US3358435A - Cord composed of filaments or strands of different diameters - Google Patents

Cord composed of filaments or strands of different diameters Download PDF

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Publication number
US3358435A
US3358435A US448662A US44866265A US3358435A US 3358435 A US3358435 A US 3358435A US 448662 A US448662 A US 448662A US 44866265 A US44866265 A US 44866265A US 3358435 A US3358435 A US 3358435A
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US
United States
Prior art keywords
elements
cord
diameter
core
wires
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
US448662A
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English (en)
Inventor
Peene Guido
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.)
Trefileries Leon Bekaert SPRL
Original Assignee
Trefileries Leon Bekaert SPRL
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Publication date
Application filed by Trefileries Leon Bekaert SPRL filed Critical Trefileries Leon Bekaert SPRL
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Publication of US3358435A publication Critical patent/US3358435A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D07B1/0626—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration the reinforcing cords consisting of three core wires or filaments and at least one layer of outer wires or filaments, i.e. a 3+N configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0613—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the rope configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/2006—Wires or filaments characterised by a value or range of the dimension given
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2059—Cores characterised by their structure comprising wires
    • D07B2201/2061—Cores characterised by their structure comprising wires resulting in a twisted structure
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/902—Reinforcing or tire cords
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/906—Line appliances

Definitions

  • This invention relates to cables or cords to be used for reinforcing elastic or resilient articles made of rubber, plastic or the like materials, and particularly to cords such as are used for reinforcing pneumatic tires, conveyor belts, power transmission belts, hoses for high pressure and the like articles.
  • cables or cords of such kind have various disadvantages, particularly of considerable reduction of the numerical value of their fatigue resistance against flexing, compared with cables or cords ofthe conventional construction composed of wire filaments of a finer gauge, for example, as described in U.S. Letters Patent No. 3,032,963.
  • the highest possible amount of tensile strength per unit of section area is required, particularly for reinforcing conveyor belts, power transmission belts or the like.
  • certain limitations in dimensions for the diameter of the cord exist; furthermore, the proportions of rubber to steel determine the size of the reinforcing cords.
  • a greater tensile strength per unit of cord surface can be obtained by using heavier wire filaments in the construction of the cord; however, this is achieved at the expense of the numerical value of the fatigue resistance.
  • Another object of the present invention is to provide cords having an improved and increased tensile strength together with an increased numerical value of fatigue resistance.
  • Yet another object ofl the present invention ⁇ is to provide cords having an improved inner wear resistance.
  • a further object of the present invention is to provide a cord having an improved surface contact between the outer elements composing the jacket and the core strands, and minimum of wear between the jacket elements and the core due to their relative shifting when in use for reinforcing purposes, thus providing a cord with a high value of fatigue resistance.
  • Another object of the present invention is to improve the quality of cable or cord resulting from novel selection, arrangement and twisting of filament wires and wire strands composing the same.
  • a still further object of the present invention is to provide cords having an improved economic coefficient, that is, the quotient of the price per meter of cord per kilogram of tensile strength.
  • FIG. 1 shows in cross-section a cord according to the invention, drawn in an enlarged scale
  • FIG. 2 illustrates in cross-section a conventional cord having a jacket composed of six outer wires surrounding a core composed of three wires.
  • FIG. l a cable or cord having the general numeral 10 which is composed of a stranded core having the general numeral 20 and an outer jacket theresurrounding, comprising three filaments or wires 11 of one diameter, and three filaments or wires ,12 of another diameter.
  • the core 10 consists of three filaments or wires 21 which are stranded together in conventional manner. It is understood that one or more of the single-filament wires 11 and 12 of the outer jacket may be replaced with wire strands.
  • wires 11 and 12 are shown as single wire filaments for convenience.
  • elements 11 may consist of a plurality of smaller wires stranded together and elements 12 may consist of monolilaments, or vice versa, it being understood, however, that any combination of monoiilaments and stranded elements may be used in the construction of the outer jacket.
  • Cord 10 in its preferred form, has the following speciiic properties and unobvious advantages and features resulting from the novel selection and arrangement of its parts and elements and its construction therewith.
  • Gore 20 consists of three wires 12 of equal diameter d', which are stranded together with a pitch L and with a lay direction K.
  • the theoretical diameter of core 20 is, as is known in the art, equal to 2.15d'.
  • Three monofiiament wires 11, having a diameter D', equal to approximately 1.85d, are stranded together with core 20, h-aving the same pitch and the same lay direction as the wires of core 20, in such manner that they adjust with said core tangentially touching simultaneously the periphery of two of the wires of the core.
  • the diameter D of the wire is selected according to the nature of the construction and with respect to the elliptic shape of the same, caused by the pitch. This shown in FIG.
