Abstract: A flow-through device for use during the installation of an inverted resin impregnated flexible tubular liner in a passageway permitting the flow of fluids through the liner during the curing portion of the installation process is provided. A cylindrical body has an expandable bladder interior sealingly attached to the interior of the tubular body to form a pressure chamber is attached to the trailing end of the liner. Pressurized fluid is supplied to the chamber to inflate the bladder to close the end of the liner. The bladder allows flow through the passageway during curing of the liner, when the effluent pressure exceeds the pressure in the bladder.

Abstract: A mechanism for forming a distal face of a fiber-optic core uses a motor to drive a lifter which has an upper protrusion and a lower protrusion. A first seat having a fiber-optic core-securing clamp provided thereon and a second seat having a heater are forced to move upward and downward, respectively, by the upper protrusion and the lower protrusion until the heater and core engage a mirror plate with a plurality of recesses provided therein. By virtue of moving the first seat and the second seat with the lifter, the heater heats the mirror plate and, after the first seat descends and engages the core with the mirror plate, a distal face of the fiber-optic core is formed as a male equivalent of the recesses of the mirror plate.

Abstract: A melt line and a spin beam equipped therewith are disclosed, wherein the melt line (3) serves to advance a molten plastic between a delivery member and an outlet member such as a spinneret. The melt line includes a first line segment (15) and a lower second line segment (17), both of which are downwardly inclined. Also, the first line segment (15) and the second line segment (17) are interconnected by an elbow (16), the elbow (16) having likewise a downward inclination over its entire length and following substantially the form of a helix.

Abstract: An external stabilizer employed in a plastic film blowing apparatus incorporates one or more extruded members that carry a low-friction plastic wear cover. A tubular die, fed with a supply of molten thermoplastic polymer, extrudes a tube of the molten polymer and injects air into said extruded tube to inflate the tube into a bubble. The wall of the tube expands into a film of a desired thickness; and the tube is drawn vertically upward and collapsed and flattened. The external stabilizer is positioned on a frame surrounding the extruded tube above the die to keep the tube aligned on a predetermined path as the tube is drawn upwards. The stabilizer includes at least one extrusion of a light-weight material having a profile that is rounded on a side that faces the extruded tube so that said extrusion has a rounded front surface. The associated wear cover is made of a wear resistant plastic material and is disposed on said rounded front surface of said extrusion.

Abstract: An improved zipper teeth forming mechanism for zipper forming machines. The teeth forming mechanism includes a mold base, a support seat, a seat cover, a screw sleeve and a ram mechanism. The screw sleeve consists of an upper portion and a lower portion defining a space therebetween for accommodating a forming screw. The upper portion has an elongate groove and a notch. A central rod is disposed in the groove while the ram mechanism is secured at the notch of the upper portion of the screw sleeve. The ram mechanism consists of a ram adjusting seat with a post, a bearing positioned on the post, a ram roller fitted on the bearing and a slide block fitted on the post of the ram adjusting seat.

Abstract: A withdrawal device for a plastic tubular film is manufactured in a blowing method by an extruder. To prevent the formation of center wrinkles in the withdrawal of plastic tubular film, at least one deflection cylinder and/or angle bar has a differing diameter across its length.

Abstract: An apparatus and method for forming a seal portion of a tubular body of synthetic resin is provided in which the seal portion has increased density and reduced foaming. The apparatus includes a pair of clamps that clamp an end portion of a tubular body of resin flat. A heater heats and fuses a projecting end portion projecting from the clamps. A bending member bends side projecting portions of the body formed during heating so that they are inwardly projecting. A press member presses the projecting end portion to form a seal portion.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port.

Abstract: A guide roller assembly is provided for use with a vacuum sizing apparatus having an elongated vacuum cooling tank containing a water bath through which plastic extrudate passes longitudinally. The guide roller assembly has a plurality of guide rollers each individually mounted on its own roller axle. A roller assembly pivot shaft is removably and pivotally secured within the elongated vacuum tank and supports the axles of the respective guide rollers. The guide rollers may be pivotally rotated between a working position where the axles are horizontal and the guide rollers bear down upon the extrudate passing through the vacuum cooling tank and a nonworking position where the guide rollers are raised above the water surface of the vacuum cooling tank and to one side of the tank. The entire guide roller assembly may be removed from the vacuum tank by retracting the telescoping pivot shaft and removing the ends of the pivot shaft from recesses formed in the end walls of the vacuum cooling tank.

