Reproduction Thomson alternating and direct current generator

Reproduction Thomson alternating and direct current generator

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Description (Brief)
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.
Location
Currently not on view
Object Name
electrical generator
dynamo
date made
1897
1878
maker
General Electric Company
Measurements
overall: 17 1/2 in x 26 in x 26 in; 44.45 cm x 66.04 cm x 66.04 cm
ID Number
EM.181718
catalog number
181718
accession number
33185
Credit Line
from General Electric Company
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Work and Industry: Electricity
Data Source
National Museum of American History
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