Abstract: A method of fabricating a tip section of a fishing rod with, an integral ferrule located at the butt end of the tip section, employs a mandrel having an annular shoulder separating two discrete mandrel sections. Heat-curable sheet material is wrapped about the first section adjacent the shoulder until the outer diameter of the wrapped material corresponds to the diameter of the second section of the mandrel. The result is a smooth transition from the second section to the wrapped material. Additional heat-curable material is then wrapped about the second section and the previously wrapped material overlapping the shoulder section. The wrapped material is compacted against the mandrel and heated until cured. Upon removal of the compacting forces of the mandrel, the cured material is in the form of a hollow rod having a ferrule for receiving another rod within the region of the second wrapped material.

Abstract: A completely automatic process and apparatus are described for producing multi-layer rubber or plastics tubes reinforced with fabric tapes or metal wires.The apparatus is new both overall and in its individual component units.Specifically, spiral-forming units of new design are described, which operate in series to each apply a different tape material as a spiral on to the metal core which is fed with rectilinear motion, to form a continuous layer thereon. Unwrapping units are also described for automatically removing and rewinding the outer forming tape for the finished tube.

Abstract: A composite javelin having superior vibration damping characteristics is provided having a hollow or low density body of generally circular cross-section which tapers from small diameter front and rear tip ends to a large diameter more or less in the center, said tapered diameters and general tip and grip features being in conformance with the requirements of the International Olympic Committee. The javelin body can be constructed in either a one or two piece manner and constitutes a plurality of Kevlar.RTM. or fiber glass prepreg bias wound plys forming an underlayer and a plurality of bias wound graphite/epoxy prepreg plys forming an overlayer. In the preferred two piece construction, the distribution of weight and composite center of gravity can be adjusted within the body to allow tuning the javelin to an individual athlete's throwing characteristics.

Abstract: Two cooperatively rotating annular wheels are temporarily deformed against each other radially to form a contact length and are partially located in a heated chamber. Each annular wheel is connected to a rotating shaft by means of flexible means. A positive pressure is maintained in the heated chamber. A circumferential groove is provided on the rim of each annular wheel so that when the two annular wheels rotate cooperatively, the grooves cooperate to form a closed orifice along the contact length of the annular wheels. A mandrel, rotating about its axis, protrudes into this orifice. A plurality of elongated composite plies are wound around the mandrel and are clamped and carried forward by the annular wheels. In the heated chamber, the elongated plies are subjected to a sustained pressure and temperature. They are cured under this pressure and temperature after which they are cooled under pressure and exit from between the annular wheels as an elongated cured composite tube.

Abstract: In a single-face corrugator of the type in which the corrugated paper is held by suction against the lower corrugated cylinder, the latter includes, outside its inner chamber filled with saturated heating vapor, separate longitudinal channels in the peripheral body of the cylinder. Each channel is connected to the exterior via axial channels and elongate grooves machined in the periphery of the cylinder, and can be connected to a suction apparatus via two hollow and sealed circular arcuate sectors bearing on the part of the face of the cylinder associated with the holding region on the latter. The grooves are staggered and machined in circumferential portions of the periphery of the cylinder so as to extend over several corrugations thereof. An additional blowing sector permits detachment of the corrugated paper.

Abstract: A method of making a cable (20) specially suited for use in building plenums because of its low flame spread and smoke evolution includes enclosing a multiconductor core (22) in a sheath comprising an inorganic, cellular core wrap (31), a corrugated metallic barrier (40) and dual layers (51) and (52) of a polyimide tape. The tapes are wrapped helically about the barrier in a manner that avoids a compression of the core wrap. The sheath is effective to resist heat transfer inwardly toward the core by conduction while the metallic barrier reflects radiant heat. Advantageously, the sheath containerizes the core without unduly compressing it and thereby allows the intumescence of conductor insulation during a fire to form char which is effective to suppress the evolution of smoke and the propagation of flame.

Abstract: A method and apparatus is provided for continuously fabricating a high pressure hose, or the like, which includes axially advancing interconnected hollow mandrels through a plurality of winding stations wherein all of the hose building components are helically wound upon the advancing mandrels. A heat shrinkable webbing may also be wound upon the advancing mandrels so as to cover the hose components. The mandrels are then separated, and steam is introduced into the interior of the mandrels to effect curing of the hose components, with the shrinkable webbing acting to radially compact the components to remove air pockets and smoothly conform the innermost component against the mandrel. A method and apparatus is also provided for unwinding the shrinkable webbing from the hose after curing, and which includes a drive control system which advances the hose through an unwinding deck while insuring that the webbing being withdrawn from the hose is aligned with its take-up spool.

