Cooper-Hewitt "Uviarc" lamp

Cooper-Hewitt "Uviarc" lamp

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Description (Brief)
Cooper-Hewitt "Uviarc" mercury vapor lamp, ca. 1919. No base - double-ended quartz discharge tube with metal sleeve at one end, ceramic insulated wire lead at other end. Tungsten anode, mercury pool cathode. Tipped quartz envelope with bulbous end. Unit appears to be of the 220 volt rating. Lamp starts by tipping unit such that the mercury runs from one end to the other, making contact with both electrodes initiating an arc. The electrical arc is tightly confined along the axis of the lamp. This is a mercury vapor lamp designed to produce ultraviolet radiation for germicidal purposes. "8854" and "Uviarc" stamped on base. Reference: Leroy J. Buttloph, “The Cooper Hewitt Mercury Vapor Lamp,” GE Review 23, no. 9 (September 1920), 741-751. Note: General Electric purchased the Cooper Hewitt Vapor Lamp Company in 1919.
Currently not on view
Object Name
discharge lamp
ultraviolet lamp
Other Terms
discharge lamp; electric lamp
date made
ca 1919
Cooper Hewitt Electric Company
arc lamp: 9 3/4 in x 1 1/4 in x 2 3/4 in; 24.765 cm x 3.175 cm x 6.985 cm
ID Number
catalog number
accession number
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Work and Industry: Electricity
Data Source
National Museum of American History
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