Differential pulley

(Mach.)

A portable hoisting apparatus, the same in principle as the differential windlass.

A hoisting pulley to which power is applied through a differential gearing.

differential pulley

[‚dif·ə′ren·chəl ′pu̇l·ē] (mechanical engineering) A tackle in which an endless cable passes through a movable lower pulley, which carries the load, and two fixed coaxial upper pulleys having different diameters; yields a high mechanical advantage.

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