Abstract: With the described method, fibrous compression molded articles are produced and the material components to be used are prepared in a suitable ratio and are deposited positively to form relief-like molded article blanks. The blanks are subjected to a heat treatment for condensation of the binding agent and are set in a parison mold into parison blanks, before they are fed to a compression mold. An especially suitable depositing device for this method for formation of the molded article blank is connected in one preferred embodiment with a carousel-like feed table and a governing device with which a plurality of compression molds can be charged and utilized optimally.

Abstract: In a first forming stage, the bottom portion of a mono-molded plastic syringe (a type wherein the whole portion, i.e., a main syringe body and a needle portion, is molded unitedly in a cast) is heated and then stretched to a certain length, forming the edge portion like a needle, while the syringe is intermittently moved. Then the sryinge is carried to a second forming stage, where the syringe is moved intermittently and the needle portion is heated, then it is bent at a certain angle and is cut in a certain length, forming a completed syringe.

Abstract: A dough-based product is formed by a machine which has a reciprocable punch die and cutter fitted to the die positioned above an upper run of a conveyor, the die having a centrally disposed die surface which extends to a peripheral die surface channel positioned adjacent the cutter. The machine also has at least one set of a plurality of rollers, which are positioned beneath the conveyor upper run and arranged on a rotatable disc so that the at least one set forms a spiral configuration so that when the punch die reciprocates towards a dough product transported by the upper run, the dough product is pressed, formed and cut by the punch die and cutter, in cooperation with the rollers, into pieces having a thickened rim.

Abstract: A composite mold that facilitates the fabrication, in a single curing step, of composite articles having opposing sets of stiffening members disposed in combination with a main structural panel. The composite mold provides for simultaneous co-curing of the opposed stiffening members in combination with the main structural panel. The composite mold includes a rigid mold assembly and a "T" mold assembly, which, in combination, define a rigid lay-up surface for the prepreg laminates forming the main structural panel. The rigid mold assembly includes rigid members that act as reactive surfaces for cure pressures, and removable end and wedge members for assembling/disassembling of the rigid mold assembly, "T" mold assembly combination. The "T" mold assembly is operative during the cure process to generate the pressure required to cure the legs of one set of the stiffening members.

Abstract: A mold, adapted for resin transfer molding of composite articles, that has a seal for maintaining a vacuum resulting in denser composite parts. A mold body has at least two openings including an opening for removing the article therethrough. There are at least two mold closures adapted for closing the openings and two of the mold closures are in mutual contact within the interior of the mold. A seal is disposed between each closure and the mold body for sealing each mold closure to the mold body to continuously seal only a single surface. The mold has an improved seal for initiating and maintaining a vacuum thus reducing part porosity.

Abstract: A machine for forming a pizza shell from a dough mass has a vertically reciprocable pressing head positioned above a base plate. Positioned around the circumference of the pressing head are a plurality of spaced fingers capable of reciprocating vertically and laterally. The lower ends of the fingers are adapted to press against the border of a pizza shell on the base plate to imitate manual fingertip pressure.

Abstract: A press for the production of pressed board with injection of steam utilizes press platens to which the steam is fed to the steam-feed channels from opposite sides in a collision flow, the chanels communicating with steam-nozzle bores opening at the pressing surface and such that the cross section of each channel is equal to at least 60% of the total flow cross sections of the boards communicating with that channel. Before the pressing commences, the channels are through-flushed with steam to flush air from the channels and bores and to evacuate air from the pressed mat by a venturi effect.

Abstract: An apparatus for bending a laminated thermoplastic sheet without displacing the lamina relative to one another includes a clamp which functions to hold the sheet during the bending procedure. A support is disposed adjacent the clamp and has a curved surface for forming a bend in the sheet and a flat surface which constitutes an abutment for the part of the sheet being bent. The support is adjustable to vary the angle of bending. A bending device for the sheet comprises a carriage having a bending roller, and a ram whose size approximates that of the flat abutment surface. The sheet is clamped with a portion thereof projecting freely above the flat abutment surface and heated. The bending roller thereupon forces the sheet against the curved surface to bend the sheet and then moves across the projecting portion of the sheet to urge such portion into engagement with the flat abutment surface.

Abstract: A plastics threaded fitting molding mechanism, which is aimed to resolve the conventional problem limited only to produce single direction threads, utilizes three pushing rods and corresponding co-axially disposed therein, performing reciprocating movement, to make the three ways plastics threaded fitting. Therefore, it is substantial to save time and labor while reducing manufacturing cost.

