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: An apparatus and method for manufacturing glass objects comprising a blowing glass blowing pipe and a metal mounting insert configured to melt with glass to form a glass piece that is easily removed from the glass blowing pipe without the need to break the glass from the headstock of the glass blowing pipe. A method for manufacturing a glass object utilizing a metal mounting insert is described. A glass object having a metal mounting insert for installation and use in other applications is also described.

Abstract: A rough mold of a machine for forming glass items is provided with a multifunctional group, which has a common support head; a handling device for moving the common head along a first handling axis; and a further handling device for rotating the common head about a second handling axis; the common head being fitted with a mold closing member for sealing the top opening of the rough mold, and at least one further operating member selectable from a funnel-shaped member for guiding at least one glass gob into the rough mold, a blowing member for blowing pressurized air into the rough mold, and one or more members for treating the inner surface of the rough mold.

Abstract: An apparatus and method for manufacturing glass objects comprising a blowing glass blowing pipe and a metal mounting insert configured to melt with glass to form a glass piece that is easily removed from the glass blowing pipe without the need to break the glass from the headstock of the glass blowing pipe. A method for manufacturing a glass object utilizing a metal mounting insert is described. A glass object having a metal mounting insert for installation and use in other applications is also described.

Abstract: An apparatus and method for manufacturing glass objects comprising a glass blowing pipe and a metal mounting device configured to melt with glass to form a glass piece that is easily removed from the glass blowing pipe without the need to break the glass from the headstock of the glass blowing pipe, wherein the metal mounting device comprises a contact patch and a number of slits to secure the metal mounting device to the glass. A method for manufacturing a glass object utilizing a metal mounting insert is described. A glass object having a metal mounting insert for installation and use in other applications is also described.

Abstract: An I. S. Machine includes a blow station having a blow mold which closes to support a parison with the supported parison undergoing reheat and then being blown into a bottle. When reheat takes place air at low pressure is supplied to the blow tube to pressurize the interior of the parison to prevent the formation of a birdswing in a blown bottle. Air at a second pressure is supplied to the blow tube for blowing the parison into a bottle following reheat.

Abstract: A rough mold of a machine for forming glass items is provided with a multifunctional group, which has a common support head; a handling device for moving the common head along a first handling axis; and a further handling device for rotating the common head about a second handling axis. The common head being fitted with a mold closing member for sealing the top opening of the rough mold, and at least one further operating member selectable from a funnel-shaped member for guiding at least one glass gob into the rough mold, a blowing member for blowing pressurized air into the rough mold, and one or more members for treating the inner surface of the rough mold.

Abstract: An I.S. machine has a blow station where a parison is blown into a bottle. The parison is blown with a blow head at the “on” position on the blow mold and following the blowing of the parison, the blow head is lifted away from the blow mold. The spacing between the blow head and the mold is defined by a Pressure Profile which is responsive to the sensed pressure within the mold.

Abstract: In order to avoid deposition of evaporating alkali compounds on an inner surface of a hollow glass body during thermal processing to form a glass container from the hollow glass body, an overpressure is provided in the hollow glass body during the thermal processing. Either rinsing the hollow glass body with a gas, such as air, or at least partially closing the glass body at one end so that sufficiently rapid pressure equilibration is avoided, can provide this overpressure. The glass containers made by these methods are especially suited for food or pharmaceuticals because they have a reduced alkali release from their inner surfaces, for example at most about 2.0 mg/l sodium oxide.

Abstract: An I.S. machine has a blow station where a parison is blown into a bottle. The parison is blown with a blow head at the “on” position on the blow mold and following the blowing of the parison, the blow head is lifted away from the blow mold. The spacing between the blow head and the mold is defined by a Pressure Profile which is responsive to the sensed pressure within the mold.

Abstract: A glassware forming machine blowhead arm assembly includes a one-piece blowhead arm body having at least one longitudinal air passage and a plurality of lateral air passages connected to the longitudinal passage. A blowhead chuck is removably received in a first end of each lateral passage and a cap is threaded into the second end of each lateral passage spaced from the associated blowhead chuck. A spring is captured in compression between each cap and an associated blowhead chuck biasing the blowhead chuck in a direction out of the lateral passage and away from the cap. In an exemplary embodiment of the disclosure adapted for use in conjunction with so-called isolated finish cooling blowheads, there are first and second longitudinal air passages extending through the blowhead arm body separately from each other, and separate air inputs in the body respectively coupled to the first and second longitudinal passages.

