Abstract: Disclosed is a filament winding apparatus comprising a winding mechanism having a pair of arms for winding traversed filamentary yarns impregnated with a resin onto a plurality of mandrels, respectively, and a mandrel retaining mechanism having mandrel receiving portions by a number of at least two times of the number of the mandrels to be set on the arms of the winding mechanism. The arms are swung between a winding position and a mandrel exchange position of the mandrel retaining mechanism. The retaining mechanism is a little moved when the mandrels are exchanged. A plurality of mandrels can be easily and efficiently exchanged at the same time without a particular device. The number of the mandrels for simultaneous filament winding can be increased and a high productivity can be obtained. Further, this apparatus can be realized at a relatively low cost.

Abstract: A consolidated structure with less than 6 percent void content is formed from a plurality of thermoplastic impregnated yarns traverse wound on a rotating mandrel by feeding the yarns under tension simultaneously from a source of supply to a traversing carriage as adjoining flat tapes. The tapes then move successively through a preheating section, a heated circular guide and a contact portion heating source, all on the carriage, before being laid down in a predetermined path on the mandrel.

Abstract: A paint roller is comprised of a thermoplastic tubular core and a cover fabric heat-fused thereto without an intermediate adhesive. The fabric is wound around the core in a helical path, and the core is heat-softened in the zone of winding to fuse the fabric to the core as it is wound thereon.

Abstract: A filament winding system includes a head that selects the number of tows to be within a winding band while winding and positioning the winding band directly on the mandrel according to contours of the mandrel. Half of the tows are conveyed in an upper portion of the head and the remaining half are conveyed in a lower portion of the head with both halves meeting at an applicating roller at the discharge end of the tows. The head includes cut and add assemblies wherein the individual tows are selectively cut and later can be added to the band.

Abstract: A fiber guide includes a sleeve having a longitudinal slot therealong a first member, having a notch, is fixed in the sleeve with the notch substantially aligned with the slot. A second member, also having a notch, is rotatably disposed in the sleeve. Thus, a fiber can be positioned in the notches of the first and second members and secured therein by rotating the second member. The fiber can also be readily removed from the guide, without damage or impediment, by reversing the rotation of the second member.

Abstract: Apparatus whereby a filament web impregnated with resin in the unpolymerized state is fed to a pole (1) at a predetermined angle (.alpha.) with respect to a plane perpendicular to this latter. The pole (1) is drawn in rotation about its axis (X-X') and the filament web is displaced along the pole from the bottom end to the top end thereof in a direction parallel to the axis of the pole while this latter is being driven in rotation. A plurality of parallel fiber slivers (8, 9, 10) spaced a distance apart are fed simultaneously to the pole (1) in a plurality of layers. The spacing between the slivers is progressively increased during displacement of the slivers between the bottom end and the top end of the pole and progressively decreased in the opposite direction. Similarly, the angle of the slivers to a plane perpendicular to that axis is progressively increased and decreased in the same directions that the spacing is increased and decreased.

Abstract: The invention relates to a process for the production of hollow bodies of revolution formed from threads extending in three different directions, as well as to a machine for performing this process. The machining of a mandrel, the installation or implantation of retaining or locking rings on this mandrel, the winding and weaving of the threads in circumferential, longitudinal passages formed between the locking rings and the appropriate dimensional controls and checks are carried out on the same machine. On one side of the horizontal axis of the machine is provided a mobile support on which can be mounted the subassemblies for machining the mandrel, the implantation of the locking rings, winding and control, the weaving system being placed on the other side of the axis. In order the facilitate the weaving operations, the weaving carriage moves parallel to a fictitious generatrix joining the ends of the body, the weaving means being oriented perpendicular to said generatrix.