Abstract: A reconfigurable fiber-forming resin transfer molding system including a sealed chamber with first and second spaced flexible diaphragms for holding a fiber workpiece and press and die mold surfaces for forming the fiber workpiece.

Abstract: An apparatus for thermoforming a polypropylene band by heating plates located upstream of a pressing station where transverse rows of blisters are made on a band by a die. A striker device is located at the outlet of the pressing station and is operated in phase relationship with the advancement of the band, after every pressing stage. A plurality of pins, which are borne by a movable bar, are moved towards the band to intercept, when the die is closed, a transverse row of blisters of the band, and to prevent any sliding of a portion of the band still to be formed.

Abstract: A composite-material structure of T-shaped cross section has a horizontal plate and an integral vertical web. The vertical web is formed between opposite forming faces of die members, and the horizontal plate is formed between the die members and a horizontal pressing plate positioned above or below the die members. In order to urge the die members against each other for forming, wedges are provided. The die members, pressing plate and wedges are placed between a lower stationary part and an upper movable part of a pressing machine. When the movable part descends towards the stationary part, the wedges exert forces to the die members to urge the members toward each other due to a wedge action, and the pressing plate is vertically urged against the die members.

Abstract: A method for stamping a monofilament between a pair of mating stamping rollers to form shaped portions for slide fastener coupling elements includes using an annular outer roller and a cylindrical inner roller with pressing projections on a mating stamping surface of at least one of the rollers. The rollers are positioned in such an arrangement that an outer circumferential surface of the cylindrical inner roller mates partially with an inner circumferential surface of the annular outer roller. The rollers are rotated in a common direction, and monofilament is supplied continuously to an area where an inner circumferential surface of the annular outer roller and an outer circumferential surface of the cylindrical inner roller mate. The monofilament is thereby pressed for a longer time in order to form accurately coupling head portions of slide fasteners.

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: A process for continuously and progressively forming components from fiber-containing composite material workpieces having a deformable matrix introduces transverse bends into a workpiece that moves through the apparatus in a longitudinal or travel direction. Transverse bending of the composite material is accomplished in a kinematically admissible manner to avoid misalignment or failure of the composite material. A net bending deformation is introduced at a free transverse edge as the composite workpiece moves in a longitudinal direction, by pairs of compound roller elements between which the workpiece passes as it moves through the apparatus. The net deformation introduced at the free transverse edge is moved and distributed through the composite material workpiece during successive passes through the forming machinery, to form the final shaped component.

Abstract: A dough forming die assembly for the manufacture of machine-made pizza crusts in cooperation with a pizza pan having a generally circular central portion surrounded by upwardly sloping walls joining a horizontal rim. The dough forming die is mounted to a vertically movable base and provided with a generally planar face portion having a surrounding recessed rim. The outer wall of said rim is provided with a downwardly extending thin lip adapted to engage the upper portion of said sloping walls of said pan. A cylindrical, ring-shaped sealing member is mounted to the base for limited slidable movement relative to said die between a raised position and a lowered position engaging said pan and slideably engages the outer wall of said rim.

Abstract: An apparatus for processing unvulcanized rubber utilizing intermeshing grooved rollers. To obtain rubber material having an optimally jagged surface, at least the cutting disks of one of the grooved rollers are additionally provided with teeth.

Abstract: An apparatus for forming a return flange on the belt trim portion of a vehicle door panel includes a door panel support with a movable backing member to back a belt trim portion when the panel is clamped in place. The apparatus further includes a heater mechanism and a flange former mechanism on the machine which are sequentially advanced with respect to the clamped door panel to soften a thermoformable segment of the panel which is folded about the back-up plate.

Abstract: A rollout apparatus for rolling trapped air from a resin impregnated fiber mat has two carriage assemblies mounted for reciprocated movement in opposite direction. Each of the carriage assemblies carries depending rollers that engage an impregnated fiberglass mat laid on a mold. The carriage assemblies oscillate simultaneously in opposite directions so that the turning forces generated by the receiprocation cancel each other, thus providing a smooth vibration-free mechanism.

