Round belt pulleys are mechanical devices which transmit rotational motion around an axle. They are used to lift loads or to apply/transmit power. The round belt pulley accommodates a belt, cable, or ...

V-belt pulleys (also called vee belt sheaves) are devices which transmit power between axles by the use of a v-belt, a mechanical linkage with a trapezoidal cross-section. Together these devices offer ...

and have horns, K. There is a half pulley, L, attached to the middle of axle It ; it has a pin, i, passing through it. which, when the horns, K, are elevated catches into a recess, , on a lever ...