US3374619A - Torque balanced rope - Google Patents

Torque balanced rope Download PDF

Info

Publication number
US3374619A
US3374619A US545726A US54572666A US3374619A US 3374619 A US3374619 A US 3374619A US 545726 A US545726 A US 545726A US 54572666 A US54572666 A US 54572666A US 3374619 A US3374619 A US 3374619A
Authority
US
United States
Prior art keywords
rope
strands
lay
torque balanced
angle
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
US545726A
Inventor
William E Adams
Wilbert A Lucht
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.)
Amsted Industries Inc
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Priority to US545726A priority Critical patent/US3374619A/en
Priority to DE19671685853 priority patent/DE1685853C3/en
Priority to GB08570/67A priority patent/GB1177015A/en
Priority to BE697492D priority patent/BE697492A/xx
Priority to ES339681A priority patent/ES339681A1/en
Priority to FR104049A priority patent/FR1520299A/en
Application granted granted Critical
Publication of US3374619A publication Critical patent/US3374619A/en
Priority to US05/717,310 priority patent/USRE29537E/en
Assigned to AMSTED INDUSTRIES INC. A CORP OF DE reassignment AMSTED INDUSTRIES INC. A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNITED STATES STEEL CORPORATION A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/06Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0673Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • D07B1/068Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration characterised by the strand design
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/10Rope or cable structures
    • D07B2201/104Rope or cable structures twisted
    • D07B2201/1064Rope or cable structures twisted characterised by lay direction of the strand compared to the lay direction of the wires in the strand
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2401/00Aspects related to the problem to be solved or advantage
    • D07B2401/20Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2015Killing or avoiding twist

Definitions

  • Another object is to provide such a rope which has non-rotating characteristics.
  • FIGURE 1 is a perspective view of a 3 X 19 scale regular lay rope of our invention.
  • FIGURE 2 is an end view of a 6 x 19 seale regular lay wire rope.
  • reference numeral 1 indicates a wire rope consisting of three strands, each having a center core wire 4 surrounded by nine intermediate wires 6 and nine outer wires 8.
  • the strands 2 are formed in the usual manner except that the lay is shorter than that normally used.
  • the strands are formed, roll straightened and then stranded in a stranding machine where the strands are preferably partially preformed. We have found it advisable, and for most uses necessary, to stress relieve the formed rope. When the rope is made of steel, this is done at a temperature between 600 and 1150 F.
  • the lay of the strand in the rope is longer than that normally used and it is necessary that the angle of lay of the outer wires in each strand be at least 1% times that of the angle of lay of the strands in the rope. This is necessary in order that the torque exerted by the rope will be approximately equal to the torque exerted by the strands.
  • a rope so constructed is relatively non-rotating, with the amount of rotation being no greater than 3 per foot of length under loads of up to 75% of the breaking strength of the rope, and in many instances the amount of rotation is even as low as 1 per foot.
  • the angle of lay of the outer wires 8 is 21.8 and the angle of lay of the strands 2 is 10. For best results it is desirable that the relationship between the angles of lay be at least 2 to 1 rather than 1% to 1.
  • the rope of FIGURE 2 includes a core member 10 surrounded by six strands 12, each having a center wire 14, nine intermediate wires 16, and nine outer wires 18. Except for the lay of the wires in the strand and the lay of the strands in the rope, this rope is made in the usual manner. In other words, the strands are first formed and the strands then closed around the core 10. The strands are roll straightened and the rope stress relieved as in the first embodiment.
  • the relationship between the angle of lay of the outer wire in each strand and the angle of lay of the strand in the rope is preferably greater than in a three strand rope. In the six strand rope shown, the angle of lay of the outer wires 18 is 24.5 and the angle of lay of the strands in the rope is 7.
  • the strands may be of other constructions than those shown but will preferably be those constructions most commonly used.
  • the core shown in FIGURE 2 may be replaced by other types of cores, such as an independent wire rope core.
  • the relationships set forth above are necessary in order to obtain the desired characteristics.
  • the wires 6 and '8 are such that they tend to rotate in the direction of the arrows around the axis of wire 4, or in other words, under load they try to straighten out.
  • the strands 2 under load tend to untwist from one another in the direction of the arrows and these two torques counterbalance one another so that the wires and strands will not move out of position.
  • the wires 16 and 18 tend to rotate in the direction of the arrows and the strands 12 tend to untwist from one another in the direction of the arrows with the two torques counterbalancing each other.
  • a torque balanced regular lay rope comprising between three and six strands spiraled together, the angle of lay of the outer Wires in each strand being at least 1% times that of the angle of lay of the strands in the rope, the torque exerted by the rope being approximately equal to the torque exerted by the strands.
  • a torque balanced regular lay rope according to claim 1 in which the rope will rotate within 3 per ft. of length up to of the breaking strength.
  • a torque balanced regular lay rope according to claim 3 in which the rope will rotate within 3 per ft. of
  • a torque balanced regular lay rope according to claim 1 which consists of three strands spiraled together. 6.
  • a torque balanced regular lay rope according to claim 5 in which the rope will rotate within 3 per ft. of
  • a torque balanced regular lay rope according to claim 1 which consists of six strands spiraled together, the angle of lay of the outer wires in each strand being at least two times that of the angle of lay of the strands in the rope.
  • a torque balanced regular lay rope according to claim 8 in which the rope will rotate within 3 per ft. of length up to 75% of the breaking strength.

