Sheave Sheave A sheave () is a pulley with a grooved wheel for holding a belt, wire rope, or rope. The grooved wheel spins on an axle or bearing inside the frame of the block. This allows the wire or rope to move freely minimizing friction and wear on the cable. Sheaves can be used to redirect a cable or rope, lift loads, and transmit power. The words "sheave" and "pulley" are sometimes used interchangeably. A sheave can also refer to a pulley which has an adjustable operating diameter for use with a mechanical belt. This is accomplished by constructing the
Dump tackle are those who slow down or stop before contact. Dump tackle The dump tackle is a tackling technique favoured mainly by rugby league players. The tackler wraps his arms around the ball carrier's thighs and lifts him a short distance in the air before forcibly driving him to the ground. The tackler must go to ground with the ball carrier for the tackle to be legal. In 2005 the IRB ruled that "the act of lifting an opponent off his feet in a tackle AND dropping or 'spearing' that player so that his head and/or upper body comes into contact