Abstract: A discrete tube is provided which can be readily torn into a length of coiled insulation wrapping. The tube comprises at least two plies of a firm, foamed thermoplastic polymer web which had been set into a coiled configuration. The plies are welded together on their radially facing adjoining surfaces to form the tube, but the plies are offset and the axially facing edges of each ply are not welded together, such that the nonwelded edges form a junction line along a central portion of the radially facing edge of the adjacent ply.The tube is preferably formed by heat sealing the two plies together, while simultaneously heat setting each ply into the coiled configuration. The laminated coil resiliently maintains the desired configuration.

Abstract: A first flexible strip is helically wound with adjacent edges of adjacent wraps in edge lapping relation, a forming or reinforcing element such as a wire is helically wound in overlying centered relation to lapping edges of the first strip and a second flexible strip is helically wound about the first strip covering and encasing the first strip and reinforcing wire, the second strip having adjacent edges of adjacent wraps in lapping relation symmetrically disposed in staggered relation to the lapping edges of the underlying first strip.

Abstract: Method and apparatus for continuously-developing multi-layer tubing from plural ribbons of wrapping material of indefinite length layered in seriatim upon a continuously-formed mandrel serving as a temporary supportive base for the tubing. A driven cylindrical winding mandrel is rotatable about its longitudinal axis and has a plurality of longitudinally-extending serrations on its exterior periphery. A stationary driving helix is operatively associated with the winding mandrel means for feeding a workpiece in ribbon form through the driving helix. Initial pressure means proximate the driving helix allows the continuous curling of the workpiece radially inwardly into adjacent helical convolutions about the winding mandrel. This impresses serrations on the convolutions mating with the winding mandrel serrations in the generation of the helical coil configuration and the definition of a developing formed mandrel as a supportive base.

Abstract: An anti-holiday cable armor for submersible electrical cables comprising two generally helically wrapped, overlapping metal straps, the second metal strap being wrapped longitudinally in a direction opposite to the direction of wrap on the first metal strap, for providing anti-holiday protection when the cable is pulled in either direction is disclosed.

Abstract: The composite of the present invention comprises a layer of ceramic having completely imbedded therein a metal grid, such composite having been made by coating a metal grid with a viscous ceramic slurry and thereafter firing to form the ceramic to a unitary structure. At the temperature to which the composite is fired to form the unitary structure the metal grid is in an expanded condition because of its high coefficient of thermal expansion, and upon cooling the metal grid is put into tension thereby putting the ceramic in compression. The composite has particular utility as thermal insulation for internal combustion engine exhaust systems.

Abstract: An improved elongated blade or blade spar comprises successive low-pitch circumferentially wrapped convolutions of a synthetic resin impregnated tape having elongated cut glass and substantially parallel and equal length filaments wherein successive convolutions are overlapped approximately 50% and wherein the axis of the elongated strands lie at an angle of less than 30.degree. from the elongated spar axis. Preferably, resin impregnated filamentary strands are circumferentially wrapped around the mandrel substantially parallel with the direction of the tape wrap between selected tape layers. The improved blade spar mandrel wrapping apparatus includes a split ring support for the mandrel and through which the mandrel extends. The support ring halves may be separated, moved and rejoined during the mandrel wrapping process.

Abstract: This disclosure relates to a method of manufacturing a pipe having a rubber lining within a layer of looped fabric and a resin layer.The method comprises placing a tubular layer of unvulcanized rubber on an expansible mandrel, then wrapping a layer of looped fabric on the rubber layer, with the loops outwardly directed. The mandrel is expanded to draw the looped fabric partially into the rubber, the protruding loops then being impregnated with uncured thermosetting resin, and glass fabric is then wrapped on the resin.

Abstract: A laminated friction member, such as a clutch facing comprising a friction element comprising aramid fibers and a reinforcing element formed of non-aramid fibers, the elements being impregnated with and bonded together by means of heat-curable cement.

Abstract: A discrete tube is provided which can be readily torn into a length of coiled insulation wrapping. The tube comprises at least two plies of a firm, foamed thermoplastic polymer web which has been set into a coiled configuration. The plies are welded together on their radially facing adjoining surfaces to form the tube, but the plies are offset and the axially facing edges of each ply are not welded together, such that the non-welded edges form a junction line along a central portion of the radially facing edge of the adjacent ply.The tube is preferably formed by heat sealing the two plies together, while simultaneously heat setting each ply into the coiled configuration. The laminated coil resiliently maintains the desired configuration.

Abstract: A tubular fiber reinforced composite shaft is formed by providing a metal sleeve having a plurality of circumferentially straight surface segments on the outer periphery thereof. The sleeve is positioned upon a segment of a mandrel. Fibrous material bearing a non-solidified resinous material is applied to the mandrel and the circumferentially straight surface segments of the sleeve. The resinous material is solidified with portions thereof lying flush against the circumferentially straight surface segments to create a torsion-transmitting connection with the metal sleeve.

