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original late 19th century antique american incandescent lamp socket designed and patented by jacob s. gibbs, for the perkins electric switch & mfg. co., hartford, ct. the hard to find early electric locket consists of a yellow brass shell with single division of insulating material supporting binding-posts for circuit wires and contacts for a lamp, with one of the contacts connected with a conductor bearing a spring-articulated piece and a key switch with a loosely held block adapted to make or break a circuit. the cylindrical socket retains the original common cap with threaded opening. the stamped sheet metal bottom plate is connected with a screw, projecting for the other side of the insulation and adapted to be screwed into a part of the base where the base of the lamp is connected with one of the leads to the bulb's filament. when the key is turned to one position it makes contact and forms an electrical conducting path between the arm and slide. when turned to the "off" position, the path is broken. the improvements to the lamp-socket were designed to provide fewer parts that were cheaply constructed and were easily assembled, with a smoothly operating key mechanism positive in its contacts and quick in its break.
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original and intact late 19th century american perkins incandescent lamp shell socket with intact key switch
SKU:
UR-12550-12
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