Model of Henry direct current motor
date: label: Date made
content: 1835
name: label: associated person
content: Henry, Joseph
label: maker
content: Henry, Joseph
notes: label: Description (Brief)
content: No extant maker's markings. An early reciprocating type motor, incomplete. Mary Henry reported this was made by her father about 1835. Apparently collecting curator George C. Maynard doubted that, noting on 7 June 1894, "Geo. W. Woltz says this was made in the Smithsonian either by his father or by DeBuse." The 1835 date presumes the piece was made by Henry. If it was made at the Smithsonian then that date is incorrect.
label: Description (Brief)
content: Maynard noted that, Professor Joseph Henry in describing [the original apparatus] says, "Not much importance Is attached to the invention since the article, in its present state, can only be considered a philosophical toy; although, in the progress of discovery and invention, it is not impossible that the same principle, or some modification of it on a more extensive scale, may hereafter be applied to some useful purpose,* Silliman's American Journal of Science, 20 (July, 1831): 340-342.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Mary A. Henry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181195
label: catalog number
content: 181195
label: accession number
content: 28052
label: catalog number
content: 180928
objectType: label: Object Name
content: Electric Motor
label: Object Name
content: electric motor
label: Other Terms
content: Electric Motor; Electromagnetic Devices; Magnetic Devices; Electromagnetic Devices; Electromagnetic Devices
physicalDescription: label: Measurements
content: overall: 4 in x 5 3/4 in x 8 1/8 in; 10.16 cm x 14.605 cm x 20.6375 cm