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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 266

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 266
1026. SAFETY CENTRIFUGAL HOOKS.—Hooks are retained by springs until the cen-trifugal force of excessive speed throws them outto catch the pins in the fixed plate. 1027. CRANK MOTION for quick return ola lever. A, fulcrum of lever. MOTION AND DEVICES CONTROLLING MOTION. 259 … 1028. CENTRIFUGAL SAFETY CATCHfor hoisting drums. The studs D, D, D are fixedto the hoisting drum frame. B is a flange fastto the drum shaft and to which is pinioned thesafety hooks. At ordinary speed of the drumthe hooks hang back so as not to touch the studs.An unusual acceleration of speed…

Mechanical movements

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