Demonstration Dynamo Machine
date: label: date made
content: ca 1890
notes: label: Description (Brief)
content: A small Wheatstone-style dynamo mounted on a wooden base. A 13" diameter iron crank wheel with a wooden handle is used to operate the demonstration. Two vertical field poles each wrapped with red-insulated copper wire. Leaf-spring commutator on one end of armature and pulley on other end. Belt between wheel and armature pulley is missing. Base marked: "L3A7 / X 3 / 19"; paper tag reads: "G [delta] 3". "1" stamped on front of wheel mount, and both top caps, presumably to mark assembly positions.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Columbia University, Department of Physics, thru Alvin P. Tramm
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322951
label: catalog number
content: 322951
label: accession number
content: 249200
objectType: label: Object Name
content: Generator
label: Other Terms
content: Generator; Motors and Generators
physicalDescription: label: Measurements
content: overall: 17 1/2 in x 13 in x 11 in; 44.45 cm x 33.02 cm x 27.94 cm