Clamping jaw for materials testing machine - has profiled portions in curved pattern on face offset from jaw centre

摘要

The clamping mechanism jaw is partic. for material-testing machines, having a profiled face. The profiled portions run in a curved pattern over the face, and can be in the form of teeth, running in circles or a spiral. The centre of the circle or spiral can be offset from that of the jaw face. There can be profiled portions on both sides of the jaw, which can be held in place by a single screw, preferably in the centre. The design avoids the risk of notching and consequent breakage of the test piece, and also of the jaw teeth.