Telegraph Apparatus

Description (Brief)
This telegraph system is a replica of one of the 1844 units used on Samuel Morse’s line between Baltimore and Washington. The replica includes the key, paper tape reel, and register. Telegraph registers are electrically-activated printers that receive Morse code messages. The message travels as a series of electrical pulses through a wire. The pulses energize the register’s electromagnets which move a lever-arm holding a pen or stylus. A clockwork mechanism pulls a strip of paper across the pen or stylus, recording the message. Short pulses draw or emboss a dot, slightly longer pulses a dash. The sequence of dots and dashes represent letters and numbers.
Location
Currently not on view
Physical Description
wood (overall material)
brass (overall material)
paper (overall material)
plastic (overall material)
copper (overall material)
steel (overall material)
Measurements
overall: 11 in x 30 in x 7 in; 27.94 cm x 76.2 cm x 17.78 cm
ID Number
EM.332160
accession number
294351
catalog number
332160
collector/donor number
100-389
Credit Line
from Western Union Corporation
subject
Communication, telegraph
See more items in
Work and Industry: Electricity
Communications
Telegraph Registers
Data Source
National Museum of American History, Kenneth E. Behring Center

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