Davis "paddle-wheel" electro-magnetic engine
date: label: Date made
content: ca 1848
name: label: user
content: Henry, Joseph
label: maker
content: Davis, Jr., Daniel
notes: label: Description (Brief)
content: A direct current motor made by Daniel Davis, ca. 1848, no extant maker's markings. A horseshoe type permanent magnet has a winding on each side connected to terminal posts on the base. A brass wheel has 3 iron pieces which rotate in the field of the electromagnet poles. A spoked commutator arrangement is affixed to the wheel shaft with a brush touching the spokes. This motor was supposed to have been used by Joseph Henry. Reference: Davis, Manual of Magnetism, 1848 (Published in Boston by Daniel Davis) pages 208-210.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the Smithsonian Institution Collection of Apparatus, thru William C. Winlock
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181445
label: catalog number
content: 181445
label: accession number
content: 2006.0177
objectType: label: Object Name
content: Motor
label: Object Name
content: electric motor
label: Other Terms
content: Motor; Magnetic Devices; Electromagnetic Devices; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 11 1/4 in x 4 in x 4 3/4 in; 28.575 cm x 10.16 cm x 12.065 cm