Abstract: A pair of generally vertically aligned press bending molds are slidably mounted relative to each other. An alignment pin extends into alignment holes in the upper and lower molds when the molds are vertically aligned. Adjusting screws positioned around the periphery of each mold, contact and bias each mold in a desired direction so as to precisely align the upper mold relative to the lower mold.

Abstract: A take-out tong head assembly for a glass blowing machine is mounted in a take-out mechanism for omni-directional adjustment of the tong head assembly in a plane perpendicular to the vertical axis of the blow molds for the purpose of eliminating checks in the blown articles formed in said glass blowing machine.

Abstract: The supporting means for a baffle used to close a mould of a glassware forming machine comprises an arm (12) mounted for vertical movement and for movement about a vertical axis. A support (14) is mounted on the arm and a baffle holder (28) is mounted on the support. The baffle holder is mounted on the support for limited vertical movement relative thereto against the action of resilient means (32) and also for limited movement in a horizontal plane.

Abstract: An optical glass forming apparatus for molding an optical element such as a lens by pressurizing optical glass, wherein a mold for molding one functional surface (optically functional surface) of the optical element is designed to be urged against the upper edge portion of a mold for forming the other functional surface of the optical element.

Abstract: A multi-part mold assembly molds glass lenses. A cylindrical sleeve between the top and bottom molds has three cut-outs forming three alignment pads on both ends of the sleeve. These pads are preferably equally spaced around the circumference of the sleeve to constrain the top and bottom molds against rotation about X and Y axes which are orthogonal to the direction of closing of the mold. The alignment pads set the closed vertical positions of the molds. A torus on the bottom mold contacts a tapered opening in a removable sleeve insert to position a glass preform which is held by the insert. A torus on the top mold and a torus on the bottom mold bear against a cylindrical inner surface of the sleeve to precisely align the molds in the X and Y directions.

Abstract: The invention relates to a method and apparatus for pressforming an article of a thermoplastic material. In accordance with the method a charge of molten material is deposited in a mould (14) and the central axis of a pressing plunger (18) and the mould (14) are aligned, after high a pressing operation is performed, the alignment being interrupted just before the end of the pressing operation. The apparatus comprises a frame (2), a mould (14) and a plunger (18), which plunger (18) is connected to a guide mechanism (22) which is movably connected to the frame (2) and which can be coupled rigidly to the mould (14) by coupling means (52).

Abstract: A machine for forming a hollow article of vitreous material has a neck mold having a neck ring with a pair of separable neck ring halves, a pair of holding elements each holding a respective one of the neck ring halves, a transporting element for transporting the neck molds along a predetermined path and having guiding bars, a driving element for moving each of the holding elements relative to the guide bars between closed and open end positions with locking of the same, and carriages displaceably mounted on the guide bars, wherein each of the holding elements for holding a respective one of the neck ring halves is releasably connected with one of the carriages.

Abstract: A glassware forming machine is shown which has a baffle support arm. The baffle support arm provides for four individual baffle holders which are grouped in adjacent pairs. The pairs of holders are interconnected by an equalizer arm and are biased into position by a leaf spring above and by a coil spring below. The equalizer arms are connected intermediate their lengths to a third larger equalizer bar which is pivoted for a rocking motion. The apparatus further comprises means for lifting and moving the baffle support arm and a latch means for changing the baffle holders.

Abstract: This application relates to parallel blank mold opening mechanism wherein the split blank molds, of which there are a plurality, are carried in holders that are mounted on horizontal hinge pins adjacent the rear thereof. These hinge pins are carried at the upper end of crank arms and move toward and away from each other during the cycle of operation of a pneumatic motor. Each of the mold holders is provided with a parallel link which is connected between the base of the mold mechanism housing and the holder, such that upon opening and closing of the mold the faces of the molds are maintained in a vertical plane. In addition, the position of the axes of the crank shafts and the hinge pins are such that the hinge pins move over top dead center or through the vertical plane defined by the axis of the crank shaft upon opening or closing. In this manner the molds are actually lifted a slight amount during movement from their closed to their open position.

Abstract: A method of and a device are provided for the high-precision manufacture of glass lenses where a roughly metered volume of softened glass is transferred in a product holder from a furnace to a position between two moulds, the moulds being subsequently moved towards one another and the excess glass being pressed from between the moulds. The moulds and the product holder are moved at such a mutual speed that both moulds simultaneously contact the article, and the movement of the moulds is terminated when they reach a given position with respect to one another.

