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 389
378 MISCELLANEOUS DEVICES. 1563. SAFETY CATCH FOR ELEVATORS.—The eccentricsector levers are connected at their pivots to friction sUdes behind the guide rails by links. Thefront slides are ratchet bars onthe face of the guide rails.The balance weight intensifiesthe action of the grips whenthe rope…
Mechanical movements
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