Abstract: Apparatus for stranding wires and covering them in plastics insulation by providing a rotationally flexible elongate member with spaced wire guiding elements, twisting means for twisting the member alternately in opposite directions, and an extension to the elongate member, the extension lying radially within an annular extruder barrel and terminating adjacent the extrusion orifice. In an arrangement for simultaneously stranding wires into different groups and covering the groups within the same insulation, reversible driving means for two or more elongate members is mounted upon a frame. Preferably, each elongate member has its own individual driving means.

Abstract: Reinforced thermoplastic impregnated lubricated wire ropes are provided in the present invention. A method of reinforcing and filling the thermoplastic material with fibers, mineral fillers and powders is also provided.

Abstract: A novel fur yarn is provided and comprises a core of a permanently twisted strand of animal skin and a fluffy exterior consisting of animal hair; the process of making such fur yarn consists in slicing a narrow elongated strand of such fur, twisting this strand, wetting the twisting strand and, then, letting this wet twisted strand to dry so that it may retain its twisted shape; the invention is also concerned with an apparatus for making such fur yarn.

Abstract: Apparatus and method for constructing a corrosion resistant multistrand electrical power cable or wire rope comprising a uniformly greased core wire with at least one outer wire helically applied thereover wherein corrosion inhibitor is and accurately applied to the core wire in a uniform coat immediately prior to stranding of the wires into a cable or rope.

Abstract: Methods and apparatus for forming a cable element comprising a core of plastic material with helical surface grooves containing one or more optical fibers. The core has one or more reinforcing elements resistant to tension and compression and is covered with a covering of tape or thermoplastic. The core is fed to a rigid body having tongues corresponding to and entering into the grooves, and the optical fiber or fibers are fed into the grooves through through-holes in the body which extend from the exterior surface of the body to the tongues and which are inclined with respect to the axis of the core. The core feeding means may be a pay-off bobbin or a core extruder with a threading die, and by increasing the feed rate of the fibers relative to the feed rate of the core or by stretching the core in advance of the rigid body, the lengths of the fibers in the grooves may be longer than the lengths of the grooves.

Abstract: An optical fibre cable comprises a support structure having helical grooves around its periphery. Optical fibres are laid in the grooves. Said fibre-containing grooves (2) are then partially untwisted in the direction of the arrow (4), thereby lengthening the pitch of the grooves and hence lengthening the fibres relative to the grooves.

Abstract: A method for producing a sealed rope of braided or twisted filaments. Heat-shrinkable filaments are braided or twisted about a core of a thermoplastic material to form a rope and the rope is placed under tension and treated to cause the thermoplastic core material to melt. Simultaneously the rope is maintained at a temperature sufficient to cause the heat-shrinkable filaments to shrink but not to melt, whereby the shrinking of the filaments, while the rope is under tension, reduces the cross section of the rope and causes the material to penetrate into the openings between and to surround and seal the filaments of the rope.

Abstract: A method and device for producing a stranded unit having a bundle of stranded elements each consisting of at least one light waveguide covered by a sheath with the elements being twisted alternately with a right-hand twist and a left-hand twist to form a bundle covered with an outer jacket characterized by forming the bundle of the stranded elements and moving the bundle through a guide tube to prevent unraveling and untwisting, extruding an outer jacket surrounding the guide tube and pulling the jacket longitudinally along the axis of the guide tube to reduce the diameter jacket and cooling the jacket. The inside diameter of the jacket is reduced to such degree that as the portion of the jacket is pulled off of the guide tube, it will assume the functions of the guide tube for the bundle of twisted elements.

Abstract: A synthetic filament and a yarn composed thereof wherein the filament comprises at least two different incompatible synthetic linear high polymers, one being distributed as islands in the sea of the other polymer element when seen in cross-section, each island being continuous along the axis of the filament and being characterized by their uniformity in cross-sectional dimension in any cross-section of the filament.

Abstract: A process for the production of a core/mantle yarn, in which a core thread is continuously conducted through a spinning zone in a gap formed between two adjacent and oppositely moving surfaces; staple fibers are fed into the path of the core thread and come into frictional contact with the moving surfaces in said zone to spin the staple fibers about the core thread; the core thread is preferably stretched during the spinning in order to bring about a defined, predetermined elastic stretch of the core thread in the spinning zone; and the core thread has a roughened surface which may be obtained by using a staple fiber yarn or thread obtained by texturizing, weaving, twisting, etc. The invention is especially characterized by an improved adherence of the fibers of the mantle to the core thread by pre-coating the core thread with an adhesive, or preferably by preapplying colloidal silicic acid to the core thread.

Abstract: Windings of fiber compound materials are produced on a core in multicourses hereby the fiber arrangement may change from course to course. For this purpose a plurality of fiber coil carriers are arranged in sequence one after the other as viewed in the direction of core advancement. The fiber coil carriers are arranged coaxially relative to the core. The coils of fibers are supported by the fiber coil carriers. The r.p.m. of each fiber coil carrier is adjustable independently of the r.p.m. of any other coil carrier. Each r.p.m. is adjusted to be inversely proportional to the desired pitch of the fibers in the respective winding course. The direction of rotation of each coil carrier is also selectable independently of the rotational direction of any other coil carrier.

