US3908715A - Method of joining wires, strands and cords - Google Patents

Method of joining wires, strands and cords Download PDF

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Publication number
US3908715A
US3908715A US420618A US42061873A US3908715A US 3908715 A US3908715 A US 3908715A US 420618 A US420618 A US 420618A US 42061873 A US42061873 A US 42061873A US 3908715 A US3908715 A US 3908715A
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US
United States
Prior art keywords
wires
wire
strand
cords
strands
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
US420618A
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English (en)
Inventor
Roger Spiessens
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.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
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 Bekaert NV SA filed Critical Bekaert NV SA
Application granted granted Critical
Publication of US3908715A publication Critical patent/US3908715A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
    • B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
    • B21F15/04—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire without additional connecting elements or material, e.g. by twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
    • 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
    • D07B7/16—Auxiliary apparatus
    • D07B7/167—Auxiliary apparatus for joining rope components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
    • F16G11/044—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord
    • F16G11/046—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord by bending the cable around a surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/08—Fastenings for securing ends of driving-cables to one another, the fastenings having approximately the same diameter as the cables

Definitions

  • This invention relates to a method of joining wires, strands and cords and, more particularly, is concerned with a method of joining wires having a diameter in the range of from 0.10 to 0.30 mm, such wires being commonly used to form strands for use in metal cords, and a method of joining cords and strands comprising wires of said diameter.
  • Metal cords are used in the manufacture of reinforced articles of natural or synthetic rubber or plastics material, for example pneumatic tyres and hoses. Particulaly in the case of pneumatic tyres the cords should be extremely flexible and should be capable of undergoing repeated deformation and successive flexing without undergoing permanent deformation. These properties are obtained by constructing the cord of several strands, each strand comprising typically 2 to 7 wires each having a diameter in the range of from 0.10
  • wire is used herein to describe wire having a diameter in the range of from 0.10 to 0.30 mm.
  • each wire in the cord which wire is typically made of steel, can be coated with, for exam ple brass.
  • the wires are generally made by a drawing operation and are stored on bobbins. Because the wires are so thin they periodically break during drawing. Up to now there has been no practical method known for joining together lengths of wire to obtain a satisfactory joint. Because of this it is necessary for strands to be made from unbroken lengths of wire. To minimise wastage, when a wire breaks the unbroken wire on the bobbin is placed in a group of bobbins having approximately the same length of unbroken wire thereon. Typically one group would contain bobbins having 1,000 to 2,000 meters of unbroken wire, another group would contain bobbins having 2,000 to 3000 meters of unbroken wire, etc. Subsequently bobbins from the same group are mounted on a twisting machine and a strand is twisted. The length of the strand is determined by the shortest wire and hence wastage occurs.
  • One aspect of the present invention provides a method of joining two wires each having a diameter in the range 0.10 to 0.30 mm, which method comprises the steps of arranging the wires along one another, holding said wires fast with respect to one another at two spaced locations, and twisting said wires between said locations.
  • this method is particularly suitable for joining wires having a diameter in the range of from 0.15 to 0.25 mm.
  • the wires are preferably twisted between 3 and 4 complete turns and the holding locations are preferably spaced in the range 15 to 24 mm apart, advantageously 19 mm apart.
