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Ratchet   Listen
noun
Ratchet  n.  
1.
A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc.
2.
A mechanism composed of a ratchet wheel, or ratch, and pawl. See Ratchet wheel, below, and 2d Ratch.
Ratchet brace (Mech.), a boring brace, having a ratchet wheel and pawl for rotating the tool by back and forth movements of the brace handle.
Ratchet drill, a portable machine for working a drill by hand, consisting of a hand lever carrying at one end a drill holder which is revolved by means of a ratchet wheel and pawl, by swinging the lever back and forth.
Ratchet wheel (Mach.), a circular wheel having teeth, usually angular, with which a reciprocating pawl engages to turn the wheel forward, or a stationary pawl to hold it from turning backward. Note: In the cut, the moving pawl c slides over the teeth in one direction, but in returning, draws the wheel with it, while the pawl d prevents it from turning in the contrary direction.






Collaborative International Dictionary of English 0.48








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"Ratchet" Quotes from Famous Books



... nail, brad, tack, skewer, staple, corrugated fastener; clamp, U-clamp, C-clamp; cramp, cramp iron; ratchet, detent, larigo[obs3], pawl; terret[obs3], treenail, screw, button, buckle; clasp, hasp, hinge, hank, catch, latch, bolt, latchet[obs3], tag; tooth; hook, hook and eye; lock, holdfast[obs3], padlock, rivet; anchor, grappling iron, trennel[obs3], stake, ...
— Roget's Thesaurus

... 2, it will be seen that when the large wheel which projects outside of the box is revolved by a crank, it turns the small ratchet wheel, which bears an eccentric pawl. (The crank has been removed in Fig. 2; it is seen in Fig. 1.) The central wheel has only six cogs. The pawl is pressed into one of these cogs by a spring. It pushes the central wheel around one-sixth of its circumference, ...
— Scientific American Supplement, No. 561, October 2, 1886 • Various



Words linked to "Ratchet" :   pawl, rachet up, dog, march on, pass on, progress, move on, ratchet down, rachet, detent, spiral ratchet screwdriver, ratch



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