Ratchet wheel 1 is turned clockwise about fixed axis A by pawls 2 and 3 which are connected by turning pairs C and B to slider 4 of slider-crank linkage DEF. Pawl 2 engages wheel 1 when slider 4 moves downward, and pawl 3 when it moves upward. In one complete revolution of crank 5 about fixed axis D, ratchet wheel 1 turns through the angle α=720°/z, where z is the number of teeth on ratchet wheel 1.
$1812$LR,6L$