Injection molding device

Claim 1

A CASTING, COMPRISING, IN COMBINATION: FIRST AND SECOND HALVES MOVABLE RELATIVELY TOWARD AND AWAY FROM EACH OTHER FOR OPENING AND CLOSING THE MOLD AND HAVING COOPERATING MOLD SURFACES WHICH TOGETHER DEFINE TWO SPACED MOLD CHAMBERS ONE FOR FORMING A SEMI-FINISHED MOLDED ARTICLE AND THE OTHER FOR FORMING A FINISHED MOLDED ARTICLE, A PORTION OF ONE OF THE MOLD HALVES HAVING MOLD SURFACES THEREON BEING ROTATABLE; ONE OF SAID MOLD HALVES INCLUDING FIRST AND SECOND SECTIONS SLIGTLY DISPLACEABLE WITH RESPECT TO EACH OTHER IN THE OPENING AND CLOSING DIRECTION OF THE MOLD; SAID FIRST SECTION INCLUDING A PLURALITY OF MOLD-SURFACE DEFINING ELEMENTS MOVABLE AT RIGHT ANGLES TO THE OPENING AND CLOSING DIRECTION OF THE MOLD AND ARRANGED TO DEFINE IN PART THE MOLD CHAMBER FOR FORMING A SEMI-FINISHED MOLDED ARTICLE AND HAVING INNER AND OUTER ABUTMENT SURFACES, SAID MOLD ELEMENTS BEING ARRANGED IN THE FORM OF A CLOSED GEOMETRIC FIGURE AND DEFINING MOLD SURFACES WHICH ARE CONCAVE AND ARE PROVIDED WITH AT LEAST A PORTION OF A SYMBOL; AND SAID SECOND SECTION INCLUDING A PLURALITY OF ELEMENTS HAVING INNER AND OUTER ABUTMENT SURFACES INCLINED TOWARD THE MOLD COLSING DIRECTION AND ENGAGING THE ABUTMENT SURFACES OF SAID MOLD SURFACE DEFINING ELEMENTS FOR MOVING THE MOLD SURFACE DEFINING ELEMENTS INWARDLY WHEN SAID FIRST AND SECOND SECTIONS MOVE TOWARD EACH OTHER AND OUTWARDLY WHEN SAID FIRST AND SECOND SECTIONS MOVE AWAY FROM EACH OTHER.