Landscapes

  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)

Description

March 26, 1968 w. E. ADAMS ETAL 3,374,619
TORQUE BALANCED ROPE Filed April 27. 1966 INVENTORS WILL/AM E. ADAM-90nd W/LBERT A. LUCHT By W I Attorney United States Patent ()filice 3,374,619 Patented Mar. 26, 1968 3,374,619 TORQUE BALANCED ROPE William E. Adams, Hamden, and Wilbert A. Lucllt, Orange, Conn., assignors to United States Steel Corporation, a corporation of Delaware Filed Apr. 27, 1966, Ser. No. 545,726 9 Claims. (Cl. 57--148) This invention relates to a torque balanced rope, and in particular to a regular lay rope comprising between three and six strands. There are various types of torque balanced ropes, but those of which we have knowledge are made up of a plurality of layers of strands with the strands in one layer being laid up in the opposite direction to the strands in the adjacent layer. Thus the types of rope are limited and the operation is relatively expensive because at least two laying operations are required.
It is therefore an object of our invention to provide a regular lay torque balanced wire rope in which the strands are laid up in a single laying operation.
Another object is to provide such a rope which has non-rotating characteristics.
This and other objects will be more apparent after referring to the following specification and attached drawings, in which:
FIGURE 1 is a perspective view of a 3 X 19 scale regular lay rope of our invention; and
FIGURE 2 is an end view of a 6 x 19 seale regular lay wire rope.
Referring more particularly to FIGURE 1 of the drawings, reference numeral 1 indicates a wire rope consisting of three strands, each having a center core wire 4 surrounded by nine intermediate wires 6 and nine outer wires 8. According to our invention, the strands 2 are formed in the usual manner except that the lay is shorter than that normally used. The strands are formed, roll straightened and then stranded in a stranding machine where the strands are preferably partially preformed. We have found it advisable, and for most uses necessary, to stress relieve the formed rope. When the rope is made of steel, this is done at a temperature between 600 and 1150 F. The lay of the strand in the rope is longer than that normally used and it is necessary that the angle of lay of the outer wires in each strand be at least 1% times that of the angle of lay of the strands in the rope. This is necessary in order that the torque exerted by the rope will be approximately equal to the torque exerted by the strands. We have found further that a rope so constructed is relatively non-rotating, with the amount of rotation being no greater than 3 per foot of length under loads of up to 75% of the breaking strength of the rope, and in many instances the amount of rotation is even as low as 1 per foot. In the specific rope shown in FIGURE 1, the angle of lay of the outer wires 8 is 21.8 and the angle of lay of the strands 2 is 10. For best results it is desirable that the relationship between the angles of lay be at least 2 to 1 rather than 1% to 1.
The rope of FIGURE 2 includes a core member 10 surrounded by six strands 12, each having a center wire 14, nine intermediate wires 16, and nine outer wires 18. Except for the lay of the wires in the strand and the lay of the strands in the rope, this rope is made in the usual manner. In other words, the strands are first formed and the strands then closed around the core 10. The strands are roll straightened and the rope stress relieved as in the first embodiment. The relationship between the angle of lay of the outer wire in each strand and the angle of lay of the strand in the rope is preferably greater than in a three strand rope. In the six strand rope shown, the angle of lay of the outer wires 18 is 24.5 and the angle of lay of the strands in the rope is 7.
