Revolving magnet engine
date: label: date made
content: ca 1835
name: label: associated person
content: Henry, Joseph
notes: label: Description (Brief)
content: Electromagnetic motor set on top of a circular battery, supposed to have been used by Professor Joseph Henry. This unit has a copper outer layer around the base, apparently designed for immersion into a battery solution for direct excitation of the field magnets wound on a horseshoe-type frame. A commutating arrangement is utilized on the revolving shaft, which has a 2.25" permanent magnet affixed to the top. A spring brush is mounted on a circular wooden crosspiece. This specimen is identical to catalog #181736. Reference: American Journal of Science, vol. 35., 1838, page 262.
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.181736
label: catalog number
content: 181736
label: accession number
content: 33204
objectType: label: Object Name
content: motor
label: Object Name
content: Electromagnetic device
label: Object Name
content: electromagnetic device
label: Other Terms
content: Electromagnetic device; Electrochemical Devices
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 3/4 in; 13.335 cm x 6.985 cm