Sprague direct current automatic motor
date: label: Date made
content: ca 1884
name: label: maker
content: Sprague Electric Company
notes: label: Description (Brief)
content: Nameplate: 8 1/2 H. P. / 250 Volt / D.C. Automatic motor / No. 2581 / Pat dates March 3, April 7, Aug. 25, 1885. This is a self-regulating, bi-polar D motor with shunt winding and differential series coil. There are two sets of three carbon brushes with adjustable clamps. A large drive wheel appears on one end of the armature shaft. Reference: Electrical Manufacturing, May 1949, page 77. A 15 H.P. model of the same type appears in Electrical World, July 2, 1887. page IV.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Albert J. Anderson Manufacturing Company, thru L. C. Cobbett
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.319142
label: accession number
content: 235993
label: catalog number
content: 319142
label: serial number
content: 2581
objectType: label: Object Name
content: motor
label: Object Name
content: electric motor
label: Object Name
content: motor, Sprague Automatic
physicalDescription: label: Measurements
content: overall: 29 in x 40 1/2 in x 52 in; 73.66 cm x 102.87 cm x 132.08 cm