US1992707A - Manufacture of ropes and the like - Google Patents

Manufacture of ropes and the like Download PDF

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Publication number
US1992707A
US1992707A US514301A US51430131A US1992707A US 1992707 A US1992707 A US 1992707A US 514301 A US514301 A US 514301A US 51430131 A US51430131 A US 51430131A US 1992707 A US1992707 A US 1992707A
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US
United States
Prior art keywords
core
wires
rope
covering
ropes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US514301A
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English (en)
Inventor
Lloyd Henry David Llewellyn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WHITECROSS Co Ltd
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WHITECROSS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WHITECROSS Co Ltd filed Critical WHITECROSS Co Ltd
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Publication of US1992707A publication Critical patent/US1992707A/en
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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • D07B3/06—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position and are spaced radially from the axis of the machine, i.e. basket or planetary-type stranding machine

Definitions

  • This invention relates to the manufacture of ropes and the like, and more especially to the construction of the locked coil wire ropes such as used for colliery winding gear, sinking, "or other ropes built on the concentric or multiple strand pattern, more particularly of the nonrotating type.
  • the layers of the core that is the built-up concentric strand on which the final cover of locked wires, or the like is to be placed
  • the outer covering wires laid in the opposite direction exert a stronger untwisting moment than the wires of the core when the rope is free from the machine in which it has been made, and cause a revolution of the rope upon its own axis in the direction of untwisting the outer covering wires, with a corresponding twisting up of the core, until the whole rope is in balance, and no further movement takes place.
  • the core is made cross-laid, that is some layers to one hand and other layers to the other hand, either alternately or in pairs or in any other way, the core is already partly balanced before the outer covering wires are laid on, and offers even less resistance than in the previous case to the tendency to untwist of the outer covering wires.
  • the object of the present invention is to provide a method for making ropes which are free from or substantially free from the difliculties described in the case of such ropes, whether small or large, and whether working under high or low stresses, and is based on the prevention of the untwisting of the covering wires when the rope is first released off its reel after being manufactured, or after being, put to work.
  • the invention consists in a method for the manufacture of ropes and the like according to which the tendency of the core to untwist is increased by putting extra turns into it by rotation whilst the outer wires or the like are laid around it.
  • the invention also consists in a process for the manufacture of ropes and the like in which extra turns or twists are given to the core whilst it is in the process'of having the final outer covering of .,or in any other way.
  • the invention also consists in a modification of the process according to the preceding paragraph in which the layers of wire or the like near thecentre of the core are laid the opposite way to the rest.
  • the invention also consists in a process according to any of the preceding four paragraphs in which the core is wound back after each layer is applied so that the starting end for each concentric layer is the same.
  • the invention also consists in a process according to any of the preceding five paragraphs in which extra turns are applied to the core after it is made, to remove the natural spring of the core wires and reduce the outside diameter of the core by an appreciable amount of several thousandths of an inch, so as to form a solid bed for the outer covering wires to lie upon. 7
  • the invention also consists in apparatus for carrying into effect processes'according to any of the preceding six paragraphs comprising a covering machine and acore rotating machine.
  • the invention alsoconsists in an apparatus according to the preceding paragraph provided with an additional appliance for winding or rewinding the core on to the core twisting gear for the manufacture of ropes and the like substantially as herein described.
  • the invention also consists in ropes or the like such as may be made by the processes or with apparatus substantially as herein described, including ropes or the like which do not substantially revolve or tend to revolve when first released from the reel after being made or subsequently in a direction which untwists or tends to untwist the covering wires, but may even revolve in a direction to twist up the covering wires and so shorten the lay and tighten the outer covering wires on the core.
  • Figure 1 is an elevation of an arrangement according to one form 01 the present invention
  • FIG. 3 is an end view of Figure 1, looking from right to left, the parts in front of the part 21 (referred to below) having been removed;
  • Figure 4 is an end view of Figure 1 lookingfrom left to right of part 21, the part 21 and the rest of the machine to the right of it'in Figure 1 having been removed.
  • a covering machine 1 of the usual disc or other type a core carrying drum 2 mounted in a rotatable carriage 3, carried in a bearing '4 at the rear end, and on trunnion bearings a the front end, as shown.
  • the core carrying machine is provided with suitable gear 5 for revolving the'carriage, and the core carrying drum in either direction, and also provided with another set of gears 6 for rotating the core carrying drum in the carriage when in-winding the core.
  • the core drum rotating gear is driven independently of the frame rotating gear by means of a shaft which passes through the shaft carrying the latter.
  • a shaft which passes through the shaft carrying the latter.
  • This is efiected as follows:--Wheel 5 is attached to the end of the shaft forming part of the core drum carrying frame, and serves to rotate the whole frame through the worm and worm wheel illustrated.
  • Wheel 6 is attached to a shaft which passes through the main frame shaft justreferred to, using the latter as a bearing, and driving through a train of wheels to the core drum rotating gear.
