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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 309

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 309
r frame sliding on the ratchet posts A, A;d^ d are the stop-dogs operated by bell-cranklevers to thrust the dogs into the ratchets on therelease of the eye bar b^ by a break in the ropeor hoisting machine. The spring c quickens theoperation of throwing out the dogs. 1218. ELEVATOR DUMPING HEAD,…

Mechanical movements

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