Generator, D.C., Wallace Electric Light Machine, 1878
date: label: date made
content: 1878
name: label: maker
content: Wallace & Sons
notes: label: Description (Brief)
content: Electric light machine. Two maker's plates: "Manufactured by Wallace & Sons, Ansonia, Conn." This machine is an experimental generator built by William Wallace in 1877. A Pacinotti ring armature is used, mounted on a brass spider. The field magnets are stacked at two levels. The two lower field magnets have an additional insulated covering. The revolving armature has strip-type commutator segments. Two copper wire brushes are used in a rigging that as adjustable set screws. A large pulley wheel is affixed to one end of the armature shaft. A portion of the wheel's circular area has broken off. Reference: William J. Hammer, "William Wallace and His contributions to the Electrical Industries," (1893). Also Urquhart, Electric Light, pages 165-168.
label: Location
content: Currently not on view
place: label: place made
content: United States: Connecticut, Ansonia
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Coe Brass Manufacturing Co.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181642
label: accession number
content: 32363
label: catalog number
content: 181642
objectType: label: Object Name
content: Wallace lighting dynamo
label: Object Name
content: electrical generator
label: Object Name
content: dynamo
physicalDescription: label: Physical Description
content: steel, copper, iron (overall material)
label: Measurements
content: overall: 22 1/2 in x 37 in x 13 in; 57.15 cm x 93.98 cm x 33.02 cm