differential-windlass

differential windlass

noun
a pair of hoisting drums of different diameter turning at the same rate, such that a pulley suspended below them on a line wound on the larger drum and unwound from the smaller drum is raised with mechanical advantage.
Also called Chinese windlass.
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World English Dictionary
differential windlass
 
n
Also called: Chinese windlass a windlass employing the velocity ratio incurred in unwinding from a small drum while winding onto a larger drum rotating at a common speed

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