Abstract: A blow head mounting arrangement for use to facilitate installation and removal of a blow head from a blow head mounting member. The blow head has a first engagement member for removable engagement with a second engagement member to removably attach the blow head to the blow head mounting member. Once engaged, the blow head is retained on the blow head mounting member by rotating the blow head into a locked position in which it is retained until it is rotated in the opposite direction by a locking mechanism.

Abstract: A method and apparatus are provided for producing a tube of glass by zonewise heating and softening of a hollow cylinder by a movable heating zone while rotating about its rotation axis. The glass tube is continuously formed by radial expansion of the softened region under action of centrifugal force and/or internal overpressure applied in the hollow-cylinder bore. The method and apparatus make it possible to deform the hollow cylinder in a single or a small number of forming steps into a glass tube having a larger outer diameter and high dimensional accuracy by determining a circumferential position at which the wall thickness is comparatively small, and during heating and softening of the rotating hollow cylinder a coolant is dispensed from a coolant source onto the deformation zone only when or predominantly when the circumferential position having the comparatively small wall thickness passes the coolant source.

Abstract: A glass container that includes a microwave susceptor coating on an exterior surface thereof, and a process for healing flaws in an exterior portion of the glass container. When the glass container is exposed to microwave radiation, the microwave susceptor coating generates heat and selectively and locally provides a major portion of such heat to regions of glass in the exterior portion of the glass container that are in close proximity to the flaws. These regions of glass in the exterior portion of the glass container may be selectively and locally heated so that the glass therein can flow and thereby fill-in the flaws in the exterior portion of the glass container. This process can be used to heal flaws in an exterior portion of a glass container without impairing the structural integrity of the glass container.

Abstract: A blank mold for an I. S. Machine is made up of a pair of opposed engaged blanks. When closed, these blanks have a top surface with an opening. The blanks have an inner surface defining the side wall of a parison which extends upwardly to a position a defined distance below the top surface of the blanks and a continuous, beveled surface connecting the top of the inner surface defining the side wall of the parison and the top opening of the blanks. A pair of funnels, each having a continuous beveled surface extending from a circular horizontally disposed top opening downwardly to smaller centrally located bottom opening, are interfit with the top of the blanks with the top opening of the blanks and the bottom opening of the funnel being coextensive.

Abstract: An indexed unidirectional rotary inverting apparatus (UIA) for a glassware forming machine of single or multiple-cavity mounted on an apparatus support frame.

Abstract: An invert mechanism for a glassware forming machine includes a support frame having a base adapted removably to be mounted on a forming machine frame. A linear actuator is suspended from the support frame and a linear gear rack extends from the actuator within the support frame. A hollow shaft has a central portion carried for rotation on the support frame and oppositely extending end portions with axial external splines and open ends. A gear is coupled to the central portion of the shaft for co-rotation with the shaft and has external teeth coupled to the gear rack. A pair of ball nuts are disposed on the end portions of the hollow shaft, and a pair of hollow pneumatic pistons are respectively disposed on the ball nuts over the open ends of the shaft. Invert arm mounts are respectively disposed on the pistons, and a spring is disposed within each piston operatively extending between the piston and the shaft to bias the pistons to a position adjacent to the support frame.

Abstract: A method and a machine for the production of hollow glassware articles, by the blow-and-blow, press-and-blow, press-and-blow paste mold and direct-press processes in a glassware forming machine including single or multiple machine sections each having single or multiple-cavity, comprising: forming a parison in an inverted orientation, into a blank mold and a first transferable and open-able neck ring mold held by an inverting apparatus having a first and a second diametrically opposed arms, each arm holding a transferable and open-able neck ring mold; inverting the parison held by the first transferable and open-able neck ring mold, by rotating the first arm 180° to an upright orientation at an intermediate station, while the second arm with a second transferable and open-able neck ring mold is simultaneously placed at the parison forming station; transferring the first transferable and open-able neck ring mold holding the parison in an upright orientation, from the intermediate station, to a blow mold st

Abstract: An invert mechanism (1) is disposed above a cover plate (84) of a frame (85) of a glass forming machine (2). An electric servomotor (86) is disposed with its horizontal longitudinal axis above the cover plate (84). A driven shaft of the electric servomotor (86) is connected to a horizontal invert shaft (3) by means of a transmission (35). Between the driven shaft of the electric servomotor (86) and the transmission (35) a planetary gear (87) is connected.