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 multi-gob glassware forming machine has a blank station at which parisons are formed from gobs of molten glass in a plurality of blank moulds, an intermediate station at which the parisons are supported after having been transferred from the blank station, and a blow station at which the parisons are blown in blow moulds to the shape of the articles of glassware. The spacing of the supported parisons at the intermediate station is smaller than the spacing of the centers of the blow moulds at the blow station and the machine has transfer means which increase the spacing of the parisons during transfer of the latter from the intermediate station to the blow station.

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: A glassware forming machine has at least three individual side-by-side molds at both the blow and the blank side of the machine, which molds are upwardly open and adapted to be closed by a blowhead or baffle depending upon which side of the machine (blank or blow) that the molds are at, that is for either forming the final article at the blow side or the preliminary parison at the blank side. Three blowheads are disclosed for use at the blow side of a machine, and are retained in a carrier arm for limited vertical movement in order to accommodate variations in height of the tops of the individual molds. Two links extend laterally through slots in the blowhead retainers, and a bellcrank lever interconnects these links to the carrier itself so that upon closing contact made between one of the three blowheads and its associated mold, downward movement of the other two blowheads will occur thereby equalizing the closing forces between all three blowheads and their associated molds.

Abstract: Apparatus for manufacturing glass objects includes a pressing operation after a rough shaping operation in a blank mold comprising two separable chill-mold halves and tongs forming the base of the mold. Two spades move toward and away from the mold position without movement of the tongs.

Abstract: Each station has a push-off unit which transfers glass articles produced at such station onto a common outfeed conveyor. Each push-off unit comprises a cylinder-piston unit mounted for swinging movement on a vertical swing shaft, the piston thereof carrying a push-off arm. The push-off arm extends and engages the articles to be transferred, the cylinder swings towards the belt transferring the article, and the push-off arm retracts and the cylinder swings back. The push-off units of the plural stations are activated sequentially, in correspondence to the sequence in which glass gobs are fed into the respective machine stations. Plural electric motors are provided, one per station, and the swing motion of the push-off unit is generated by the respective electric motor. The rotation of each electric motor is controllable, by open- or closed-loop control, independently of the other electric motors. The operator selects the sequence in which the electric motors are to be activated.

Abstract: The invention relates to a mounting plate, by means of which the lower part of the compression mould in a press, in particular a glass press, can be fixed on a carrier plate. A mounting plate of this type has a coolant path defined by a cavity in the form of a spiral coolant channel which runs approximately parallel to the bottom and top faces of the mounting plate, from the central region thereof towards its periphery. In this way, more heat may be removed by the coolant from the central region of the compression mould than from its peripheral region which is in any case more strongly affected by the cooling action from the outside. As a result, a more homogeneous temperature distribution is obtained in the mould.

Abstract: The invention relates to a machine for working glass tubes, with several chucks circulating on a common axis and sweeping past several processing stations, there being mounted above each chuck a stepwise rotating magazine storing several glass tubes, each tube resting by its lower end on a non-rotating supporting plate which has a hole for the glass tubes to fall through for engagement by the chuck therebelow, the machine having a switch which causes the magazine to rotate, one step at a time, each step corresponding to the distance between two neighbouring tubes, in order to bring the next glass tube to the hole, and wherein between the hole of the supporting plate and the chuck therebelow there is a mobile arrestor blade which allows the magazine to rotate stepwise without a tube falling through the hole, until the chuck is empty, whereupon the blade can disengage so that it no longer blocks the hole.

Abstract: Apparatus for glazing bases of electric bulbs comprising a number of combined tools on the circumference of a continuously rotating rotor, the combined tools consisting of coaxially arranged upper and lower parts, a mold being formed by the lower part. The apparatus includes means for feeding molten glass and for pressing it by the upper part, means for checking the presence of base sleeves and contacts at the working station, and means for removing excess glass in the course of the pressing operation. The apparatus includes means for ejecting a sleeve from the lower part of any tool which does not contain a contact, and means for preventing the feeding of glass to any tool which does not contain a sleeve.

