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
AR. —When the cage is lifted the pivoted armpulls the pawl clear of che rack. A break-age of the rope lets go the pawl arm, andthe spring throws the pawl into the rack. ^ 1566. SAFETY CATCH FOR ELEVATORS.—A lever pawlpivoted to each side of the elevator cage is kept clear from the rack guides by…
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.