Davis "paddle-wheel" electro-magnetic engine

Davis "paddle-wheel" electro-magnetic engine

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Description (Brief)
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.
Location
Currently not on view
Object Name
Motor
electric motor
Other Terms
Motor; Magnetic Devices; Electromagnetic Devices; Electromagnetic Devices
Date made
ca 1848
user
Henry, Joseph
maker
Davis, Jr., Daniel
Measurements
overall: 11 1/4 in x 4 in x 4 3/4 in; 28.575 cm x 10.16 cm x 12.065 cm
ID Number
EM.181445
catalog number
181445
accession number
2006.0177
Credit Line
from the Smithsonian Institution Collection of Apparatus, thru William C. Winlock
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
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