US3526570A - Parallel wire strand - Google Patents

Parallel wire strand Download PDF

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US3526570A
US3526570A US575038A US3526570DA US3526570A US 3526570 A US3526570 A US 3526570A US 575038 A US575038 A US 575038A US 3526570D A US3526570D A US 3526570DA US 3526570 A US3526570 A US 3526570A
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Prior art keywords
strand
wires
wire
hexagonal
parallel
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Jackson L Durkee
Arthur F Beighley
Donald E Dunlap
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Bethlehem Steel Corp
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Bethlehem Steel Corp
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/002—Making parallel wire strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/14—Aprons, endless belts, lattices, or like driven elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/10—Devices for taking-up or winding the finished rope or cable
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/4031—Winding device
    • D07B2207/4036—Winding device comprising traversing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49828—Progressively advancing of work assembly station or assembled portion of work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12326—All metal or with adjacent metals with provision for limited relative movement between components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12347—Plural layers discontinuously bonded [e.g., spot-weld, mechanical fastener, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12382—Defined configuration of both thickness and nonthickness surface or angle therebetween [e.g., rounded corners, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2925—Helical or coiled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section

Definitions

  • PARALLEL WIRE STRAND Filed Aug. 25, 1966 4 Sheets-Sheet 5 J. L. DURKEE ET AL PARALLEL WIRE STRAND 4 Sheets-Sheet 4 Sept. 1, 1970 Filed Aug. 25, 1966 United States Patent C) 3,526,570 PARALLEL WIRE STRAND Jackson L. Durkee, Bethlehem, and Arthur F. Beighley and Donald E. Dunlap, Williamsport, Pa., assignors to Bethlehem Steel Corporation, a corporation of Delaware Filed Aug. 25, 1966, Ser. No. 575,038 Int. Cl. Ellld 21/00 US. Cl.
  • This invention relates to prefabricated parallel wire strands, and more particularly to prefabricated parallel wire structural strands with superior physical properties.
  • structural strand refers to a multi-wire strand used as a substantially fixed permanent structural member.
  • the parallel wire strand of the present; invention has, however, been found particularly useful for building up larger parallel wire structural cables such as are used for the main supporting cables of suspension bridges. This invention will therefore be described with respect to parallel wire strand fabricated for use in the construction of suspension bridge main cables.
  • Parallel Wire cables are the primary type used for suspension bridges because of their superior strength and axial stiffness over cables made of helical-wire strands, which do not develop the unit ultimate strength or the modulus of elasticity of parallel-laid wires. It has been the practice to construct parallel wire cables in suspension on the bridge by a process known as aerial spinning, that is by hauling individual loops of bridge wire back and forth over the bridge towers and connecting them to the anchorages. A number of such wires are bundled together to form a parallel wire strand. A group of such parallel wire strands are formed consecutively and then compacted together to form the parallel wire suspension cable.
  • hexagonal parallel wire strand in a hexagonal roller die using wires arranged with their casts opposed, pulling the strand through the die by means of a hexagonal clamping device, and securing the strand wires together by resilient binding means; and that such parallel wire strand can be effectively reeled with alternate rotation about the strand axis in opposite directions.
  • hexagonal parallel wire strand can be continuously made and reeled by the use of a dynamic clamp, i.e. a continuously movable clamp, interposed between the forming dies and the reel.
  • FIG. 1 shows a plan view of an arrangement according to the present invention for forming parallel wire strand.
  • FIG. 2 shows a side elevation of the arrangement shown in FIG. 1.
