Motor-driven Telegraph Transmitter

Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code. A semi-automatic key repeated the Morse code dots rapidly, much like holding down a key on a keyboard for repeated letters. This motor-driven, semi-automatic telegraph transmitter from 1923 was used for sending Western Union cablegrams from New York to San Francisco through thirteen repeaters. The wire distance was over 3,000 miles.
Currently not on view
Object Name
electric motor unit
telegraph transmitter
semi-automatic key
sending machine
date made
Fluharty, William G.
Physical Description
metal (overall material)
plastic (overall material)
overall: 4 1/2 in x 7 3/4 in x 9 1/8 in; 11.43 cm x 19.685 cm x 23.1775 cm
ID Number
accession number
collector/donor number
catalog number
Telegraph Keys
See more items in
Work and Industry: Electricity
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
from Western Union Corporation

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