Vibroplex Telegraph Key

Description (Brief):

Semi-automatic keys like this "Vibroplex" automatically produced rapid morse code dots by using a weighted pendulum to quickly make and break contact in the electrical circuit. The operator would make the dashes manually but could send much faster than with an ordinary key. This key was used by Margaret M. A. Donahue (1892-1984), a Western Union operator.

Description (Brief)

Margaret Donahue received her radio license 17 February 1913. She attained national attention in 1917 as the "first woman in the United States to get a first-class radio operator's license," when she volunteered her services as the country entered World War I.

Description (Brief)

The key is housed in its original carrying case. Operators often owned their own keys and would adjust the settings to fit their personal preference. They would take the key with them after their shift. The box is wood with a paper covering, "18" penciled inside lid. Printed on key's label: "Trade "Vibroplex" Mark No. 72839 / U.S.Patents No.767,303 No.812,183 No.842,154 No.1,042,457 No.1,043,449 No.1,260,008 / The Vibroplex Company, Inc. 253 Broadway, New York". Plug stamped "W.U.Tel.Co." Faded decorative painted marks on base.

Date Made: ca 1919

Maker: Vibroplex Company, Inc.

Location: Currently not on view

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

Exhibition:

Exhibition Location:

Credit Line: from Homer E. Johnson

Data Source: National Museum of American History

Id Number: 1979.1016.01Accession Number: 1979.1016Catalog Number: 1979.1016.01

Object Name: sending keytelegraph keyOther Terms: telegraph key; Telegraph

Physical Description: metal (overall material)plastic (overall material)slate (overall material)cloth (overall material)rubber (overall material)Measurements: key: 9 cm x 9 cm x 20 cm; 3 9/16 in x 3 9/16 in x 7 7/8 inbox: 12 cm x 11 cm x 23.5 cm; 4 3/4 in x 4 5/16 in x 9 1/4 in

Guid: http://n2t.net/ark:/65665/ng49ca746b4-3f3c-704b-e053-15f76fa0b4fa

Record Id: nmah_713381

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