  • the covering machine 1 has the usual draw-off drum 7 and a drum 8 for winding on the finished ropes, with means for rotating the various elements.
  • the core drum 2 carries the complete core 11, that is the whole of the inner body of the rope ready to be covered by outer wires 12, carried by the bobbins 13 of the covering machine 1 to form the complete rope.
  • the core 11 is drawn off from the core drum 2 by the draw-off drum '7, and passes through the hollow centre shaft 14 of the covering machine 1. From this hollow shaft 14 the core 11 with wires 12 as a covering passes through the closing die box 9, where the formation of the rope 10 is completed;
  • the draw-off drum '7 causes the core 11 with the covering wires 12 to be drawn in the direction of the arrow 15 through the die box 9, whilst discs 1 of the covering machine carrying the fixed bobbins 13 revolve around the core 11 so as to lay the wires 12 as a covering on to the core 11 in the die box 9 forming the rope. From the draw-off drum 7 the rope passes into the takeup reel 8 mounted on shaft 16 driven by any suitable means such as gearing or chain drive with appropriate slipping clutch.
  • the core drum may be revolving in a clockwise direction and the machine 1 revolving in a counter-clockwise direction, as diagrammatically illustrated by the arrows 17 and 18 respectively.
  • the method of revolving the core on its axis in the opposite direction to that in which the covering bobbins are revolving in the machine will twist the core more intensely in the direction in which it has already been laid up in stranding the several layers.
  • the revolving of the core drum 2 by way of the frame 3 need not be and is preferably not at the same speed as the revolving of the machine 1 carrying the covering bobbins 13, the difference between the speeds being modified as desired according to the construction and type of rope'being made.
  • a suitable catch or stop device may be employed.
  • a brake drum is introduced as shown at 19, with adjustable brake-shoes to enable the tension to be regulated according to the size of rope being made. While this brake 19 is in operation, the pull due to the draw-off drum '7 is substantially resisted by flanged rollers 20 co-operating with disc 21, which is associated with the frame 3.
  • the brake-drum is attached to the side of drum 2 with the outer contracting members attached to the side of the frame, with suitable regulating gear for giving definite tensions as the drurn 2 revolves upon its shaft 22.
  • the effect of rotating the core by rotating the frame 3 is to impart to the core 11 a twist which is in counter direction or in opposition to the wires 12 which are being placed on the core in the opposite angle or hand of lay.
  • the rotation of the main covering machine 1 is provided by main driving wheel 23 keyed to the hollow central shaft and driven through suitable trains of gearing from motor or line shaft by belt, clutch or other-suitable means.
  • This rotation of the core upon its own axis has the effect of reducing slightly the diameter of the core by a few thousandths of an inch, this resulting or tending to result in a more solid contact between the separate layers of wires in the core and between the surface of the core and the outer covering wires.
  • I mount the core in a special carrier at the back of the final covering machine, and as close thereto as possible, this carrier being arranged with its central axis coincident with the centre line of the closing machine, and with an arrangement for revolving the carrier on its axis at the same time as the core is paying off from the drum placed in the centre of the carrier; means being also provided to put tension upon the core as it is being drawn off and covered by the covering machine.
  • the core has a very much greater tendency to untwist, and therefore a much greater resistance to the tendency of the covering wires to untwist in the opposite direction.
  • the tendency of the core to untwist may be sumciently increased in this way against the action of the covering wires in their tendency to untwist to create even an opposite effect, i. e., to make the rope revolve when first released from its reel after being made in a direction which twists up the covering wires, and so shortens the lay and makes the cover solid and resistant to the high stresses encountered in working.
  • the layers of the core may be made of wires of any suitable section, for example, round, flat, segmental, half lock or full lock. Suitable half lock layers may be formed from wires of round and of rail sections alternating.
  • the invention is applicable to all kinds of nonspinning or non-rotating ropes such as round strand ropes 'with two or more layers, usually t'ermed multiple strand construction, and for example the flat strand non-rotating steel wire ropes in which there is a core with one or more outer layers of fiat strands forming the outside of the core and placed in position before the process of putting extra turns in the core whilst the latter is being covered by a final single outer layer of fiat strands.
  • nonspinning or non-rotating ropes such as round strand ropes 'with two or more layers, usually t'ermed multiple strand construction, and for example the flat strand non-rotating steel wire ropes in which there is a core with one or more outer layers of fiat strands forming the outside of the core and placed in position before the process of putting extra turns in the core whilst the latter is being covered by a final single outer layer of fiat strands.
  • the core shall be wound back on to the carrier bobbin after each layer is applied so that the starting end for each concentric covering layer may be the same. 7
  • the object of this operation is to smooth out any slackness that may occur in any layer, through any cause such as may occur in the closing dies,
  • Cores for the purposes of the present invention are preferably all laid'in one direction or to one hand as distinct from what is called cross-laid, that is, some layers toone hand and other layers to another hand, eith'er alternatively or in pairs, or in any other way, although, if desired, the layers of wire near the centre of the core may be laid in an opposite direction to the rest.
  • a ma for the manufacture of ropes and the like comprising the step of positively holding and positively rotating the core of the rope to effect over-twisting and laying covering wires around it when in such condition in a direction opposite to and with less twist than that of the 'layers of the core for preventing untwisting of the outer covering layer of the rope due to the untwisting reaction of the core.

