internal gear

noun

, Machinery.

There are three general methods of transmitting the power: by chain; by worm drive, and by internal gear drive.

These little internal-gear sprockets were hung on double-shrouded pinions secured to each end of the jackshaft.

A solid disc or housing fitted against both ends of the pinion to prevent the internal gear from working off sideways.

The face plate is 12 feet diameter, cast with internal gear at the back.

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