Positive grip cut-off

Claim 1

IN A MECHANISM FOR SHEARING A WORKPIECE FROM A LENGTH OF STOCK, THE COMBINATION COMPRISING A FRAME, A HOLDING DIE MOUNTED IN SAID FRAME FOR RECEIVING AN HOLDING A LENGTH OF STOCK, A MOVING FRAME SLIDABLY MOUNTED IN SAID FRAME, A FIRST DIE HALF MOUNTED TO SAID MOVING FRAME, A PLUNGER SLIDABLY MOUNTED IN SAID MOVING FRAME, A SECOND DIE HALF SECURED TO SAID PLUNGER, SAID FIRST AND SECOND DIE HALVES ADAPTED TO BE CLOSED UPON EACH OTHER TO FORM A SINGLE DIE CAPABLE OF GRIPPING A WORKPIECE THEREBETWEEN, SAID FIRST AND SECOND DIE HALVES BEING ADJACENT SAID HOLDING DIE AND DEFINING A SHEARING PLANE THEREBETWEEN, AN OPERATING ROD SLIGHTLY MOUNTED IN SAID MOVING FRAME, SAID OPERATING ROD, SAID PLUNGER, AND A PORTION OF SAID MOVING FRAME DEFINING THEREBETWEEN A CAVITY WITHIN SAID MOVING FRAME, AND ELASTICALLY DEFORMABLE HYDRAULIC MATERIAL IN SAID CAVITY, SAID PORTION OF SAID MOVING FRAME INCLUDING MEANS RESPONSIVE TO SAID HYDRAULIC MATERIAL FOR MOVING SAID FIRST DIE HALF, WHEREBY ADVANCEMENT OF SAID OPERATING ROD ADVANCES SAID SECOND DIE HALF THROUGH SAID HYDRAULIC MATERIAL INTO CONTACT WITH THE WORKPIECE AND SUBSEQUENTLY MOVES SAID MOVING FRAME AND SAID FIRST DIE BY MEANS OF SAID HYDRAULIC MATERIAL INTO ENGAGEMENT WITH THE WORKPIECE, AND WHEREBY CONTINUED MOVEMENT OF SAID OPERATING ROD THEREAFTER EFFECTS MOVEMENT OF SAID FIRST AND SECOND DIE HALVES IN A SINGLE DIRECTION RELATIVE TO SAID HOLDING DIE TO SHEAR THE WORKPIECE FROM THE LENGTH OF STOCK.