It will be understood that the strands may be of other constructions than those shown but will preferably be those constructions most commonly used. Also, the core shown in FIGURE 2 may be replaced by other types of cores, such as an independent wire rope core. However, regardless of the construction of the strands, the relationships set forth above are necessary in order to obtain the desired characteristics.
The wires 6 and '8 are such that they tend to rotate in the direction of the arrows around the axis of wire 4, or in other words, under load they try to straighten out. On the other hand, the strands 2 under load tend to untwist from one another in the direction of the arrows and these two torques counterbalance one another so that the wires and strands will not move out of position. In like manner the wires 16 and 18 tend to rotate in the direction of the arrows and the strands 12 tend to untwist from one another in the direction of the arrows with the two torques counterbalancing each other.
While two embodiments of our invention have been shown and described it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.
We claim:
1. A torque balanced regular lay rope comprising between three and six strands spiraled together, the angle of lay of the outer Wires in each strand being at least 1% times that of the angle of lay of the strands in the rope, the torque exerted by the rope being approximately equal to the torque exerted by the strands.
2. A torque balanced regular lay rope according to claim 1 in which the rope will rotate within 3 per ft. of length up to of the breaking strength.
3. A torque balanced regular lay rope according to claim 1 in which the rope is stress relieved at a temperature of between 600 and 1150 F.
4. A torque balanced regular lay rope according to claim 3 in which the rope will rotate within 3 per ft. of
length up to 75 of the breaking strength.
5. A torque balanced regular lay rope according to claim 1 which consists of three strands spiraled together. 6. A torque balanced regular lay rope according to claim 5 in which the rope will rotate within 3 per ft. of
length up to 75 of the breaking strength.
7. A torque balanced regular lay rope according to claim 6 in which the rope is stress relieved at a temperature of between 600 and 1150 F.
8. A torque balanced regular lay rope according to claim 1 which consists of six strands spiraled together, the angle of lay of the outer wires in each strand being at least two times that of the angle of lay of the strands in the rope.
9. A torque balanced regular lay rope according to claim 8 in which the rope will rotate within 3 per ft. of length up to 75% of the breaking strength.
References Cited UNITED STATES PATENTS 952,161 3/1910 Whyte 57-147 1,429,529 9/1922. 'Pyburn 57-145 1,885,821 11/1932 Green -57-147 2,147,118 2/1939 Ellsworth et al 57-447 2,372,142 3/1945 Warren 57-147 2,399,157 4/1946 Warren 57 147 3,035,403 5/1962 Grimes 61 al. 57-145 3,092,956 6/1963 Naysmith 57 147 XR 3,201,930 8/1965 Stirling 57-144 FRANK J. COHEN, Primary Examiner. D. E. WATKINS, Assistant Examiner.

Claims (1)

1. A TORQUE BALANCED REGULAR LAY ROPE COMPRISING BETWEEN THREE AND SIX STRANDS SPIRALED TOGETHER, THE ANGLE OF LAY OF THE OUTER WIRES IN EACH STRAND BEING AT LEAST 13/4 TIMES THAT OF THE ANGLE OF LAY OF THE STRANDS IN THE ROPE, THE TORQUE EXERTED BY THE ROPE BEING APPROXIMATELY EQUAL TO THE TORQUE EXERTED BY THE STRANDS.
US545726A 1966-04-27 1966-04-27 Torque balanced rope Expired - Lifetime US3374619A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US545726A US3374619A (en) 1966-04-27 1966-04-27 Torque balanced rope
DE19671685853 DE1685853C3 (en) 1966-04-27 1967-04-19 Process for the manufacture of a wire rope with little twist and tension
GB08570/67A GB1177015A (en) 1966-04-27 1967-04-21 Torque Balanced Metal Wire Rope
ES339681A ES339681A1 (en) 1966-04-27 1967-04-24 Torque balanced rope
BE697492D BE697492A (en) 1966-04-27 1967-04-24
FR104049A FR1520299A (en) 1966-04-27 1967-04-25 Torque balanced cable
US05/717,310 USRE29537E (en) 1966-04-27 1976-08-24 Torque balanced rope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545726A US3374619A (en) 1966-04-27 1966-04-27 Torque balanced rope

