Abstract: A method of molding a wine bottle adapted for use with one but not both of a cork-type plug closure or a Stelvin-type threaded closure includes forming a glass parison having a temporary body and a completed neck finish contoured for receiving either a cork-type plug closure or a Stelvin-type threaded closure. The glass parison is transferred to a mold stage, and the temporary body of the parison is blow molded at the mold stage to form a glass container having a neck coupled to the neck finish. With both neck finish geometries, the neck adjacent to the neck finish has external (L and K) dimensions adapted to receive a Stelvin-type threaded closure and a cylindrical interior adapted to receive a cork-type plug closure.

Abstract: A method for the manufacture of a fiber-reinforced thermoplastic composite module from a multiplicity of module components, which are continuously moved in the feed direction and are connected together section-by-section by means of a pressure application head that can be traversed in the feed direction and in the counter-direction. A device for the execution of the method is also disclosed.

Abstract: A process for manufacturing a hollow glass body by means of an individual section (IS) machine in a press and blow, narrow-neck press and blow, or blow and blow process, with a driving means that moves a plunger axially, to produce selected geometrical contours in a glass gob.

Abstract: There are provided, a method for efficiently manufacturing a glass substrate for magnetic disk in which the degree of surface irregularity of the principal surface is suppressed, and the glass substrate for magnetic disk. When manufacturing a glass substrate for magnetic disk including a pair of principal surfaces, a glass blank is formed by pressing molten glass or softened glass with planar press forming surfaces of dies in such a way that the molten glass or the softened glass is sandwiched from the both sides. Temperature condition is equalized around the pair of principal surfaces of the glass blank during the pressing.

Abstract: A narrow neck glass container includes a container body and a container neck finish. The container neck finish has an external closure attachment diameter of not more than 36 mm, and the container body has at least one internal embossment of predetermined geometry. The at least one internal embossment preferably comprises a plurality of internal embossments in a geometric pattern.

Abstract: Mold for manufacturing glass containers such as salad has at least one through hole through their walls with three distinct parts; a die defining the outer shape of the container adapted to receive a gob of glass in a plastic state; a plunger, the inner shape of the container to be molded; and a closing ring. The three parts are pressed onto one another to cause pressing and expansion of the glass gob in the cavity of the mold. The die has a monolithic construction of one piece, and the closing ring and the one-piece die have at least one protruding portion defining the shape of the through hole to be molded and formed in the container.

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: A method of making a glass container comprising providing a mold defining an article having a base at a bottom of the mold cavity where the mold cavity comprises an undercut portion that defines a recess in the mold cavity; introducing molten glass to the mold; cooling the glass to cause the glass to shrink a sufficient amount that the protuberance recedes from the recess; and removing the container from the mold in a linear direction.

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: In a process for a thin-plate form glass molded body, an upper mold part having a pressing surface is used together with a lower mold part having a setting surface arranged to be opposed to the pressing surface. A melted glass lump is pressed between the pressing surface and setting surface. The pressing is performed to set the temperature (° C.) of the thin-plate form glass molded body to a temperature of Tg?20 or higher, and lower than Tg, wherein Tg represents the glass transition point (° C.) of the glass, in a period of 0.8 second or less after the end of the pressing.

Abstract: The invention proposes a process for the production of a container made from glass, in the form of a hollow body open on both ends for pharmaceutical and medical applications, in particular in the form of a syringe barrel, where a glass drop (14) is dispensed from a melting unit, is placed into a mold (12) that is driven to rotate, and is formed by the effect of the centrifugal force, the mold being driven at a rotational speed of at least 5000 rpm, preferably approximately 50000 rpm.

Abstract: A method of fabricating a multi-tone glass vessel includes depositing a molten-glass first gob of a first glass color into a mold having a lower end and an upper end. An initial quantity of gas is injected into the mold in order to form a gob cavity within the first gob and cause the first gob to partially inflate and expand toward the upper end of the mold. A molten-glass second gob of a second glass color is deposited into the mold over the partially-inflated first gob. The introduction of a second quantity of gas into the gob cavity within the mold forms the first and second gobs into a single, multi-tone vessel of predetermined shape.

