Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 37
See No. 27 for the power. 41. CHINESE SHAFT DERRICK.—The sheaves suspended from the upper part of thederrick legs allows the bucket to be raisedabove the mouth of the shaft or pit by thedifferential windlass. 42. COMPOUND WEIGHT MOTOR, fora limited fall. The power is only equal to one-half of one… … iwvwwwv::^ 44. SPANISH WINDLASS.—Much used onover-truck frames for suspending the load. 45. ROPE GRIP HOOK—for takinga temporary bite on a hawser.
Mechanical movements
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