tumbler gear

noun

Machinery.

a transmission having gears actuated by a tumbler.

tumbler gear

noun

a train of gears in which the gear-selection mechanism is operated by tumblers

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Example Sentences

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Then the clattering of iron links, as the cables were ranged for letting go, was followed by a whoop of interest, and the ex-salesman popped into sight in the bows, deep in an examination of the tumbler gear that released the big anchors.