Abstract: A mould mechanism for a glass forming machine comprises two mould supports which have first end portions which are mounted on parallel shafts for linear movement between mould open and mould closed positions. The mould supports are moved by mould operating mechanisms which each comprise a hydraulically operated piston and cylinder device providing one of the shafts. A clamping mechanism is provided to latch the mould supports together when in mould closed position.

Abstract: A gob severing mechanism comprises a single blade which severs a series of gobs by passing rapidly through columns of glass, severing a first series on movement in one direction and a second series on movement in the other direction. In rest positions on opposite sides of the glass columns wherein the blade is positioned in shrouds in which it is cooled by a mist of coolant, e.g. water.

Abstract: The mechanism comprises a piston and cylinder assembly operable to move mould side portion supports between mould open and mould closed positions thereof. A check valve (72, 74, 76, 78, 80, 82) is mounted in a passage (66) into the cylinder to allow fluid under pressure to enter the cylinder through the passage but to prevent exit of fluid through the passage. The check valve is mounted in a chamber (66f) defined partially by the end cap (60) and partially by a cover member (67) removably mounted on the top of the end cap (60). When the cover member (67) is removed from the end cap (60), the check valve can be removed.

Abstract: In an apparatus for manufacturing containers out of glass, a parison is formed from a gob of molten glass and is transferred to a mould having a cavity in the shape of the required container. Instead of the conventional blowing operation, the parison within the mould is heated so that the parison flows to conform to the shape of the cavity. The heating may be by a gas burner and air may be blown on to a neck portion of the parison to cool it during heating of the parison.

Abstract: A glassware forming machine (10) of the individual section type has its sections (12) arranged along an arc of a circle. Apparatus incorporating such a machine has the sections arranged along an arc centered on a point below the median position (39) of the or all the orifices of a feeder of the apparatus which supplied gobs of molten glass to the machine (10).

Abstract: A support for an operating mechanism such as a takeout mechanism (10) of a glassware forming machine comprises a slideway (34) extending vertically above an operating position of the mechanism at a blow station of the machine, a carriage (40) mounted for vertical adjustment on the slideway, a seat (50) for the mechanism operating mechanism, and clamping means (62, 64, 70) operable to hold the operating mechanism in the seat. The seat (50) is in vertical alignment with the operating position.

Abstract: The relatively movable mould side portions (22, 26) of a glass moulding apparatus are held together during moulding by clamping means (40,42). The clamping means (40,42) comprises first (40) and second (42) pressing means each movable upwardly into an operative position thereof and downwardly into an out-of-the-way position thereof. In their operative positions, each pressing means (40,42) is operative to press one of the mould portions (22,26) towards a mould portion (22,26) which mates therewith. In their out-of-the-way positions, each pressing means (40,42) is clear of the path of movement taken by the mould portions (22,26) in opening and closing the mould.

Abstract: A moving mechanism for moving a baffle (16), funnel or blowhead. A support (14) for the member is pivotally mounted on a first horizontal axis (20) on an arm (18) which is mounted to turn about a second horizonal axis (22) to move the member between operative and out-of-the-way positions. Driving means (24) is operable to turn the arm about the second horizontal axis and orientation means (42) maintains the member in a constant orientation during movement of the arm.

Abstract: A moving mechanism for moving a baffle (16), funnel or blowhead. A support (14) for the member is pivotally mounted on a first horizontal axis (20) on an arm (18) which is mounted to turn about a second horizontal axis (22) to move the member between operative and out-of-the-way positions. Driving means (24) is operable to turn the arm about the second horizontal axis and orientation means (42) maintains the member in a constant orientation during movement of the arm.

Abstract: The blowhead arrangement comprises a blowhead (18) and a support (10,12,16) therefor. The support defines a passage (50,52,54,56,58,60) through which a first supply of air under pressure can be supplied to the blowhead (18) and a passage (70,74) through which a second supply of air under pressure can be supplied to the blowhead. The first of the supplies of air is used to blow a glass parison in a mould cavity to the shape of the cavity when the blowhead (18) is in position on the glass parison. The second supply is used to cool the finish of the parison by impinging on the finish from openings (90) in the blowhead.

Abstract: A plunger mechanism for use in forming a gob of molten glass into a parison comprises a cylinder (30), a piston (32) movable in the cylinder upon the introduction of hydraulic fluid, a piston rod (34), means (40) for mounting a plunger on the piston rod, a servo-mechanism (58) to control the flow of fluid, a position or velocity feedback device (60), and control means (70) responsive to the feedback device operable to control the servo-mechanism so that the plunger moves with a predetermined position against time curve.