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  • Ropes Or Cables (AREA)
US514301A 1930-02-08 1931-02-07 Manufacture of ropes and the like Expired - Lifetime US1992707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4362/30A GB354329A (en) 1930-02-08 1930-02-08 Improvements in and relating to the manufacture of ropes and the like

Publications (1)

Publication Number Publication Date
US1992707A true US1992707A (en) 1935-02-26

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ID=9775731

Family Applications (1)

Application Number Title Priority Date Filing Date
US514301A Expired - Lifetime US1992707A (en) 1930-02-08 1931-02-07 Manufacture of ropes and the like

Country Status (4)

Country Link
US (1) US1992707A (ko)
BE (1) BE377192A (ko)
FR (1) FR725113A (ko)
GB (1) GB354329A (ko)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444001A (en) * 1944-06-28 1948-06-22 Arens Controls Apparatus for making transmission cables
US2462515A (en) * 1947-10-09 1949-02-22 Western Electric Co Method of and apparatus for braiding
US2537435A (en) * 1945-03-12 1951-01-09 Borg George W Corp Resistance element
US2802328A (en) * 1953-04-02 1957-08-13 Us Rubber Co Cable making machine
US2981049A (en) * 1959-07-13 1961-04-25 Western Electric Co Apparatus for making multi-unit cable
US3097472A (en) * 1963-07-16 Apparatus for making rope strand
US3124927A (en) * 1964-03-17 Method of making wire rope
US3140576A (en) * 1961-07-29 1964-07-14 Delore Sa Geoffroy Cable making apparatus
US3234722A (en) * 1963-04-12 1966-02-15 American Chain & Cable Co Compacted stranded cable

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097472A (en) * 1963-07-16 Apparatus for making rope strand
US3124927A (en) * 1964-03-17 Method of making wire rope
US2444001A (en) * 1944-06-28 1948-06-22 Arens Controls Apparatus for making transmission cables
US2537435A (en) * 1945-03-12 1951-01-09 Borg George W Corp Resistance element
US2462515A (en) * 1947-10-09 1949-02-22 Western Electric Co Method of and apparatus for braiding
US2802328A (en) * 1953-04-02 1957-08-13 Us Rubber Co Cable making machine
US2981049A (en) * 1959-07-13 1961-04-25 Western Electric Co Apparatus for making multi-unit cable
US3140576A (en) * 1961-07-29 1964-07-14 Delore Sa Geoffroy Cable making apparatus
US3234722A (en) * 1963-04-12 1966-02-15 American Chain & Cable Co Compacted stranded cable

Also Published As

Publication number Publication date
FR725113A (fr) 1932-05-09
BE377192A (ko)
GB354329A (en) 1931-08-10

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