Apparatus for forming articles

Claim 1

A DIE APPARATUS FOR FORMING CUP-SHAPED ARTICLES COMPRISING A STATIONARY DIE ASSEMBLY AND MOVABLE DIE ASSEMBLY RECIPROCABLE TOWARD AND AWAY FROM SAID STATIONARY DIE ASSEMBLY; SAID STATIONARY DIE ASSEMBLY INCLUDING A REVERSIBLE TRIMMING RING HAVING IDENTICAL UPPER AND LOWER ARTICLE LIP-FORMING SURFACES AND TRIMMING EDGES; A MANDREL MOUNTED UPON A SURFACE OF SAID TRIMMING RING; SAID MANDREL FURTHER COMPRISING AN ARTICLE WALL-FORMING PORTION LOCATED IN SPACED RELATIONSHIP TO SAID TRIMMING RING AND AN ARTICLE BOTTOM-FORMING SURFACE WHICH MERGES WITH SAID ARTICLE WALL-FORMING PORTION; MEANS MOVABLY SECURING SAID MANDREL AND SAID FORMING RING IN SAID STATIONARY DIE ASSEMBLY; A FIRST DRAW RING SURROUNDING SAID MANDREL; MEANS BIASING SAID FIRST DRAW RING TOWARD SAID MOVABLE DIE ASSEMBLY; A BLANK-CUTTING MEMBER HAVING A BLANK-CUTTING EDGE SURROUNDING SAID FIRST DRAW RING; SAID MOVABLE DIE ASSEMBLY INCLUDING A SLEEVE-LIKE MEMBER PROVIDED WITH ARTICLE WALL AND BOTTOM-FORMING MEANS WHICH ARE COOPERATIVELY ASSOCIATED WITH THE WALL AND BOTTOM-FORMING PORTIONS OF SAID MANDREL AND A SECOND DRAW RING MEMBER SURROUNDING SAID ARTICLE WALL AND BOTTOM-FORMING MEANS OF SAID SLEEVE-LIKE MEMBER AND ALIGNED WITH SAID FIRST DRAW RING MEMBER; SAID SECOND DRAW RING MEMBER HAVING AN OUTER BLANK-CUTTING EDGE ADAPTED TO COOPERATE WITH THE BLANK-CUTTING EDGE OF SAID BLANK-CUTTING MEMBER DURING THE INITIAL MOVEMENT OF SAID BLANK-CUTTING MEMBER DURING INNER TRIMMING EDGE; MEANS BIASING SAID WALL AND BOTTOMFORMING SAID TOWARD SAID STATIONARY DIE ASSEMBLY AND RELATIVE TO SAID SECOND DRAW RING; SAID WALL AND BOTTOMFORMING MEANS OF SAID SLEEVE-LIKE MEMBER BEING OF SUCH LENGTH THAT WHEN BIASED BY SAID BIASING MEANS THE LOWERMOST EDGE THEREOF WILL BE IN SUBSTANTIALLY THE SAME PLANE AS SAID INNER TRIMMING EDGE OF SAID SECOND DRAW RING WHEREBY UPON THE BOTTOMING OF SAID MOVABLE DIE ASSEMBLY WITH RESPECT TO SAID STATIONARY DIE ASSEMBLY THE SAID INNER TRIMMING EDGE OF SAID SECOND DRAW RING MEMBER WILL MOVE PAST THE LOWERMOST EDGE OF SAID SLEEVE-LIKE MEMBER AND A TRIMMING EDGE OF SAID REVERSIBLE TRIMMING RING SO AS TO TRIM THE LIP OF SAID CUP-SHAPED ARTICLE.