Clamp for unit die mechanism

Claim 1

IN A UNIT DIE MECHANISM FOR INJECITON MOLDING AND CASTING, WHICH MECHANISM IS OF THE TYPE INCLUDING, A MEMBER HAVING A SURFACE IN PARALLEL REALATION WITH THE PARTING PLANE DEFINED BY THE MECHANISM, A CAVITY PLATE HAVING INNER AND OUTER ENDS DEFINED BY RESPECTIVE PARALLEL FACES AND HAVING A SURFACE EXTENDING BETWEEN SAID FACES AT A RIGHT ANGLE THERETO, WHICH SURFACE IS IN CONTACT WITH THE FIRST MENTIONED SURFACE, A BLOCK SECURED TO SAID MEMBER AND HAVING A FACE IN INTERFITTING ENGAGEMENT WITH THE FACE DEFINING THE INNER END OF SID CAVITY PLATE, THE IMPROVEMENT WHICH COMPRISES, SAID MEMBER BEING PROVIDED WITH AN EXTENSION PROJECTING OUTWARDLY OF SAID MECHANISM BEYOND THE OUTER END OF SID CAVITY PLAE, SAID EXTENSION INCLUDING MEANS DEFINING A WALL EXTENDING GENERALLY PERPENDICULAR TO SAID PARTING PLANE AND FACING INWARDLY OF SAID MECHANISM, SAID CAVITY PLATE HAVING A LEDGE ADJACENT THE FACE THEREOF DEFINING ITS OUTER END, SAID LEDGE EXTENDING GENERALLY PARALLEL WITH SAID PARTING PLANE AND FACING THE SAME, A CLAMP BLOCK SECURED TO SAID PROJECTION BY FASTENING MEANS WHICH ACT IN A DIRECTION GENERALLY PERPENDICULAR TO THE PARTING PLANE, WHICH CLAMP BLOCK HAS GENERALLY OPPOSITLEY FACING SURFACES IN TIGHT ABUTTING ENGAGEMENT, RESPECTIVELY, WITH SAID WALL AND A PORTION OF THE FACE DEFINING THE OUTER END OF SID CAVITY PLATE, SAID CLAMP BLOCK HAVING A PORTION THEREOF DEFINING A LEDGE IN ABUTTING RELATION WITH THE LEDGE OF SAID CAVITY PALTE, WHEREBY SAID CLAMP BLOCK SERVES BOTH TO SECURE SAID CAVITY PLATE AGAINST SAID MEMBER AND TO PREVENT OUTWARD MOVEMENT OF THE CAVITY PLATE.