  • FIG. 3 shows an isometric view of an initial portion of the apparatus.
  • FIG. 4 shows an elevation of the reeling portion of the apparatus.
  • FIG. 5 shows a plan view of the portion of the apparatus shown in FIG. 4.
  • FIG. 6 shows a cross section of one form of the strand of the present invention.
  • FIG. 7 is a cross-section through the parallel wire strand in FIGS. 3 at 77 showing one roller die.
  • FIG. 8 is a diagrammatic cross-section through one form of dynamic clamp.
  • FIG. 9 is a diagrammatic lateral view of the dynamic clamp of FIG. 8 showing supporting structure and one movable element particularly viewed along line 9-9 of FIG. 8.
  • FIG. 10 is an enlarged diagrammatic cross-sectional view of an alternate dynamic clamp arrangement.
  • FIG. 11 is a diagrammatic elevation of the alternate dynamic clamp arrangement of FIG. 10.
  • FIGS. 1, 2 and 3 a series of turntables 11 and 13 are shown in FIGS. 1, 2 and 3. Each turntable is supported upon a suitable base 15 and is provided with braking means 17 frictionally engaged against drum 18 by any suitable motivating means such as pneumatic cylinder 20 calibrated to place uniform back tension on wire being unwound from the turntable.
  • Any suitable motivating means such as pneumatic cylinder 20 calibrated to place uniform back tension on wire being unwound from the turntable.
  • Turntables 11 have what may be termed left-handed coils of wire mounted thereon and turntables 13 have what may be termed right-handed coils of wire mounted thereon.
  • wires pulled off from. turntables 11 are indicated as a group as wires 19, while the wires pulled off from turntables 13 are indicated as a group as wires 21.
  • Wires 19 are pulled throughfairleads 23 and wires 21 are pulled through fairleads 25, except for the wire from the last, or end, turntable in each group, to lay plates 27 and 29, respectively.
  • the wire fromthe last turntable of each group passes directly to the lay plate.
  • lay plate 27 has guide holdes in it delineating the left half of a hexagonal pattern and lay plate 29 has guide holes in it delineating the right half of a hexagonal pattern.
  • the groups of wires 19 and 21 pass through the guide holes in combined lay plate 31 whose guide holes delineate the hexagonal shape of the final strand.
  • roller die 33 comprises a base 34, and a support ring 35 in which are resiliently mounted six freely-rotatable rollers 37 alternately displaced into two radial rings each comprised of three rollers 37 so that the roller journals 39 do not interfere with each other, and arranged to delineate a hexagonal die opening.
  • one radial ring of rollers 37 is shown in dotted outline where it is partially obscured by the second radial ring of rollers.
  • Rollers 37 are resiliently urged by means of springs 43 attached to each roller mounting 45 against the wires passing therethrough to form a hexagonal strand 41.
  • hexagonal strand 41 passes through further hexagonal roller dies 47, 49, 50, and 51 which may be substantially identical in construction with roller die 33.
  • Dynamic clamp 53 may conveniently take the form of a so-called caterpillar-type capstan, or dynamic pulling clamp, having three meshing caterpillar-type tracks each clamping the two of the six flat surfaces of the hexagonal strand.
  • two dynamic clamps 135 and 137 can be used in tandem as shown diagrammatically in FIGS. 10 and 11. In the event two dynamic clamps 135 and 137 are used as shown in FIGS.
  • Dynamic clamp 53 serves to pull the wires from the turntables 11 and 13 through roller dies 33, 47, 49, and 51.
  • roller dies 33, 47, 49, 50* and 51 prevent any external wires of the strand from lagging behind, such as might occur around the inner perimeter of a solid die as a result of friction of the wires against such die. It will thus be seen that the combined use of a hexagonal strand clamping means and a hexagonal roller die with a hexagonal strand, enables the fabrication of parallel wire strands wherein the wires are equally stressed during manufacture of the strand and therefore precisely equal in length. It is not essential that the hexagonal strand be equilateral as an extral layer of wires may be added to any fiat of the hexagon in order to make up a strand of varying numbers of wires. It is necessary, however, that the closely-packed hexagonal structure be maintained as has been explained heretofore.
