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Restored Open Carbon Arc Lamp From 1889 In Operation

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The carbon arc lamp was the very first successful artificial electric light technology and predated invention of the light bulb by several decades. This specific lamp is typical of many first generation carbon arc lamps commonly used from 1880 to 1895. The first pendent type open carbon arc lamps of this general design were introduced by Charles Brush in the late 1870's. They gained wide spread acceptance as the worlds first electric street lamps. By the late 1880's numerous manufacturers were making open arc lamps similar to the one demonstrated in this video. Many hundreds of thousands of these once ubiquitous lamps were in use urban areas all over the world in the last two decades of the 19th century.
An "open arc lamp" as demonstrated in this video is one where the electric arc is burning in open air. Open arc lamps became obsolete in the late 1890's when enclosed carbon arc lamps were introduced. The later "enclosed arc lamps" of the 1895-1910 era use a small inner glass enclosing globe to surround the arc. The enclosing globe extended the burn time of the carbon rods from 10 hours as with the lamp in this video to 90 or more hours. By excluding oxygen from the arc with an enclosing globe the operation of these lamps became much more economical.
The specific lamp in this video is what was historically known as the "Ward Arc Lamp". It was sold by the Electric Construction and Supply Company of New York from 1888 through about 1894. The specific lamp in this video sold new for $50 in 1890.
A BIG thank you goes to Ingenium - Canada's Museums of Science and Innovation located in Ottawa, Ontario, Canada for their assistance and support in my research regarding the specific lamp in this video.
The lamp in this video is operating at 8 amps constant current pulsed DC at 55 volts using standard 1/2" diameter solid carbon rods.
An "open arc lamp" as demonstrated in this video is one where the electric arc is burning in open air. Open arc lamps became obsolete in the late 1890's when enclosed carbon arc lamps were introduced. The later "enclosed arc lamps" of the 1895-1910 era use a small inner glass enclosing globe to surround the arc. The enclosing globe extended the burn time of the carbon rods from 10 hours as with the lamp in this video to 90 or more hours. By excluding oxygen from the arc with an enclosing globe the operation of these lamps became much more economical.
The specific lamp in this video is what was historically known as the "Ward Arc Lamp". It was sold by the Electric Construction and Supply Company of New York from 1888 through about 1894. The specific lamp in this video sold new for $50 in 1890.
A BIG thank you goes to Ingenium - Canada's Museums of Science and Innovation located in Ottawa, Ontario, Canada for their assistance and support in my research regarding the specific lamp in this video.
The lamp in this video is operating at 8 amps constant current pulsed DC at 55 volts using standard 1/2" diameter solid carbon rods.
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