Abstract: A simple apparatus for forming a fill line in a paper beverage container such as a paper cup is disclosed. The apparatus includes no moving parts. A fill line is formed by forcing a punch of a mating ring into a finished cup positioned in a die which includes an annular recess spaced below the rim of the finished cup, the annular recess terminating in a bottom edge which serves as an anvil surface for forming the fill line. The fill line provides a user of the beverage container with a reference point for establishing a consistent measure of volume. The advantage is a simple apparatus adapted to be fitted to most paper cup finishing machines. The apparatus has no moving parts and is therefore not prone to requiring maintenance or replacement.

Abstract: A compact apparatus for everting a liner utilizing fluid pressure after the liner has been aligned with the conduit to be lined is provided. The apparatus includes a sphincter valve with its axis aligned with the conduit to be lined and an eversion pressure chamber overlapping a portion of the sphincter valve for reducing the length of the apparatus and allowing positioning in a sewer manhole. A downtube is positioned at the input side of the sphincter valve which can extend to the top of the manhole. To install a liner, the apparatus is placed in the entrance manhole with the sphincter valve aligned with the axis of the sewer pipe, the liner is inserted into the downtube, turned to align with the sphincter valve and conduit and fluid pressure is applied to the valve to engage the flattened liner which after passing through the valve is everted by fluid pressure as it enters the sewer pipe.

Abstract: A bending process including both preliminary and following steps takes place in one apparatus. A plastic pipe (6) is heated to a temperature in which it can be plastically deformed. The heated pipe is thereafter shoved into a pipe-shaped bending channel (27) of a bending tool, with the bending tool comprising two dies (9,10), each respectively defining a groove (14,13) which together form the bending channel. Finally, a cooling agent is allowed to flow through the bent pipe which is still in the bending tool. The thusly cooled pipe is removed from the bending tool after the dies are separated from one another. The apparatus to bend the plastic pipe comprises heating, bending, and cooling stations (1,2,3). The heating station comprises two heating fixtures, and the cooling station comprises a supply line (21,22) with a coupling joint (20) which can be coupled to an end of the pipe.

Abstract: The invention relates to a method and an apparatus for forming ribs with sideward projections in a plastic pipe. The projections are formed by means of elongated rolls (10) each moving around the pipe and rotating about its central axis, the rolls being in an inclined position and at an oblique angle with respect to the central axis of the pipe.

Abstract: A travelling mold has mold blocks formed by opposing mold block sections which open and close relative to one another. The mold sections travel horizontally around a continuous track which is fitted with a plurality of side-by-side mold block carriers on which the mold block sections are releasably supported. The mold block carriers are provided with carrier gears which engage with the main drive gear of the mold so that the mold is driven by engagement of the drive gear with the carriers and not the mold block sections.

Abstract: Molds for use in making end moldings for high-voltage cables are described wherein the dielectric insulator of a cable is heated and molded to conform to a desired shape. As a consequence, high quality substantially bubble-free cable connectors suitable for mating to premanufactured fittings are made.

Abstract: The apparatus comprises a frame having a die pivotally connected to it at one end and anchorage means pivotally connected to it at the other end. The anchorage means carries a first roller. A second roller is adjustable transverse to the frame. A pipe pusher is integral with the die. The frame has adjustable legs to set the angle of the fame. A plastic pipe is pulled through the die and through the host pipe and is bent between the first roller, the second roller and the die. The frame fully contains the reactions arising owing to the bending of the pipe.

Abstract: A mold apparatus has a plurality of sets of mold block parts which move to and from a product forming mold tunnel along the apparatus. Each set of mold block parts has at least one liquid receiving channel and a liquid supply is provided for supplying cooling liquid to the channel. The ends of the channel are open for feeding the cooling liquid into one end and draining the cooling liquid from the other end of the channel when the set of mold block parts is in the mold tunnel and seals are provided to prevent leakage of any cooling liquid trapped in the channel when the mold block parts are away from the mold tunnel.

