Platen mounting of die set leader pins and bushings

Claim 1

A DIE SET COMPRISING THE COMBINATION OF RELATIVELY MOVABLE METAL PLATENS RESPECTIVELY PROVIDED WITH METAL LEADER PIN AND BUSHING PARTS, ONE OF SAID PLATENS BEING PROVIDED WITH A SOCKET OF FRUSTO-CONICAL FORM TAPERED TO PROVIDE PROGRESSIVE REDUCTION IN CROSS SECTION IN A DIRECTION AWAY FROM THE OTHER SUCH PLATEN, ONE OF SAID PARTS BEING PROVIDED WITH A PLUG OF FIXED FRUSTO-CONICALLY TAPERED FORM AND COMPLEMENTARY TO THE SAID SOCKET AND RELEASABLY SEATED THEREIN, AND MEANS FOR NORMALLY MAINTAINING THE TAPERED PLUG OF SAID ONE PART SEPARABLY SEATED IN THE SOCKET OF SAID ONE PLATEN, THE METAL OF THE TAPERED PLUG OF SAID ONE PART BEING MATERIALLY HARDER THAN THE METAL OF THE PLATEN PROVIDED WITH SAID SOCKET AND THE TAPER OF THE SOCKET AND THE TAPERED PLUG OF SAID ONE PART BEING IN A RANGE OF FROM THREE AND ONE-HALF TO TEN DEGREES FROM THE AXIS OF THE SOCKET, WHEREBY SAID ONE PART WILL WITHDRAW ITS TAPERED PLUG FROM THE SOCKET SLIGHTLY WHEN SUBJECTED TO LATERAL DEFLECTING PRESSURE AND WILL RESUME ITS POSITION PROVIDED SUCH WITHDRAWAL DOES NOT EXCEED THE ELASTIC LIMIT OF SAID RETAINING MEANS, SAID RETAINING MEANS HAVING SUFFICIENT ELASTICITY TO ACCOMMODATE THE SAID SLIGHT WITHDRAWAL.