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/717,310 Reissue USRE29537E (en) 1966-04-27 1976-08-24 Torque balanced rope

Publications (1)

Publication Number Publication Date
US3374619A true US3374619A (en) 1968-03-26

Family

ID=24177329

Family Applications (2)

Application Number Title Priority Date Filing Date
US545726A Expired - Lifetime US3374619A (en) 1966-04-27 1966-04-27 Torque balanced rope
US05/717,310 Expired - Lifetime USRE29537E (en) 1966-04-27 1976-08-24 Torque balanced rope

Family Applications After (1)

Application Number Title Priority Date Filing Date
US05/717,310 Expired - Lifetime USRE29537E (en) 1966-04-27 1976-08-24 Torque balanced rope

Country Status (4)

Country Link
US (2) US3374619A (en)
BE (1) BE697492A (en)
ES (1) ES339681A1 (en)
GB (1) GB1177015A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208167A1 (en) * 1972-11-22 1974-06-21 Uss Eng & Consult
US6619240B2 (en) * 1998-04-20 2003-09-16 Equibrand Corporation Lariat, lariat rope body, method and apparatus
EP2407592A3 (en) * 2010-07-12 2012-02-15 Hitachi Ltd. Elevator wire rope
CN102747625A (en) * 2012-06-20 2012-10-24 贵州钢绳股份有限公司 Steel wire rope for aviation
US8438826B2 (en) 2010-10-11 2013-05-14 Wireco Worldgroup Inc. Four strand blackened wire rope
US9506188B2 (en) 2013-03-14 2016-11-29 Wireco Worldgroup, Inc. Torque balanced hybrid rope
CN115045129A (en) * 2022-07-20 2022-09-13 济宁长龙钢丝绳有限公司 Anti-torsion steel wire rope for climbing-free fan tower cylinder and manufacturing method thereof
CN115679726A (en) * 2023-01-05 2023-02-03 青岛鲁普耐特绳网研究院有限公司 Anti-biological-adhesion plastic-coated steel cable for buoy, preparation method thereof and buoy anchoring system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1565066A (en) 1976-09-07 1980-04-16 Dunlop Ltd Steel cords
US4732831A (en) 1986-05-01 1988-03-22 E. I. Du Pont De Nemours And Company Xeroprinting with photopolymer master
DE3632298A1 (en) * 1986-09-23 1988-04-07 Saar Gmbh Drahtseilwerk WIRE ROPE FOR A HANGING INSERT OVER A LARGE HEIGHT DIFFERENCE, IN PARTICULAR CONVEYOR BASKET ROPE, DEEP ROPE ROPE OR ROPEWAY ROPE
US6260343B1 (en) * 1998-05-01 2001-07-17 Wire Rope Corporation Of America, Incorporated High-strength, fatigue resistant strands and wire ropes
MY166678A (en) * 2010-11-05 2018-07-18 Bridon Int Ltd Compacted hybrid elevator rope