Abstract: A parison chute assembly for an I.S. machine. The assembly has a chute which is rotatably supported at one end and is displaceable from an out of the way position above the horizontal down to a vertical position for receiving gobs.

Abstract: A neck ring arm assembly for a glass container forming machine of the individual section type comprising a horizontally extending invert shaft and a vertically extending cylinder with a rack that engages a spur gear attached to the invert shaft to oscillate the invert shaft. In a first embodiment, the invert shaft has an inner annular sleeve keyed to it, and the inner annular sleeve has a polygonal exterior, preferably a hexagonal exterior. First and second outer annular sleeves surround the inner annular sleeve to be oscillatable therewith, but reciprocable with respect thereto.

Abstract: A neck ring arm assembly for a glass container forming machine of the individual section type comprising a horizontally extending invert shaft and a vertically extending cylinder with a rack that engages a spur gear attached to the invert shaft to oscillate the invert shaft. The invert shaft has an inner annular sleeve keyed to it, and the inner annular sleeve has a polygonal exterior, preferably a hexagonal exterior. First and second outer annular sleeves surround the inner annular sleeve to be oscillatable therewith, but reciprocable with respect thereto. Each of the first and second outer annular sleeves has a polygonal interior which is complementary to the polygonal exterior of the inner annular sleeve, and each is provided with a plurality of replaceable wear pads each of which is adjustable toward a surface of the polygonal exterior of the inner annular sleeve to provide for close, low backlash engagement of the inner annular sleeve by the outer annular sleeves over a prolonged duration.

Abstract: An invert cylinder mechanism for a glass container forming machine of the I.S. type, the invert cylinder mechanism having a piston that is moveable along a rectilinear path between inner and outer positions within an annular housing to cause a cylinder rod attached to the piston to extend from said annular housing and to then retract back into said annular housing. A shock absorber is positioned within a recess of the annular housing with its longitudinal central axis spaced from and extending parallel to the longitudinal central axis of the rod. The shock absorber is engaged by the piston as the piston reaches its outer position to absorb inertial loads as the piston decelerates to a stop at its outer position. The recess has an opening out of alignment with the longitudinal central axis of the installed shock absorber, and the shock absorber is removable through the opening along its longitudinal central axis after first pivoting the shock absorber with respect to the longitudinal central axis of the rod.

Abstract: An I.S. machine comprises a plurality of individual sections arranged in side by side relation. Each section has a section frame having a top wall having a front and a back and opposed sides on which is mounted a blank station including a mold opening and closing mechanism for forming a parison from a gob of molten glass, a blow station including a mold opening and closing mechanism for forming a parison into a bottle, and an invert and neck ring holder mechanism supported which is located between the mold opening and closing mechanisms for transferring a parison therebetween. The machine also has a baffle mechanism includinga blowhead carrier, a motor having an output, a transmission for transmitting the output of the motor to the blowhead carrier to displace the carrier, a housing for housing the transmission. The housing is secured on the top wall proximate the front thereof.

Abstract: An invert/neckring mechanism for an individual section (I.S.) glass forming machine including a rectangular shaft and a pair of neckring arm holders having a central passage which mates with the rectangular cross-sectional shaft to limit the movement between the shaft and the arm holders to axial movement all rotated through the invert arc by a hydraulic actuator in juxtaposition therewith. A plurality of springs bias the arm holders together to a closed position and a hydraulic double piston cylinder assembly is mounted adjacent to the shaft between the arm holders to open and close the arm holders.