Abstract: A taping machine (10) for hot taping an electrical conductor (1), the machine comprising an outer ring (20) which is fixed so as not to rotate relative to the conductor and which receives the conductor to be insulated passing through the center thereof, and a rotating ring (30) rotating inside said fixed ring and carrying at least one reel (53) having pre-impregnated insulating tape (2) wound thereon, the taping machine and the conductor being caused to move relative to each other in translation while said rotating ring is simultaneously caused to rotate relative to the conductor to cause the, or each, tape to be helically wound around the conductor, said fixed ring including a peripheral channel (21) which is fed with hot air, and said rotating ring being provided with a rotating assembly (50) including a plate (51) for closing said peripheral channel, at least one spout rotating around said peripheral channel, and at least one associated heating nozzle (55) which is fed with hot air via said spout, with eac

Abstract: A method for high speed continuous production of reinforced plastic sheets and reinforced plastic sheet laminate structures which may have widths ranging from relatively narrow to very wide. One or more layers of resin impregnated, fiber-containing, reinforced plastic composite material is brought into contact with surfaces of one or more endwise abutted relatively flat panels. The panel or panels are then passed between a pair of continuously rotating belts. A pressurized air body is formed in a plenum chamber which faces the interiorly presented surface of at least one of the belts and which air body is between the housing forming the plenum chamber and the interior surface of the belt. Preferably, a similar housing creates a pressurized air body between such similar housing and the other of the belts. In this way, the pressurized body of air forces the belts into intimate contact with the layers forming the reinforced plastic laminate structure.

Abstract: Process of making a reinforced tube including extruding a thin walled tube, encircling the tube with a completely closed layer of helically extending strip coated with heat activatable adhesive material. The tube is then passed through a sizing die heated at its entrance to activate the adhesive while subjecting the tube to relatively low internal pressure to bond the tube to the layer of strips. The integrally connected tube and strips are then passed through pinch rolls which close the tube and maintain the pressure upstream from the rolls different from the downstream pressure. Further reinforcing strips and an outer sheath are thereafter provided.

Abstract: Apparatus for producing reinforced plastic sheets and reinforced plastic sheet laminate structures on a high speed continuous basis and which sheets and laminate structures may have widths ranging from relatively narrow to very wide. The apparatus comprises a means for bringing one or more layers of resin impregnated, fiber-containing, reinforced plastic composite material into contact with each other or into contact with surfaces of one or more endwise abutted relatively flat panels.

Abstract: An overhead electric conductor with optical fibres loosely housed in the bore of a central core, which bore also contains a greasy water-impermeable medium 4, is manufactured by causing a preformed elongate metal member of U-shaped transverse cross-section and the optical fibres to advance in the direction of their lengths, the rate of advance of the fibres being restrained. As the U-shaped elongate member is transversely folded around the optical fibres greasy water-impermeable medium is injected into the bore of the elongate metal member under a controlled pressure. The consistency of the greasy water-impermeable medium the pressure and rate at which it is injected into the bore and the degree of restraint imparted to the optical fibres 3 is such that, in a predetermined length of the conductor, the length of the optical fibres exceeds the length of the bore by a controlled extent, preferably 1 to 3%.

Abstract: A method and an apparatus for producing a tube from a strip of synthetic resin and/or unvulcanized rubber incorporating a vulcanizing agent by winding the strip on a former supported by a frame in the manner of a cantilever to shape the strip into a tubular body and heating the tubular body on the former by a heater while sending out the tubular body toward the free end of the former.

Abstract: PCT No. PCT/US79/00450 Sec. 371 Date June 26, 1979 Sec. 102(e) Date June 26, 1979 PCT Filed June 26, 1979 PCT Pub. No. WO81/00096 PCT Pub. Date Jan. 22, 1981A braking apparatus (36) is provided for a supply spool (30) whereby material (12) drawn from the spool (30) will have a relatively uniform tension. The braking apparatus (36) includes a follower roller (40) in contact with the material (12) on the spool (30) and a brake portion (38) in adjustably controlled braking contact with a brake rotor (102) mounted for rotation with the spool (30). The follower roller (40) follows the decrease in the diametral amount of material on the spool and simultaneously moves the brake portion (38) toward the center of the brake rotor (102) wherein a uniform braking force on the spool (30) is maintained.

