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back gear

American  

noun

  1. (in a lathe) one of several gears for driving the headstock at various speeds.


Other Word Forms

  • backgeared adjective

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The head stock of a lathe—the back gear in particular—is about as hard a thing to improve as the link motion of a locomotive.

From Scientific American Supplement, No. 643, April 28, 1888 by Various

Another plan is to let the back gear move endwise and bush its bearing holes with hardened steel bushes.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

The various motions of the machine are as follows: There are 16 speeds of work table, 8 with the single, and the same with the back gear.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

The back gear is arranged to drive the spindle direct without the power requiring to be transmitted through a shaft, which induces vibration.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Gallagher pulled the reversing lever into the back gear and sent the failing steam whistling into the chilled cylinders with cautious little jerks at the throttle.

From Empire Builders by Hambidge, Jay