  • Dynamic clamp 53 which as illustrated in FIGS. 8 and 9 comprises one suitable form of clamping structure, is comprised of endless articulated clamping surfaces 55, 87 and 89, rotatable upon sprocket wheels 57 and 59, and driven by means of drive shaft 61, and, in the I case of articulated clamping surface 55, meshing bevel gears 63 and 65 which rotate shaft 67 upon which is mounted sprocket wheel 57.
  • Drive shaft 61 is driven through chain 69 by combined motor and gear reducer 71.
  • Gears 73, and 77 serve to rotate shafts 79 and 81 which in turn rotate shafts 83 and 85 upon which are mounted supporting sprocket wheels similar to sprocket wheel 57, and upon which the other two opposing articulated clamping surfaces 87 and 89, shown in partial section in FIG. 8, are rotated.
  • Rollers 91 are journaled on link connecting pins 93 between track links 95 and 97. It will be noted in FIG. 9 that extensions 99 on each alternate link 97 overlap similar extensions 101, shown in dotted outline, on each adjacent link 95 to enable pins 93 to connect and articulate the links.
  • Sprocket wheels 57 and 59 with their shafts are journaled in supporting plates 103 and 105 secured to end plates 107 and 109 by brackets 104.
  • Brackets 1 13 and 115 are mounted on the outside of supporting plates 103 and 105.
  • Shafts 117 pass through brackets 113 and 115 in sliding relationship therewith to support two movable inner track elements 119 and 121 which are urged inwardly by springs 123 against links 95 and 97 as they pass along the parallel-wire strand 41 to urge the clamping faces of the links 95 and 97 against the parallel wire strand as shown in FIG. 8.
  • Nuts 125 on shafts 117 prevent tracks 119 and 121 from being forced inwardly too far.
  • An upper section 127 of end plates 107 and 109 may be arranged to separate along line 129 so that one whole track assembly may be thrown back to facilitate threading of the parallel wire strand through the clamp.
  • hydraulic means may be used in place of, or in addition to, springs 123 to urge the tracks and clamping links 95 and 97 against the strand 41, and, in this case, the strand may be threaded by opening the tracks by the operation of the hydraulic means sufiiciently to allow threading to take place. If a mechanical sleeve splice on a wire passes through the dynamic clamp, first track element 119, and then track element 121 will lift to allow the splice to pass through. It will be seen that while one track is lifted the other will provide efficient clamping action so that the internal wires in the strand will not slip with respect to each other.
  • each clamp may have only one pair of articulated clamping surfaces.
  • the articulated clamping surfaces 143 and 145 of dynamic clamp 137 are turned at a 60-degree angle with respect to articulated clamping surfaces 139 and 141 of dynamic clamp as illustrated in FIG. 10.
  • Articulated clamping surfaces 139, 141, 143 and 145 are composed of connected track links 147 and 149 comparable to track links 95 and 97 of dynamic clamp 53 except that each track link carries three clamping faces engaging three sides of the hexagonal strand rather than two clamping faces as in the construction of dynamic clamp 53.
  • the construction of the two articulated clamping surfaces of dynamic clamps 135 and 137 are substantially the same as that of three-track dynamic clamp 53 and the same part numbers have been used where applicable in the figures.
  • a securing material 128 As the parallel wire strand is drawn through the roller dies it is bound at intervals with a securing material 128 at binding stations located between the roller dies. This may be done by stopping the strand every few feet and applying suitable tape manually at points between adjacent roller dies, or alternatively a suitable mechanical traveling taping device may be used to tape the strand while the strand is moving. When a mechanical taping device is used it will be possible to use fewer roller dies. If manual taping is done it may be desired to increase the number of roller dies in order to increase the number of taping stations. Suitable variations will occur to those skilled in the art. Normally taping the strand at threefoot intervals will be found effective in maintaining the strand wires in a compact cross-sectional shape during subsequent strand evolutions such as reeling and erection.
