Mechanical Telegraph Sounder
date: label: date made
content: ca 1905
name: label: maker
content: Chester, Charles T.
label: maker
content: Chester, J. N.
label: maker
content: Wessmann, Martin F.
label: maker
content: General Electric Company
label: maker
content: Manhattan Electrical Supply Co.
notes: label: Description (Brief)
content: 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.
label: Location
content: Currently not on view
topic: label: web subject
content: Communication, telegraph
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Ralph H. Pope
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181668
label: accession number
content: 32772
label: catalog number
content: 181668
objectType: label: Object Name
content: telegraph sounder
label: Object Name
content: telegraph transmitter
label: Object Name
content: acoustical sounder
label: Other Terms
content: telegraph transmitter; Telegraphy
physicalDescription: label: Measurements
content: wooden box: 1 1/4 in x 2 1/4 in x 1 1/2 in; 3.175 cm x 5.715 cm x 3.81 cm
label: Measurements
content: telegraph sounder: 1/2 in x 5/8 in x 1 5/8 in; 1.27 cm x 1.5875 cm x 4.1275 cm