Abstract: A ratchet mechanism comprising a rotatable member incorporating a toothed periphery, the rotatable member being suitably mounted to allow free rotation thereof, a pawl incorporating apparatus for engaging the toothed periphery, the pawl being suitably mounted to permit movement thereof from a position in which the pawl allows said rotatable member to rotate freely in either direction of rotation to a position in which the pawl prevents said rotatable member from rotating in one direction, and selectively operable apparatus to move the pawl between said positions, said selectively operable apparatus incorporating an over-dead-center spring arrangement to bias the pawl into the selected position.

Abstract: An assembly is disclosed comprising a turnable member and a mounting therefor. The turnable member may be one cam of a cam set for gripping a rope and acting as a cleat. The turnable member has a through bore and is mounted on a pillar of a mounting member by a plastics sleeve which is deformable so that a press fit of the pillar in the sleeve is achieved. The sleeve may have a flange by which the turnable member is retained in position. The assembly may be assembled in a factory as a unit and can be mounted by passing a screw or bolt through the assembly.