Abstract: A mold die includes a hexagonal base having six sides and six vertices disposed around an axis, and a tetrahedron having an apex aligned with the axis of the base. The base is integrated with the tetrahedron to form three congruent parallelogram walls, one vertex of each parallelogram wall being coincident with the apex of the tetrahedron, the other three vertices of each parallelogram wall being aligned with respective vertices of the base. The die further includes slots extending into the parallelogram walls parallel to the axis of the base. The die forms a tetrahexagonal walled cavity of a truss structure corresponding to the shape of the die, whereas the slots form perpendicular walls which structurally interconnect the apices of adjacent cavities and increase the rigidity of the truss structure.

Abstract: A method of making a high load tool having a hard body of plastic material with compression plates on opposites sides to compress and strengthen the body. The method includes the steps of inserting passage forming pipes into a container and retaining the passage forming pipes in predetermined locations. Epoxy resin is poured into the container to cover the passage forming pipes and then the epoxy resin is cured. Elongated rods are inserted into the passage forming pipes and a pair of load spreader plates are placed at opposite ends of the elongated rods. Threaded bolts are advanced on at least one end of the elongated rods to move the spreader means towards one another and to compressively load the body.

Abstract: An apparatus for making a dental root canal filling point is provided, wherein provision is made of a rotary member having its outer processing surface in the form of a curved plane in parallel with its axial direction and adapted to be rotated at a predetermined speed and a moving member in which at least its processing surface is located in parallel with the processing surface of the rotary member and adapted to move at a speed substantially identical with a peripheral speed of the rotary member in the same direction as the rotational direction of the rotary member in a gap portion in which a minimum distance is defined between the processing surfaces of the rotary member and moving member.

Abstract: An improved decorative automotive vehicle trim strip and method and apparatus for forming by reshaping an end of a previously extruded length of thermoplastic material. The surface of the length of thermoplastic material intended for viewing is maintained at a cold temperature, well below the softening point of the thermoplastic material, during the reshaping operation. The length of thermoplastic material is heated during reshaping by a mold section heated 400.degree. to 410.degree. F. pressed against the surface intended to be affixed to the vehicle.

Abstract: This invention relates to a device for the production of grate constructions. In general, such constructions are manufactured manually by connecting transverse ribs to elongated supporting means by welding. Grate constructions can be manufactured automatically at a single step by means of an extruder known from pipe manufacturing techniques. Chill moulds moving in the production direction are thereby modified in such a manner that the chill moulds comprise at least two moulding spaces communicating with each other by means of conduits.

Abstract: An upper contoured die which mates with a lower contoured die is rotated relative to and against the lower die to progressively squeeze and deform a softened thermoplastic sheet. The two dies create sharp detail on both surfaces of the deformed sheet without tearing the sheet.

Abstract: Plastics coated metal tube produced by folding a strip of metal into a tubular form, seaming the tube and immediately extruding layers of plastics material onto the inner and outer surfaces of the metal tube, and cooling the plastics layers by passing the tube through a water bath, contains air injected under pressure to assist adhering the extruded plastics coating onto the inner surface of the metal tube and to test the integrity of the tube. The invention provides apparatus comprising jaws which clamp the tube within the water bath in order to seal the tube while the inner coating is still plastic so that when the tube is cut into lengths at the seals the internal pressure is retained until the tube is eventually used.

Abstract: Apparatus is provided for lining a pipe wherein a thermoplastic liner is initially formed in a cylindrical shape with a diameter slightly larger than the internal diameter of the pipe. The liner is temporarily deformed at an elevated temperature to a different cross-section, preferably U-shaped, to reduce its overall cross-sectional dimension to facilitate insertion into the pipe to be lined. The deformation occurs with substantially comparable elongation of the pipe lining along its opposite sides thereby precluding variations in wall thickness and stress in the pipe. Once inserted, the liner is pressurized and reheated first to a temperature below its crystallization temperature to round the lining in the pipe and subsequently, further pressurized and reheated to a second temperature higher than the crystallization temperature to cause the liner to retain its original round shape.

Abstract: Epoxy tooling which inherently expands and contracts with temperature changes for making parts of metal or plastic has elongated rods extending through guide tubes within the tooling and compression washers or plates on opposite sides thereof. These compression devices for strengthening the tool can be selectively adjusted toward and away from one another using nuts threaded on the rods for varying the compression load on the tooling in accordance with varying tool operating loads, working temperatures and amounts of expansion or contraction. Epoxy tools for molding plastics are heated and expanded to a working temperature and then compressively loaded in selected areas prior to molding operations to prevent tool stress cracking or epoxy tools for metal stamping are compressively loaded and supported in selected areas of high tensile stress and operated at room temperatures for high load metal stamping without fracture.

