Abstract: A bonding applicator adapted for use in combination with an apparatus for forming flexible tubing, whereby a continuous, reinforced, flexible tube is formed from an indefinite length of plastic tape or ribbon, together with an indefinite length of wire, which are wound and bonded together by the present bonding applicator to form a continuous tube. The bonding applicator includes a reservoir having a suitable solvent stored therein, and a supply tube connecting the reservoir to the applicator which is provided with an ON/OFF valve operated by the positioning of the applicator arm. A second flow-control valve feeds the solvent to an applicator pad which engages the bonding edges of the overlapping ribbon as it wraps around the tube-forming mandrel.

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 machine for wrapping a pipe with tape or another strip of material includes a frame defined by a pair of spaced apart V-shaped ends, which are interconnected at their vertices by a roll of tape, the ends having wheels and straddling a pipe so that the tape can be unwound onto the pipe when the frame is rotated around the pipe, and one of the frame ends is rotatable relative to the other end so that the wheels on one end can be moved out of alignment with the wheels on the other end to change the path of travel of the frame on the pipe from circular to helical or to lengthen the helix.

Abstract: An apparatus for forming flexible tubing wherein the apparatus provides a tube-forming mandrel adapted to form a continuous, reinforced, flexible tube from an indefinite length of a tape or ribbon of flexible material, together with an indefinite length of wire, which are wound and bonded together to form the tube. The mandrel includes a plurality of angularly disposed cylindrical rollers which are rotatably positioned adjacent each other, each roller being fixed at a given angular displacement with respect to the other and to the central axis of the mandrel, in order to establish the fixed skewed arrangement of a plurality of annular grooves formed in each roller, so as to allow the forming tube to advance axially along the rollers.

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: Apparatus is disclosed capable of wrapping both cold-applied and hot-applied strips of sheet material in tape form around a pipe or conduit having a generally circular cross-sectional external shape. The apparatus includes a frame having a desired number of frame cross members for structural support and having a hinged rotatable frame portion; a plurality of guide roller assemblies connected to the frame; a guide roller tensioning assembly; a sheet material feeding assembly; a sheet material tensioning assembly; a guide roller angular adjustment assembly, adjustable to vary the angle of the guide rollers with respect to the conduit being wrapped for varying the amount of sheet material overlap; a cold-applied tape backing material take off and wrapping assembly, and a burner assembly, alternatively attachable to the frame instead of the cold-applied tape backing material take off and wrapping assembly, when hot applied tape is used.

Abstract: A machine for winding of fibres, especially as a circumferential reinforcement to a pipe extrudate in an extrusion channel, which comprises an open ended hollow rotating fibre carrier and guide around the object, the carrier being adapted for the accumulation of turns of fibre on its outside, the guide being adapted to lead the fibre from the turns accumulated on the outside of the hollow carrier inwardly to the object and, means adapted to rotate the carrier with the guide wherein the outside of the carrier comprises fibre support means adapted for the easy rotation of the accumulated turns of fibre relative to the carrier, and further comprising a stationary fibre bank for supplying the carrier with fibre, means adapted to reverse the direction of rotation of the carrier and buffer means intermediate between the carrier and the fibre bank adapted to temporarily take up turns from the carrier during reverse rotation.

Abstract: A method and apparatus for continuously forming a corrugated tube from a strip of synthetic resin in a softened state by the use of a plurality of rotating rollers arranged in a circular array such that said rollers define an imaginary cylinder about its central axis with the axes of said rollers being parallel to each other but angled relative to the central axis of the imaginary cylinder whereby as the rollers rotate the strip is helically wrapped around and advanced axially along said imaginary cylinder with portions of adjacent turns of the strip overlapping and joined together to form a continuous tube; characterized in that each of said rollers is provided with a plurality of axially spaced annular ridges therearound, said ridges of the respective rollers being so arranged that the associated successive ridges of each adjacent rollers are aligned in a spiral path around said imaginary cylinder.

Abstract: An apparatus for and method of severing a continuous flexible reinforced elastomeric conduit supported on a plurality of elongated rigid mandrels disposed in connected end-to-end relation is provided with the apparatus and method enabling cutting through the conduit at each end of each mandrel so that each mandrel has a length of conduit therearound which is approximately equal to the length of the mandrel.

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: A reinforced plastic pipe is produced by feeding a plastic tube along a feed path while directing a reinforcement strip into a path around a tube so as to wind it into spiral coils which are spaced radially outwardly of the tube and including subsequently pushing the coils in an axial direction while deflecting them inwardly to cause their diameters to be reduced so that they engage around the surface of the tube. The tube is advantageously fed directly from an extruder in a tacky state so that the reinforcement strip will be immediately bound to the surface when it is directed into engagement therewith. The apparatus for carrying out the method includes a thin tubular mandrel disposed around the tube which is formed by an extruder and a winding device is associated with a reel supply of the reinforcement strip so as to feed it around the mandrel.

Abstract: A method and apparatus for continuously manufacturing thin-walled flexible hoses having helical reinforcement members which are relatively strong in relation to the hose walls wherein an internal pressure is applied to the hose core to obviate the need for a manufacturing mandrel, and a plurality of turns of the reinforcement member are coiled onto a fixed tube through which the hose core passes and the successive comparatively unstressed turns of the reinforcement member are applied to the slightly expanding hose core at the tube exit by the application of an intermittent pressure in an axial direction against the respective last turn of the plurality of turns on the tube.

