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Scientific American, Vol. 91, No. 22 (1904) (1904)

leaf 12

An illustration from Scientific American, Vol. 91, No. 22 (1904), 1904, leaf 12
er, a screw- proved type of hinge adapted to overcome this diffi- master key, in the hands of the proprietor, by which driver, and a wire-tightener. It consists essentially of culty. The construction also provides easy access to the lock may be operated at any time. a pair of pivoted levers. the… … fall by any chance through any of the openings of the ot and then shearing it by COMBINATION TOOL. well. It consists of a wire net, held on two sides by SEPARABLE HINGE, pressure on the levers. Twu rods, which are in turn supported by strut arms. The claws are riveted to the levers, one adjacent to…

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