ratchet wheel

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ratch′et wheel`

art at ratchet

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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ratchet wheel - toothed wheel held in place by a pawl or detent and turned by a leverratchet wheel - toothed wheel held in place by a pawl or detent and turned by a lever
rachet, ratch, ratchet - mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction
wheel - a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

ratchet wheel

nruota dentata
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
South Miami, FL, November 09, 2014 --(PR.com)-- An innovative new tool designed to greatly facilitate a common automotive repair task, the Ratchet Wheel, has been developed by Bradley Hamilton of Cincinnati, Ohio.
subcompact, those characteristics have to be considered for every little part, all the way down to things like the ratchet wheel in its seatbelt retractor system.
A ratchet is a simple mechanical concept: To allow motion in one direction but not the other, a ratchet wheel contains teeth, between which a small lever, called a pawl, fits.
A one-sided ratchet wheel with 36 teeth prohibits the automated erosion wheel from turning back.
That can be done by using the microscopic equivalent of a notched ratchet wheel that can rotate in only one direction.
Gauges are operated by pressure on bellows and springs; on a diaphragm; a Bourdon tube; a helix; by a float in a manometer; a solenoid-operated ratchet wheel; by a multiple contact switch; or electronic signal.