DEVICE FOR HOLDING OF WORKING TOOL OF SHOCK-ACTION MACHINE Russian patent published in 1998 - IPC

FIELD: shock-action machine; safety devices. SUBSTANCE: device has body with central through hole made as polygon on the side of working tool positioning. It also includes side turnable key with cam, tooth and spring mounted on rod and resting on body through ears on the side of working tool. Device has body turning stop in the form of bolt brace of ears on the side of machine shaft, and plunger designed to fix key in position. Key tooth is oriented so that it is located in hollow of central through hole of body in operating position, thus forming the smallest arm of shock loading during its impact with working tool. Spring engages cam through plunger. EFFECT: reliable and long-time operation of machine. 3 dwg