  • Typical examples of such cords are: for a heavier type of cord: 'c for the core: three wires each having a diameter of 0.23 mm. y for the jacket: three wires each having a diameter of 5 0.43 mm. and three wires each having a diameter of 0.345 mm. for a lighter type of cord:
  • the core three wires each having a diameter of 0.17 mm.
  • the jacket three wires each having a diameter of 0.32 mm, and three wires each having a diameter of 0.26 mm.
  • Each monofilament wire 12 may be substituted by a plurality of smaller wires stranded together, the outer diameter of which plurality of twisted wires is D.
  • each monofilament wire 11 maybe substituted by a plurality of smaller wires stranded together, the cuter ldiameter of which plurality of twisted wires is D'2.
  • a substantial increase of the numerical value of the fatigue resistance results from the linear contact between the elements of the outer jacket and the filaments of the stranded core because of both the equal pitch and lay direction of these elements and filaments. Obviously the contact area between the elements and filaments is much larger and the inevitable wear due to the movement of these parts relative to one another is less. In the same sense, the closer fitting of wires of jacket and strand of core reduces the friction between these parts and slows down or reduces Vthe wear.
  • a numerical value of fatigue resistance which is higher than in case of -a cross-lay; however, a cable or cord made according to the present invention, having the same diameter as a conventionally-constructed cable or cord, such as is shown in FIG. 2, a numerical value of fatigue is obtained which is up to 40% higher.
  • outside cable diameter In a conventional cord or cable: outside cable diameter:
  • Cord or cable according to the present invention Conventional cord or cable total surface
  • the degree of filling or total -used surface of the cord or cable, according to the present invention is 8.35% higher than that yof a conventional cord or cable having the same outside diameter and having the same number of stranded wires. Since the sum total of the wire sections in the cord or cable of the present invention is so much higher, it is obvious that the tensile strength of the cord or cable also is increased by this amount, all specific values such as tensile strength of the material of the wires and loss of cabling being equal. i
  • a further important result is obtained by the facility of increasing the diameter of the filaments or monoilarnents in the construction of the cable or cord according to this invention by 4-5%, in that the price of the cord or cable decreases since the cost of manufacturing the strands and the cabling remain the same.
  • the conventional index figure of the quality of a cable called the Economic Coefficient, is the relation between the cost or price per meter of cable and the kilograms of tensile strength. It is clearly evident that the Economic Coefficient of the cables or cords made according to the present invention is significantly improved.
  • cabled cord can be further combined with other elements, for example, by spirally winding additional wires, strands or like elements around the outer jacket of the cord or cable, or by cabling together several cords made according to the present invention for obtaining heavier cables, or the like combinations.
  • the monofilaments of which the strands of the core and of which the outer'jacket consists can be plated with non-ferrous metals such as copper, nickel, beryllium, titanium, brass, tin, zinc or the like non-ferrous metals, or may be coated with anti-corrosive coatings of organic and inorganic character, such as, for example, paint, latex, polystyrene, polytetrailuoroethylene, polyvinyl, nylon, rayon, ceramics, etc., respectively, as circumstances may require it.
  • cord or cable according to the present invention embodies all practical combinations of metallic and non-metalic coatings, as well as all practical elements disposed over the jacket of the cord or cable.
  • the elements of the outer jacket may be composed of monofilainents or strands or a combination of both, for example, alternately strands and monolaments and respective elements may have different characters, and may have different lay directions or pitches.
  • filaments or monolaments or strands comprising the outer jacket and core may be made of plastic or other suitable nonmetallic material.
  • Cord for reinforcing articles made of rubber, plastic or the like materials comprising a center core composed of three monofilaments having the same diameters, said mono'ilaments twisted to a strand, and an outer jacket surrounding said cord, said jacket being composed of six elements, first three of said elements having the equal diameters fitting respectively tangentially in contacting engagement with two adjacent monotlaments of said core, said first three elements having a diameter of substantially 1.85 times the diameter of one of said monofilaments of said core, and the remaining three of said elements having equal diameters but differing in diameter size from the first three elements, said three remaining elements having a diameter of substantially 1.5 times the diameter of one of said monoiilaments of said core and fitting respectively in the spaces between said first three elements, said six elements being twisted around said core.
  • Cord for reinforcing articles made of rubber, plastic 0r the like materials comprising a center core composed 0f three wires having the same diameters, said wires twisted to a strand with both a predetermined pitch and lay, and a jacket surrounding said core, said jacket being composed of six elements, the rst three of said elements having equal diameters iitting respectively tangentially in contacting engagement with two adjacent wires of said core, said rst three elements having a diameter of substantially 1.85 times the diameter of one of said wires of said core, and the remaining three of said elements having equal diameters but differing in diameter size from the first three elements, said three remaining elements having a diameter of substantially 1.5 times the diameter of one of said Wires of said core and fitting respectively in the spaces between said first three elements, said six elements vbeing twisted around said core with both the same predetermined pitch and lay as said core.
  • said six elements of said jacket consisting of strands composed of a plurality of monofilament wires.