Abstract: An oscillating hauloff device for removing blown film from an extruding apparatus. The oscillating hauloff includes a stacked ring arrangement which provides a compact and stable structure. The turning bars and idler rolls are encompassed in the ring structure and are arranged to cancel effects of web wandering and wrinkling. A method for making the oscillating hauloff, including CNC machining of annealed ring-shaped weldments, that is economical and simple to manufacture. The turning bars are provided with reinforcements that prevent deflection of the turning bars during use. Further the turning bars are provided with flow restricted outlets and axially extending channels to supply uniform air pressure to float the blown film on the turning bars. A specific arrangement for providing utility services to the oscillating hauloff is also disclosed which employs torsional deflection of the loads during rotation of the rings.

Abstract: A tipping device and processing for medical catheters, the device including a pneumatic mechanism, two fixtures controlled by the pneumatic mechanism to hold two opposite ends of the catheter, a nozzle controlled to heat or cool down the catheter, and hydraulic cylinder controlled to pull the catheter during the heating. When the front part of the catheter is heated and pulled, the outer diameter of the front part of the catheter is gradually reduced toward the middle, then the catheter is cooled down and removed from the device and then cut into a tapered tip.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port. Cooling water channels about sub-block end surfaces connect to water inlet and discharge ports for selectively circulating cooling water through the blocks.

Abstract: In a foil blowing apparatus, the distribution of singularity in the flattened foil tube over the length of a roll in which the tube is coiled are distributed by a fold shifting device above the squeezing rollers at the top of the foil blowing unit. The fold shifting device has three sets of pivotal planes each formed by a deflecting roller and a turning bar and oriented so that the maximum angle between each approaching stretch of the flattened tube and a perpendicular to the turning bar is 30.degree. and the maximum angle of each departing stretch and the perpendicular to the turning bar is 30.degree..

Abstract: The invention relates to a method for bending plastic pipes in which a plastic pipe section is heated at the bending point. The feature of the invention is that the pipe section (4) is first heated in a water bath at about 80.degree. C. and then laid around one or more bending plates (3), depending on the desired shape, whereupon the bending plates are subjected to a heat source (5), for example a hot air blower, and partially heated, depending on the pipe material used, to a maximum of 160.degree. C. for 10 to 15 seconds, whereafter the pipe section is subjected to a first cooling process from inside of the pipe using cold compressed air for 10 to 15 seconds. The pipe section is then placed in a cold water bath.

Abstract: A sizing tool for extruding plastic tubing is disclosed. The tool includes a peripheral wall having an inner surface that defines the outer dimension of a plastic tubing advancing from an extruder through the tool under influence of an internal pressure exceeding the pressure prevailing in the tool. The tool also includes a lubricating water channel system in the peripheral wall and extending along the tool length and having at least one opening communicating with the inner surface of said peripheral wall. The tool also includes a cooling medium channel system in the peripheral wall and extending along the length. The cooling medium channel system being substantially closed within the peripheral wall and being separate from the lubricating water channel system.

Abstract: An apparatus for the manufacturing of plastic pipes has half shells of which two at a time combine as a pair to form a mold. It is provided with a temperature-regulating bell. Supply lines are formed as flexible supply hoses of temperature-resistant plastic material. A line conduit accommodating them is provided with a protecting tube, which accommodates the supply hoses and which is provided with a heat insulation towards an injection head.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. A mold train drive engages a selected number of carriages at the beginning of the mold tunnel to continuously drive the carriages along the mold tunnel. A shuttle drive follows the continuous path through a shuttle area and spaced from the path along a substantial portion of the mold tunnel, and includes first and second carriage engaging sections at substantially opposite points along the drive so that a carriage at the end of the mold tunnel becomes engaged by one shuttle drive engaging section while the other shuttle drive engaging section engages a carriage at the beginning of the mold tunnel.

Abstract: A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section.

Abstract: A sizing device having a series of sets of sizing dies each composed of first and second die elements for use in extruding articles. Each die element is made of a plate having two opposite faces bounded by a peripheral edge. The edge further defines a notch through the plate. The notch in each die element has an open end extending inwardly to a closed end. The first and second die elements can be moved relative to each other from an open position in which the notches are unoccluded to a closed position in which first and second die elements overlie each other in the direction of extrusion and abut with the notches partly occluded by the abutting complementary die element. When the die is closed, the interior closed ends of the notches of the abutting elements of each die overlap to form a passage through the die that determines the shape of the extrusion. Support structure maintains the series of die sets at spaced apart locations in a vacuum extrusion chamber.