Abstract: The disclosure relates to a construction for a wrapped elongated structure, a method of manufacturing an apparatus to manufacture the wrapped elongated structure. The wrapped elongated structure has an elongated core. An adhesive tape having one adhesive surface is applied to the surface of the core along the length thereof with the adhesive surface facing away from the core. Tape wrapping is spirally wrapped around the core and the applied adhesive tape in order that each turn of the tape wrapping contacts the adhesive surface of the adhesive tape. The adhesive tape secures the tape wrapping in its spiral form with respect to the elongated core. The wrapped elongated structure may also structure may also included an elongated core, a first tape wrapping spirally wrapped around the core, an adhesive tape having two adhesive surfaces applied on the spiral first tape wrapping, and a second tape wrapping spirally wrapped around the adhesive tape.

Abstract: The present invention is concerned with methods of and apparatus for constructing cylindrical structures such as large-diameter pipes for the transport of materials in ocean mining and the like, whereby one or more rolls of previously prepared sheet materials are wound around a core in a cross-wise fashion and bonded and treated by chemical and physical processes from a special floating platform that enables such construction operation in situ on the high seas.

Abstract: A pile weatherstripping has a continuous length of a resin anchorage base with even lengths of filaments secured to opposite sides of the base along the length of the base and extending away from the base in the same general direction on each side of the base. The filaments are long enough and dense enough to form insulating pile rows extending out of a retainer slot in which the anchorage base has an interference fit. A sheet resin fin preferably extends continuously outward from the base between the filaments on the opposite sides of the base, and such a weatherstripping is preferably made by wrapping a multifilament yarn around a plurality of bases, securing the yarn to opposite sides of the bases, and then slitting to separate each individual weatherstrip.

Abstract: The present invention relates to FRP members, the apparatus and process for making same. The FRP members are reinforced with helical strands of reinforcing material disposed in expanded helices of opposite hand, the helices of each hand being contained in discrete layers. The lead angle of each helix may be constant or varied along the length of the member independently of whether the member is cylindrical or tapered in order to provide the desired structural characteristics. The process comprises impregnating the reinforcing strands with resin and wrapping those strands onto a mandrel by apparatus in which relative rotational as well as relative translatory movement between the mandrel and a winding head may be effected to wrap the strands onto the mandrel. At least one relative movement may be selectively varied to effect the desired lead angle to the helically disposed reinforcing strands along the length of the mandrel.

Abstract: An improved process, and the apparatus for carrying out the process, of forming an elongated hollow body from fibre-reinforced synthetic resins. A plurality of resin impregnated support fibres are positioned over and extend longitudinally along a rotating mandrel, which support fibres are fed from a feed station having a plurality of spools thereon, which feed station rotates synchronously with the mandrel. The longitudinal support fibres form a fibrous substructure which rotates with the mandrel. A plurality of fibrous elements, also resin impregnated, are wrapped around the fibrous substructure to form the hollow body. The hollow body is gripped by a clamping device disposed at the discharge end of the rotating mandrel for pulling the hollow body and thereby displacing same longitudinally along the mandrel, which clamping structure simultaneously permits rotation of the hollow body with the mandrel.

Abstract: A pile weatherstripping has a continuous length of a resin anchorage base with even lengths of filaments secured to opposite sides of the base along the length of the base and extending away from the base in the same general direction on each side of the base. The filaments are long enough and dense enough to form insulating pile rows extending out of a retainer slot in which the anchorage base has an interference fit. A sheet resin fin preferably extends continuously outward from the base between the filaments on the opposite sides of the base, and such a weatherstripping is preferably made by wrapping a multifilament yarn around a plurality of bases, securing the yarn to opposite sides of the bases, and then slitting to separate each individual weatherstrip.

Abstract: A pile weatherstripping has a continuous length of a resin anchorage base with even lengths of filaments secured to opposite sides of the base along the length of the base and extending away from the base in the same general direction on each side of the base. The filaments are long enough and dense enough to form insulating pile rows extending out of a retainer slot in which the anchorage base has an interference fit. A sheet resin fin preferably extends continuously outward from the base between the filaments on the opposite sides of the base, and such a weatherstripping is preferably made by wrapping a multifilament yarn around a plurality of bases, securing the yarn to opposite sides of the bases, and then slitting to separate each individual weatherstrip.