A device that allows you to turn a screw or bolt in one direction and then move the handle of the wrench or screwdriver back, without force, in the opposite direction to prepare for the next stroke, without removing the tool from the screw or bolt
A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction move by degrees in one direction only; "a ratcheting lopping tool
A penalty fee charged during off- peak winter months as a result of high electric demand during the summer
A toothed steel bar or device that is usually placed on the lift hill or other hills on a roller coaster that prevents the train from rolling backwards when the ratchet dog (anti-rollback device) attached under the car engages with the ratchet in the steel bar
A claw tooth bar located on the track (most often on the lift hill) into which the anti-rollback device, or ratchet dog engages that will prevent the train from rolling backwards
a device that allows movement in one direction but not the other It has a toothed shaft or wheel on which a pawl rests The pawl is pivoted so that it can move over the teeth of the ratchet in one direction If the pawl or ratchet moves in the reverse direction, the pawl engages the teeth of the ratchet to prevent movement A pawl may also move to and fro to turn a ratchet wheel in one direction
A claw-toothed steel bar running on certain inclines that prevents a train from rolling backwards The ratchet causes the clanking sound associated with the chain lift (also referred to as the anti-rollback device or ratchet dogs) The ratchet itself does not stop the train This is done by a device affixed to the bottom of the car which catches in the ratchet
If a tool or machine ratchets or if you ratchet it, it makes a clicking noise as it operates, because it has a ratchet in it. The rod bent double, the reel shrieked and ratcheted She took up a sheet and ratcheted it into the typewriter
a riding technique in which you pedal in partial strokes in order to clear obsticals
mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction
In a tool or machine, a ratchet is a wheel or bar with sloping teeth, which can move only in one direction, because a piece of metal stops the teeth from moving backwards. The chair has a ratchet below it to adjust the height
If you describe a situation as a ratchet, you mean that it is bad and can only become worse. another raising of the ratchet of violence in the conflict. a machine part consisting of a wheel or bar with teeth on it, which allows movement in only one direction (rochet, from rocquet ). ratchet up to increase something by a small amount, especially after a series of increases, or to increase in this way ratchet sth⇔up. Mechanical device that transmits intermittent motion or permits a shaft to rotate in one direction but not in the opposite one. Reversible ratchets are used on socket wrench handles and are convenient for tightening or loosening bolts in positions where a complete revolution of a wrench handle is impossible. They are used in mechanical jacks to lock the jack rod after each successive lift
a ratchet is an arrangement that permits some economic variable, such as investment or advertising, to increase, but prevents that variable from subsequently decreasing
These are the anti rollbacks that prevent the train from moving back down the lift They are known to make loud clanking sounds
A ratchet clause sets a minimum billing demand that applies during peak and/or non-peak months It is usually applied as a % of the peak demand for the preceding season or year
Increase something by a small amount, especially after a series of increases, or to increase in this way. "Raising the minimum wage would ratchet up real incomes in general."; "The debate will ratchet up a notch on Wednesday when the Commission publishes its report."
If something ratchets down or is ratcheted down, it decreases by a fixed amount or degree, and seems unlikely to increase again. We're trying to ratchet down the administrative costs ratchet up
The constant increase in exploitation due to the fact that positive short-term economic benefits often cannot be counterbalanced by the uncertain predictions of possible deleterious effects
If something ratchets up or is ratcheted up, it increases by a fixed amount or degree, and seems unlikely to decrease again. an attempt to ratchet up the pressure He fears inflation will ratchet up as the year ends ratchet down
a screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle
ratchet
الواصلة
ratch·et
التركية النطق
rätçıt
النطق
/ratʧət/ /rætʧət/
علم أصول الكلمات
[ 'ra-ch&t ] (noun.) 1654. alter. of earlier rochet, from French, alteration of Middle French rocquet ratchet, bobbin, of Germanic origin; akin to Old High German rocko distaff; more at ROCK.