Abstract: Method of manufacturing a dental aspirator by extruding a continuous tube with a bellows portion. The tube is angled to form a number of folds, each of which consists of two cup-shaped portions having concave surfaces facing each other. One cup-shaped portion is made smaller than the other, allowing them to be snapped together. The bellows are formed from the tube wall by chilled mold chains. At the same time, the tube is profiled to form an end portion at the suction end of the finished aspirator.

Abstract: A method and apparatus for shaping the center space of toilet rolls by inserting a shaping core into each end of the center space, and then withdrawing the cores. The diameter of each shaping core decreases toward the front end of the core.

Abstract: An apparatus for preforming a main body of a racket frame from a softened fiber reinforced thermoplastic resin composite tube includes an inner mold which has a base with a flat face that has an X axis and a Y axis perpendicular to the X axis. The inner mold further has a protrusion projecting from the flat face. The protrusion has an outer periphery which conforms with a contour of a racket frame and which confines a head-like portion and a shaft-like portion along the Y axis. A pressing unit for pressing the composite tube against the outer periphery includes a frame reciprocatable along the Y axis by means of a driving unit, two support members disposed opposite to each other and fixed respectively to the movable frame, two rolls mounted respectively to the support members, and a biasing unit for biasing each roll to press the composite tube against the outer periphery. An outer mold has two opposite halves disposed on two sides of the inner mold and movable along the X axis by means of a moving unit.

Abstract: A method for manufacturing a curved rubber pipe is provided with a guide member (3) arranged concentrically with a mandrel (2, 402). A straight rubber semi-finished product (4) of an unvulcanized or semi-vulcanized rubber is inserted into the guide member (3). A die lubricant can be applied only to the inside of the rubber semi-finished product (4) over its whole length. The rubber semi-finished product (4) is fitted on the mandrel (2, 402) by pushing the product by a head (7) mounted on a leading end of an arm (6). One end of the curved rubber pipe (1) is gripped after vulcanizing by a gripping member (10) and is extracted from the mandrel (2, 402). By this method, it is possible to fit and smoothly extract the rubber semi-finished product (4). The method can also easily be automated.

Abstract: A method and apparatus for expanding a replacement thermoplastic pipe installed within an existing conduit is provided. A pipe expansion apparatus having a flexible substantially cylindrical bladder and a relief valve to inflate the bladder to a predetermined gauge pressure and allow fluid to exit the expansion apparatus and fill and pressurize the area behind the apparatus is inserted within the collapsed pipe. Fluid, such as cold water, is introduced into the apparatus to inflate the inflatable section to conform substantially to the interior diameter and configuration of the existing conduit. As the area behind the expander fills with pressurized fluid, the expansion apparatus is pushed forward, thereby pushing and expanding the replacement pipe up against the interior of the existing conduit. Steam is injected ahead of the apparatus to maintain the replacement pipe in a heated flexible condition.

Abstract: A method for making an optical fiber bundle which, in one aspect, includes bending each of a plurality of optical fibers to form a bend therein and then suspending the fibers over a suspension member; holding the fibers taut under tension; applying potting material to the fiber bends and curing it; and removing the fibers from the suspension member.

Abstract: An apparatus for the manufacture of pipes having transverse profile features has a machine bed, on which half shells, which can be combined to form a mold, are rotatably and displaceably drivable. The half shells are pressed together on a molding path by guide rails, of which one is displaceable at right angles to the direction of production by hydraulically actuatable drives. Interlockings may be provided in addition, a locking member of which engaging with an associated locking recess.

Abstract: A cold form flaring tool that includes first and second mandrel tips each having the shape of a half conical frustum that includes a base with a base radius and a narrow end with a radius that is less than the base radius. The first and second mandrel tips together form a conical frustum when in a closed position and are insertable in a tubing end when in the closed position. The first and second mandrel tips are expanded outwardly away from each other by pivotally interconnected levers which support the mandrel tips in such a manner that the respective narrow ends of the mandrel tips move outwardly at a greater rate than their respective bases, which retains the mandrel tips in the tubing end while being expanded.

Abstract: This invention relates to the use of a flexible, heat resistant mold member. The mold member is useful in molding processes such as dip or slush molding. The mold member maintains its structural integrity and may therefore be used as an insert in the article being molded to provide flexible stability at specific locations within the article. The mold member is made of a material which is substantially non-reactive with the molded article. The molded article may be any article made from a plastisol such as a binaural for a stethoscope having single or double lumens.