Abstract: A string construction for athletic rackets which can be frictionally engaged with a tennis ball or a badminton shuttlecock very well upon hitting it and which can be uniformly stretched on the athletic racket frame without being twisted, comprises a string-like core made of thermoplastic resin material and a tubular netlike structure made of thermoplastic resin material, the tubular netlike structure netting over and being secured to an outer circumference of the core, wherein the netlike structure includes a plurality of thread-like members forming a plurality of nodes at intersections thereof, all the thread-like members forming each node being integral with each other at each node, and projecting from the outer circumference of the core to a height substantially equal to each other at each node.

Abstract: An integrated string consisting of plural mono-filaments, each of which being fused together with adjacent mono-filaments at the contact points and externally having sharp grooves produced by twisting along its length and internally defining confined spiral bores between the component mono-filaments along its length. The external spiral grooves produced by twisting provide frictional resistance against slipping without deteriorating the specific surface tenacity and the tensile strength of the component synthetic mono-filaments. The internal spiral bores between the component mono-filaments improve the flexibility of the string.

Abstract: Each wire of bare stranded electrical conductor and wire rope when supported outdoors is constantly sliding and rubbing against each adjacent wire in the stranded article due to temperature changes and wind induced vibrations. If the articles are made non-specular or dulled by abrasive blasting the completely stranded article, abrasive particles are entrapped on the interior wires and may cause premature wear and failure of the article. Articles are made non-specular or dulled without abrasive blasting by electrostatic cloud fogging or other methods that only affect the visible surface of the outer wires in the completely stranded article. Overhead supported stranded articles are made non-specular or dulled to reduce visibility because of public demand.

Abstract: Outdoor overhead supported transmission and distribution electrical and communication covered conductor and cable, whether the exterior cover is metal or plastic, is shiny and visible when newly installed in public view. These products may not become significantly dull until after many years of outdoor weathering. Many utilities have had to bury their transmission and distribution lines or building service drops because the public protested seeing them. This invention is for conductors which are inconspicuous and blend into the environment where they are to be used and the public would object if they were conspicuous. The exterior surface of the covers of these linear bodies are dulled or intermittently dulled so that they are not conspicuous and objectionable to the public. Non-specular jacketed light wave conductors are included. Several methods are claimed for these non-specularly dulled or camouflaged products. Cost and service life benefits are indicated for the plastic covered products.

Abstract: The disclosed method of making a shape-stranded rope includes twisting large wires into strands by twining them in at least one layer about a core with a sheathing of a soft deformable material, plastic drawing of the strands, forming the strands into a shaped profile and twisting the strands into the rope. The plastic drawing is effected until every round wire of the strand acquires a wedge-like profile, with the wires adjoining the sheathing becoming partly embedded in this sheathing, and the strand acquires a substantially smooth peripheral surface. The method enables, while using round wires, to increase the structural density of the strands, and also to enhance the flexibility, strength and wear resistance of the shape-stranded rope, the rope manufactured by the disclosed method being usable by various industries.

Abstract: A continuous elongate strength member for reinforcing an optical fibre cable consists of an assembly of aromatic polyamide filaments impregnated with a synthetic resin, in which the filaments are individually coated with the resin, and the filaments of at least an outer layer of the assembly are helically stranded. The impregnation is carried out by separating the filaments and immersing them in a low viscosity dispersion of the resin in a liquid medium; the filaments are then stranded, and the resin is cured. Apparatus for manufacturing the strength member and various forms of cable incorporating one or more strength members, are described.

Abstract: PCT No. PCT/GB78/00019 Sec. 371 Date June 5, 1979 Sec. 102(e) date June 1, 1979 PCT Filed Oct. 3, 1978 PCT Pub. No. W079/00182 PCT Pub. Date Apr. 19, 1979The invention relates to wire ropes.There is disclosed a wire rope comprising a plurality of strands (4-12) twisted together with each strand (4-12) being individually covered by a respective sheath (16) of rubber or rubber substitute. Each strand (4-12) comprises a plurality of wires (14) twisted together with the direction of twist of at least the outer wires (14) in each strand (4-12) being opposite to the direction of twist of at least the outer wires (14) in the strands (4-12) adjacent to it, the rope having an outer covering sheath (18) of rubber or rubber substitute.In this way, the wires (14) of adjacent strands (4-12) do not cross each other, and stress on them is reduced.

Abstract: The instant specification describes an improved method for the manufacture of composite yarns having a central carrier with fibers or filaments adhered thereto. The method includes the step of using a partially oriented yarn as the carrier material and drawing or stretching the partially oriented yarn immediately prior to or as the yarn passes through an extruder to be coated with a binding material.