Abstract: A method of fabricating a decoratively-cracked glass vessel includes gathering a gob of molten glass and depositing the molten-glass gob into a pre-form mold. A quantity of gas is injected into the pre-form mold in order to form the gob into a pre-form vessel having at least one pre-form wall defining a pre-form vessel exterior surface and a pre-form vessel interior surface defining a pre-form cavity. The self-supporting, but still hot, pre-form vessel is removed from the pre-form mold and a surface of the pre-form vessel is rapidly cooled in order to crack in the cooled surface. The heated pre-form vessel is situated within a finish mold and a quantity of gas is injected into the pre-form cavity in order to seal cracks and form the pre-form vessel into a finished vessel having at least one finished vessel wall defining finished vessel interior and exterior surfaces between which cracks are visible.

Abstract: An improved and mechanically simplified blow head mechanism for blowing a parison and internally cooling the blown parison is disclosed which may be used with an I.S. machine to blow a parison to form a glass container and then internally cool the blown parison below the annealing point. The blow head mechanism has a cooling tube which supplies final blow and cooling air and which is raised or lowered by raising or lowering the blow head mechanism. The blow head mechanism supports a blow head with a pressurized cylinder which maintains the blow head in a position in engagement with the finish of a parison once initially lowered irrespective of the blow head mechanism being further lowered to lower the cooling tube into the blown parison.

Abstract: A narrow neck glass container includes a container body and a container neck finish. The container neck finish has an external closure attachment diameter of not more than 36 mm, and the container body has at least one internal embossment of predetermined geometry. The at least one internal embossment preferably comprises a plurality of internal embossments in a geometric pattern.

Abstract: An apparatus and method for manufacturing small quantities of cigarettes in a substantially simultaneous fashion while maintaining consistent quality between the cigarettes. The invention provides an apparatus and method for simultaneously inserting charges of tobacco into pre-formed tubular cigarette wrappers.

Abstract: Disclosed is a method for manufacturing a molded glass object. In the method, glass melt is made to flow from the front end portion of a nozzle; a prescribed weight of the glass melt flowing out is received by a glass melt receiving portion provided on a forming mold moved beneath the nozzle, wherein multiple forming molds are sequentially moved beneath the nozzle; the glass melt gob received is moved from the glass melt receiving portion to a hollow provided on the forming mold; and in the hollow, a molded glass object is formed while blowing gas upward through a gas outlet provided in the bottom of the hollow. The method is characterized in that the front end of the nozzle is constantly positioned outside the space vertically above the gas outlet. Methods of manufacturing press molded articles of glass and optical glass elements are described.

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 statio

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 statio

Abstract: Disclosed is a method of and device for manufacturing a molded glass object. In the method, glass melt is made to flow from the front end portion of a nozzle; a prescribed weight of the glass melt flowing out is received by a glass melt receiving portion provided on a forming mold moved beneath the nozzle, wherein multiple forming molds are sequentially moved beneath the nozzle; the glass melt gob received is moved from the glass melt receiving portion to a hollow provided on said forming mold; and in the hollow, a molded glass object is formed while blowing gas upward through a gas outlet provided in the bottom of the hollow. The method is characterized in that the front end of said nozzle is constantly positioned outside the space vertically above said gas outlet. Methods of manufacturing press molded articles of glass and optical glass elements are described. In these method, a molded glass object manufactured by the above method is heated, softened, and press molded or precision press molded.

Abstract: A hollow glass parison is formed by pressing a gob of molten glass in a mold cavity with a plunger which is moved in a linear direction by a leadscrew which is connected to the plunger and is driven by a servomotor. Actuation of the servomotor creates a rotation of the leadscrew which causes the plunger to advance in a linear direction from a first position until the plunger contacts the gob at a second position. The plunger then advances to press the gob in the mold cavity to form the gob into a parison. During movement of the plunger in the linear direction the position of the plunger is continually sensed with a position-sensing resolver which provides position information to a system controller which utilizes the position information to control the position of the plunger prior to contacting the gob in the mold cavity, the depth of plunger penetration into the gob of molten glass during pressing by controlling the pressing pressure, and the weight of the gob of molten glass.

