Model of Joseph Henry's electromagnetic bell

Model of Joseph Henry's electromagnetic bell

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Description (Brief)
The original device, consisting of an electromagnet arranged to ring a bell, was demonstrated in 1831 by Joseph Henry to his classes at the Albany Academy in Albany, N. Y. By closing a circuit, Henry energized the electromagnet with current from a battery. The magnet attracted a lever arm that rang the bell. This demonstrated electrical action at a distance and laid the foundation for later telegraph devices. This replica was made for the Western Union Museum.
Location
Currently not on view
Object Name
electromagnetic demonstration
electric bell ringer
demonstration apparatus
Maker
Western Union Corporation
Physical Description
wood (part: material)
metal (part: material)
Measurements
overall: 4 in x 19 in x 11 in; 10.16 cm x 48.26 cm x 27.94 cm
ID Number
EM.331677
accession number
294351
catalog number
331677
collector/donor number
100-055
16-04
Credit Line
from Western Union Corporation
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
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