  • a tape which has been found very suitable is a rayon-reinforced plastic tape After the strand is drawn through dynamic clamp 53, 5 wherein a rayon yarn or filament reinforcing is mounted firmly secured between the extended clamping surfaces in an acetate or polyester film matrix, and a rubber 55, 87 and 89 it is passed to take-up 157 where it is resin backing provides adhesion. Tape of such description reeled onto a large-diameter reel 159.
  • Unsuitable vinyl plastic tape 5 11 10%;; /52 90. 5 23 135. 25 10 1275 10% at 87. 0 22% 137. 15 15 ,5 10% 4 s5. 7 2255 135. 25 20 19MB 11 ,5 87.6 2352 25 23 123.75
  • a motor 169 operates reel 159 through appropriate gearing in gear reducer 17 1, chain 173, clutch and brake disk 177.
  • a parallel wire strand may be reeled effectively if the strand is bound at intervals as described above with a resilient securing means which will stretch sufiiciently to allow the strand to open up slightly as it is reeled, but insufficiently to allow the wires in the strand to become a loose bundle of wires, and, in addition, if the strand is rotated or allowed to rotate in alternate directions about its own axis through a range of approximately 270 degrees as it is reeled. It is not necessary to actively rotate the strand, since effective, though somewhat uneven, rotation will be obtained by merely allowing the strand free rein to rotate of its own accord.
  • the binding tape must have sufiicient strength so that it will not break as it confines the wires of the strand during reeling, and it must have a maximum stretch of not over about 10% in order that it can permit the wires to open or spread sufficiently to adjust the stresses in the strand during reeling, without at the same time
  • a satisfactory parallel wire strand can be fabricated according to the present invention by first clamping the leading ends of the wires into a hexagonal strand shape by means of a suitable hexagonal clamp and then drawing the strand through the roller die 33 and the succeeding roller dies by means of a towing line attached to the clamp.
  • a socket may be attached to the end of the strand and the towing line attached thereto for drawing the strand forward.
  • any reeling operation be isolated in some manner from the forming operation so that the strand distortions and stresses incident to bending of the strand during reeling will have no disturbing effect on the wires at the forming die. Such isolation may be attained if the reeling operation is separated from the die by an appropriate distance sufficient to effectively separate the two operations. Alternatively, die forming and reeling can be done in separate operations. It will readily be understood that this is inconvenient, particularly if the two separate operations are resorted to and the strands are very long.
  • Fabrication and reeling of the strand may be done as a continuous unitary operation if a hexagonal parallel wire strand is formed in a hexagonal die, and then passed through a hexagonal dynamic clamp, as illustrated, to the reel.
  • the dynamic clamp effectively isolates the fabrication operation from the reeling operation so that the reeling of the strand does not adversely afiFect the fabrication. It is most satisfactory if this is done by means of a hexagonal dynamic clamp which is also a capstan such as a caterpillar-type capstan as illustrated in FIGS. 8 and 9, or 10 and 11.
  • the effective isolation of the two operations is provided by the combined use of a hexagonal dynamic clamp with a hexagonal strand so that the wires of the strand are securely gripped and prevented from moving longitudinally relative to each other in the forming section of the apparatus due to the stresses incident to bending the strand on the reel.
  • the strand is allowed, or encouraged, to rotate about its own axis in alternating directions as may be seen in FIGS. 4 and 5, as it passes onto reel 159, Where, as may be seen in FIG. 5, it is spooled alternately from side to side on the reel in as many layers as may be required.
  • the alternating strand rotation, and the resilience of the tape securing the strand relieve the distortions and stresses incident to reeling the strand and allow the strand to be reeled without damage.
  • the strand must not be hampered in commencing to rotate as it approaches the reel.
  • Wires 19 derived from turntables 11 upon which left-hand wound coils are mounted will tend to have a cast or natural curvature opening toward the left-hand side of the apparatus, as viewed in FIG. 3, while wires 21 derived from turntables 13 will have a cast or natural curvature opening towards the right-hand side of the apparatus as viewed in FIG. 3.