Abstract: A heat stake press apparatus is described for fixing a connecter to a circuit board by heat staking pegs of the connector, which facilitates alignment of the circuit board holes with forming tips in a low cost press. A pair of aligners (110, 112, FIG. 6 ) is provided that are each mounted at a forward edge of the board in alignment with a peg hole (22) of the board. The board is mounted on support guides (62, 64) of the press, and the board is slid forwardly until a pair of forming tips (52) are received in slots (124) of the aligners to sidewardly align the board. The support guides are then moved sidewardly so board guide pins (74A, 76A, FIG. 2 ) move against side edges (80, 82) of the board. Thereafter, the aligners are removed, a connector (14) is placed on the board with its pegs projecting down through the board holes, and the board is again placed in the press on the support guides.

Abstract: An oscillating hauloff device for removing blown film from an extruding apparatus. The oscillating hauloff includes a stacked ring arrangement which provides a compact and stable structure. The turning bars and idler rolls are encompassed in the ring structure and are arranged to cancel effects of web wandering and wrinkling. A method for making the oscillating hauloff, including CNC machining of annealed ring-shaped weldments, that is economical and simple to manufacture. The turning bars are provided with reinforcements that prevent deflection of the turning bars during use. Further the turning bars are provided with flow restricted outlets and axially extending channels to supply uniform air pressure to float the blown film on the turning bars. A specific arrangement for providing utility services to the oscillating hauloff is also disclosed which employs torsional deflection of the loads during rotation of the rings.

Abstract: A mandrel for making a rigid tubular article that has integrally-formed straight and arcuate portions. The mandrel has a plurality of shape-providing elements slidably disposed on interconnected straight and arcuate rods. After a rigid tubular article has been formed about the mandrel, the shape-providing elements can be slid off the straight and arcuate rods so that the mandrel can be removed from the rigid tubular article's interior. This provides for easy separation of the mandrel from the tubular article.

Abstract: A portable device for straightening out pipes including a hollow beam provided at its two ends with first and second movable bearing members, respectively, one of which or first movable bearing member is actuated by a jack housed within the hollow beam whereas a grip for handling the device is transversely and adjustably mounted on the beam between the first and second movable bearing members and carries a third movable bearing member, the device being applicable in particular for straightening out polyethylene tubes to be assembled end to end.

Abstract: An extruding device for extruding plastic tubing includes an extruder with an outlet and a cooling device connected to the outlet of the extruder. The cooling device has a water-filled chamber and a vacuum tank that is directly connected downstream to the water-filled chamber such that a sealed passage for the plastic tubing between the water-filled chamber and the vacuum tank is provided. The water-filled chamber has a water-filled cooling part and a water-filled measuring part. A water- and vacuum-conveying connection is provided between the measuring part and the vacuum tank. A calibrating sleeve with an inner wall surface is connected within the cooling part and is completely immersed in water for cooling purposes. The calibrating sleeve pulls the extruded plastic tubing against its inner wall surface. A measuring device for measuring the wall thickness of the plastic tubing is connected with the measuring part.

Abstract: An optical coupler using round optical fibers whose ends have been formed into a predefined shape to allow greater physical packing densities in order to achieve greater uniform illumination efficiency. The interstitial space between optical fibers is greatly reduced by thermoforming the ends of round optical fibers in a mold that makes a gradual transition from a circular shape to the predefined shape to avoid optical loss. Since the change in shape is gradual, the total cross-sectional area of the fibers remains constant; and optical loss is minimal because there is no reduction in mode volume. The predefined shape may be substantially square or rectangular. The core and cladding materials of the optical fiber are carefully chosen with respect to the glass transition state temperatures of both materials because the temperature at which the materials are formed by a mold are slightly above the glass transition state of the core or cladding, whichever is higher.

Abstract: A method producing deformed pipe liners from continuously extruded thermoplastic material by collapsing and bending deformable portions of the tube toward a back-up portion thereof and without elongation to maintain diameter and wall thickness, and apparatus to carry out said method and characterized by at least one back-up roller and at least one shaping roller folding the deformable portion along a line of symmetry and juxtaposing a fold of the tube to the back-up portion, all at raised temperature followed by reduced temperature on a rail conforming to the deformed tube configuration.

