US3668778A - Methods for joining ends of wires and the like - Google Patents

Methods for joining ends of wires and the like Download PDF

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Publication number
US3668778A
US3668778A US32321*[A US3668778DA US3668778A US 3668778 A US3668778 A US 3668778A US 3668778D A US3668778D A US 3668778DA US 3668778 A US3668778 A US 3668778A
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US
United States
Prior art keywords
tube
explosive
connecting tube
placing
layer
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
US32321*[A
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English (en)
Inventor
Torleif Lindtveit
Leif Johnsen
Borge F Haegland
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.)
BORGE F HAEGLAND
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BORGE F HAEGLAND
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 BORGE F HAEGLAND filed Critical BORGE F HAEGLAND
Application granted granted Critical
Publication of US3668778A publication Critical patent/US3668778A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/042—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using explosives
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.
    • Y10T29/49195—Assembling elongated conductors, e.g., splicing, etc. with end-to-end orienting
    • 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
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming
    • 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
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping

Definitions

  • ABSTRACT A method for joining ends of wires and the like by means of an explosive charge.
  • a connecting tube with a bore adapted to receive the ends to be connected is provided with an external layer of explosive charge having a varying geometrical shape longitudinally of said tube so as to produce after detonation alternating parts of different compression so that the contact surface between the tube and the ends therein after compression forms a more or less corrugated profile in the longitudinal direction in order to form an axially locked connection of the assembled components.
  • the present invention relates to a method for joining wires, rods, high tension lines and the like and for attaching end fastener thereto.
  • this is obtained by an explosive charge surrounding the connecting member, in the longitudinal direction thereof.
  • the member is formed with a varying geometrical shape so that after detonation of the explosive charge, the member has local areas which are compressed more than others.
  • the varying geometrical shape of the layer of explosive charge may-consist of a varying thickness in the longitudinal direction of the connecting member or the layer of explosive on the inner surface thereof may be provided with cavities, referably in the form of spaced circular grooves which roduce a hollow charge effect.
  • This causes the connecting member as well as the ends below said grooves to be shaped with locally restricted cross-section alternating with partshaving a smaller restriction so that the interior dimensions of the connecting member after compression correspond to the external dimensions of the connected ends.
  • necessary tensile strength is obtained due to the locking effect of said locally restricted cross-sections.
  • connecting members or tubes having relatively thick walls or consisting of soft or easily meltable metal such as aluminum use is made of a damping material between the connecting tube and the explosive charge so that the surface of the connecting tube may resist the effect of pressure and heat from the amount of explosive which is necessary.
  • the components for carrying the method into effect may be prefabricated according to a selected modulus, or be produced in sizes adapted to normal types of wires or conductors and joints.
  • the necessary components for a joint may be delivered in the form of a ready packaged unit, such as a solid wooden box distinctly marked, which is simple and easy to transport to any place of use.
  • This unit would include connecting tubes having a ready dimensioned external explosive charge and appurtenant intermediate components, damping material etc.
  • FIG. 1 is a side view partially cut away with parts in section illustrating the core ends of a high tension line in a tube shaped connecting member.
  • FIG. 2 is a longitudinal sectional view of a main tube to be compressed over the core joint shown in FIG. 2.
  • FIG. 3 is a side view of the completed joint.
  • FIG. 4 is a longitudinal sectional view of filling members
  • FIG. 5 is a similar view of another filling members.
  • Tube 6 is made of steel and preferably galvanized, cleaned for any possible irregularities and thereafter coated with an external layer 7 of special plastic high explosive, which may be protected by an outer cardboard cylinder (not shown). Said explosive has a high specific weight and a relatively low detonation rate. Explosive charge layer 7 surrounding the core tube 6, has in its longitudinal direction, a varying geometrical shape in order to vary the compression effect in the longitudinal direction of the core tube. Said varying geometrical shape may have a varying thickness of the layer 7 or the layer on the inner surface thereof may be provided with cavities, preferably in the form of circular grooves 8 spaced at either even or uneven intervals.
  • an axially split, tapered steel case, or shock conductor 10 as shown in phantom in FIG. 1, is clamped on each of said ends by means of screws or the like and then the explosive charge 7 is detonated by means of a detonator 9 which may be of any conventional type.
  • Core tube 6 during the detonation is exposed to an external pressure impulse, the culminating pressure progress and duration of which are dependent of upon the type, amount and geometry of said charge. Due to the grooves 8 of the layer 7 the hollow charge effect thereof produces parts having locally restricted or narrowed cross-sections in the core tube 6 as well as in the core 4 therein, alternating with parts having smaller restriction and so that the contact surface between the tube and the core ends therein after compression forms a more or less corrugated profile in the longitudinal direction.
  • FIG. 2 The arrangement of joining the whole cross-section of the line is illustrated in FIG. 2.
  • the cases .or shock conductors 10 are removed. If the core tube 6 is of smaller diameter than that of the conducting strands 5 use is made of filling members. Firstly the exposed core portions between the ends of the tube 6 and adjacent ends of the conductors are each covered with a pair of tube halves l2, 12, FIG. 4, having an outer diameter substantially corresponding to that of the core tube 6. Further the core tube 6 is provided with an enclosure comprising two half tubes l3, 13, FIG. 5, having an outer diameter substantially corresponding to the outer diameter of the braided conductors 5, and a length to cover both the core tube and the halves l2, 12 at the ends thereof.
  • Said tube halves l3, 13 are made of aluminum, while the tube halves 12, 12 aremade of zinc and serve in addition as anodes which protect both the steel and aluminum against corrosion.
  • the final compact joint allows very little internal circulation of air and moisture and in addition the enclosed zinc anodes give the minimum deadvolume a maximum of corrosive protection.
  • the main tube 14 consists of aluminum and has a relatively great wall thickness, and in order to protect the surface of said tube against melting and crater forming it is preferred in this case to use between the main tube 14 and the explosive charge an intermediate layer of elastomeric damping material, such as a hose 15 of plastic, rubber or similar plastic deformable material, threaded on said tube 14.
  • the explosive charge consists of detonating fuse l6 wound spirally around said hose 15.
  • the fuse 16 may be wound possibly with varying pitch in one layer or partially in two layers.
  • said intermediate layer (hose) 15 may be given a varying thickness in order to regulate the effect of the detonation impulse.
  • the main tube 14 is compressed in a predetermined manner about the ends of the conductors 5 and the core tube 6, possibly via filling members l2, l3 and thereby the joint is finished, as shown in FIG. 3.
  • a method of joining the ends of two cables each having a central core and conductor strands surrounding the core comprising:
  • the method of claim 1 including the steps of placing a protective case over the conductor strand ends prior to detonation of the connecting tube explosive and removing said casing prior to placing said second tube over the strands.
  • the method of claim 1 including the step of placing a filling member over the connecting tube after detonation of its explosive layer to fill the gap between the outside diameter of the strands and the outside diameter of the connecting tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Cable Accessories (AREA)
US32321*[A 1968-04-05 1969-04-03 Methods for joining ends of wires and the like Expired - Lifetime US3668778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO1325/68A NO120279B (enrdf_load_stackoverflow) 1968-04-05 1968-04-05

