Telegraph Sounder

Description (Brief)
Telegraph sounders convert electrical pulses into audible sounds and are used to receive Morse code messages. The message travels as a series of electrical pulses through a wire. Short pulses make a dot, slightly longer pulses make a dash. The sequence of dots and dashes represent letters and numbers. The pulses energize the sounder’s electromagnets which move a lever-arm. The arm makes a loud “click” when it strikes a crossbar and the operator translates the pattern of sounds into the original language. This unit, made by well-known New York manufacturer Tillotson & Co., and is a tyipcal unit from the latter 19th Century.
Location
Currently not on view
Object Name
telegraph sounder
maker
L. G. Tillotson & Co.
Physical Description
wood (overall material)
brass (overall material)
cloth (overall material)
Measurements
overall: 3 1/2 in x 3 in x 5 in; 8.89 cm x 7.62 cm x 12.7 cm
ID Number
EM*328387
catalog number
328387
accession number
270454
See more items in
Work and Industry: Electricity
Communications
Telegraph Sounders
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object