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: An apparatus and method are disclosed for crimping, pleating and forming a tip on a hollow tube. The apparatus includes a first punch having a tubular section sized to receive the tube and having a configured tip with a plurality of elongated grooves formed therein. The first punch also contains a shoulder formed at an opposite end of the tubular section which acts as a stop for the tube. The first punch and tube are mateable with a first die. The first die includes a base having a plurality of blades extending axially outward therefrom. Each blade is designed to engage with one of the grooves formed on the first punch and causes the tip of the tube to be crimped therebetween. After an end of the tube has been crimped, it is transformed into a plurality of pleats and configured into a semi-spherically shaped tip having a central aperture formed therethrough. This is accomplished using a second punch having a tubular section sized to receive the tube.

Abstract: The present invention provides novel apparatus and a novel method for manufacturing an endless rubber track for large vehicles such as tractors or earth-moving machines. A plurality of sprocket-engaging core bar inserts are disposed in the inner portion or inner diameter of the endless rubber track to engage the power drive mechanism of the vehicle. Rubber tread is disposed on the outer portion or external diameter of the rubber track. Although the rubber track is made in segments, it is completely vulcanized, and does not have discontinuous, unvulcanized regions between vulcanized segments. Rubber track is formed using at least two different mold assemblies. In the first mold assembly, the interior and exterior portions of the rubber track are molded onto a green belt to form a first segment, and a central portion of the segment is vulcanized.

Abstract: An impact resistant film suitable for medical solution pouches and the packaging of parenteral materials generally includes an interior layer of an ethylene vinyl acetate copolymer and outer layers of a propylene homopolymer or copolymer blended with a styrene ethylene butylene styrene copolymer. In some cases, a flexible copolyester may be substituted for one of the outer blend materials. Sacrificial layers may be optionally be included on one or both outer surfaces of the film to improve processing.

Abstract: An apparatus for curing a sheet molding compound which comprises at least one pair of molds disposed along a path of transport of the sheet molding compound. The molds defines a cavity therebetween for passage of the sheet molding compound, which has been generally semi- cured and shaped by a shaping apparatus to a predetermined shape, to heat the generally semi-cured sheet molding compound. At least one of the molds is in the form of a movable mold effective to vary a cross-sectional shape of the cavity to follow a thermal expansion and shrinkage which take place in the sheet molding compound during a curing process.

Abstract: In order to produce multilayer structures of composite materials by draping recut elementary layers on a shaping mold, an installation is proposed which comprises, apart from the mold, a gripping tool which can e.g. be fitted on the articulated arm of a robot. The shaping mold comprises a flexible membrane equipped with suction cups ensuring the gripping of the elementary precut layers. A vacuum circuit makes it possible to engage the membrane on a countermold placed behind the latter in order to shape the grasped elementary layer. When the tool is brought onto the mold, a pressure source acts on the membrane in order to compact the elementary later on the mold. A suction system keeps the layer on the mold following the release of the suction by the cups.

Abstract: A description is given of an apparatus for forming and deep-drawing the neck region at the edge of a plastics half shell, having a deep-drawing tool (3) and a counter-pressure plate (2) which are movable in two directions relative to each other, wherein the deep-drawing tool (3) embraces a deep-drawing cavity (29) in shell-like manner and has a recess (30) in the side wall (31) at the edge (32). So that deformation of the collar at the edge of the plastics half shell and also over-heating of the plastics plate for forming the half shell are avoided, according to the invention it is provided that the counter-pressure plate (2) has at least one opening (16) in the contact face (17) facing the deep-drawing tool.

Abstract: In the production of various kinds of pastry it is actual to effect a folding-over of wing portions of flat dough members, such that these portions are folded down over some stuffing deposited e.g. on a middle area of the dough member. While this is easily done manually, it has been very difficult to automatize the operation, but according to the invention this is achieved in a very simple and efficient manner. A rubber resilient shaping plate (8) is used, which, through foldable areas (12), is connected with projecting wing portions (10) each associated with a depending rubber rod (16). At their lower ends these rods are rigidly attached to an actuator plate (18), which, in being raised relative to the shaping plate (8), urges the rubber rods upwardly for folding the wing portions (19) up- and inwardly.

