Armature for Siemens dynamo
name: label: maker
content: Farmer, Moses G.
notes: label: Description (Brief)
content: An armature for a motor or generator, used by Moses G. Farmer. Steel axle on which is mounted two wire-wrapped cylinders and a ceramic-insulated copper commutator drum. One cylinder 4.5" long, the other is 3" long. Both have twelve steel dividers through which green insulated copper wire is woven but the two seem not to be wired together. Copper leads from the longer cylinder are connected to the commutator. Copper leads from the smaller cylinder emerge from the opposite end of the armature and are numbered with paper tags. Cloth tape is wrapped around that end of the axle. A hole is drilled in each end. No extant maker's marks. Paper label contains museum catalog and accession numbers.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Sarah J. Farmer
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181964
label: catalog number
content: 181964
label: accession number
content: 2015.0173
objectType: label: Object Name
content: Armature
label: Other Terms
content: Armature; Motors and Generators; Components; Motor and Generators; Motor and Generators
physicalDescription: label: Measurements
content: overall: 18 3/8 in x 2 in; 46.6725 cm x 5.08 cm