Abstract: Mould portions supporting arms of a mould arrangement are moved by drive means between mould-open and mould-closed conditions. The drive means comprises two vertical drive shafts (20) connected to the supporting arms and arranged to move the arms when turned in opposite directions by motor means (40). The motor means (40) is connected to the drive shafts (20) by connecting means comprising a driving pulley (70) driven by the motor and two driven pulleys (72 and 74) mounted on the shafts (20). The pulleys are interconnected by belts (76,78,80 and 82) whose ends are attached to the pulleys. During motion in each direction, two of the belts move the driven pulleys and hence turn the shafts (20) while the other two belts act to maintain tension in the first-mentioned belts.

Abstract: The moving means is for use in moving an operative member between an out-of-the-way position and an operative position by a movement having a linear component in a vertical direction and a rotary component about a vertical axis. A first shaft on which the operative member is mounted is movable vertically by a first piston and cylinder assembly and is in driving connection with a second shaft relative to which it can move vertically. A second piston and cylinder assembly is operable through a screw-threaded connection to cause its piston to rotate thereby rotating the second shaft and hence the first shaft about the vertical axis.

Abstract: The mechanism comprises two mould support arrangements (14; 114) each comprising a supporting arm (16; 116) pivotal about a first fixed axis (18; 118), a support (22; 122) for mould portions pivotal on the arm about a second vertical axis (24; 124), and a link (36; 136) pivotal about a third fixed vertical axis (28; 128) and on the support about a fourth fixed vertical axis (38; 138). The first axes (18; 118) of the support arrangements are spaced from one another and the first, second, third and fourth axes of each arrangement are arranged at the corners of a parallelogram to retain the relative orientations of mould portions as the arms (16; 116) pivot about the first axes (18; 118).

Abstract: The gob distributor is for a glassware manufacturing machine of the individual section type. A gob-delivering scoop (30) is turned about a vertical axis to align it with gob-delivering guides (51 to 58) so that gobs of molten glass can be delivered to the sections of the machine in a predetermined sequence. The scoop (30) is turned by a fluid pressure-operated motor (80,82). The motor is controlled by a servo-system (100) which operates a valve (90) which controls the supply of fluid under pressure to the fluid pressure-operated motor.

Abstract: Parison transferring means for transferring glass parisons from a mould of a glassware manufacturing machine. A shaft (20) which carries supports (38) for neck rings which can grip or release a parison is turnable back and forth about a horizontal axis (22) to move the neck rings between gripping and releasing positions. The end positions of the arcuate movement about the axis (22) are determined by adjustable stops (70 and 100) which engage projections (42 and 102) of the shaft (20) or of the supports (38).

Abstract: Containers are removed from a mould by a take-out mechanism which comprises a container centring member which is mounted for movement between a lower, operative, position thereof, in which the member can project into a neck opening of a container before the container is gripped by gripper members of the take-out mechanism, and a upper, out-of-the-way position. In its operative position, the centring member prevents displacement of tilting of a container into which it projects.

Abstract: A glassware forming machine of the individual section type has a parison catching device movable between an intercepting position, in which it is in the path of a glass parison being transferred between mould arrangements of the machine and, in the event of a machine break-down, can direct the parison to a cullet chute, and an out-of-the-way position of the device is above the intercepting position thereof and moving means for the device is arranged, in the event of a power failure, to move the device into its intercepting position.

Abstract: The section comprises a supporting frame which supports a mould arrangement. Drive means is associated with the mould arrangement and is operable to open and close a mould of the mould arrangement. The drive means comprises two vertically-extending drive shafts mounted for turning movement about respective vertical axes to move mould portions. The drive means also comprises at least one rotary hydraulic motor operable to turn the drive shafts. The motor or motors are mounted on the underside of a removable portion of a table of the supporting frame so that the motor or motors and the removable portions can be removed from the section as a unit.

Abstract: The apparatus comprises two horizontally extending blades (22, 24) mounted for turning movement about a common vertical axis (26). The blades each have a hole (28; 30) therein so arranged that, when the blades are in a first condition, the holes are aligned and a vertical column of plastic material (12) can pass through the holes. Upon the blades being turned about the common vertical axis through a predetermined angle, one clockwise and the other anti-clockwise, edges of the holes (28; 30) pass each other until the holes do not overlap and the column of plastic material passing through the holes is sheared through by edges of the holes.