vintage carbide miner's lamp Auto Lite Universal Lamp Co Acetylene
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Auto-Lite Carbide Miners Lamp with Blade Hook ca 1940>> Written on the rubber-like base: "Bumpergrip PATD USA 1,790,709 British 354,676 Canada 310,911 Blade is used to attach lamp to miners hard hat. Photographed>> Carbide lamps, also known as acetylene gas lamps, are simple lamps that produce and burn acetylene (C2H2) which is created by the reaction of calcium carbide (CaC2) with water. The conventional format of producing acetylene in a lamp is by putting the calcium carbide in the lower chamber (the generator). The upper reservoir is then filled with water. A threaded valve or other mechanism is used to control the rate at which the water is allowed to drip onto the chamber containing the calcium carbide. By controlling the rate of water flow, the production of acetylene gas is controlled. This, in turn, controls the flow rate of the gas and the size of the flame at the burner, (and thus the amount of light it produces).The Universal Lamp Company was organized in 1913 by Jacob S. Sherman to produce his Auto-Lite carbide lamps. Sherman first lamp patent was filed in 1914 and awarded as #1,167,942 on Jan. 11, 1916 that would identify the pronounced crown top and concave, urn-shaped design of all Auto-Lite lamp tops for the length of manufacture
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