  • these curvatures are maintained in the same directions as the strand is fabricated, and the finished strand, therefore, has all the Wires arranged in the strand with their natural casts or curvatures in the same direction with respect to each other as they are when on the turntables.
  • the cast of the wires is eifectively balanced in the strand, so that the strand itself has no tendency to twist or coil.
  • the leading ends of the individual wires are first clamped together with their natural casts or curvatures arranged in the same directions as the Wires are coiled on the turntables. This may be conveniently done by placing a right-angle bend in the end of each wire and securing it on a board or other flat surface by stapling, or otherwise, in the radial position which it is to maintain in the strand with respect to the other wires in order to maintain the natural curvatures of the wires in the desired opposing directions, and then attaching a portable clamp, or the dynamic clamp, around the strand a short distance away from the board. The board and the attached bent wire ends may then be severed from the end of the strand.
  • Full-strength-type socketing may be done by bending the end of the strand upwards, inserting the end in a molten-metal-type socket, spreading the individual wires, and pouring in the appropriate molten metal. It will be realized that the Wires must be securely clamped together behind the clamp before this can be done, in order that wires will not slip relative to one another during socketing. The socket may then be fastened to the reel in order to begin reeling. The wires of the fabricated strand will then still be arranged with their natural casts evenly opposed or balanced, with the result that the strand will be found to be free from all tendency to twist and coil.
  • the wire coils on the turntables 11 and 13 be respectively left-handed and right-handed coils so that the leading end of the Wires leaves the coil from the top.
  • the strand must also be securely clamped or socketed at the terminal end so that in the completed strand the wires are securely held at both ends and the balance of wire cast is not lost.
  • the cast of the wires need not all be arranged in one of two directions as illustrated, nor need each wire be grouped together with all the other wires having a cast maintained in the same direction, so long as each wire having a cast maintained in one direction is substantially balanced by another strand wire having its cast maintained in the opposite direction.
  • the wires may be mixed together with casts opposing in two, three, or four or more directions.
  • the strand and method of formation as illustrated and described has been found very desirable and practical, however.
  • Prefabricated parallel wire strands made in accordance with the present invention are extremely stable with negligible tendency to twist or curl, and when used for the construction of parallel-wire suspension bridge cables exhibit greater uniformity of individual wire lengths when suspended between the bridge towers than is normally attainable in strands spun-in-place on the bridge.
  • a parallel wire strand comprising:
  • a wire strand according to claim 1 in which all wires having a longitudinal residual bending moment disposed in one direction are grouped together in one portion of the strand cross-section and are opposed to a substantially equal number of wires having their longitu dinal residual bending moments disposed in the opposite direction grouped together in another portion of the strand cross-section.
  • a wire strand according to claim 2 in which substantially one-half the wires in the strand have a lon gitudinal residual bending moment disposed in one direc tion and are grouped in one portion of the strand crosssection and the remainder of the wires have a longitudinal residual bending moment disposed in the opposite direction and are grouped in the remainder of the strand cross-section.
  • a wire strand according to claim 4 secured at intervals with a resilient binding means having an extensibility of 5 to 10 percent and at least a 20% return to original length following stressing to of its breaking strength and a 50% return to original length following stressing to 5 0% of its breaking strength.