Abstract: Steel pipe is provided with protective coating by first applying a corrosion protective coating such as fused powdered epoxy resin or heat activated adhesive or butyl-based pressure-sensitive adhesive adhered to the pipe, then extruding or coextruding an outer polyolefin layer directly onto the corrosion protective coating. The coextrusion step may include an outer layer of high density polyethylene and an inner adherent layer of low density polyethylene, or an outer layer of polyethylene or polypropylene and an inner layer of a copolymer of ethylene or propylene and acrylic acid.

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: An ice hockey stick having an elongated handle attached to a blade. The handle has a solid lightweight and flexible wood body reinforced with plastic sheet members provided with longitudinally oriented glass fibers. The blade has a rocker shaped bottom with a heel carrying an epoxy wear strip. The blade is reinforced with glass fiber fabric impregnated with a resin plastic.

Abstract: A method of manufacturing an annular seal for a heat recuperator tube end is disclosed as comprising loosely wrapping without appreciable tension at least one layer of a compressible and resilient blanket of unbonded ceramic fibers about an annular forming mandrel, stabilizing the inner area of the fiber layer, thereafter compressing the fibers to decrease their volume while not destroying the recuperative ability of the fibers to resiliently expand back to a volume substantially greater than their compressed volume when the compression is released by wrapping a retainer exteriorly of the fibers to compress them and to temporarily retain them in compressed condition, the retainer being destructable at operating temperatures of the tube ends of the recuperator in which the seal is to be used. A specific wrapping process utilizing overlapping sheets of heat destructable wrapping material is disclosed.

Abstract: A turf-like product suitable for use as a golf tee surface is constructed of artificial turf units which are strung on a plurality of tie rods which are secured at both ends. Each turf unit comprises a number of superimposed layers of a polymeric tape having slits which are transverse to the length of the tape. Holes are programmed in determined frequency along the length of each layer by a heated plunger which passes through the layers of tape. The layers of tape are fused together at the circumference of each hole whereby integrity in the turf unit is obtained. The programmed holes are also used as a mechanical device to construct the pile surface by means of the tie rods. The superimposed layers may be formed by winding the tape on a skein winder.

Abstract: The invention relates to packaging "sleeves," or multi-sided, tubular structures which may be used for packaging articles, as blanks for boxes, or the like, which are made from multiple layers of spirally wrapped strips of paper, fabric, or the like; which sleeves may have discrete corners at the junctures of their sidewalls, which corners may be permanent where rididity is desired, or foldable so that the sleeves may be flattened for storage and/or shipment.

Abstract: A fabric sleeve having lengthwise yarns of a low friction material and circumferential threads of a bondable material is secured on a mandrel utilizing in particular the heat shrinkage of the circumferential threads but also the axial shrinkage of the low friction material. After cooling, the sleeve is impregnated with a liquid resin and may be stored for future use utilizing the ends of the mandrel for support and handling. When required, the resin is cured to form a rigid tube. The tube has an internal bearing surface a predetermined size larger than the mandrel and may be readily withdrawn from the tube and then cut to selected lengths to comprise the desired bearings.

Abstract: A can is provided that includes a tubular can body having a separation line extending from one end to the other with a label over it to prevent the separation line from opening during shipment or storage. The label includes a partial circumferential collar cut extending from one edge of the label material toward the other edge and having a termination point spaced from the other edge of the label. According to one method of manufacture the cuts in the label are formed by severing the label stock just before it is wound upon the fiber body during the manufacture of the tube from which can length pieces are cut. The knife is moved rectilinearly parallel to the tube with the same component of velocity that the label has parallel to the axis of the tube thereby providing a cut in the label at right angles to the can axis.

Abstract: A carbon graphite fiber reinforced shaft incorporating longitudinal plies and radial plies. In transverse aspect, the radial plies incorporate two interleaved helices with three turns around the shaft. The fibers in the two helices are oppositely oriented at an angle to the longitudinal axis of the shaft. The fibers in one radial ply have a modulus that is substantially 50% greater than the modulus of the opposed interleaved radial ply.

Abstract: The composite tube has an inner core of a first material, an intermediate zone of a second material surrounding said core, and an outer wrap surrounding and confining said intermediate zone. The intermediate zone is spirally wound layers of ceramic paper bonded together. The tube is light in weight and has a very low thermal conductivity.

