Apparatus for the production of hollow plastic articles

Claim 1

AN APPARATUS FOR TRANSFORMING PLASTIC BLANKS INTO BOTTLES AND SIMILAR HOLLOW ARTICLES, COMPRISING AN OPEN AND SHUT MOLD HAVING TWO SECTIONS EACH COMPRISING A CARRIER AND A SEPARATING ELEMENT, SAID CARRIERS BEING MOVABLE WITH THE RESPECTIVE SEPARATING ELEMENTS TOWARD AND AWAY FROM EACH OTHER AND EACH SEPARATING ELEMENT BEING MOVABLE WITH REFERENCE TO THE RESPECTIVE CARRIER BETWEEN A SEPARATING AND A RETRACTED POSITION, SAID SECTIONS TOGETHER DEFINING A BLANK-RECEIVING MOLD CAVITY AND HAVING COOPERATING PINCHING EDGES TO FORM IN THE BLANK WEBS WHICH CONNECT A FRESHLY FORMED ARTICLE WITH FINS CONSTITUTING SURPLUS MATERIAL OF THE BLANK, THE SEPARATING ELEMENTS OF SAID SECTIONS HAVING FIN-ENGAGING SURFACES PROVIDED WITH CHANNELS WHICH COMMUNICATE WITH SAID CAVITY WHEN THE MOLD IS SHUT AND THE SEPARATING ELEMENTS ARE MOVED TO RETRACTED POSITIONS; A BLOWING MANDREL ARRANGED TO EXTEND THROUGH SAID CHANNELS AND INTO SAID CAVITY SO AS TO EXPAND THE BLANK AGAINST SAID SECTIONS WHEREBY SURPLUS MATERIAL WHICH HAS PENETRATED BETWEEN SAID SURFACES PRODUCES FINS AND SAID EDGES FORM WEBS WHICH CONNECT THE FINS WITH THE THUS OBTAINED ARTICLE; AND ACTUATING MEANS FOR RECIPROCATING THE FIN-ENGAGING SURFACES OF SAID SEPARATING ELEMENTS WHEREBY THE SEPARATING ELEMENTS DESTROY THE WEBS AND THUS SEPARATE THE FINS FROM THE ARTICLE ON MOVEMENT FROM SAID RETRACTED POSITIONS.

Claim 2

AN APPARATUS FOR TRANSFORMING PLASTIC BLANKS INTO BOTTLES AND SIMILAR HOLLOW ARTICLES, COMPRISING AN OPEN AND SHUT MOLD HAVING TWO SECTIONS EACH COMPRISING A CARRIER AND A SEPARATING ELEMENT, SAID CARRIERS BEING MOVABLE WITH THE RESPECTIVE SEPARATING ELEMENTS TOWARD AND AWAY FROM EACH OTHER AND EACH SEPARATING ELEMENT BEING MOVABLE WITH REFERENCE TO THE RESPECTIVE CARRIER BETWEEN A SEPARATING AND A RETRACTED POSITION, SAID SECTIONS TOGETHER DEFINING A BLANK-RECEIVING MOLD CAVITY AND HAVING COOPERATING PINCHING EDGES TO FORM IN THE BLANK WEBS WHICH CONNECT A FRESHLY FORMED ARTICLE WITH FINS CONSTITUTING SURPLUS MATERIAL OF THE BLANK, THE SEPARATING ELEMENTS OF SAID SECTIONS HAVING FIN-ENGAGING SURFACES PROVIDED WITH CHANNELS WHICH COMMUNICATE WITH SAID CAVITY WHEN THE MOLD IS SHUT AND THE SEPARATING ELEMENTS ARE MOVED TO RETRACTED POSITIONS; A BLOWING MANDREL ARRANGED TO EXTEND THROUGH SAID CHANNELS AND INTO SAID CAVITY SO AS TO EXPAND THE BLANK AGAINST SAID SECTIONS WHEREBY SURPLUS MATERIAL WHICH HAS PENETRATED BETWEEN SAID SURFACES PRODUCES FINS AND SAID EDGES FORM WEBS WHICH CONNECT THE FINS WITH THE THUS OBTAINED ARTICLE; AND ACTUATING MEANS FOR RECIPROCATING THE FIN-ENGAGING SURFACES OF SAID SEPARATING ELEMENTS WHEREBY THE SEPARATING ELEMENTS DESTROY THE WEBS AND THUS SEPARATE THE FINS FROM THE ARTICLE ON MOVEMENT FROM SAID RETRACTED POSITIONS.