  • Another aspect of the present invention provides a method of joining two cords or strands each having wires with a diameter in the range 0.10 to 0.30 mm, which method comprises the steps of arranging the cords or strands alongside one another, holding said cords or strands fast with respect to one another at two spaced locations, and twisting said cords or strands between said locations.
  • the cords or strands are preferably twisted between 3 and 4 complete turns and the holding locations are preferably spaced not less than 19 mm apart, advantageously 30 mm apart.
  • the present invention also provides wires, cords and strands when joined by a method in accordance with the invention.
  • the ultimate tensile strength of a wire with a joint in accordance with the invention is only 22 to 32% lowerthan that of the unbroken wire. Furthermore, the method of the invention does not cause an undesirable degree of removal of brass from the surface of a wire compared with the welding operation hereinbefore described.
  • FIG. 1 shows, on an enlarged scale, two wires about to be joined together
  • FIG. 2 shows the wires joined together
  • FIG. 3 shows a perspective view of a cord comprising several strands one of which strands includes a wire comprising two lengths joined together;
  • FIG. 4 shows a tool for use in joining the wires.
  • two wires 1 and 2 are laid side-by-side with their free ends 3 and 4 facing away from one another.
  • the wires 1 and 2 respectively are held fast at two holding locations a distance L apart and the two wires are twisted (FIG. 2) at 5 which is midway between'the two locations.
  • the free ends 3 and 4 of wires 1 and 2 are then wrested off close to the joint as shown in FIG. 2. It is preferable to wrest of the free ends of the wires, as at 6, in a direction whereby the twisting connection is strengthened.
  • FIGQ4 there is shown a tool 10 which is suitable for twisting the wires 1 and 2.
  • the tool 10 comprises a circular disc having a wedge-shaped opening 11 therein.
  • the wires 1 and 2 are placed in the opening 11 and the disc is rotated to twist the wires 1 and 2.
  • Another suitable tool is disclosed in US. Pat. No. 3,650,302.
  • the number of turns of the wires 1 and 2 necessary to effect a satisfactory joint depend inter alia on the diameter of the wire to be connected and the desired tensioning of the wires. If the disc is rotated too many times the wires 1 and 2 will break whereas insufficient rotation of the wires will allow the wires 1 and 2 to slip relative to one another. V
  • the column headed OT contains the ultimate ten- I IO 5 g n g sile stress oflengths of oin free wire whereas those col- 7 x 3 x 0,15 3 99 94 5 umns headed 2T, 3T and 4T respectively designate i fi g fg 4 I00 96 7 3 3 lengths of wires joined by two, three and four twists re- (IX3) (5X7) 3 184 8 spectively.
  • Each of the columns headed 2T, ST and 4T is subdivided into 3 columns headed by the length L of g z g gi g 52: the joint.
  • the superscripts b and s respectively denote 7 x 7 x 0,17 4 262 257 2 failure of the joint by rupture of the wire at one end of 7 3 0,20 3 167 156 5.6 1 7 X 3 X 020 4 167 152 10 the oint, and slipping of the wires of the oint relative to one another.
  • wires having 3 turns and ajoint length of 19 mm with a diameter less than 0.20 mm proved satisfactory for forming strands
  • wires so joined with a diameter of greater than 0.20 tended to hitch during the stranding operation. This problem was reduced by increasing the length of the joint to 24 mm.
  • each wire is not individually connected to an adjacent wire but that one strand or cord end is connected directly to another strand or cord end respectively.
  • the length L of the joint should not be less than 19 mm and that the strands should consist -of a maximum of 5 wires.
  • a method of forming a wire strand comprising:
  • a method of forming a cable comprising:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ropes Or Cables (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
US420618A 1973-01-18 1973-11-30 Method of joining wires, strands and cords Expired - Lifetime US3908715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB264073A GB1405545A (en) 1973-01-18 1973-01-18 Method of joining wires, strands and cords

