Telegraph Register
date: label: date made
content: 1891
name: label: maker
content: E. S. Greeley & Company
notes: label: Description (Brief)
content: This telegraph register shows refinements made by the late 1800s. A heavy brass casing holds the spring-powered clockwork mechanism while the mass-produced electromagnets are set outside the case at one end. 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
label: See more items in
content: Communications
creditLine: label: Credit Line
content: from the E. S. Greeley Co.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.181118
label: catalog number
content: 181118
label: accession number
content: 25412
objectType: label: Object Name
content: telegraph receiver
label: Object Name
content: telegraph register
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: copper (overall material)
label: Physical Description
content: wood (overall material)
label: Physical Description
content: rubber (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 5 1/2 in x 4 1/2 in x 9 1/2 in; 13.97 cm x 11.43 cm x 24.13 cm