Abstract: An apparatus for the manufacture of a hose structure incorporating an embedded ground conductor comprising shortening a loosely braided bundle of fine conductor wire in the axial direction by compressing the bundle between two pairs of friction rollers rotating at different speeds. The wires are spread in a direction transversely of the bundle axis and flattened to form a ribbon type conductor that is laid on an uncured extruded tube, along the tube axis, and covered over with a textile wrapping and an elastomeric extrusion. Open steam curing of the structure results in a hose showing no appearance of an embedded conductor wire.

Abstract: Pipe wrapping and coating apparatus, wherein one or more rolls of tape for wrapping the pipe are mounted on spindles supported by pivotal frames whereby the frames and the rolls of tape carried thereby pivotally self-adjust angularly so that the tape is wrapped flatly onto the pipe automatically and the overlap of adjacent tape wraps is made uniform automatically. The apparatus is supported by an adjustable wheeled carrier adapted to support the apparatus weight when the apparatus is mounted on pipes of diverse sizes. The apparatus includes a reservoir for dispensing coating material prior to wrapping, and includes novel coating application means.

Abstract: Reinforced plastic tapered tubular rod products and the method and apparatus for producing the same. Tapered steel mandrels of desired length and cross-sectional shape are connected in endwise alignment to form a continuously moving mandrel structure. The mandrels each have an enlarged head and a tapered nose at the opposite end thereof so that the nose extends into a recess formed in the enlarged head of the next proceeding mandrel. These mandrels are fed through a multiplicity of winding wheels in which filament containing strands issued from spools on the wheels are helically wound upon the mandrels. The winding wheels are individually programmable so that the geometry of the reinforcement can be varied ply by ply to obtain the desired longitudinal thickness and the desired torsional stiffness in the end product.

Abstract: A portable pipe joint wrapping machine is provided wherein a pipe enveloping frame which is rotatably supported concentrically with respect to a pipe comprises a reel assembly that is mounted on the frame and that is adapted to receive and rotatably support a roll of wrapping material of the cold wrap type that has a separator sheet between adjoining plies of the roll in position for feeding wrapping material from the roll to the pipe to be wrapped about the pipe while rotating the frame about the pipe, a sheet receiving assembly being provided powered by a wheel that is in frictional contact with the pipe and that is rotated when said frame is rotated about the pipe whereby the separator sheet is received by said sheet receiving assembly as it is stripped from the wrapping material during the rotation of the frame about the pipe with concomitant application of the wrapping material to the pipe.

Abstract: A helical induction coil of large diameter which is to be served with a protective band is suspended from a driving roller having a substantially horizontal axis of rotation so that the coil axis is substantially horizontal. A serving device is supported on the respective convolution to be served and also on immediately adjacent convolutions at the lowermost region of the coil for advancement in the longitudinal direction of the convolutions. Spreading rollers spread the immediately adjacent convolutions from the respective convolution to permit the serving device to advance. The driving roller frictionally entrains the coil and thus rotates the same about the coil axis and the spreading device is advanced at the same speed as but in the opposite direction than the respective convolution so that the position of the serving device diametrally opposite to the driving roller relative to the coil is maintained.

Abstract: A method of making a cylindrical electrical conductor or roving comprised of a bundle of conductive glass filaments, wherein the filaments are cured under tension in a flat ribbon-like form. The method includes binding the filaments into a preferred cylindrical bundle or roving by the steps of passing the filament bundle through the axial bore of an annular bobbin having a binder yarn or element thereon and rotating the bobbin to centrifugally throw the yarn in an unconfined balloon. The free end of the yarn is secured to the filament bundle, thereby wrapping the bundle with a helical overwrap. The balloon of yarn is controlled and stabilized by air currents generated adjacent the bobbin.

Abstract: An improved apparatus for producing a flexible plastic corrugated tubing includes a pair of relatively short, slender rotating mandrels extending substantially parallel to one another and separated along a vertical plane and around which a continuous ribbon of molten plastic is spirally wrapped to form the tubing. In another embodiment, a plurality of elongated rollers spaced apart axially form a tunnel therebetween through which the tubing is directed from the mandrel at least one of the rollers being rotatably driven to drive the tubing through the tunnel.

Abstract: A system for the production of large-diameter hollow bodies from a thermoplastic synthetic resin in which a synthetic-resin hollow-profile strip is extruded and coiled helically so that adjacent turns of the helix are butt-welded together at least in part with the extrusion heat. The synthetic-resin hollow-profile strip has a generally rectangular external cross-section and a substantially round inner cross-section (of the passage) and a cooling fluid is introduced into this passage upon extrusion, and is circulated through the passage at least over a portion of a turn of the helix.

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 rotatable assembly is rotatably mounted on a stationary assembly. The stationary assembly guides a conductor wire, or the like, to a wrapping station, the rotatable assembly applying glue or other adhesive to a portion of a wrapping tape which is wrapped around the conductor wire at the wrapping station. The glue is applied to the wrapping tape by supplying it to a receptacle in the rotatable assembly, from which it is forced out through a hole by centrifugal force. The receptacle is of conical shape so that the centrifugal force acting on the glue will have a component thereof forcing the glue up toward the hole, and out therefrom.

Abstract: Apparatus for generating wire reinforced tubular duct featuring a cantilever mounted mandrel supported for rotation and serving as a supporting surface about which lapping wraps of flexible strip of duct material are formed along a helical path around and forwardly off the mandrel. A helical guide fixed in relation to the mandrel and an endless drive belt coact to drive the flexible duct material along its helical path with the drive belt serving to advance the flexible duct material axially along the mandrel and to rotate 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.