Abstract: Method for the application of colored or uncolored decorations of transparent, opaque or opal glass or crystal glass to objects of preferably blown, press-casted, injection molded or centrifugally casted glass or crystal, according to which the object after an initial forming step is placed in a substantially tight fitting form (3), along the form surface of which decorational glass is pressed into created spaces (4) and fills the same. The invention also related to an arrangement for carrying out the method.

Abstract: A gob of molten glass from a gob delivery system is introduced into a blank mold of a glass container forming machine of the individual section type by way loading funnel immediately upstream of an opening into the blank mold. The loading funnel has an upper annular gathering portion in the shape of an inverted frustum of a cone and a cylindrical lower shaping and orienting section. The internal diameter of the shaping and orienting section is somewhat less than the outer diameter of a gob passing therethrough, to thereby contact the gob in a substantially circumferential pattern, and the shaping and orienting section has a length that is sufficient to precisely align the longitudinal central axis of the gob with a longitudinal central axis of the blank mold, to thereby eliminate or substantially eliminate the need to swab the interior of the blank mold with a mold dopant composition.

Abstract: A method and apparatus for forming a glass container in a blow-and-blow process. The apparatus includes an air flow controller having a housing defining a chamber, a piston disposed for reciprocal movement from a first position to a second position within the housing for moving a slide block therein, first and second passages extending through the slide block, a first port in the housing in flow communication with the second passage and a transducer when the piston is in its second position to create a negative air flow through the second passage and first port when a pressurized air flow is induced through the transducer to draw a vacuum beneath a gob in a blank mold to form a finish in the gob and sweep debris away from the gob and blank mold, and a second port in communication with the first passage and first port when the piston is in its first position to provide pressurized air to the gob.

Abstract: Gobs of molten glass fall in succession into a scoop which can be swivelled about a vertical axis and which supplies gobs to a delivery system, for example, of an I.S. glassware forming machine. The gobs travel along a path of movement from the scoop to a trough in free flight and to a deflector which is downwardly curved. The deflector delivers the gobs so that their longitudinal axis lies coaxially with respect to the longitudinal axis of a mold which is to be charged. The trough has its upper end supported by means of a universal joint. The lower end of the trough is guided in a vertical chute of the deflector and can be raised and lowered by means of an adjustment device.

Abstract: In forming a piano-convex lens from a column-like lens blank by heating the blank to a temperature higher than the transition temperature thereof and by pressurizing an upper die with a closed space formed between the blank and the upper die, there are alternately repeated operations of pressurizing the upper die and stopping the application of pressure thereto. Through the control of the amount of displacement of the upper die, the maximum pressure of gas in the closed space at each pressurizing step is so controlled: as to be low according to the surface viscosity of the blank to the extent that no local concave deformation in the surface of the blank is produced; and as to be high to the extent that gas caught in the closed space is discharged at each step of stopping the application of pressure.

Abstract: The present invention pertains to an apparatus for forming glass. The apparatus comprises a mold for holding molten glass. Additionally, the apparatus comprises a mechanism for applying pressure to the molten glass in the mold. The apparatus comprises a controller for controlling the applying mechanism such that pressure is applied to the glass at predetermined times. The present invention pertains to a method for forming glass. The method comprises the steps of placing molten glass in a mold. Preferably, the placing step includes the step of placing the molten glass at a temperature greater than 800.degree. C. into the mold. Next there is the step of applying pressure greater than ambient pressure to the molten glass in the mold. Before the applying step, there is preferably the step of cooling the molten glass to a predetermined temperature. The applying step preferably includes the step of applying the pressure until the pressure reaches a peak when the molten glass is cooled to a quench temperature T.sub.

Abstract: Optical glass preforms for use in subsequent molding processes for the production of lenses are produced which have a controlled peripheral edge wall geometry. Gobs of molten glass of predetermined weight and volume are dripped onto a lower mold surface. A pressing head including a sleeve and a plunger are lowered such that the sleeve surrounds the gob. The plunger is then depressed such that the upper mold surface of the plunger resides in a predetermined elevation above the lower mold surface thereby forcing the gob to conform to the cavity created within the sleeve and between the upper and lower mold surfaces. In such manner the sleeve serves as a form or exterior boundary for the resultant preform such that a preform is produced which requires no grinding or polishing prior to its use in subsequent molding operations.

