Hochhousen dynamo electric machine, US patent #224,593
date: label: Date made
content: 1880
name: label: maker
content: Hochhausen, William
notes: label: Description (Brief)
content: A model of a direct current generator to accompany US Patent #224593, "Dynamo-Electric Machines," issued 17 February 1880 to William Hochhausen.
label: Description (Brief)
content: No extant maker's markings. Cast iron frame with two upright magnets painted red, in the center of the curved pole pieces is a revolving armature with commutator and brushes at one side. (Unit in a damaged condition) A sample parallel bar (figure 4 in the patent) is loose from the frame. The patent claims: "A cylindrical armature composed of a number of parallel bars held in position by projections on bars abutting against the inner conical rim-surface of two diamagnetic plates."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.252653
label: catalog number
content: 252653
label: accession number
content: 49064
label: patent number
content: 224593
objectType: label: Object Name
content: Generator
label: Other Terms
content: Dynamo, Part of; Generator; Magnetic Devices; Electromagnetic Devices; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 10 1/2 in x 5 1/2 in x 7 1/2 in; 26.67 cm x 13.97 cm x 19.05 cm
label: Measurements
content: armature bar: 9 in x 2 in x 1 1/2 in; 22.86 cm x 5.08 cm x 3.81 cm