Hindley's screw

noun Hind·ley's screw \ˈhī|n(d)lēz-, ˈhi|\

Definition of Hindley's screw

  1. :  an endless screw or worm shaped like an hourglass to fit a part of the circumference of a worm wheel so as to increase the bearing area and thereby diminish the wear —called also hourglass screw

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Origin and Etymology of hindley's screw

after Henry Hindley, 18th century English clockmaker

Seen and Heard

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to cast off or become cast off

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