Telegraph Key

Description (Brief):

Telegraph keys are electrical on-off switches used to send messages in Morse code. The message travels as a series of electrical pulses through a wire. The operator moved the lever on this so-called "double speed key" from side to side to make signals. This key has a switch on the side called a circuit-closer that takes the key off-line when not in use.

Description (Brief)

Hand telegraph key with control knob arranged on a spring for side-ways motion. Contact points are on either side of key bar. A line switch is included on the base. Maker claims operators of this style key will not be affected by cramp. Reference: J. H. Bunnell & Co. Catalog, 1918, page 4.

Date Made: ca 1918

Maker: J. H. Bunnell & Co.

Location: Currently not on view

See more items in: Work and Industry: Electricity, Telegraph Keys, Communications


Exhibition Location:

Credit Line: from Franklin Wingard

Data Source: National Museum of American History

Id Number: EM.320857Catalog Number: 320857Accession Number: 241556

Object Name: telegraph keyOther Terms: telegraph key; Radio

Physical Description: brass (overall material)metal (overall material)plastic (overall material)Measurements: overall: 1 1/4 in x 2 1/4 in x 5 in; 3.175 cm x 5.715 cm x 12.7 cm


Record Id: nmah_705838

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