Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 313
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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