Model of Bell's Harmonic Telegraph Transmitter

Model of Bell's Harmonic Telegraph Transmitter

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Description (Brief)
Model of Bell's Harmonic Telegraph Receiver, L-shaped electro-magnet, mounted on wooden base. A flattened steel clock-spring is clamped by one end to one pole of the magnet, while the other is free to vibrate over the other pole. This type of instrument was used by Dr. Bell in conjunction with the harmonic telegraph transmitter, Cat. # 308211, when the telephone was discovered. For details see the "Birth and Babyhood of the Telephone" by Thomas A. Watson.
Currently not on view
Object Name
Telegraph Set
harmonic telegraph
Other Terms
Telegraph Set; Telegraphy; Receiver
overall: 3 in x 5 in x 3 in; 7.62 cm x 12.7 cm x 7.62 cm
ID Number
catalog number
accession number
Credit Line
from American Telephone & Telegraph Company
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Work and Industry: Electricity
Data Source
National Museum of American History
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