Abstract: In an installation for deep-drawing and back-foaming of upholstery covers, the deep-drawing molds are disposed on a round table. Besides the round table for the deep-drawing molds, a stationary stretch piston station is provided, serving all deep-drawing molds on the round table passing the stretch piston station.

Abstract: A shaping apparatus for the production of fiber reinforced articles is disclosed. The shaping means includes a first screen having a surface defining the contoured shape of the article; a second screen having a complementary surface defining the reverse contoured shape of the article; and, at least one resilient presser rod operatively attached to the first screen or the second screen. The presser rod engages the fiber matting and presses the fiber matting into either a portion of the first screen or the second screen as the screens are closed together. The shaping apparatus is particularly suitable for the manufacture of glass fiber-reinforced automobile bumpers.

Abstract: An apparatus for stretching dough comprising two pairs of rollers and means for imparting vibrations to the dough positioned between the pairs of rollers is provided. In this apparatus, vibrations are imparted to dough, which causes the thixotropic effect in the dough. Such dough can be readily stretched by being subjected to a tensile stress caused by the difference in the peripheral speed of the pairs of rollers. Therefore, dough can be stretched without subjecting it to high pressure during the stretching process.

Abstract: An apparatus for continuously and progressively forming components from fiber-containing composite material workpieces having a deformable matrix introduces transverse bends into a workpiece that moves through the apparatus in a longitudinal or travel direction. Transverse bending of the composite material is accomplished in a kinematically admissible manner to avoid misalignment or failure of the composite material. A net bending deformation is introduced at a free transverse edge as the composite workpiece moves in a longitudinal direction, by pairs of compound roller elements between which the workpiece passes as it moves through the apparatus. the net deformation introduced at the free transverse edge is moved and distributed through the composite material workpiece during successive passes through the forming machinery, to form the final shaped component.

Abstract: In accordance with the instant invention, biaxially oriented polymer sheet is produced by continuously forging polymer feedstock between a pair of converging belts in an isochoric deformation region to form the sheet from the feedstock. The resulting sheet is immediately annealed after being formed and subsequently cooled after being annealed by passage through an isobaric region defined by a pair of opposed parallel belts backed by a pair of opposed parallel platens which interface with the belts via an oil seal so as to transfer heat from the sheet through the belts to the cooled platens. The resulting sheet has substantially uniform strain distribution over the width and length thereof as well as through the thickness thereof while maintaining its flatness after emerging from the apparatus.

Abstract: One apparatus for forming a workpiece made of thermoformable material includes: (a) a base member; (b) a positioning frame supported by the base member; (c) a suspension tray for supporting a raw workpiece, the suspension tray being supported by the positioning frame; (d) a first pair of forming dies supported by the base member; (e) a press platen; (f) a second pair of forming dies moved by the press platen; (g) an actuator for moving the suspension tray whereby the suspension tray may be moved to a first position and to a second position between the pairs of forming dies; and (h) a cylinder for moving the press platen whereby the first pair of forming dies and the second pair of forming dies may be closed against the raw workpiece and the suspension tray. Other apparatus are also disclosed.

Abstract: Vacuum forming apparatus in which a thermoplastic sheet material is pushed, by at least one plug, into a recess formed in a female mold, and evacuation is applied to the recess to bring the sheet material into intimate contact with a wall surface of the recess. At least one of the female mold and the plug is moved in a first direction in which the plug and a bottom of the recess relatively move toward each other. At least one of the female mold and the plug is moved in a second direction substantially perpendicular to the first direction, in which second direction the plug and a peripheral edge of the recess relatively move toward each other.

Abstract: An apparatus for compression-molding plastic without producing flashes. The apparartus basically consists of a pair of dies complementary to each other, one being stationary and the other being movable so as to be capable of engaging the stationary one. The apparatus has substantially no clearance at a pinch-off section formed by the engaging edge portions of the two dies, and at least one of the engaging edge portions is made of plastic. In one embodiment of the invention both the engaging edge portions are made of plastic.

Abstract: The invention provides a working equipment for roughening the side of optical fiber having a hot stamper, a sheet having rough surface to be transferred, a cushion, and a cushion-mounted plate having a portion formed in stepwise or continuously curved or sloped form.

