Vibroplex Telegraph Key

Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code. A semi-automatic telegraph key like this one allows an operator to send land-line and wireless (radio) telegraph messages at a much faster rate than with an ordinary key. The key automatically produces rapid morse code dots by using a weighted pendulum to quickly make and break contact in the electrical circuit. The operator still makes the dashes manually.
Location
Currently not on view
date made
ca 1919
maker
Martin, Horace G.
Physical Description
metal (overall material)
plastic (overall material)
Measurements
overall: 3 3/8 in x 3 1/2 in x 8 in; 8.5725 cm x 8.89 cm x 20.32 cm
ID Number
EM.325443
catalog number
325443
accession number
252994
Credit Line
from Paul G. Watson
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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