Telegraph Key

<< >>
Description (Brief)
Telegraph keys are electrical on-off switches used to send messages in Morse code. The message travels as a series of electrical pulses through a wire. The operator pushes the key’s lever down briefly to make a short signal, a dot, or holds the lever down for a moment to make a slightly longer signal, a dash. The sequence of dots and dashes represent letters and numbers. This is a replica of an early type of lever key used by Samuel Morse and Alfred Vail.
Location
Currently not on view
date made
1898
inventor
Vail, Alfred
Morse, Samuel Finley Breese
maker
Model Shop, United States National Museum
place made
United States: District of Columbia, Washington
Physical Description
wood (base material)
brass (body material)
Measurements
overall: 3 1/8 in x 2 in x 6 3/4 in; 7.9375 cm x 5.08 cm x 17.145 cm
ID Number
EM.181770
catalog number
181770
nonaccession number
1995.3095
Credit Line
Made in museum
See more items in
Work and Industry: Electricity
Communications
Telegraph Keys
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object