Abstract: There is disclosed a method and apparatus for making tubular fiber reinforced thermosetting resin elements having a thermoplastic lining. The technique involves application of a thermoplastic lining layer to an axially moving mandrel surface, application of at least one layer of fiber reinforced thermosetting resin material superimposed upon the lining layer, providing for bonding of thermosetting and thermoplastic layers to each other, and heating the thermosetting resin to effect solidification during axial advancement of the superimposed layers with the moving mandrel surface. Provision is also made for applying a thermoplastic jacket layer superimposed upon the thermosetting layer.

Abstract: The composite of the present invention comprises a layer of ceramic having completely imbedded therein a metal grid, such composite having been made by coating a metal grid with a viscous ceramic slurry and thereafter firing to form the ceramic to a unitary structure. At the temperature to which the composite is fired to form the unitary structure the metal grid is in an expanded condition because of its high coefficient of thermal expansion, and upon cooling the metal grid is put into tension thereby putting the ceramic in compression.

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 sandwich wall for pipes, tanks, and the like fluid confining uses, wherein concentric inner and outer glass fiber reinforced plastic skins or shells are separated from one another by essentially radial ribs integrated into the shells to form a monolithic construction. The ribs are of limited axial extent and are separated from one another by rib forms of substantially greater axial extent, the rib forms functioning essentially as spacers without otherwise materially contributing to the strength or rigidity of the structure. The ribs are composed of essentially the same resinous material as the shells plus a filler, which typically can be chopped glass fiber strands, sand, or other particulate material, glass fiber mat or woven fabric, glass flakes, or mixtures of such materials. The ribs may be either helical and continuous throughout the axial extent of the wall or annular and independent of one another. Various methods of making such sandwich wall structures are also disclosed.

Abstract: A hollow resin bonded glass fiber column of unique cross section suitable for use as a utility pole, light standard or the like is disclosed including unique means for forming the pole. A rotatable finned mandrel is wrapped with a waxed surfaced paper and then sprayed with a mixture of chopped glass, resin and catalyst which is initially pressed thereon by a roller and then wrapped with continuous bands of fiberglass roving, re-rolled, covered with a fiberglass veil, rolled again and allowed to cure. The finned mandrel which makes relatively thin line contact with the inside of the pole and the wax surfaced paper allows the curved pole to be easily slipped endwise from the mandrel. In one embodiment a metal mandrel having eight radially extending fins has been successfully used to form fiberglass poles of octagonal cross section.

Abstract: The vaulting pole has at least three layers, two of the layers comprising fiberglass tape helically wound along the pole into a succession of butt-jointed turns with the fibers thereof extending primarily lengthwise of the tape but the turns of the two layers being crossed with respect to each other, and the third layer comprising a plurality of turns of fiberglass cloth sandwiched between the two tape layers, the fibers of the cloth extending primarily lengthwise of the pole.

Abstract: A thermoplastic coupler sleeve for interconnecting tubes or pipes is made by extruding thermoplastic material, e.g., polyethylene, to make a ribbon, and wrapping the ribbon around a heater coil in as many layers as needed to obtain the sleeve.

Abstract: The invention relates to a process and an apparatus for the production of wound sandwich structures, wherein the inner shell, made of a galss-reinforced plastic, is prepared in a known way, then solid core elements are wound onto the inner shell, and finally an outer shell, made of a glass-reinforced plastic, is formed on the wound core. Thus rigid articles (e.g. containers), consisting of inner and outer shells of glass-reinforced plastic and a core of wound core elements, are obtained. The core elements are wound up by forwarding the individual elements directly one after another onto a thread which carries the core elements, presses them onto the rotating mandrel, and is also wound up, or by forming a flexible band by adhesion, from the core elements and the carrier thread or band, and this flexible band is wound up. The inner and outer shells, and the surface of the core material are prepared preferably on a conventional winding machine, provided with auxiliary equipments according to the invention.

Abstract: Track belts designed to fit circumferentially around a pneumatic bladder or tire carcass can be sealed against the ingress of soil and rock between the track shoes attached about the outer periphery of the belt by forming individual and permanent flat sites on the outer circular periphery of the belt so the flat undersurface of each track shoe is nested on a flat shoe site and therefore does not have triangular shaped gaps under its leading and trailing edges. A transverse rib of elastomer, raised from the surface belt between each of the adjacent flat sites further seals the belt in the narrow gaps formed between adjacent track shoes thereby preventing the ingress of soil and rock in these gaps when the shoes pass through a footprint formed as the pneumatic supported system is rolled.

Abstract: In the described process for the manufacture of reinforced hoses of elastomeric material having a hollow space in their wall, said hollow space is formed by means of a structural shape helically positioned between the two assemblies of layers which constitute in their whole the wall of the hose, and during curing the hollow space is filled with a material inert to curing, which is discharged in liquid state from the hollow space after curing.