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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 341

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox, 1914, leaf 341
. 1362. BLACKSMITHS HELPER, or foot helve hammer. Operated by the footon the treadle. Hammer held up by thespring. 1363. REVOLVING RAPID-BLOW HAM-MER.—The centrifugal action of the revolvingarms throws the hammers outward. … 1364. HELVE TRIP HAM-MER.—An ancient device yet inuse. The treadle stops the actionof the hammei by disengaging thebell-crank catch h. Used for smallwork« MILL AND FACTORY APPLIANCES. 33^

Mechanical movements

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