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  • Ropes Or Cables (AREA)
  • Winding Filamentary Materials (AREA)
  • Wire Processing (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Package Frames And Binding Bands (AREA)
  • Coils Of Transformers For General Uses (AREA)
US575038A 1966-08-25 1966-08-25 Parallel wire strand Expired - Lifetime US3526570A (en)

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Application Number Priority Date Filing Date Title
US57503866A 1966-08-25 1966-08-25
US00043464A US3855777A (en) 1966-08-25 1970-06-04 Reel of alternately rotated parallel-wire strand and method of making

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US00043464A Expired - Lifetime US3855777A (en) 1966-08-25 1970-06-04 Reel of alternately rotated parallel-wire strand and method of making

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US00043464A Expired - Lifetime US3855777A (en) 1966-08-25 1970-06-04 Reel of alternately rotated parallel-wire strand and method of making

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919762A (en) * 1972-08-05 1975-11-18 Wolfgang Borelly Process for the manufacture of parallel wire strands for bridges and the like by winding and unwinding
US4192057A (en) * 1972-08-05 1980-03-11 Borrelly Wolfgang Process and apparatus for the production of corrosion protection for cables made of parallel wire strands
US4434608A (en) 1981-01-15 1984-03-06 Trefilarbed Drahtwerk Koln Gmbh Method and an apparatus for manufacturing strands from wires or ropes from strands
US4459799A (en) * 1982-04-09 1984-07-17 Les Cables De Lyon Quad guide device for guiding quads to a telephone cable stranding machine
US5400584A (en) * 1993-09-29 1995-03-28 Tokyo Roe Mfg. Co., Ltd. Cable manufacturing method
US5414988A (en) * 1991-11-04 1995-05-16 Kabelmetal Electro Gmbh Device for twisting rope-shaped material with changing twist direction
US20080250631A1 (en) * 2007-04-14 2008-10-16 Buckley David L Method and device for handling elongate strength members
WO2012142004A2 (en) 2011-04-12 2012-10-18 Lambert Walter L Parallel wire cable
US8464497B2 (en) 2011-07-13 2013-06-18 Ultimate Strength Cable, LLC Stay cable for structures
US20180100278A1 (en) * 2015-12-10 2018-04-12 Jiangsu Fasten Steel Cable Co., Ltd. Method for fabricating wire strand for main cable of suspension bridge
CN120117469A (zh) * 2025-05-08 2025-06-10 优易电缆(张家港)有限公司 全自动电缆绕线机

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JPS51150321U (enrdf_load_html_response) * 1975-05-26 1976-12-01
JPS52128113U (enrdf_load_html_response) * 1976-03-26 1977-09-29
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US4311002A (en) * 1977-09-22 1982-01-19 Kabel Metallwerke Ghh Forming stranded stock
US4413469A (en) * 1981-03-23 1983-11-08 Allied Corporation Method of making low crosstalk ribbon cable
EP0166842A1 (fr) * 1984-07-05 1986-01-08 Dario Moranduzzo S.R.L. Machine pour produire continuellement des torons rigides, frangés, spécialement pour les branches des abres de Noel artificiels
JPS6279964U (enrdf_load_html_response) * 1985-11-08 1987-05-22
US6656104B1 (en) * 1999-11-22 2003-12-02 Mark Forrester Method and apparatus for winding spooled materials
US9220514B2 (en) 2008-02-28 2015-12-29 Smith & Nephew, Inc. System and method for identifying a landmark
DE102014101833B4 (de) * 2013-02-13 2016-08-25 Viktor Alexandrovich Fokin Verfahren zum Herstellen eines Drahtseils
US9758340B1 (en) * 2013-10-08 2017-09-12 Southwire Company, Llc Capstan and system of capstans for use in spooling multiple conductors onto a single reel
DE102017205014B4 (de) 2017-03-24 2022-07-14 Leoni Kabel Gmbh Verlitzmaschine, Verfahren zur Herstellung einer Litze und Litze

