A pivoted tongue, or sliding bolt, on one part of a machine, adapted to fall into notches, or interdental spaces, on another part, as a ratchet wheel, in such a manner as to permit motion in one direction and prevent it in the reverse, as in a windlass; a catch, click, or detent. See Illust. of Ratchet Wheel.
The j-shaped gripper used on overhead dip stations to grab the rack of tools to be dip coated. These are usually pneumatically actuated in pairs.
pivoted tongue or sliding bolt on one part of a machine that is adapted to fall into notches or interdental spaces on another part (as a ratchet wheel) so as to permit motion in only one direction
A pivoted or hinged part used to cause uni-directional motion over a definite distance or angle of rotation. Also called a Dog or Hand.
a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
a small bar with a tooth at each end that drops into the teeth of a gear, ratchet, or pinion
a sort of catch that fits into a ratchet wheel and pushes it around, or it may be used as a catch to prevent the backward motion of a windlass or the wheel on a derrick
The part in a ratcheting device that moves to catch the teeth on a gear. On a bicycle it can be found in most freehubs and freewheels.
a pivoted crawl that catches the teeth of a rack or wheel to prevent reverse movement; during running, it rides over the teeth and drops down to engage the teeth by gravity or spring when the motion stops
The device that acts directly upon the ratchet. The pawl ensures the one way travel of the ratchet, which adds safety in case the raising/lowering force is suddenly withdrawn.
Also known as "dog". It is a gear locking device for positively holding the gears against movement.
A short bar of wood or iron, fixed close to the capstan or windlass of a ship, to prevent those engines from rolling back or giving way when they are charged with any great effort.
A device used to hold machinery against undesired rotation by engaging a ratchet.
A device mounted on a oscillating arm used to advance a ratchet. Commonly known as a "click".
A pivoted bar on a car brake wheel adapted to fall into the notches or teeth of a wheel as it rotates in one direction, and to restrain it from backward motion. See Ratchet and Brake Ratchet.
Device which, when used on a winch, contains the ratchet so that it doesn't turn, to keep the load from pulling the cable back off the spool where it is wound. The pawl moves from one ratchet tooth to the next, when the cable is turned.
