Pulley
121primary V-pulley — (CYT) The pulley which is driven by the engine via a clutch; one of its halves can be slid hydraulically, thus varying the diameter of the steel thrust belt track and changing the transmission ratio …
122belt pulley — noun : a pulley designed to drive or be driven by a belt …
123crown pulley — noun : a pulley in the crown block of an oil well derrick …
124differential pulley — noun : a tackle consisting of a fixed upper double block with pulleys of different diameters fixed together on the same axis, a movable single lower pulley that carries the load, and an endless cable or chain that passes around all the pulleys… …
125expanding pulley — noun : a pulley whose diameter can be varied …
126fast pulley — noun : a pulley fastened rigidly to a shaft …
127jockey pulley — noun or jockey wheel : idler pulley …
128mule pulley — noun : an adjustable idler pulley for a belt; especially : one making an angle turn …