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US1904885A (en) * 1930-06-13 1933-04-18 Western Electric Co Capstan
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US3352098A (en) * 1964-12-23 1967-11-14 American Chain & Cable Co Multi-element wire line having compacted strands
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US3919762A (en) * 1972-08-05 1975-11-18 Wolfgang Borelly Process for the manufacture of parallel wire strands for bridges and the like by winding and unwinding
US4192057A (en) * 1972-08-05 1980-03-11 Borrelly Wolfgang Process and apparatus for the production of corrosion protection for cables made of parallel wire strands
US4434608A (en) 1981-01-15 1984-03-06 Trefilarbed Drahtwerk Koln Gmbh Method and an apparatus for manufacturing strands from wires or ropes from strands
US4459799A (en) * 1982-04-09 1984-07-17 Les Cables De Lyon Quad guide device for guiding quads to a telephone cable stranding machine
US5414988A (en) * 1991-11-04 1995-05-16 Kabelmetal Electro Gmbh Device for twisting rope-shaped material with changing twist direction
US5400584A (en) * 1993-09-29 1995-03-28 Tokyo Roe Mfg. Co., Ltd. Cable manufacturing method
US20080250631A1 (en) * 2007-04-14 2008-10-16 Buckley David L Method and device for handling elongate strength members
US7891070B2 (en) 2007-04-14 2011-02-22 Air Logistics Corporation Method for handling elongate strength members
US9743764B2 (en) 2011-04-12 2017-08-29 Ultimate Strength Cable, LLC Transportation of parallel wire cable
US10376051B2 (en) 2011-04-12 2019-08-13 Ultimate Strength Cable, LLC Transportation of parallel wire cable
US11287065B2 (en) 2011-04-12 2022-03-29 Ultimate Strength Cable, LLC Manufacturing of parallel wire cable
US11187352B2 (en) * 2011-04-12 2021-11-30 Ultimate Strength Cable, LLC Parallel wire cable
US20140301863A1 (en) * 2011-04-12 2014-10-09 Ultimate Strength Cable, LLC Stay Cable for Structures
US9458642B2 (en) * 2011-04-12 2016-10-04 Ultimate Strength Cable, LLC Stay cables for structures
WO2012142004A2 (en) 2011-04-12 2012-10-18 Lambert Walter L Parallel wire cable
US10962145B2 (en) * 2011-04-12 2021-03-30 Ultimate Strength Cable, LLC Transportation of parallel wire cable
US20180184805A1 (en) * 2011-04-12 2018-07-05 Ultimate Strength Cable, LLC Parallel Wire Cable
US10149536B2 (en) 2011-04-12 2018-12-11 Ultimate Strength Cable, LLC Transportation of Parallel wire cable
US10278493B2 (en) * 2011-04-12 2019-05-07 Ultimate Strength Cable, LLC Parallel wire cable
WO2012142004A3 (en) * 2011-04-12 2013-04-04 Lambert Walter L Parallel wire cable
US20190313793A1 (en) * 2011-04-12 2019-10-17 Ultimate Strength Cable, LLC Transportation of Parallel Wire Cable
US10508644B2 (en) 2011-04-12 2019-12-17 Ultimate Strength Cable, LLC Stay cable for structures
US10955069B2 (en) 2011-04-12 2021-03-23 Ultimate Strength Cable, LLC Parallel wire cable
US10758041B2 (en) 2011-04-12 2020-09-01 Ultimate Strength Cable, LLC Parallel wire cable
US8474219B2 (en) 2011-07-13 2013-07-02 Ultimate Strength Cable, LLC Stay cable for structures
US8464497B2 (en) 2011-07-13 2013-06-18 Ultimate Strength Cable, LLC Stay cable for structures
US11319723B2 (en) 2011-07-13 2022-05-03 Ultimate Strength Cable, LLC Stay cable for structures
US10584453B2 (en) * 2015-12-10 2020-03-10 Jiangsu Fasten Steel Cable Co., Ltd. Method for fabricating wire strand for main cable of suspension bridge
US20180100278A1 (en) * 2015-12-10 2018-04-12 Jiangsu Fasten Steel Cable Co., Ltd. Method for fabricating wire strand for main cable of suspension bridge
CN120117469A (zh) * 2025-05-08 2025-06-10 优易电缆(张家港)有限公司 全自动电缆绕线机

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JPS4836705B1 (enrdf_load_html_response) 1973-11-06
DE1685829A1 (de) 1971-04-29
FI46532C (fi) 1973-04-10
NO133110C (enrdf_load_html_response) 1976-03-10
CH465444A (de) 1968-11-15
ES344427A1 (es) 1968-12-16
DE1685829B2 (de) 1974-07-25
DK133058C (da) 1976-08-30
JPS4913943B1 (enrdf_load_html_response) 1974-04-04
JPS4924822B1 (enrdf_load_html_response) 1974-06-26
JPS4924821B1 (enrdf_load_html_response) 1974-06-26
US3855777A (en) 1974-12-24
FI46532B (fi) 1973-01-02
SU486517A3 (ru) 1975-09-30
SE325216B (enrdf_load_html_response) 1970-06-22
DE1781458B1 (de) 1978-03-30
JPS4940019B1 (enrdf_load_html_response) 1974-10-30
DE1685829C3 (de) 1975-03-20
DK133058B (da) 1976-03-15
DE1781458C2 (de) 1978-11-16
NO133110B (enrdf_load_html_response) 1975-12-01

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