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| Lu-Mi-Num Lug Clamp Bottom Back | LUMINUM LUG LOCK BASE - Aluminum cap lamp marked LU-MI-NUM trademark Fred R. Belt Company on side of lamp, with lug lock on side, cast reflector, manufactured by Fred R. Belt Co. Chicago IL from 1922 to 1933 (The "Lu-mi-num" brand cap and hand lamps produced by the Fred R. Belt Company in Chicago, Illinois represent a substantial change from the standard carbide lamp designs of the day. These lamps were fabricated from an alloy of aluminum and copper with a die-cast body. The earliest lamps used a screw thread attachment of the top and bottom but it is thought these lamps were a trial option before the final design using the double cam lock attachment as shown here was adopted for production. The screw thread lamps are far more scarce and much harder to find. The Lu-mi-num lamp was patented (#1,612,694 and #1,612,695) by Belt on Dec. 28,1926. The unusual ribbed, heat dissipating design thought by some to resemble a hand grenade is distinctive to this lamp. The Belt Co. left the mine lamp business about 1933. See Clemmer, American Miners' Carbide Lamps, p 67) |  Original Image |
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