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ratchet wheel
noun
- 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
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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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