Method and apparatus for the production of bottles and similar hollow bodies from thermoplastic synthetic substances

Claim 1

THE METHOD OF PRODUCING CONTAINERS OR THE LIKE WITH FINISHED NECK DIMENSIONS FROM A TUBULAR PARISON OF WORKABLE MATERIAL EMPLOYING A MANDREL HAVING A PORTION WITH A REDUCED DIAMETER AND ANOTHER PORTION OF A LARGER DIAMETER, AND A PARTABLE BLOW-MOLD, INCLUDING THE STEPS OF: (A) POSITIONING THE TUBULAR PARISON WITHIN THE PARTED BLOW-MOLD, (B) URGING THE MANDREL AT LEAST PARTIALLY WITHIN SAID PARISON UNTIL THE REDUCED DIAMETER PORTION OF SAID MANDREL IS IN A POSITION BETWEEN THE AREAS OF SAID MOLD WHICH WILL FORM THE NECK OF THE CONTAINER, (C) EXPANDING SAID PARISON WITHIN THE MOLD AFTER THE MOLD IS CLOSED, (D) AND FINISHING THE INTERNAL DIMENSION OF THE PARISON IN THE AREA OF THE NECK OF THE CONTAINER BY URGING SAID MANDREL AT LEAST PARTIALLY OUT OF SAID PARISON WHEREBY A LARGER DIAMETER PORTION OF SAID MANDREL WILL BE BETWEEN THE AREAS OF THE MOLD WHICH WILL FORM THE NECK OF THE CONTAINER.