Demountable retainer for punch and die sets

Claim 1

A DEMOUNTABLE RETAINER FOR SUPPORTING AN ELEMENT OF A PUNCH AND DIE SET RELATIVE TO A MOUNTING PLATE ASSEMBLY WHICH IS ADAPTED TO BE MOUNTED IN A PUNCH PRESS, SAID MOUNTING PLATE ASSEMBLY INCLUDING A MOUNTING PLATE AND A PLURALITY OF DOWEL PINS PROJECTING OUTWARDLY THEREFROM, SAID RETAINER COMPRISING, A RETAINER BLOCK ASSEMBLY ADAPTED TO SUPPORT THE ELEMENT OF THE PUNCH AND DIE SETS, SAID RETAINER BLOCK ASSEMBLY HAVING A PLURALITY OF BORE HOLES ADAPTED TO ESTABLISH A FRICTION FIT WITH THE DOWEL PINS OF THE MOUNTING PLATE, THEREBY TO LOCATE THE RETAINER BLOCK ASSEMBLY IN A FIXED POSITION RELATIVE TO THE PLANE OF THE MOUNTING PLATE ASSEMBLY, A PLURALITY OF JACK SCREWS EXTENDING INTO SAID RETAINER BLOCK ASSEMBLY IN THREADED ENGAGEMENT RELATIVE TO THE RETAINER BLOCK ASSEMBLY, SAID JACK SCREWS RESIDING ALONG AXES GENERALLY PERPENDICULAR TO THE PLANE OF THE MOUNTING PLATE, SAID JACK SCREWS HAVING OUTER ENDS PRESENTED FOR TOOL ENGAGEMENT AT THE EXPOSED FACE OF THE RETAINER BLOCK ASSEMBLY, SAID JACK SCREWS HAVING INNER ENDS ADAPTED TO ENGAGE THE MOUNTING PLATE ASSEMBLY, SAID JACK SCREWS ADAPTED TO BE SCREWED INWARDLY RELATIVE TO THE RETAINER BLOCK ASSEMBLY AND THEREBY ADAPTED TO FORCE THE RETAINER BLOCK ASSEMBLY OUTWARDLY RELATIVE TO THE DOWEL PINS FOR DISLODGMENT OF THE RETAINER BLOCK ASSEMBLY FROM THE DOWEL PINS OF THE MOUNTING PLATE ASSEMBLY, SAID JACK SCREWS BEING SPACED APART FROM ONE ANOTHER AND POSITIONED IN OPERATIVE RELATIONSHIP TO THE DOWEL PINS, SAID JACK SCREWS ADAPTED TO MAINTAIN THE RETAINER BLOCK ASSEMBLY SUBSTANTIALLY IN PARALLELISM WITH THE MOUNTING PLATE, THEREBY TO ELIMINATE BINDING ANGULAR FORCES BETWEEN THE DOWEL PINS AND RETAINER BLOCK ASSEMBLY DURING WITHDRAWAL THEREOF FROM THE DOWEL PINS.