Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 68
isks to the shaft eitherif it is rotated in the direction for hoisting, or if the shaft attempts to revolve in the oppositedirection under the pull of the load. The parts being thus clamped together act as one, andthe ratchets offer no resistance to the effort of the operator in hoisting. When the…
Mechanical engineering
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