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952161A (en) * 1906-11-01 1910-03-15 George S Whyte Non-rotating wire rope.
US1429529A (en) * 1920-10-11 1922-09-19 Pyburn George Compound wire rope
US1885821A (en) * 1931-10-03 1932-11-01 Roeblings John A Sons Co Wire rope and method of making the same
US2147118A (en) * 1938-01-15 1939-02-14 American Steel & Wire Co Wire rope center
US2372142A (en) * 1940-06-19 1945-03-20 Jr Richard F Warren Lubricated rope
US3035403A (en) * 1961-06-06 1962-05-22 United States Steel Corp Stranded wire structures
US3092956A (en) * 1960-09-08 1963-06-11 Macwhyte Company 7-strand wire rope
US3201930A (en) * 1963-05-13 1965-08-24 Stirling James Rope strand and method for making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH170415A (en) 1933-09-14 1934-07-15 Salvisberg Theodor Torsion-free stranded rope.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952161A (en) * 1906-11-01 1910-03-15 George S Whyte Non-rotating wire rope.
US1429529A (en) * 1920-10-11 1922-09-19 Pyburn George Compound wire rope
US1885821A (en) * 1931-10-03 1932-11-01 Roeblings John A Sons Co Wire rope and method of making the same
US2147118A (en) * 1938-01-15 1939-02-14 American Steel & Wire Co Wire rope center
US2372142A (en) * 1940-06-19 1945-03-20 Jr Richard F Warren Lubricated rope
US2399157A (en) * 1940-06-19 1946-04-23 Jr Richard F Warren Rope
US3092956A (en) * 1960-09-08 1963-06-11 Macwhyte Company 7-strand wire rope
US3035403A (en) * 1961-06-06 1962-05-22 United States Steel Corp Stranded wire structures
US3201930A (en) * 1963-05-13 1965-08-24 Stirling James Rope strand and method for making same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208167A1 (en) * 1972-11-22 1974-06-21 Uss Eng & Consult
US6619240B2 (en) * 1998-04-20 2003-09-16 Equibrand Corporation Lariat, lariat rope body, method and apparatus
EP2407592A3 (en) * 2010-07-12 2012-02-15 Hitachi Ltd. Elevator wire rope
US8418433B2 (en) 2010-07-12 2013-04-16 Hitachi, Ltd. Elevator wire rope
US8438826B2 (en) 2010-10-11 2013-05-14 Wireco Worldgroup Inc. Four strand blackened wire rope
CN102747625A (en) * 2012-06-20 2012-10-24 贵州钢绳股份有限公司 Steel wire rope for aviation
US9506188B2 (en) 2013-03-14 2016-11-29 Wireco Worldgroup, Inc. Torque balanced hybrid rope
CN115045129A (en) * 2022-07-20 2022-09-13 济宁长龙钢丝绳有限公司 Anti-torsion steel wire rope for climbing-free fan tower cylinder and manufacturing method thereof
CN115679726A (en) * 2023-01-05 2023-02-03 青岛鲁普耐特绳网研究院有限公司 Anti-biological-adhesion plastic-coated steel cable for buoy, preparation method thereof and buoy anchoring system

Also Published As

Publication number Publication date
DE1685853A1 (en) 1971-04-29
DE1685853B2 (en) 1975-10-09
GB1177015A (en) 1970-01-07
USRE29537E (en) 1978-02-14
ES339681A1 (en) 1968-05-16
BE697492A (en) 1967-10-24

Similar Documents

Publication Publication Date Title
US3374619A (en) Torque balanced rope
US4449012A (en) Overhead cable with tension-bearing means
US2604509A (en) Nonspinning armored electric cable
US4412474A (en) Fiber cordage
US3451305A (en) Braided steel leader construction
US3391531A (en) Strand and rope
US3295310A (en) Wire rope particularly useful for independent wire rope core
US3584139A (en) Torque-balanced communications cable
US4365467A (en) Rotation resistant wire rope
US4809492A (en) Torsionally balanced wire rope or cable
US2241955A (en) Metallic rope and cable
US20100043381A1 (en) Multi-strand steel wire rope
US1348033A (en) Wire rope
US3274846A (en) Flexible cable
US3306022A (en) Wire rope
US2167098A (en) Strand-carried multiple conductor wire rope
US2281036A (en) Rope structure
US3035403A (en) Stranded wire structures
US3092956A (en) 7-strand wire rope
US3141372A (en) Nonkinking ropes
KR200224819Y1 (en) Wire rope having an improved durability
US883759A (en) Wire rope.
US1779471A (en) Wire rope and cable
US3729921A (en) Non-rotating rope with spiral strands
US2230481A (en) Hoisting cable

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMSTED INDUSTRIES INC. A CORP OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNITED STATES STEEL CORPORATION A DE CORP.;REEL/FRAME:004322/0092

Effective date: 19840712