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  • Ropes Or Cables (AREA)
US448662A 1964-11-12 1965-04-16 Cord composed of filaments or strands of different diameters Expired - Lifetime US3358435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE655593A BE655593A (ja) 1964-11-12 1964-11-12

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US3358435A true US3358435A (en) 1967-12-19

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BE (1) BE655593A (ja)
GB (1) GB1038938A (ja)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667206A (en) * 1970-02-16 1972-06-06 American Chain & Cable Co Interlocked multi-wire member
US3834149A (en) * 1971-11-30 1974-09-10 Dawson & Usher Improvements in wire ropes, strands and wire ropes produced therefrom
US3972175A (en) * 1973-10-09 1976-08-03 Bethlehem Steel Corporation Method of providing wire strand from a strand production facility
US3996733A (en) * 1976-01-27 1976-12-14 Uniroyal Inc. Reinforcing cord construction
FR2468684A1 (fr) * 1978-12-13 1981-05-08 Saar Gmbh Drahtseilwerk Cable en fibres synthetiques
US4332131A (en) * 1978-08-22 1982-06-01 Rhone Poulenc Textile Apparatus and process of manufacturing a metal cord
JPS59124404A (ja) * 1982-12-29 1984-07-18 Bridgestone Corp 空気入りラジアルタイヤ
US4516395A (en) * 1983-08-23 1985-05-14 The Goodyear Tire & Rubber Company Metallic cable for reinforcing elastomeric articles
EP0162800A2 (en) * 1984-05-21 1985-11-27 The Goodyear Tire & Rubber Company Single strand metal cord and method of making
EP0194011A2 (en) * 1985-02-26 1986-09-10 Bridgestone Corporation Steel cords for the reinforcement of rubber articles
EP0290082A1 (en) * 1987-05-04 1988-11-09 N.V. Bekaert S.A. Compact steel cord structure
US5609014A (en) * 1992-04-20 1997-03-11 Tokyo Rope Manufacturing Co., Ltd. Rubber reinforcing steel cord
US20030139750A1 (en) * 2001-04-12 2003-07-24 Olympus Optical Co., Ltd. Treatment device for endoscope
JP2012183125A (ja) * 2011-03-03 2012-09-27 Asahi Intecc Co Ltd ロープ、及び該ロープを用いた回収機構用螺旋状ロープ
WO2019002163A1 (en) 2017-06-27 2019-01-03 Bekaert Advanced Cords Aalter Nv BELT REINFORCED BY STEEL BRINS
WO2019002162A1 (en) 2017-06-27 2019-01-03 Bekaert Advanced Cords Aalter Nv REINFORCING STRAND FOR REINFORCING A POLYMER ARTICLE
WO2019081411A1 (en) 2017-10-27 2019-05-02 Bekaert Advanced Cords Aalter Nv STEEL CABLE FOR ELASTOMERIC REINFORCEMENT
WO2020083893A1 (en) 2018-10-23 2020-04-30 Bekaert Advanced Cords Aalter Nv Steel wire rope, coated steel wire rope and belt comprising steel wire rope

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803316B2 (de) * 1968-10-16 1972-02-17 Zweilagige litze oder zweilagiges seil
GB1582647A (en) * 1977-07-07 1981-01-14 Bekaert Sa Nv Metal cord
AT395731B (de) * 1983-08-24 1993-02-25 Stahlcord Betriebsgesellschaft Metallkord zur verstaerkung von elastomerkoerpern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348234A (en) * 1940-06-19 1944-05-09 Jr Richard F Warren Flexible composite rope
US2863279A (en) * 1954-02-10 1958-12-09 Dietz Gerhard Fritz Wire rope

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348234A (en) * 1940-06-19 1944-05-09 Jr Richard F Warren Flexible composite rope
US2863279A (en) * 1954-02-10 1958-12-09 Dietz Gerhard Fritz Wire rope

