. Four copper strip brushes are used - no provision for adjustment aside from bending the brush. Field coils are of circular shape. Four slip rings on the rear shaft are fitted with copper brushes and permit AC to be drawn from the machine. Reference: Woodbury, Beloved Scientist, page 98.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from General Electric Company
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181718
label: catalog number
content: 181718
label: accession number
content: 33185
objectType: label: Object Name
content: electrical generator
label: Object Name
content: dynamo
physicalDescription: label: Measurements
content: overall: 17 1/2 in x 26 in x 26 in; 44.45 cm x 66.04 cm x 66.04 cm