Vibroplex Telegraph Key

Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code. Semi-automatic keys like this "Vibroplex" 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. This key came to the Western Union with its original carrying case.
Location
Currently not on view
Object Name
bug
semi-automatic key
sending key
telegraph key
maker
Vibroplex Company, Inc.
Physical Description
metal (overall material)
plastic (overall material)
cloth (overall material)
leather (overall material)
Measurements
case: 9 1/8 in x 4 1/4 in x 4 1/4 in; 23.1775 cm x 10.795 cm x 10.795 cm
key: 3 1/2 in x 8 in x 3 1/2 in; 8.89 cm x 20.32 cm x 8.89 cm
ID Number
EM*331629
serial number
73832
collector/donor number
72-18
accession number
294351
catalog number
331629
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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