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View synonyms for ratchet wheel

ratchet wheel

noun

  1. a wheel, with teeth on the edge, into which a pawl drops or catches, as to prevent reversal of motion or convert reciprocating motion into rotatory motion.


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Word History and Origins

Origin of ratchet wheel1

First recorded in 1770–80
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Example Sentences

When the tympanum vibrates under the influence of the voice, the stylus acts as a pawl and turns a ratchet-wheel.

SB is the primitive radius of the club tooth wheel, but both primitive and real radius of the ratchet wheel.

On the pendulum he had a little ratchet wheel, R, having thirty teeth.

On the side of the clock case was a contact maker, which closed the circuit by the pin on the ratchet wheel, R, once every minute.

An' this ratchet-wheel isn't on the pawl prop'ly—not like what this book says it ought to be.

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