Universal Lamp Co. Auto-Lite Brass Coal Miner's Carbide Mining Lamp Light helmetantique brass Auto Lite carbide miner's lamp, manufactured by the Universal Lamp Co. Carbide lamps produce light by burning acetylene gas, which is created when water from an upper chamber drips onto calcium carbide in the lower chamber. The lamp body is made of brass and features a lever mechanism to adjust the water flow and thus the gas production. It was designed for use on a soft cap or hat. The Universal Lamp Co., which made these lamps, was