Abstract: In apparatus for molding glass into hollow-shaped articles such as glass containers, glass charges are delivered to a parison mold wherein the glass is shaped either by a plunger or by a counterblow within the parison mold. The charge of glass that is delivered to the parison mold is guided into the mold by a superimposed funnel. The funnel is alternately moved into and out of position at the open, upper end of the parison mold to effect the guiding of the charge. The mechanism for moving the funnel on a conventional I.S. machine must be capable of moving the funnel from an upper, radially displaced position, to a lower, seated position concentric with the mold. The operation of the funnel seating motion is accomplished by the use of a generally reciprocable, fluid-operated motor in which a funnel-carrying arm is fixed to the piston rod of the motor and the rod is turned about its vertical axis during its upward and downward movement.

Abstract: A moulding tool for a machine for moulding plastic material, especially molten glass, comprises at least one mould middle section divided into a plurality of middle section parts, and operating means having members each carrying with clearance a respective one of the mould middle section parts for opening and closing movements transversely of the longitudinal axis of the mould and transversely guiding the parts in two axially spaced guide planes by means of guide elements.

Abstract: A device is provided for holding and centering a rotating glass body such as a rod or tube. The device includes a tubular tip holder which may be held in a lathe chuck. The device can utilize a variety of centering tips each adapted for a particular configuration, such as a glass O-ring joint or semi-ball joint.

Abstract: The invention relates to a machine for manufacturing phials, ampoules or the like from thermoplastic substances, in particular glass, having a number of holders capable of rotating around their own axes and around a central axis, which are distributed around the circumference of the machine and are supported on a frame in the nature of a turntable, whose axis of rotation constitutes the central axis. The holders are mounted on segment-like carriers which together form a cylinder, and which are fastened to a support ring mounted on part of a ball race.

Abstract: A press-and-blow container making machine wherein one of two rotary tables supports a set of blank molds receiving gobs from a gob feed and the other rotary table supports a set of blow molds serving to convert parisons obtained from the blank molds into finished containers. An endless flexible conveyor carries neck rings which transport parisons from the first table, past a preliminary treating unit and on to the blow mold. The neck rings also transport finished containers away from the blow molds.

Abstract: The individual section of a Hartford I. S. type machine is modified to permit forming the parisons in an upright orientation, and also for transferring the upright parisons from the blank to the blow side of the section without disturbing this upright orientation. The pressing plungers at the blank station are mounted for movement toward and away from the upwardly open blank mold cavities, and each blank mold cavity is defined in part by partible neck ring molds, in part by a lower solid blank or body mold, and finally by intermediate partible mold sections which engage the upper neck ring molds and also the lower body mold. These intermediate mold sections at the blank side of the machine are mounted on the existing blank mold holder arms.

Abstract: A vapor shield supporting ring is attached to the envelope of a vacuum device. The supporting ring is embedded in the inner wall of the envelope and extends into the interior of such envelope. A welding flange is mounted on the interior portion of the ring. The ring does not extend to the exterior wall of the envelope. To embed the ring in the envelope, the ring is suspended by a holding means such as a magnet, which is placed into the desired position within a centrifugal mold. The molten glass is poured into the mold and the mold is spun, thereby flowing the glass along the walls and surrounding the outer portion of the supporting ring. When the glass solidifies, the supporting ring is firmly embedded in the wall of the envelope.

Abstract: Method of producing a moulded bottle having means which determines the relationship between the bottle body and the annular position of the finish thereof or associated means, such as a closure cap, pouring spout, delivery pump, or any other desired appurtenance, that is mountable upon the finish of the blown bottle in a predetermined annular position. This method may include moulding a parison in a blank mould and forming thereon a finish that has at least one guidance indexing means, i.e., physically engageable orientation guidance means, and transferring the parison from the blank mould to a forming mould which has a moulding cavity that is of a shape to produce the hollow bottle in its desired form. This forming mould may be a blow mould that has at a particular annular orientation determining point at least one other guidance indexing means complementary to that of the finish, i.e.

Abstract: Apparatus and transport system for production of pressed articles from plastic material, e.g., molten glass. A series of molds is routed on non-linked carriages over an endless course defined by a plurality of cooperating conveyors disposed over the course. The course comprises a charging section, a molding section, a solidification section, and a discharge section. Means can be provided for varying the speed of the carriages by operation of the conveyors in accordance with the working time at the respective sections.

Abstract: A device for positively positioning a tubular workpiece on a carrier, and in particular for positioning a tubular parison on a carrier of a conveyor within a parison heating oven. The parisons are engaged by a cam operated positioning cap which exerts a downward force on the top of the parison to position the parison on its carrier member.