Abstract: A twine comprised of a core bundle of synthetic monofilaments twisted along the length of the twine and a synthetic binder material in thin band form spirally wound about the monofilaments in a direction opposite to the core bundle twist has been found to form knots of superior strength which are less susceptible to slippage while maintaining good flexibility. A further embodiment comprises the bundle of twisted monofilaments and a synthetic binder in thin band form spirally wound in the direction of the core bundle twist so as to provide a flat twine useful as cable filler.

Abstract: To provide symmetrical communication cables, especially wiring cables for telephone exchange installations, with connectors at the cable ends, in a simple manner, the individual groups of pairs of the cable core consist of a flat cable, which is formed into a group by twisting or torsioning. The pairs of each flat cable are connected to each other by means of flexible holding elements which are cemented or welded to the pairs on one side. In the manufacture of such a communication cable, the pairs of a group are first arranged along the generatrix of a cylinder and are temporarily secured in this configuration by means of a holding helix. The holding helix is cemented or welded to the surface of the pairs and subsequently cut open between two adjacent pairs in the same operation.

Abstract: The present invention provides a process and apparatus for manufacturing yarn products comprised of an inner core of fibers and an outer layer of fibers. In the process, first fibers have a pre-twist imparted thereto to form a strand which becomes the inner core of the yarn and the pre-twist is retained by passing the yarn between two pinch points. While between the two pinch points, second fibers are juxtaposed to the strand and any untwisting tendency by the inner strand will tend to twist the outer layer of fibers. Optionally, the yarn may undergo a further twisting operation while between the two pinch points after the second fibers have been deposited.

Abstract: A device for filling the interstices of a multi-stranded cable with powder, comprising an outer tubular housing and a concentric inner tube with an annular chamber therebetween for moving powder filler from an inlet to the outlet end of the device. Air is deliverable under pressure to the outlet end of the device to disperse the powder as a cloud.

Abstract: An aramid fiber rope having a central core surrounded with aramid fiber rope strands. The core and the aramid strands are coated with a heavy viscous lubricant prior to winding the strands into rope. The lubricated rope is then impregnated and surrounded with a plastic material to entrap the lubricant in the core and the strands.

Abstract: A corrosion resistant rope in which the individual strands are sealed with a plastic foam impregnant and surrounded with a dense unfoamed plastic material is made by applying a foamable plastic to the individual wires of a series of wire strands, or, alternatively, to the individual strands as a whole, and closing the strands into a rope in a closing die while passing a nonfoamable plastic material into the closing die. Sealed plastic foam impregnated wire strands can be made in the same manner by passing nonfoamable plastic material into the stranding die during fabrication of the strand.

Abstract: Disclosed are a relatively or completely maintenance-free tension member suitable for construction of structures, such as cable stayed bridges and a method and apparatus for producing such tension members.

Abstract: A method of producing twine composed of a plurality of thermoplastic mono filaments in a bundle which comprises, passing a bundle of thermoplastic monofilaments continuously along a path, imparting a false twist of 3 to 30 turns per linear foot to said bundle, applying a compatible molten thermoplastic spiral band to said twisted bundle as a spiral band to fuse said spiral band to the outer monofilaments, and recovering a twine having a portion of said false twist captured therein by fusion of the spiral band thereon.The apparatus for obtaining this twine consists of a path along which a bundle of thermoplastic synthetic monofilaments having a false twist therein can be continuously moved, means to direct a molten compatible thermoplastic on to said twisted bundle to form one or more spiral bands on said bundle and to fuse the outer monofilaments of the bundle to the spiral band, and means for imparting a false twist to said bundle at a point prior to said directing means.

Abstract: A device for filling the interstices of multi-stranded cable with powder, comprising an outer cylindrical housing and a concentric inner tube with a closed annular chamber between them. A hopper opens into the chamber and the chamber opens into the tube. A feeder in the chamber pushes the powder from the opening of the hopper to the opening into the tube.

Abstract: A compressed, multi-layered, concentric layer stranded cable electrical conductor with each succeeding overlying layer of strands helically wound in an alternately opposite direction, comprising the product of sequentially circumferentially compressing each succeeding overlying layer of cross lay strands to a regressively reduced state of consolidation.

Abstract: A corrosion resistant rope in which the individual strands are sealed with a plastic foam impregnant and which exhibits excellent retention of lubrication is made by preimpregnating the outer strands of the rope with plastic foam material prior to closing the strands into a wire rope. The final rope may then be surface lubricated to provide temporary and long term corrosion resistance and lubrication to exposed surface wires.

Abstract: Method and apparatus for producing a coated and twisted textile product from discontinuous glass fibers that are effectively interengaged into a relatively loosely associated longitudinal sliver-like grouping. The uncoated grouping is advanced from a container, along a path, for further processing. The grouping is twisted at a location along the path of advancement of the grouping. A coating is applied to the advancing grouping by passing the grouping through a coating passageway containing coating material. The coating passageway being located at a position along the path where the grouping is relatively unaffected by the twist being applied by the twisting means, so as to promote penetration of the coating material into the interior of the grouping.