Abstract: The invention relates to a method of producing glass articles, especially closure bodies of glass such as, for example, glass stoppers, wherein the following steps are carried out: a) introducing a portion unit of liquid or paste-like glass into a negative mould (10) of an article to be produced; b) applying negative pressure to the negative mould (10) for a period which is sufficient for the liquid or paste-like glass to be sucked into the negative mould (10) and to be brought into exactly fitting contact with the walls of the negative mould (10); c) cooling and de-moulding of the moulded glass article. The invention further relates to an apparatus, to a plant and also to the use of the apparatus and plant in the production of glass articles.

Abstract: A glassware forming machine blowhead arm assembly includes a one-piece blowhead arm body having at least one longitudinal air passage and a plurality of lateral air passages connected to the longitudinal passage. A blowhead chuck is removably received in a first end of each lateral passage and a cap is threaded into the second end of each lateral passage spaced from the associated blowhead chuck. A spring is captured in compression between each cap and an associated blowhead chuck biasing the blowhead chuck in a direction out of the lateral passage and away from the cap. In an exemplary embodiment of the disclosure adapted for use in conjunction with so-called isolated finish cooling blowheads, there are first and second longitudinal air passages extending through the blowhead arm body separately from each other, and separate air inputs in the body respectively coupled to the first and second longitudinal passages.

Abstract: A plunger for intermittently delivering counterblow air to a gob glass at a formidable temperature in a blank mold of an I.S. glass container forming machine being operated on the blow and blow process. The plunger comprises a fixed annular member with an enlarged recess at an inlet end and a valve seat at an upper end. The plunger has a sliding valve member with an annulus of the annular member, and the valve member has a stem portion and an enlarged valve seat portion at a free end thereof. The plunger further has a collar threadably and adjustably secured to the stem portion of the sliding valve member, and the collar, which is slidable within the recess of the annular member, has a plurality of air flow passages extending therethrough. Pressurized air is intermittently delivered to the recess of the annular member through an inlet line, which as an on/off valve therein.

Abstract: A manual glass lathe used for shaping and coloring clear glass tubes. The manual glass lathe, in the preferred embodiment, comprises a tubular handle, designed to be held in one hand, and a thumbwheel located towards the working end of the handle, and is used by a glass-blower to precisely control the spin of a glass workpiece and the proximity of the workpiece to a flame and to various shaping tools and/or fuming rods. The handle makes use of an interior arrangement of bearings and o-rings to center and hold the mandrel, and also comprises an inner sleeve used as an inertial weight to enhance spinning momentum. Also a method for using such a manual glass lathe to shape and fume glass workpieces.

Abstract: A blowhead assembly for receipt over a parison finish to blow the parison within a blow mold and simultaneously cool the parison finish includes a blowhead body having a first chamber at one end for receipt over the finish of a parison in a blow mold, and at least one passage in the blowhead extending to the chamber from a first inlet for directing cooling air onto the external surface of a parison finish in the chamber. A second chamber in the blowhead body is spaced from the first chamber, and at least one second passage in the blowhead body extends to the second chamber from a second inlet for directing blow air into the second chamber. A first tube extends from the second chamber through the first chamber for receipt within a parison finish in the first chamber to feed blow air from the second chamber into the parison. A second tube extends from an exhaust passage in the blowhead body through the second chamber and through the first tube for receiving exhaust air from the parison.

Abstract: A blow head is displaced to the “on” position where its lower portion engages the top of a blow mold. Final blow begins and before final blow is completed, the blow head is raised a selected distance and final blow is exhausted between the O.D. of the formed finish and the upwardly defined annular recess in the lower portion of the blow head. The annular recess is concavely curved to direct exhaust air at the finish to cool the finish.

Abstract: A parison is blown in the blow mold of an I.S. machine and a control determines the time of the event by defining a local minimum in the pressure vs. time plot.

Abstract: A method of fabricating at least one hollow glass article by implementing fabrication cycle consisting, specifically, in stretching the blank prior to inflating it by transferring the blank into a finishing mold that includes a suction cup in its mold cavity, the suction cup being movable in translation parallel to the axis of the mold over a stretching stroke between firstly an extended position inside the mold and secondly a retracted position in which the suction cup is situated at the bottom of the mold. The method includes the step of establishing suction in the suction cup prior to the bottom of the blank coming into contact therewith, thereby uniting the bottom of the blank with the suction cup while it is placed in its extended position, and then displacing the suction cup to its retracted position in order to stretch the blank.

