Clamping apparatus

摘要

A clamping apparatus is actuated to clamping position by a reciprocating elongated member having a clutch mechanism which either permits or does not permit reciprocation of the elongate member according to the rotative position of the elongate member in the clutch and a screw means for advancing the clamping face when the unit formed by the clutch in engagement with the elongate member is rotated. The clutch is designed so that it does not disengage until after a workpiece is unclamped.