Abstract: Apparatus for folding a dough leaf 30 about a filling 32 comprises a series of folding pans 26.1 to 26.6. Each folding pan is foldable with respect to the next pan in the series about a folding axis 28.1 to 28.5, and is provided with a weighted plunger 34 which is connected to the folding pan by a lost motion connection. The weighted plunger serves to hold the dough leaf down while the pan is displaced from the folded position back towards the unfolded position, to prevent the dough from sticking to the pan.

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: Apparatus for mechanically forming a random rake finish on the surface of a cast panel utilizes counter rotating sets of tines which are projected into the material as a form is linearly moved. The apparatus thus is used to implement a unique method of providing a random rake or fuzzy finish on the surface of the cast panel.

Abstract: An apparatus for collapsing and folding an upright container to a compact stackable configuration, the container having a bottom wall, peripheral side wall with at least upper, lower and intermediate annular stepped portions in the peripheral side wall, and a top wall having a discharge opening therein, includes tooling for supporting and holding the container in an upright position; a first forming element for engaging and exerting a downward force on the intermediate annular stepped portion of the peripheral side wall and for effecting the formation of a first folded portion in the peripheral side wall; and a second forming element for engaging and exerting a downward force on the top wall for effecting the formation of a second folded portion in the peripheral side wall, substantially concentric with and radially adjacent the first folded portion.

Abstract: In a method and apparatus for formation of an extruded product from material containing fibrous, molecules or other constituents succeptable to alignment, while the extrudate is still molten and moving through the die (5), in the direction of the extrusion axis (11), it is subjected to pulsating displacements in a direction transverse relative to that axis. These displacements give rise to a shearing action within the material, resulting in a degree of transverse orientation of the constituents. This orientation may be "locked in" to the extruded product when the melt solidifies (40), so improving the transverse strength of that product, and/or may correct an unwanted orientation (from 112, FIG. 16) that existed in the melt upstream of the point where the pulsating displacements were applied. The displacements may be applied by the synchronized operation of pistons (20-27), operating in chambers (17) which open into the die cavity (18) at separated locations all lying in the same transverse plane.

Abstract: The invention relates to an apparatus for adjusting the length of dough strands, comprising a receiving gutter, V-shaped in cross-section, whose walls are defined by elements which engage a dough strand placed in the gutter at regularly spaced apart locations along the length of the dough strand and can exert axial forces thereon. According to the invention, the elements which define the walls of the receiving gutter and engage the dough strands are formed by rolling members arranged with interspaces and adapted to be driven progressively and selectively from the middle (X--X) of the gutter in either direction, and support members which convey the strands transversely of the gutter are arranged between the rolling members. The mutual arrangement of the gutter and of the support members is variable, at least as to the relative level.

Abstract: Apparatus for deforming a pipe liner having a frame including an entry and an exit for the pipe liner passing through the frame and slidably adjustable discs and cylinders which cooperate to deform a pipe liner disposed intermediate the entry and exit, of the frame. The apparatus also includes a system of blocks, guide rods, and a chain assembly which regulate the deforming position of the discs and cylinders.

Abstract: A process and apparatus for the manufacture of a pleated filter insert made of a thermoplastic material. The pleat walls are maintained at a distance with the filter pleats open in the direction of outflow of the filter insert by elongated ribs made of the filter material itself. The tape-like filter material is gathered in a first process step. The elongated ribs are produced by means of tension-free, permanent shaping of the gathered filter material, heated to a temperature which is below the shrinking temperature and above the deformation temperature of the filter material, between the jaws of a shaping device. The intermediate areas of the filter material intended for the forming of pleat wall edges are heated by at least one heater jaw to a temperature which is between the deformation temperature and the melting temperature until the irregularities of the filter material in the intermediate area have been smoothed out.

Abstract: A cylindrical product, such as a hollow tube or solid rod, is subjected to a series of manufacturing processes. The cylindrical product is moved longitudinally through a sequence of stages, each stage having an opening through which the cylindrical product passes. The plurality of stages are arranged in a series to perform a specific rheological process. Each stage includes means for applying a preselected temperature, pressure, and vibration to the cylindrical product.

Abstract: An apparatus for corrugating a flexible web containing heat softenable fibers comprising two pairs of endless drive chains with paddles mounted to each pair of chains to extend radially outward therefrom. The web is introduced onto the paddles at a point where the paddles are fanned out by passage of the paddles about the arcuate end of the endless chains. The web is folded between the paddles as the separation between the paddles is closed when the paddles move from the arcuate to the straight portion of the endless chains. Heating means soften and bond fibers of adjacent folds of the web together prior to removal of the corrugated web from the paddles.