Abstract: A shutter door assembly assembled primarily from extruded plastic components is provided. The shutter door assembly includes an outer rectangular frame surrounding a pivotally attached vaned panel door. Various side, top, and bottom legs of the frame and door are constructed of a hollow extruded plastic and are securely mounted together to form a rigid, durable shutter door. The resulting shutter door has the general look and feel of an actual wooden door. An after-former device for forming extruded tubes for use in the shutter assembly is also provided. The after-former system mounts to a standard circular extrusion head, and converts a circular tube of extrudant to a desired noncircular shape, such as a rectangular shape. The after-former has a conical conduit, with an entrance aperture having a circular shape for receiving the initial extrudant and an exit aperture having the desired noncircular cross-section.

Abstract: A hot compacting device for producing a part, whose production requires raising the pressure and temperature simultaneously, is provided. A device made according to the present invention includes a heating mold for receiving a blank of the part to be produced and compacting element for pressing the blank against the heating mold. The compacting element includes a compacting bag for pressing the blank against the mold and an anti-convection zone for containing a pressurized fluid in the vapor state, which anti-convection zone is interposed between the compacting bag and a semi-permeable wall, which wall is impermeable to the fluid in the liquid state but is permeable thereto in the vapor state. Also provided is a supply zone for receiving the fluid in the liquid state, which supply zone is located on a side of the semi-permeable wall located opposite the anti-convection zone.

Abstract: An apparatus for continuously winding a length of material into a helical form includes a frame structure and a plurality of rollers mounted on the frame structure. Each roller has a non-grooved surface with portions of a different diameter, a longitudinal axis and oppositely positioned first and second ends, and the plurality of rollers are arranged about a winder axis in a substantially circular fashion. The rollers are individually rotatably driven and the first and second ends of each roller are offset with respect to one another as viewed from one end of the respective roller along a line parallel to the winder axis and passing through the longitudinal axis of the respective roller at the one end of the respective roller. The method includes continuously feeding a length material onto a plurality of rollers that are arranged in a substantially cylindrical manner about a winder axis so that the outer surfaces of the rollers define a cylindrical winder surface about which the material is to be wound.

Abstract: In bending rods reinforced with continuous fibers, buckling or stretching of reinforcing fibers is reduced by conforming the continuous fibers to a helical configuration within the rods before or when the rods are bent. The helical configuration causes fibers near the surface of the rod to travel substantially the same distance when the rod is bent whether the fibers are on the inside radius or the outside radius of the bend.

Abstract: An apparatus for deforming a pipe includes a boxed structure having an entry and exit for the pipe. The boxed structure acts as a constraint on a peripheral of the pipe along a path of movement thereof. An elongate wedge member depends inwardly from the boxed structure and is arranged in use to lie alongside the path of movement of the pipe and to project increasingly into the pipe as the pipe moves past the wedge member in a forward direction in the path of movement. The pipe to be deformed in the path of movement is engaged progressively increasingly by the wedge member whereby to indent progressively a part of the peripheral wall of the pipe such to deform the pipe longitudinally in the path of movement with the pipe through the boxed structure.

Abstract: An extrusion calibrating apparatus connectable to external sources of cooling water and vacuum, and usable to calibrate the exterior profile of a hollow thermal plastic extrusion. The apparatus includes lower and upper cover plates each having a pair of vacuum manifolds therein, the lower cover plate being fixedly attachable to a stationary support. The apparatus further includes lower and upper vacuum plates each having a plurality of vacuum slots extending between a lower and an upper side thereof and in communication with a corresponding vacuum manifold. Each of the vacuum plates also has supply and return water channels providing communication between spaced-apart interior supply and return ports on an inward side thereof. A heat-conducting calibrating insert is removably positioned within an interior chamber between the vacuum plates with lower and upper sides in face-to-face juxtaposition with corresponding inward sides of the vacuum plates.

Abstract: An apparatus is reported for shaping an end of a solid cosmetic stick such as a deodorant or antiperspirant. The apparatus operates through a method that includes the steps of filling a package body with a molten cosmetic composition, solidifying the composition into stick form, heating a mold or package cap, elevating the stick to extend the package body opening, and contacting an end portion of the stick with the heated die or cap. A pattern such as a trademark or logo may be molded through this process onto the end portion of the stick.