Kendrick and Davis "Porter" electric motor
date: label: date made
content: ca. 1915
name: label: patentee
content: Porter, Harry H.
label: maker
content: Porter Standard Motor Co.
label: maker
content: Porter & Leavitt Electric Motor Co.
notes: label: Description (Brief)
content: A small motor, two-piece metal frame connected by a brass nameplate stamped: "Porter Motor / K&D / No 1". A single electromagnet coil is at the bottom with a 3-section armature mounted above. A pulley is mounted on one end of the armature and a commutator is mounted on the other end. Cloth-insulated wires. Two mount holes. Porter Motor, K&D, No.1 (small motor). Harry H. Porter (patentee), assigned his rights to Porter & Leavitt Electric Motor Co., Providence, RI and they are the licensed makers according to an 1891 letter in Electrical Engineer 12 (30 Sept 1891): 387. Apparently the infringer was The Porter Standard Motor Co., Lebenon, NH, who has an ad in Electrical World 31 (1 January 1898): xxxvi. Presumably the parties came to an agreement but it's unclear. By May 1898 the Leavitt Motor Co., has succeeded Porter & Leavitt. This particular motor was made by Kendrick and Davis Co. (K&D), presumably under license.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: From Charles S. De Long
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.330850
label: catalog number
content: 330850
label: accession number
content: 298920
objectType: label: Object Name
content: Motor
label: Object Name
content: motor
label: Object Name
content: electric motor
label: Other Terms
content: Motor; Motors and Generators
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 3 1/4 in x 3 3/4 in; 8.255 cm x 8.255 cm x 9.525 cm