Abstract: A method and apparatus for forming a hollow glass article comprises delivering a gob of glass to a blank mold, providing a first neck ring to a position adjacent the blank mold, forming the gob in the blank mold into a parison, moving the first neck ring to transfer the parison to a blow mold, blowing the parison in the blow mold to a hollow article, releasing the engagement of the first ring with the hollow article, moving the first neck ring away from the blow mold, removing the hollow article from the blow mold, returning the first neck ring to a position adjacent the blank mold to repeat the cycle, providing a second neck ring adjacent the blank mold while the first ring is moving toward the blow mold, delivering a second gob of glass to the blank mold while the second ring is in position adjacent the blank mold, forming the second gob into a second parison, moving the second parison to a position adjacent the blow mold while the first neck ring is being returned to a position adjacent said blank mold; an

Abstract: The invention comprises a novel type of glass for a cone (3) of a display tube envelope (1), said glass being manufactured by recycling screen glass and cone glass of display tube envelopes. A mixture of screen and cone glasses is supplemented with other glass-forming components to form a novel glass composition which can be used in cone glass applications. The glass is characterized by a relatively high BaO and SrO content. The glass has an x-ray absorption .mu. of at least 65 cm.sup.-1 at 0.6 .ANG..

Abstract: In forming a plano-convex lens from a column-like lens blank by heating the blank to a temperature higher than the transition temperature thereof and by pressurizing an upper die with a closed space formed between the blank and the upper die, there are alternately repeated operations of pressurizing the upper die and stopping the application of pressure thereto. Through the control of the amount of displacement of the upper die, the maximum pressure of gas in the closed space at each pressurizing step is so controlled: as to be low according to the surface viscosity of the blank to the extent that no local concave deformation in the surface of the blank is produced; and as to be high to the extent that gas caught in the closed space is discharged at each step of stopping the application of pressure.

Abstract: In manufacturing a glass material used for a re-heat press method of manufacturing high-precision optical glass components including a lens, prism or the like, a glass material can be manufactured which has no defect inside of or on the surface of the glass, and without requiring a process of grinding and polishing the glass. The glass material is manufactured by dropping melted glass from the glass outlet of a glass melting furnace to a mold and cooling the dropped glass on the mold. The distance between the mold and the glass outlet is in a range which maintains the temperature of the stretched area of dropping glass--the area where the melted glass dropped on the mold is spontaneously separated by its own weight and surface tension at its softening temperature or above. The temperature of the glass around the stretched area is at least its softening temperature, and the glass around that area is instantaneously incorporated into the glass on the mold after separation.

Abstract: A method of distributing molten glass gobs in an IS machine whereby gob scoops are positioned beneath associated gob discharges for motion independently of each other. Each scoop is driven by a three-phase electric servo motor to swing through an arc independently of the other scoops while maintaining a position beneath the associated gob discharge.

Abstract: A method of collecting data to indicate certain internal conditions during the function of a glass container forming machine, and apparatus for the practice of the method including sensing devices within a plunger cycling mechanism of the machine for transmitting information from the mechanism during the operation of the machine.

Abstract: A gob of glass sucked from a glass metal and held in a suction mold (7) is further processed by preshaping the glass in the mold by a punch (4) having a projection (9) for forming in a recess or cavity (14) in the gob in the opening in the mold, and a plate-like surface (10) for forming a plate shaped bead (5) around the opening. This results in a large contact surface against which a blowpipe (1') with a transverse attachment plate (6) having a working surface flush with the end of the bore (3) of the blowpipe is pressed to attach the plate (6) to the bead (5). With this arrangement, the bore cannot become blocked with glass during the pressing operation.

Abstract: Optical fluorophosphate glass which is based on Mg(PO.sub.3).sub.2, Ca(PO.sub.3).sub.2, Ba(PO.sub.3).sub.2, Al(PO.sub.3).sub.3, MgF.sub.2, CaF.sub.2, SrF.sub.2, AlF.sub.3, BaO and SrO and has a refractive index n.sub.e between 1.515 and 1.546, an Abbe value .nu..sub.e between 75.8 and 77.4 and a positive anomalous partial dispersion value .DELTA..nu..sub.e between 14.85 and 15.15.The glass comprises (in weight-%) 2.4-2.7 Mg; 4.5-4.9 Ca; 15.9-17.6 Sr; 20.2-22.3 Ba; 5.6-6.2 Al; 8.8-9.7 P; 22.0-24.3 F and 15.7-17.4 O. The improved physico-chemical parameters, such as linear expansion coefficient, glass transition temperature T.sub.g, density .zeta., Knoop-hardness HK, etc., are stated. Finally, a production process for this optical glass is described.

