Barrel lock ferrule extractor

Details Barrel lock ferrule extractor Barrel lock ferrule extractor

1981-06-04

1982-12-07

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29258, 29263, 411433, B23P 1904

Patent

active

043619444

ABSTRACT:
An extractor for the flanged tubular ferrule which surrounds the head of the barrel lock of a kilowatt-hour meter comprises an actuating screw and a two-piece clamp. The clamp has a threaded hole and two recesses of different diameters, the larger of which is adapted to fit around the flange of the ferrule and the smaller of which is adapted to fit around the body of the ferrule. To remove the ferrule, the two pieces of the clamp are fitted over the ferrule and then fastened together by bolts. Then the actuating screw is screwed into the clamp until the inner end of the screw abuts against the head of the barrel lock which is inside the tubular ferrule. Continued rotation of the actuating screw in a tightening direction causes the clamp to move outwardly on the threads of the screw and in so doing the captive ferrule is pulled out of the cover housing. Following removal of the ferrule, the barrel lock itself may be removed by a barrel lock extractor, preferably of the type described in my U.S. Pat. No. 4,060,884, granted Dec. 6, 1977.

REFERENCES:
patent: 165562 (1875-07-01), Gravelius
patent: 1717822 (1929-06-01), Wentworth
patent: 2705983 (1955-04-01), Guadagna
patent: 4235004 (1980-11-01), Floyd

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