Semi-automatic Telegraph Key

Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code. The Mecograph Company created a right-angle semi-automatic telegraph key around 1906. They competed with Horace Martin's Vibroplex Company until Martin purchased Mecograph in 1914. A semi-automatic key repeated the Morse code dots rapidly, much like holding down a key on a keyboard for repeated letters. The operator still keyed the dashes but could work much faster.
Location
Currently not on view
maker
Mecograph Company
Physical Description
metal (overall material)
plastic (overall material)
Measurements
overall: 2 1/4 in x 4 1/4 in x 5 7/8 in; 5.715 cm x 10.795 cm x 14.9225 cm
ID Number
EM.331682
model number
07728
collector/donor number
100-057
accession number
294351
catalog number
331682
Credit Line
from Western Union Corporation
See more items in
Work and Industry: Electricity
Communications
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center

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