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: For the production of decorative seams on dashboards or the like, molded of thermoplastic material by the deep-drawing method, or the like, a soft heated embossing die having a negative decorative seam is pressed briefly, at the instant of the deformation of the dashboard or the like, against the molding tool covered with the film. Elastic embossing cushions are glued into the molding tool, thereby providing that the decorative seam will have a convex curvature.

Abstract: Apparatus for forming elongate laminate into a predetermined configuration having a substantially uniform cross-sectional shape in the axial direction, including a plurality of roller pairs having complementary transverse peripheral profiles, plate members disposed between the roller pairs and the laminate and having a transverse configuration corresponding to the peripheral profiles of the rollers.

Abstract: A flat stock strip of thermoplastic material is passed through a heating station in contact with the edges of longitudinally oriented heated knife blades to heat soften the stock strip along narrow longitudinal lines to define localized fold lines for the stock strip. The strip is fed sequentially through a prebending device and a chilled forming die to set the reformed strip at the fold lines. Preferably the knife blades and any strip contact surfaces of the prebending device and the chilled forming die are PTFE covered to eliminate scratching of the thermoplastic stock strip material during heating, reforming and cooling.

Abstract: In accordance with the instant invention, biaxially-oriented polymer sheet is produced by continuously forging polymer feedstock between pairs of converging opposed surfaces. After it is biaxially-oriented, the sheet product is either cooled or heated while being restrained and advanced. The sheet produced by the process and apparatus has substantially uniform strain distribution over the width and length thereof as well as through the thickness thereof.

Abstract: Method and apparatus for rolling dough including rotatable support disc in cooperation with a rotatable obtuse conical roller, means being provided to hold the conical roll spaced above the disc and thereby determine the thickness of the rolled product.

Abstract: Apparatus for making multiple hook-fastener media in which many protruding hooks are formed at relatively high speed from suitable bendable and settable plastic material which may be different from the substrate to which these pre-formed hooks are subsequently bonded. Many rows of hooks are formed simultaneously, each row from a strand, for example, a monofilament of longitudinally oriented polymeric material. The formed strands are "set" into their multiple hook row configuration, and then these pre-formed rows of hooks are simultaneously bonded to the substrate. Thus, an attractive substrate of any reasonable width, for example, of three inches, six inches, a foot or a yard, may be used. The production apparatus enables the number of hooks per square inch, either longitudinally or laterally or both, to be adjusted while running.

Abstract: An apparatus for the vacuum thermoforming of a formable thermoplastic material is disclosed. This apparatus is comprised of at least two counter-rotatable, polygonal, substantially contiguous forming bodies, means for rotating the two polygonal forming bodies in a counter-rotatable manner, means for compressing the two polygonal forming bodies so that they are substantially contiguous, and means for disposing a sheet of formable, thermoplastic material between the two polygonal forming bodies.

Abstract: Apparatus for bending flat thermoplastic laminates into structural shapes such as angles, channels, Z sections, J sections and I sections. In order to bend the laminate into the desired shape by appropriate tooling, heat is applied in a localized manner only to the area that is to be bent. The application of heat is sufficient to heat the laminate to its softening temperature in the bend area, and the plies of the laminate can thus slip in the bend area only as bending force is applied so that the bend can be made without the need to heat the entire laminate to the softening temperature.

Abstract: Detergent bars (soap or non-soap) are stamped or imprinted using a die or dies having a modulus of elasticity in the range 5.times.10.sup.5 to 1.times.10.sup.7 Nm.sup.-2. This gives reduced adhesion of detergent to die, reduced die-blocking and consequently reduced marring of bars. Preferably each such die has a facing layer of elastomer so as to achieve the desired low modulus of elasticity which preferably is distinctly less than that of the detergent.

Abstract: A device for closing a lid of a cap while the cap is still in the mold where it was formed. The device includes a plate forming the moveable side of a parallelogram that rocks between the mold plates during mold opening to press the lid closed and then rocks back out of the way to allow part ejection. The motion is activated by mold opening so the molding cycle is not lengthened by its action.

Abstract: An apparatus for use when manufacturing a substantially circular dough product, said apparatus comprising a turntable defining a planar surface, and conical roller means adapted to cooperate with said turntable and defining a rolling line in the region of the roller close to said planar surface, the turntable being rotatable to permit effective movement between said rolling line and the turntable, the apparatus being provided with means to cause the roller and turntable to move from a relative space to part position to an operative position with a reduced spacing therebetween for a predetermined operational period of time and to cause the roller and the turntable subsequently to return to the initial spaced apart position.