Thomson-Houston arc light generator with spherical armature

Description (Brief):

This is the first spherical Thomson-Houston arc light dynamo, built in 1879. The armature consists of three wires, joined to together at one end, and attached to a three part commutator at the other. The interior sections of the field magnets are cup shaped, to fit the armature closely. One brush is missing, the other is curled back in the holder. Reference: Schroeder, History of the Electric Light, page 38; MacLaren, Rise of the Electrical Industry in the 19th Century, page 116 (photo, figure 75), description, page 121.

Date Made: 1875ca 1879ca.1879

Maker: Thomson-Houston Electric Company

Location: Currently not on view

See more items in: Work and Industry: Electricity


Exhibition Location:

Credit Line: from General Electric Company

Data Source: National Museum of American History

Id Number: EM.181727Catalog Number: 181727Accession Number: 33185

Object Name: Generatorelectrical generatordynamoOther Terms: Generator; Motors and Generators

Measurements: overall: 10 3/4 in x 20 1/2 in x 15 in; 27.305 cm x 52.07 cm x 38.1 cm


Record Id: nmah_713725

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