Telegraph Register

Description (Brief):

This experimental telegraph register was made by James Green and was reportedly used by Rev. Henry Sheib of Baltimore and Samuel Morse on private line demonstrations in the late 1830s. After talking with Joseph Henry, Morse adopted u-shaped electromagnets like the one used on this object. The large wooden pulley supported a hanging weight that pulled the paper tape under the stylus.

Description (Brief)

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.

Date Made: 1837

Maker: Green, James

Location: Currently not on view

Web Subject: Communication, telegraph


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


Exhibition Location:

Credit Line: from Rev. Henry Schieb

Data Source: National Museum of American History

Id Number: EM.181670Catalog Number: 181670Accession Number: 32976

Object Name: telegraph receivertelegraph register

Physical Description: wood (overall material)steel (overall material)copper (overall material)fiber (overall material)brass (overall material)Measurements: overall: 11 in x 8 in x 16 1/2 in; 27.94 cm x 20.32 cm x 41.91 cm


Record Id: nmah_706635

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