Abstract: A blow mold assembly for an I.S. machine for blowing a parison of glass and cooling the blown parison into a formed bottle which can be removed from the blow mold. A blow head is lowered onto a blow mold and final air is applied. The blow head is lifted a selected vertical distance above the top surface of the blow mold to an exhaust position allowing cooling air to escape from the blow mold. The selected vertical distance is selected so that at least a minimum pressure will continue within the formed bottle. The blow head is maintain at the exhaust position for a predetermined time and then retracted. A first pressure is applied while the blow head is at the lowered position and a higher pressure is applied while the blow head is at the escape position.

Abstract: A manual glass lathe used for shaping and coloring clear glass tubes. The manual glass lathe, in the preferred embodiment, comprises a tubular handle, designed to be held in one hand, and a thumbwheel located towards the working end of the handle, and is used by a glass-blower to precisely control the spin of a glass workpiece and the proximity of the workpiece to a flame and to various shaping tools and/or fuming rods. The handle makes use of an interior arrangement of bearings and o-rings to center and hold the mandrel, and also comprises an inner sleeve used as an inertial weight to enhance spinning momentum. Also a method for using such a manual glass lathe to shape and fume glass workpieces.

Abstract: A plunger (10) for intermittently delivery counterblow air to a gob glass at a formable temperature in a blank mold of a I.S. glass container forming machine that is being operated on the blow and blow process. The plunger comprises a fixed annular member (12) with an enlarged recess (12a) at an inlet end and a valve seat (12d) at an upper end. The plunger also has a sliding valve member (14) within an annulus of the annular member (12), and the valve member (14) has a stem portion (14a) and an enlarged valve seat portion (14b) at a free end thereof. The plunger further has a collar (16) threadably and adjustably secured to the stem portion of the sliding valve member, and the collar, which is slidable within the recess of the annular member, has a plurality of air flow passages (16a) extending therethrough. Pressurized air is intermittently delivered to the recess of the annular member (12) through an inlet line (20), which has an on/off valve (22) therein.

Abstract: The invention concerns an automated method for producing a blown glass body, in particular a glass wall of an electrochemical sensor, wherein an immersion tube (10), through which air or gas can flow, is immersed into molten glass (8) and subsequently withdrawn to remove an amount of molten glass from the molten glass mass, and wherein the removed glass is blown into the form of the glass body to be produced by means of the air or gas flowing through the immersion tube (10), comprising the following features:

Abstract: A blow molding apparatus and a nozzle operable to provide fluid into an interior of a blank. The blank is supported in a mold such that a neck of the blank emerges from a wall of the mold. The nozzle includes a nozzle tip and an opening that surrounds the neck of the blank. A peripheral edge of the opening comes to rest on the mold and a seal is provided between the opening and the mold. In one embodiment, the seal is held on the nozzle by a locking ring.

Abstract: Apparatus for monitoring application of air through a dual-stage blowhead to blow mold a container includes a first solenoid valve for applying final blow air through the blowhead to a container in a mold and a second solenoid valve for applying finish cooling air through the blowhead around the finish of the container in the mold. Electronic circuitry is coupled to the first and second solenoid valves for detecting timing of application of first and second electrical valve control signals to the valves. Air pressure sensors are operatively coupled to the first and second solenoid valves for generating associated electrical signals indicative of timing of application of air by the first and second solenoid valves to the blowhead.

Abstract: An apparatus for applying heat to a rotatable workpiece is disclosed. A rotating lathe is provided for mounting a workpiece, for example a quartz tube, thereto so as to enable rotation of the workpiece. At least one translatable burner is coupled to a fuel source and an oxygen source for producing a flame. The burner is directed such that flame impinges upon the workpiece mounted on the rotating lathe. A first pulse control valve is coupled to and positioned between the translatable burner and the fuel source. A second pulse control valve is coupled to and positioned between the translatable burners and the oxygen course. The first and second pulse control valves are pulsed at a predetermined frequency to prevent the formation of a steady thermal boundary layer about the workpiece to improve the rate of heat transfer between the flame and the workpiece.

