Ratchet Wheel
a wheel having WHEEL, a wheel having detent, by which motion is imparted or arrested. The teeth are of such shape direction only. The detent may be a as to revolve and pass the detent in one pallet or a pawl. The former receives ing circular movement of the arbor and an intermittent rotation by a reciprocatan intermittent rotation by a reciprocatits cam.
Sometimes the wheel is intermittingly rotated by the motion of one pawl, while the other one acts as a detent in the intervals between the forwhile the other one acts as a deward motions of the former. ated by a ratchet and pawl, so that it