Abstract: A closure having interrupted threads, wherein the interruptions between thread segments are vertically aligned with and are at least as long as thread segments in the overlapping portions of the turns of the thread. This permits manufacture of the closure by stripping of the closure threads from a mold to obtain a higher rate of production while minimizing the pulled-thread defects previously encountered with this production method. In addition, the invention is also utilized to provide an improved closure and package in which two hand operations by the user are required to remove the closure from a neck, thereby permitting internal pressure to be released through interrupted threads before the closure and neck threads are completely disengaged.

Abstract: The present disclosure is directed to an improved method and apparatus for making glass containers. A gob of molten glass is introduced into a parison forming device at the parison forming position. A glass parison is formed, cooled and transferred to an intermediate position where it is allowed to reheat and mechanically stretched to a desired length, while at temperatures between 1200.degree. F. and 2000.degree. F. The elongated parison is transferred to the blow mold position, expanded and cooled to form a glass container.

Abstract: A method and apparatus for manufacturing glass bottles and more specifically an apparatus and a method for forming parisons is disclosed. At least one blank mold defines a mold cavity having an opening at its upper end for receiving a premeasured gob of molten glass from a loading cavity member. A plunger having a volume of at least 15% of the volume of the mold cavity is completely extended into the mold cavity prior to the reception of the molten glass. The molten glass is moved downwardly from said loading cavity member into the mold cavity. Fluid force presses the molten glass against the walls of the mold cavity and against the extended plunger. The opening in the mold is closed by a baffle and the plunger retracted. Compressed air is applied through the neck of the parison to expand the parison outwardly against the mold cavity and a mold surface defined by the baffle means. The parison is then separated for further processing in the bottle making operation.

Abstract: A method of forming parisons in machines for making glass bottles which includes introducing a gob of molten glass into a blank mold, moving a cavity plunger to form a parison cavity and subsequently subjecting the gob to a predetermined pressure separate from the cavity plunger to apply pressure urging the molten glass into conformity with the mold.

Abstract: A method for manufacturing glass bottles is disclosed which includes consecutively delivering gobs of molten glass into a blank mold, forming each gob into a parison, transferring the parisons alternately into at least two sets of blow molds, allowing said parisons to reheat, and expanding the parisons in the blow molds. The sets of blow molds reciprocate along a substantially vertical path. A first position where the parisons are alternately received by the blow molds and blown containers removed is located on the vertical path. The parisons are expanded and cooled in the blow molds by blowing them out or by applying a vacuum, or a combination of those means at a second position on the vertical path.

Abstract: A method of forming glass bottles from a short parison is disclosed, which method includes the steps of mechanically elongating the parison in a blow mold to an extent that the exterior bottom of the elongated parison is near, but not at, the bottom of the blow mold cavity and subsequently expanding the elongated parison by vacuum on its exterior and/or by air pressure on its interior, and finally removing the blown bottle from the blow mold.

Abstract: An apparatus for manufacturing glass bottles is disclosed which includes consecutively delivering gobs of molten glass into a blank mold, forming each gob into a parison, transferring the parisons alternately into at least two sets of blow molds, allowing said parisons to reheat, and expanding the parisons in the blow molds. The sets of blow molds recipricate along a substantially vertical path. A first position where the parisons are alternately received by the blow molds and blown containers removed is located on the vertical path. The parisons are expanded and cooled in the blow molds by blowing them out or by applying a vacuum, or a combination of those means at a second position on the vertical path. The apparatus is an improvement to forming sections of the well known Hartford type I.S. machine.

Abstract: A child-proof container and cap combination is disclosed which seals the contents of the container against moisture vapor deterioration by making a seal which is "tight" by industry standards. The cap requires less than seven inch pounds of torque for removal. The seal is obtained by the cooperation of a flexible sealing lip on a separate element supported or disposed on the interior surface of the cap and cooperating with a rigid tapered sealing surface on the container.

Abstract: A container-closure combination is disclosed which meets current industry standards for tightness promulgated by the United States Pharmacopoeia XIX and The National Formulary XIV with an application torque of seven inch pounds or less.

Abstract: A two-piece "push and turn" child resistant closure is disclosed in which an inner cap member has a threaded connection with a vial or bottle which is capable of making a good sealing connection to protect the contents of the container against deterioration. The outer member has a series of protuberances, or a preferably square configuration which greatly improves the utility of the closure for persons having arthritis or other ailments which make it difficult to turn a round closure. Leaf spring operating spring elements are housed in the corners of the protuberances of the outer member.

Abstract: An improved method is disclosed for forming glass bottles by the blow and blow process. A parison mold having a one-piece annular blank mold section and split neck and shoulder mold sections is charged fully with molten glass. Air is subsequently blown through a manifold covering the upper end of the parison mold to force the molten glass into an annular space defined by a cavity in the neck mold section and a neck pin projected into the neck mold cavity. The neck pin is then reciprocated from the neck mold cavity, and air is blown through the molded neck to cause the molten glass to chill its surface by pressure contact with the inside of an upright truncated pyramidal-shaped cavity formed in the blank mold section. The glass which comes into contact with the cavity walls in the blank mold section develops a very uniform enamel due to the uniform cooling achieved with the solid annular blank mold section.

Abstract: A pressure relieving bottle closure is disclosed. The closure is of thin metal construction having an internal sealing disc and adapted to be received by a preferably screw threaded bottle neck to form top and side seals with finish surfaces of the bottle. The sealing material comprises a resilient liner within the closure. In the area of the side skirt of the metal portion of the closure which forms the area disposed over the side seal is at least one opening. If excessive pressure develops inside the bottle, pressurized fluid first escapes through the top seal of the bottle and, upon reaching the area of the side seal over which the said opening is located, pushes the sealing liner outwardly into the opening to escape through the side seal to the exterior of the bottle. The closure again seals when the excess pressure has been relieved, provided that the sealing material used possesses sufficient resiliency.

Abstract: A fluidless bottle testing method and apparatus are disclosed. After being subjected to a squeeze test for side wall strength, bottles are moved to a bottle bottom tester which places the outer surfaces of the bottom and of the lower side wall of the bottle into tension. Bottles which would fail in service due to thin or weak walls, checks and scratches fail during the test and are thus removed prior to filling. Preferably the apparatus for performing the bottom test supports the bottle at a large bead on the neck or annularly at the lower portion of the side wall. A test rod is lowered (or the bottle is raised) into the mouth of the bottle and ultimately against the central bottom of the bottle, creating a flexure stress in the bottle bottom. The test facilitates rapid 100% bottle testing without the application of pneumatic or hydrostatic pressure to the interior of the bottle.