Publications (1)

Publication Number Publication Date
US3908715A true US3908715A (en) 1975-09-30

Family

ID=9743137

Family Applications (1)

Application Number Title Priority Date Filing Date
US420618A Expired - Lifetime US3908715A (en) 1973-01-18 1973-11-30 Method of joining wires, strands and cords

Country Status (12)

Country Link
US (1) US3908715A (xx)
JP (1) JPS49103189A (xx)
BE (1) BE808216A (xx)
BR (1) BR7400297D0 (xx)
DE (1) DE2364966A1 (xx)
ES (2) ES422346A1 (xx)
FR (1) FR2214538B1 (xx)
GB (1) GB1405545A (xx)
IE (1) IE38548B1 (xx)
IT (1) IT1002691B (xx)
LU (1) LU69175A1 (xx)
NL (1) NL7400261A (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002032600A1 (en) * 2000-10-21 2002-04-25 Jonathan Armitage Wire joining tool
WO2005068696A1 (en) * 2003-12-22 2005-07-28 Otis Elevator Company Elevator tension member assembly techniques
US20050172605A1 (en) * 2002-05-23 2005-08-11 N.V. Bekaert S.A. Metal cord
US20050257874A1 (en) * 2002-07-17 2005-11-24 N.V. Bekaert S.A. Metal strand comprising interrupted filament
US20100170214A1 (en) * 2005-08-19 2010-07-08 Nv Bekaert Sa CONNECTION of STEEL CORD ENDS
US20140298770A1 (en) * 2011-11-01 2014-10-09 Bridgestone Corporation Metal filament body connecting method and connecting device
US9597724B2 (en) 2010-09-02 2017-03-21 Jon R. Kodi Wire twisting tools and methods
WO2019137856A1 (en) 2018-01-12 2019-07-18 Nv Bekaert Sa Wire welder and method for wire welding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1384809A1 (en) * 2002-07-22 2004-01-28 N.V. Bekaert S.A. Fixing of filaments in strand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1502056A (en) * 1923-05-05 1924-07-22 William H Pearson Machine for splicing cords
US1978164A (en) * 1933-05-10 1934-10-23 Bell Telephone Labor Inc Wire splicing machine
US2454417A (en) * 1947-06-23 1948-11-23 Union Wire Rope Corp Sling
US2646298A (en) * 1952-07-15 1953-07-21 Joseph C Leary Method of knot tying
US2796662A (en) * 1954-08-13 1957-06-25 John A Saum Wire splicer clamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516188A (en) * 1923-10-20 1924-11-18 Wickwire Spencer Steel Corp Machine for uniting the ends of wires
US1707981A (en) * 1927-12-23 1929-04-09 Nat Standard Co Wire-tying tool
US2831356A (en) * 1956-02-20 1958-04-22 Kopparfors Ab Movement transmitting mechanism with automatic stopping means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1502056A (en) * 1923-05-05 1924-07-22 William H Pearson Machine for splicing cords
US1978164A (en) * 1933-05-10 1934-10-23 Bell Telephone Labor Inc Wire splicing machine
US2454417A (en) * 1947-06-23 1948-11-23 Union Wire Rope Corp Sling
US2646298A (en) * 1952-07-15 1953-07-21 Joseph C Leary Method of knot tying
US2796662A (en) * 1954-08-13 1957-06-25 John A Saum Wire splicer clamp

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002032600A1 (en) * 2000-10-21 2002-04-25 Jonathan Armitage Wire joining tool
US7426822B2 (en) * 2002-05-23 2008-09-23 Nv Bekaert Sa Metal cord
US20050172605A1 (en) * 2002-05-23 2005-08-11 N.V. Bekaert S.A. Metal cord
US7426821B2 (en) * 2002-07-17 2008-09-23 Nv Bekaert Sa Metal strand comprising interrupted filament
US20050257874A1 (en) * 2002-07-17 2005-11-24 N.V. Bekaert S.A. Metal strand comprising interrupted filament
US20070277496A1 (en) * 2003-12-22 2007-12-06 O'donnell Hugh J Elevator Tension Member Assembly Techniques
WO2005068696A1 (en) * 2003-12-22 2005-07-28 Otis Elevator Company Elevator tension member assembly techniques
CN1886538B (zh) * 2003-12-22 2012-05-23 奥蒂斯电梯公司 升降机受拉件的组装技术
US20100170214A1 (en) * 2005-08-19 2010-07-08 Nv Bekaert Sa CONNECTION of STEEL CORD ENDS
US7856803B2 (en) * 2005-08-19 2010-12-28 Nv Bekaert Sa Connection of steel cord ends
US9597724B2 (en) 2010-09-02 2017-03-21 Jon R. Kodi Wire twisting tools and methods
US20140298770A1 (en) * 2011-11-01 2014-10-09 Bridgestone Corporation Metal filament body connecting method and connecting device
US9194079B2 (en) * 2011-11-01 2015-11-24 Bridgestone Corporation Metal filament body connecting method and connecting device
WO2019137856A1 (en) 2018-01-12 2019-07-18 Nv Bekaert Sa Wire welder and method for wire welding
US11806815B2 (en) 2018-01-12 2023-11-07 Nv Bekaert Sa Wire welder and method for wire welding

Also Published As

Publication number Publication date
IE38548B1 (en) 1978-04-12
IE38548L (en) 1974-07-18
LU69175A1 (xx) 1975-12-09
DE2364966A1 (de) 1974-07-25
FR2214538B1 (xx) 1979-07-13
GB1405545A (en) 1975-09-10
BR7400297D0 (pt) 1974-08-22
IT1002691B (it) 1976-05-20
JPS49103189A (xx) 1974-09-30
ES218808U (es) 1976-10-16
FR2214538A1 (xx) 1974-08-19
BE808216A (nl) 1974-03-29
NL7400261A (xx) 1974-07-22
ES218808Y (es) 1977-03-01
ES422346A1 (es) 1976-07-01

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