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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