Telegraph Register
name: label: maker
content: J. H. Bunnell & Co.
notes: label: Description (Brief)
content: This later-model Bunnell telegraph register came in a portable carrying case and included capacitors that allowed researchers at the Bureau of Standards to conduct experiments.
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
label: See more items in
content: Communications
creditLine: label: Credit Line
content: from the National Bureau of Standards, thru F. M. Diefendorf
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.316733
label: catalog number
content: 316733
label: accession number
content: 228178
objectType: label: Object Name
content: telegraph receiver
label: Object Name
content: telegraph register
physicalDescription: label: Physical Description
content: wood (case material)
label: Physical Description
content: brass (overall material)
label: Physical Description
content: paper (overall material)
label: Physical Description
content: copper (overall material)
label: Physical Description
content: leather (overall material)
label: Physical Description
content: felt (overall material)
label: Measurements
content: overall: 12 in x 8 in x 18 in; 30.48 cm x 20.32 cm x 45.72 cm