Abstract: A neck ring mechanism for transferring a blank or parison from a blank mold section to a blow mold section of an I.S. glass forming machine includes a rock shaft and a pair of spaced cylinders reciprocable in opposition directions on the shaft. The rock shaft is provided with a plurality of longitudinal grooves, and a like plurality of followers are arranged in the grooves so as to contact at least one side wall of each groove. The followers are supported on each cylinder. One or more piston rings are seated in associated annular grooves in the rock shaft so as to preclude air leakage.

Abstract: A method and apparatus for producing glass bottles, is characterized by the forming of an air curtain to cover a plunger of the apparatus so as to prevent foreign matter from adhering to the plunger, a phenomenon which is the cause of decreasing the impact strength of glass bottles and which, therefore, makes it difficult to produce thin-walled glass bottles.

Abstract: An apparatus comprising a parison forming assembly and a final shaping assembly each having a mold, and a reheating and intermediate forming assembly provided between the two assemblies and having a cover or an intermediate forming mold for enclosing the parison in a confined space, the assemblies being associated with one another for sequential operation. Without prolonging the molding cycle time usually needed for the parison forming assembly and the final shaping assembly, unfinished parisons can be reheated sufficiently.

Abstract: A rotatable neck ring assembly for use primarily in an automatic blow molding machine includes an annular bushing and a concentrically arranged series of pivotally mounted foot members which in their closed position, cooperate with the bushing to grip the rim of a parison and hold it securely during the molding process. These pivoted foot members, which are spring biased to a closed position, are kept into firm engagement with the bushing by the upwardly moving parison mold. A first cam surface on the outer surface of the foot members cooperates with a corresponding surface on a concentrically surrounding sleeve to hold the foot members tightly against the bushing to grip the rim of the parison and hold it securely during the molding process. The cooperating cam surfaces on the foot members and the surrounding sleeve create a hoop tension in the bushing which must be overcome to pivot the foot members to open position at completion of the molding process.

Abstract: A glassware forming machine has a blank mold station at which two parisons are formed in mating blank molds and neck molds, the parisons being formed inverted by upwardly moving plungers entering the lower open ends of the parison cavities. A twin plunger mechanism especially suitable for double gob pressing of parisons has the capability for ready removal and replacement of the plunger mechanism for producing glassware on different mold centers. A floating bottom plate is provided on a vertically adjustable foot structure, and the twin plunger mechanism includes upper and lower housing portions readily secured to the bottom plate by locating studs which position the plunger mechanism in the glassware forming machine frame and in accurately indexed relationship to the centerline of the parison cavities at the blank mold station.

Abstract: Apparatus for forming glass containers by the blow and blow process in which a parison mold having a plurality of cavities is centrally positioned relative to a pair of blow molds having a plurality of cavities. The parisons are formed with their necks down in the parison mold from a charge of glass delivered to each cavity. Vacuum is applied to the neck area of the mold to form the finish portion of the container. A neck pin is pulled and air under pressure is fed to the interior of the area from which the neck pin is drawn to expand the glass within the parison mold at a continuous rate until the glass within the parison mold comes in contact with a baffle which closes the upper end of the parison mold. The parison mold is then opened and the parisons are transferred alternately from the parison mold to the blow molds where they are expanded into final shape.

Abstract: The neck ring arms of a Hartford I. S. type glassware forming machine section are adapted to be oscillated between a blank and a blow station, and also to move toward and away from one another in order to cooperate with one another and with a blank mold at the blank side of the machine, and to release a partially formed parison at the blow side of such a machine. In a triple gob configuration, where three such neck ring molds are provided, cartridges are disclosed for conveniently mounting the six neck ring mold segments for quick assembly with the associated neck ring arms. The cartridges can be quickly removed with a minimum downtime to the machine section, and the neck ring mold segments bench-assembled in the cartridge at the leisure of the machine operator.