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: A glass substrate is positioned between a chamber with a reduced pressure and a chamber filled with a heated helium, and the glass substrate is forcibly bent by the pressure difference and the heated helium gas into a uniform shape. The irradiation of laser light is carried out in this state to compensate the difference of annealing effects due to fine difference of deformation of the respective glass substrates.

Abstract: A lathe for blowing glass. The lathe includes a lower section and an upper section removably attached to the lower section to form a housing. A motor is operably connected to a gear assembly. At least one roller assembly rotatably supports a blowpipe. An air coupling assembly rotatably attached to the gear assembly allows air to pass from a blowhose to an air tube frictionally engaging the blowpipe. A sprinkler system may be provided for cooling the blowpipe while the article is being formed. The speed and direction of rotation of the blowpipe can be manually or remotely controlled by the glassmaker. Thus, the lathe is capable of rotating the blowpipe while air is being provided to the blowpipe to form the article.

Abstract: A baffle assembly for use in a glassware forming machine to provide a settle blow to settle a gob in a parison forming mould cavity and a mould closing surface to close the mould cavity comprises a first member which comprises a mould cavity closing surface and settle blow air passages opening to positions spaced from the mould closing surface, and a second cup shaped member mounted on the first member for axial movement between an extended position and a second position in which a circumferential locating surface on the second member is substantially level with the end surface of the baffle head.

Abstract: A plunger assembly for a glassware forming machine is readily convertible between, for example, double and triple gob configurations and between press and blow and blow and blow operation. A framework is provided with a replaceable positioning plate with recesses corresponding to the required number of cylinders, and air connections are provided which, when the cylinders are in position, provide the necessary operating air.

Abstract: The method and apparatus for producing a hollow glass article permit removal of a resulting hollow glass article without severing a moll. By this, glass powder which would otherwise be caused and fallen into the hollow glass article during severing the moil may prevented. The invention also permits elimination of a means for positioning a respective blow head and for stopping rotation thereof. A quantity of molten glass of a disk-shaped configuration is supplied onto a support ring. Each blow head is lowered onto a corresponding support ring. The molten glass on the support ring is held by the blow head by its periphery. Then, the support ring is removed or withdrawn. A quantity of air is blown into the molten glass by means of the blow head so as to form a hollow glass article. Subsequently, the holding ability of the blow head is eliminated, so as to remove or unload the resulting hollow glass article. Alternatively, the support rings may be omitted.

Abstract: An arrangement in a glassware forming machine for connecting a supply of operating air to a mechanism mounted in a frame of the machine, which mechanism may need to be adjusted in position vertically in the machine comprises a flexible pipe which connects the mechanism to a supply of operating air, and a sleeve for permitting a change of length of the pipe so that adjustment of the mechanism can be accommodated.

Abstract: A forming process which utilize blown-blown technique has an initial phase, a transfer phase, and a finishing phase for producing a hollow glass object provided with a neck. During the initial phase all or part of the internal profile of the neck is molded by a mechanical element.

Abstract: This invention relates to a method and apparatus for forming a glass container by a press-and-blow system wherein the glass container is provided with a reinforced inner surface. According to the inventive method, fuel gas or a gaseous boron or silicon compound is burnt or otherwise reacted inside a parison after the parison molded in the blank mold is transferred to the finish mold. The burning or other reaction of the fuel gas or gaseous boron or silicon compounds can be carried out just prior to the final blow-molding step in which the parison is blow molded into its final shape, simultaneous with the final blow-molding step, or just after the final blow-molding step. The apparatus of the present invention includes a finish mold provided with a blow head which includes a low selector valve. The low selector valve is open during combustion or other reaction within the parison and is automatically closed during the final blow-molding step by the pressure of the compressed air used in the final blow-molding.

Abstract: Mechanism for moving an operative member such as a blowhead funnel or baffle in a glassware forming machine comprises a piston rod on which the operative member may be mounted and two piston heads on the rod which may be operated independently of each other, one to cause axial movement of the rod and the other to cause rotation of the rod.

Abstract: A check valve assembly which is to permit flow into a pneumatic cylinder is accessible without taking the cylinder apart. The check valve is located within an insert which is secured to the cylinder head at an exterior surface. Removal of the inserts makes the check valve accessible.

