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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.
differential windlass
noun
- a windlass employing the velocity ratio incurred in unwinding from a small drum while winding onto a larger drum rotating at a common speed Also calledChinese windlass
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