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667206A (en) * 1970-02-16 1972-06-06 American Chain & Cable Co Interlocked multi-wire member
US3834149A (en) * 1971-11-30 1974-09-10 Dawson & Usher Improvements in wire ropes, strands and wire ropes produced therefrom
US3972175A (en) * 1973-10-09 1976-08-03 Bethlehem Steel Corporation Method of providing wire strand from a strand production facility
US3996733A (en) * 1976-01-27 1976-12-14 Uniroyal Inc. Reinforcing cord construction
US4332131A (en) * 1978-08-22 1982-06-01 Rhone Poulenc Textile Apparatus and process of manufacturing a metal cord
FR2468684A1 (fr) * 1978-12-13 1981-05-08 Saar Gmbh Drahtseilwerk Cable en fibres synthetiques
JPS59124404A (ja) * 1982-12-29 1984-07-18 Bridgestone Corp 空気入りラジアルタイヤ
US4572264A (en) * 1982-12-29 1986-02-25 Bridgestone Tire Co., Ltd. Pneumatic radial tires
JPH0474475B2 (ja) * 1982-12-29 1992-11-26
US4516395A (en) * 1983-08-23 1985-05-14 The Goodyear Tire & Rubber Company Metallic cable for reinforcing elastomeric articles
EP0162800A2 (en) * 1984-05-21 1985-11-27 The Goodyear Tire & Rubber Company Single strand metal cord and method of making
EP0162800A3 (en) * 1984-05-21 1987-08-05 The Goodyear Tire & Rubber Company Single strand metal cord and method of making
EP0194011A2 (en) * 1985-02-26 1986-09-10 Bridgestone Corporation Steel cords for the reinforcement of rubber articles
EP0194011A3 (en) * 1985-02-26 1987-08-12 Bridgestone Corporation Steel cords for the reinforcement of rubber articles
EP0460705A1 (en) * 1985-02-26 1991-12-11 Bridgestone Corporation Steel cords for the reinforcement of rubber articles
US4829760A (en) * 1987-05-04 1989-05-16 N.B. Bekaert S.A. Compact steel cord structure
EP0290082A1 (en) * 1987-05-04 1988-11-09 N.V. Bekaert S.A. Compact steel cord structure
US5609014A (en) * 1992-04-20 1997-03-11 Tokyo Rope Manufacturing Co., Ltd. Rubber reinforcing steel cord
US20030139750A1 (en) * 2001-04-12 2003-07-24 Olympus Optical Co., Ltd. Treatment device for endoscope
US8157811B2 (en) * 2001-04-12 2012-04-17 Olympus Corporation Treatment device for endoscope
JP2012183125A (ja) * 2011-03-03 2012-09-27 Asahi Intecc Co Ltd ロープ、及び該ロープを用いた回収機構用螺旋状ロープ
WO2019002162A1 (en) 2017-06-27 2019-01-03 Bekaert Advanced Cords Aalter Nv REINFORCING STRAND FOR REINFORCING A POLYMER ARTICLE
WO2019002163A1 (en) 2017-06-27 2019-01-03 Bekaert Advanced Cords Aalter Nv BELT REINFORCED BY STEEL BRINS
US11186947B2 (en) 2017-06-27 2021-11-30 Bekaert Advanced Cords Aalter Nv Reinforcement strand for reinforcing a polymer article
US11685633B2 (en) 2017-06-27 2023-06-27 Bekaert Advanced Cords Aalter Nv Belt reinforced with steel strands
US11708665B2 (en) 2017-06-27 2023-07-25 Bekaert Advanced Cords Aalter Nv Reinforcement strand for reinforcing a polymer article
WO2019081411A1 (en) 2017-10-27 2019-05-02 Bekaert Advanced Cords Aalter Nv STEEL CABLE FOR ELASTOMERIC REINFORCEMENT
US11280047B2 (en) 2017-10-27 2022-03-22 Bekaert Advanced Cords Aalter Nv Steel cord for elastomer reinforcement
WO2020083893A1 (en) 2018-10-23 2020-04-30 Bekaert Advanced Cords Aalter Nv Steel wire rope, coated steel wire rope and belt comprising steel wire rope
US11993894B2 (en) 2018-10-23 2024-05-28 Bekaert Advanced Cords Aalter Nv Steel wire rope, coated steel wire rope and belt comprising steel wire rope

Also Published As

Publication number Publication date
GB1038938A (en) 1966-08-17
BE655593A (ja) 1965-03-01

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