Telegraph Key

Description (Brief)
Semi-automatic keys like this small unit automatically produced rapid morse code dots by using a weighted pendulum to quickly make and break contact in the electrical circuit. The operator would make the dashes manually but could send much faster than with an ordinary key. In this example, the key is mounted on the side.
Currently not on view
Object Name
telegraph key
Physical Description
metal (overall material)
plastic (overall material)
wood (overall material)
cloth (overall material)
overall: 2 1/2 in x 5 7/8 in x 3 in; 6.35 cm x 14.9225 cm x 7.62 cm
ID Number
accession number
catalog number
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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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