Abstract: Parisons of molten glass for subsequent moulding are molded in a mould cavity formed from one-piece lower portion (10), a dividable neck ring (14), and a dividable central mould portion (24). A gob of molten glass is introduced into a gov uide (58) so that the gob passes into the mould through the neck ring (14). A plunger guide (42) which serves to guide the plunger (26) through the neck ring (14) is introduced into the gob guide (58) and a plunger (26) is introduced into the plunger guide (42) so that the plunger enters the mould through the neck ring (14). During pressing of the glass, the guide (42) which serves to guide the plunger (26) through the neck ring (14) is pressed downwardly on to the neck ring (14). The guide (42) defines a sealing surface (54) of the neck portion (16) of the mould cavity.

Abstract: In a pressing machine for the manufacture of glass articles, which comprises, a base; a gyratory table composed of mold supporters equidistantly laid out around the table, thereby carrying the molds from one station to the next as the table gyrates intermittently, said table comprising a number of stations, among which are stations of charging, stations for pressing and cooling articles, extracting stations and stations for the cooling of the molds, wherein such stations includes a series of mechanisms; means to drive the rotating table coupled to said table to rotate the same; and a feeder in combination with said machine which provide a gob of glass to the station of charging by each cycle of the machine, a method and an apparatus is provided to controlling the cycle of operation of the machine and the operation of the diverse mechanisms including: a sensor to determine the instant in which a gob of glass is cut from said feeder and position sensors to detecting the real position of the diverse mechanisms o

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: Method and apparatus are set forth for forming articles from molten sheet glass wherein the molten sheet glass initially substantially conforms to a mold cavity by a combination of vacuum and/or gravity, and then while still in a semi-molten condition the sheet is pressed into a finished ware article.

Abstract: A single mold and plunger set is programmed to form a parison within each of a plurality of neck rings which are continuously successively presented along a linear path. The mold, which is positioned below the linear path of said continuously successively presented neck rings, receives a charge of molten glass and accelerates in a direction parallel to said linear path to a speed commensurate with that of the continuously presented neck rings, and upon tracking with a particular neck ring, such mold moves vertically into engagement with a bottom portion thereof. Simultaneously, the plunger, which is positioned above said linear path, accelerates in a direction parallel with the movement of said continuously presented neck rings to a speed commensurate therewith, and upon tracking said particular neck ring moves vertically into engagement with an upper portion thereof so as to press form the charge of molten glass deposited within the mold into a shape determined by the shape of the parison mold and plunger.

Abstract: This invention relates to a process for injection molding hydrosilicate glasses and apparati useful therefor. This invention is also concerned with apparati for mixing hydrosilicate glasses while in the fluid state, i.e., when the hydrosilicate glasses have a viscosity between about 10.sup.2 -10.sup.9 poises. Finally, this invention describes materials demonstrating ready release of hydrosilicate glasses after contact in fluid form.

Abstract: A method for casting vitreous materials using the lost wax process in which a pattern of the article to be cast is formed with a substance which is vaporized at the casting temperature of the vitreous material. The pattern is embedded in a heat resistant silica compound such as sand which surrounds the pattern to form a casting mold. The sand is contained in a receptacle called a casting shell. The vitreous material is heated to a temperature at which its viscosity is between 20 and 100 poises and the article is cast.

Abstract: A blown hollow glass object having an optical inner wall structure is produced by pressing a plunger against a heated glass blank which has been inserted into a hollow mold cavity. The plunger is configured to taper toward a narrower end in the direction in which the plunger is introduced into the mold cavity. After formation of the optical inner wall structure by pressing of the plunger against the glass blank, the plunger is longitudinally withdrawn. The optical inner wall of the glass object is formed as a result of a generally helically shaped molding pattern defined about the exterior surface of the plunger. The molding pattern is configured in such a way as to prevent deformation of the optical inner wall structure when the plunger is withdrawn.