Telegraph Register
name: label: maker
content: Clark, James J.
notes: label: Description (Brief)
content: This is a small telegraph register of that shows the harp design made by James Clark of Philadelphia. The electromagnets and embossing lever are included but there is no tape drive mechanism.
label: Description (Brief)
content: 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.
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
label: See more items in
content: Telegraph Registers
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content: Communications
creditLine: label: Credit Line
content: from James Johnson Clark
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.272431
label: catalog number
content: 272431
label: accession number
content: 53901
objectType: label: Object Name
content: telegraph receiver
label: Object Name
content: telegraph register
label: Other Terms
content: telegraph register; Telegraphy
physicalDescription: label: Physical Description
content: marble (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 2 3/4 in x 2 1/2 in x 4 3/4 in; 6.985 cm x 6.35 cm x 12.065 cm