Research Type
CuratorPerson
Shaun SliferDate
Nov 18, 2020Notes
A mining or caving lamp has calcium carbide placed in a 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 into 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.Research Type
CuratorPerson
Shaun SliferDate
Nov 18, 2020Notes
(from halslamppost.com)
The Shanklin Manufacturing Co. of Springfield, IL was a prominent producer of miner's carbide lamps with its famous "Guy's Dropper" carbide cap lamp. Designed by Frank Guy, he obtained his first patent in 1910 (#974,054 of Oct. 25, 1910) and two additional patents (#1,097,716 of May 26, 1914 and #1,198,537 of Sept. 19, 1916) while developing a business arrangement with brothers George and Edgar Shanklin to manufacture the lamps. In 1913, the brothers formed the Shanklin Manufacturing Co. to mass produce the Guy's Dropper lamp.
The war years of 1917-18 substantially increased the demand for carbide lamps as the need for coal and minerals peaked. The Guy's Dropper benefited with this demand with increased production of both the cap and hand lamps.
As with other carbide lamp manufacturers, the 1920s brought a decline in the demand for acetylene lamps and problems for the Shanklin company. In 1932, the Shanklin Manufacturing Co. was sold to the Universal Lamp Co. where the Guy's Dropper continued in production as a best-selling Universal product until the company ceased manufacturing carbide lamps in 1960. (See Clemmer, American Miner's Carbide Lamps, pp 85-88 and Thorpe, Eureka #9, pp 2-13 for the definitive article on Guy's Dropper cap lamp variations)Research Type
CuratorPerson
Shaun SliferDate
Nov 18, 2020Notes
Clemmer's Rarity: 2 (https://caves.org/member/mfraley/rarety.htm)