Abstract: A hot press device has a pair of hot press rollers for heating and pressing a treatment object therebetween while rotating, and pairs of delivery rollers are arranged before and after the pair of hot press rollers. The treatment object passes back and forth through the pair of hot press rollers, and a controller controls the delivery rollers so that the circumferential speeds of the respective delivery rollers located downstream in the forward or reverse passing direction of the treatment object can be increased.

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 juxt posing 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: The invention relates to an apparatus for the continuous production of pipes with cross-profiled walls from a pipe strand of thermoplastic plastic emerging in still plastic state from an extrusion nozzle.

Abstract: An apparatus for continuously and rapidly forming petal-like segments at the tip of a tampon inserter into a hemispherically curved shape. Sets of molds are mounted on a support table on a rotary table turned about a shaft. Each set comprises a heating mold to heat and soften the tip of the tampon inserter and a cooling mold to shape while being cooled the heated and softened tip. The heating and cooling molds are moved by a cam so that either of the two molds is placed above the tampon inserter held in position by a gripper. The gripper comprises a pair of gripper segments that are opened and closed by a cam on the shaft and raised and lowered by another cam on the same shaft. The cams are adapted to release the tampon inserter from the gripper after the tampon inserter has been put first in the heating mold and then in the cooling mold. The tip of the tampon inserter held by the gripper first enters the heating mold to get heated.

Abstract: A process for embossing both sides of a sheet of thermoplastic material comprises sequentially passing the sheet between two pair of embossing-counter rollers at controlled relative conditions of temperature and pressure.

Abstract: The invention relates to a device for the positive drawing to great lengths of lumps of dough already pre-lengthened. This device is inserted between the shaper-lengthener and the chute in the automatic sequence of the different phases of treatment of an industrial manufacturing line for long loaves.This device is characterized by having a turning group formed of a drive shaft driving in rotation, two series of discs diverging either side of the median plane and whose volume determines a drum, this turning group being subject to a continuous movement of rotation, and taking in the pre-lengthened lumps of dough and giving them back drawn after a trajectory of approximately a semicircle across a partial annular space making them roll against a fixed shell.The invention concerns installations for the automatic shaping of long loaves.

Abstract: A press for forming sheet material into a shaped article comprising a frame, first and second complementary dies, a cam supported by the frame for reciprocally moving the first die along an axis between a first position axially spaced from the second die and a second position fully mated with the second die, the cam including a dwell period when the first die is in the second position. The press includes a bolster supporting the second die for axial movement between upper and lower limits, the bolster being axially spaced from the upper limit by movement of the first die to the second position. The press also includes a hydraulic power circuit responsive to the position of the cam for normally biasing the bolster toward its upper limit under a first hydraulic pressure and for biasing the bolster toward the upper limit under a second hydraulic pressure during the dwell period, the second hydraulic pressure being greater than the first hydraulic pressure.

Abstract: A curing mold for curing glass fiber pipe insulation contains alternating positive and negative pressure zones and hot curing gases are introduced to the glass fibers during advancement through the positive pressure zones, and the curing gases are exhausted from elongated exhaust openings in the mold during advancement through the negative pressure zones, and the exhaust openings are cleaned without interrupting the advancement of the glass fibers through the curing mold.

Abstract: A method and apparatus are disclosed for holding and feeding a continuous sheet (12) of plastic in an operation such as thermoforming. Articulations (13), such as alternating waveforms, are formed on the edges of the plastic sheet (12) by heating and pressing the edges, producing inwardly facing abutment surface at the edges of the sheet. The sheet is then passed into slots (34) in guide rails (32) with the inside surfaces (35) of the guide rails (32) engaging the abutment surfaces on the plastic sheet (12) to prevent the sheet from slipping out of the guide rails. The plastic sheet is thereby held firmly so that it can be passed through such thermoforming operations as heating in an oven (14), forming with a mold at a forming station (40), and cutting the formed articles away from the remainder of the sheet by a trim press (53).