Abstract: The support is for an operative member, e.g. a funnel, a baffle or a blowhead, which moves between operative and out-of-the-way positions along a path which has a vertical component and an arcuate component about a vertical axis. The support comprises a first portion (16), a second portion (30) movable vertically relative to the first portion, and clamping means (18,20,28) operable to clamp the first portion to the piston rod (14) of a piston and cylinder assembly which moves the member. The operative member is mounted on the second portion (30) and moving means (32,36) is operable to move the second portion (30) vertically relative to the first portion (16). Operation of the moving means (32,36) can be used to increase the vertical component of the path.

Abstract: A blowhead (10; 100) for blowing air through a neck opening (12; 112) of a glass parison (14; 114) to cause it to expand. The blowhead defines an air supply passage (28; 128) through which air can enter the parison and an exhaust passage (45; 145) through which air can exhaust from the parison. The cross-sectional area, transversely to the direction of air flow, of at least a portion of the exhaust passage is adjustable.

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: An operative member such as a blowhead (10) is moved between an out-of-the-way position thereof and an operative position thereof by moving means which comprises a vertical shaft (15), means for moving the shaft vertically and turning it about a vertical axis (14), and a support (18) for the operative member clamped to the shaft. The support (18) comprises an arm (20) on which the member is mounted and clamping means (30,34,38,40) to clamp the support to the shaft. Complementarily-shaped camming surfaces (22 and 36) of the shaft and the support urge the support into the correct orientation with respect to the shaft.

Abstract: A carrier arm for a glass blowing machine employing two or more holders with removable heads. The heads fit into the holders by the utilization of a bayonet fitting, and a retainer ring is provided that encircles the holders and maintains the heads in locked position in the holders without exerting any lateral forces on the heads.

Abstract: A blow head which defines an upper portion of a mould cavity in which glass parisons are blown to the shape of mould cavity is moved into and out of operative position by a combination of horizontal and vertical movement. The vertical movement is brought about by a first piston and cylinder assembly (24, 26) and a second piston and cylinder assembly (38, 40) is operable, as the blow head approaches the parison, to oppose the action of the first piston and cylinder assembly (24, 26) thereby cushioning any impact between the blow head (4) and the parison.

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 blow-pipe 1 with an upper end 2 shaped to retain a working amount of molten glass is vertically movable from beneath the surface of molten glass 9 in a furnace to an upper position within orifice 10a of cover plate 10 and just below a cylindrical guide tube 11. Upward movement brings the blow-pipe generally into a hotter environment, expands the internal air and thus provides an initial bubble at the blow-pipe end. This is progressively expanded into the guide tube, preferably by two-stage air supply at different pressures, to produce a constrained glass bubble, of a few microns thickness.

Abstract: A blowhead apparatus including a blowhead arm and a blowhead body having at least one blowhead therein. The blowhead body is removably connected to the blowhead arm. The blowhead includes a retaining member, a seating member mounted on a sealed bearing, and a sealing ring having a seating surface mating with a seating surface on the seating member. A fluid system for supplying high and low pressure air includes a sealed pilot operated shuttle valve for controlling the high and low pressure air, a pilot valve for controlling the shuttle valve, and an on-off valve for the low pressure air.

Abstract: An arm which may support a baffle or blowhead is adapted at one end for clamping to a vertical shaft. First and second holder units are supported by the arm between its ends. Each unit has a holder open at its bottom and into which a baffle or blowhead may be inserted from below. A spring biased latch is provided for each unit and adapted to prevent relative rotation between the holder and its associated baffle or blowhead. A manifold in the arm communicates with each unit by exposed conduits.

Abstract: A parison mold and baffle system for an automatic molding machine of I-S type includes a two piece split parison mold with an integral funnel. A combined blow-down and baffle member cooperates with the mold in a first position to perform the blow-down function and then in a second position acts as the bottle bottom end of the mold during the blow-back final shaping of the parison.

Abstract: In apparatus for molding glass bottles having externally threaded necks, neck ring mold halves are given greatly increased life between down time, as well as increased ease of service, by machining away the threaded cavity portion below the well which accommodates the guide ring, so as to provide a somewhat rectangular recess in the bottom portion of each mold half, and inserting and securing in each mold half a sintered metal threaded cavity insert. Where a double lead thread is utilized, the inserts may be identical in each mold half. Great precision is afforded to the inserts when formed oversize by pressing in a direction perpendicular to with the parting plane, the oversized outer edge surface being then machined parallel to the parting plane to fit precisely within the recess.

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.