Abstract: This invention relates to a machine for and a method of making building products from a coiled sheet of thermoplastic polymer such as polyvinyl chloride. In the practice of this invention, portions of the polymeric sheet are selectively and sequentially heated and progressively bent to the desired shape by passing the sheet through a series of heating, forming and cooling stations.The simplified design of the machine enables the user to custom fabricate building products at a construction site with a resulting savings in cost. Typical products adapted to be made in accordance with the invention are exterior building siding, siding accessories and other building products.

Abstract: A feeding apparatus in pressing machine which performs sequential predetermined pressing operations on a workpiece at two or more working positions spaced by given intervals, which includes a holder means provided in such a manner that it can be reciprocated between adjacent working positions a suction means that is held by said holder means and which stops applying suction to the workpiece at one of said working positions, and a pivoting mechanism for pivoting said holder means to a position where it does not interfere with the pressing operation of said pressing machine, the workpiece under suction of the suction means at one working position being sent to the next working position by the movement of the holder means and retracted to said non-interfering position by pivoting said holder means after said suction means stops applying suction to the workpiece and before the pressing machine starts to operate.

Abstract: Apparatus for vacuum molding a plurality of three dimensional geometrical shapes in a thermoplastic polymeric sheet having a molding plate, the surface of which has a plurality of three dimensional geometrical shapes, with said molding plate having an enclosing border, a molding face and a non-molding face; a gas orifice extending through the molding plate so that a gas can flow from one face of the molding plate to the other face; a mechanism to move the molding plate along a predetermined path; a mechanism to maintain a thermoplastic polymeric sheet, heated to a plastic condition, adjoining the moving molding plate molding face; a mechanism to releasably seal the heated polymeric sheet to and all around the molding plate border; a vacuum source to remove gas, from between the heated polymeric sheet and the molding face of the molding plate, through the gas orifice whereby exterior pressure can force the heated sheet against the molding face surface; and a mechanism for removing the molded sheet, after it co

Abstract: In the manufacture of a moisture-permeable covering film for absorbent material a thermoplastic film is provided with capillary-like protrusions by embossing, after which openings are produced in the ends of said protrusions. Embossing is effected with simultaneous cooling of the film, so that the ends of the protrusions are oriented in the thermo-elastic temperature range. By a renewed heating of the ends of the protrusions the openings are formed by shrinking, which also causes the edges of the openings to be thickened.The apparatus consists of an engraved metal cylinder and a counter-roller for the embossing step and of a heated roller, which is pressed against the ends of the embossed protrusions on the metal cylinder.

Abstract: Dough-dividing and forming apparatus particularly adapted for forming toroid-shaped articles such as bagels, or the like, is disclosed. A first rotary plate member containing a plurality of cylindrical openings receives a cylindical ribbon of dough into the openings and shears the dough into disc-shaped dough lumps. The dough lumps are subsequently flattened in the center to form a web and pierced to form a generally annular shape. During the piercing operation, the dough lumps are transferred to a second rotary plate member carrying a plurality of tapered, cylindrical forming cups. As the second plate member is indexed between rotary positions, a plurality of cylindrical mandrels are repeatedly thrust into and out of the forming cups to roll the dough lumps internally along the length of the forming cups whereby the desired shape is formed.

Abstract: Apparatus for splicing ends of a sheave insert material in which the ends of a premeasured length of an elastic, thermoset sheave insert material are laminated together in a special splicing jig for fabricating a unitized insert loop, which is subsequently stretched around a sheave into a preformed insert receiving slot along the circumference thereof. The jig holds the ends of the premeasured length of insert material in alignment as a heated mold, included therein, fits snugly around the ends and applies heat to the joint therebetween, into which the insert material, in liquid form, has been inserted to join the ends. The heat thus applied to the joint accelerates the curing of the liquid into the same consistency as the insert; thereby producing a unitized bond between the ends by which the unitized loop is thus formed.

Abstract: A tray-like container of a plastic coated paper blank having a base panel, which has four or more even numbers of side edges, side walls, corner portions, a peripheral portion extending along side walls and corner portions, and a pig-tail like folding line formed in each corner portion of the peripheral portion, of which a flange of the tray-like container is formed. The pig-tail like folding line assists in the outward bending of the peripheral portion so that it forms the outwardly projecting flange of the tray-like container. The outer shape of the tray-like container is forcedly molded by a movable and stationary complementary moulds.