Publications (1)

Publication Number Publication Date
US3668778A true US3668778A (en) 1972-06-13

Family

ID=19878128

Family Applications (1)

Application Number Title Priority Date Filing Date
US32321*[A Expired - Lifetime US3668778A (en) 1968-04-05 1969-04-03 Methods for joining ends of wires and the like

Country Status (7)

Country Link
US (1) US3668778A (enrdf_load_stackoverflow)
JP (1) JPS497716B1 (enrdf_load_stackoverflow)
BE (1) BE731039A (enrdf_load_stackoverflow)
DE (1) DE1917348C3 (enrdf_load_stackoverflow)
FR (1) FR2007400A1 (enrdf_load_stackoverflow)
NO (1) NO120279B (enrdf_load_stackoverflow)
SE (1) SE348817B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711027A (en) * 1983-12-15 1987-12-08 Cordis Corporation Implantable lead construction
US20040194995A1 (en) * 2003-04-04 2004-10-07 Ciro Pasini Method and apparatus for joining ends of wires and the like
CN102157802A (zh) * 2011-03-12 2011-08-17 山东电力集团公司临沂供电公司 接线端子处理爆压器
US20110297441A1 (en) * 2008-04-16 2011-12-08 Afl Telecommunications Llc. Implosive joint and dead-end apparatus and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001488A1 (en) * 1980-11-04 1982-05-13 Sven R Gebelius A method to join two elements,and a joint according to the method
US5064111A (en) * 1990-10-02 1991-11-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Permanent wire splicing by an explosive joining process
DE19839298A1 (de) * 1998-08-28 2000-03-09 Gestra Gmbh Bimetallgesteuerter Kondensatableiter mit der Sattdampfkurve angepaßter Schliesskraftlinie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417455A (en) * 1961-01-18 1968-12-24 Navy Usa Explosive welding
US3520986A (en) * 1968-12-24 1970-07-21 Ideal Ind No-strip explosion connector
US3542276A (en) * 1967-11-13 1970-11-24 Ideal Ind Open type explosion connector and method
US3543387A (en) * 1967-12-01 1970-12-01 Euratom Method for the explosive welding of a metal plug to a metal tube or of nested portions of metal tubes to each other

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417455A (en) * 1961-01-18 1968-12-24 Navy Usa Explosive welding
US3542276A (en) * 1967-11-13 1970-11-24 Ideal Ind Open type explosion connector and method
US3543387A (en) * 1967-12-01 1970-12-01 Euratom Method for the explosive welding of a metal plug to a metal tube or of nested portions of metal tubes to each other
US3520986A (en) * 1968-12-24 1970-07-21 Ideal Ind No-strip explosion connector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711027A (en) * 1983-12-15 1987-12-08 Cordis Corporation Implantable lead construction
US20040194995A1 (en) * 2003-04-04 2004-10-07 Ciro Pasini Method and apparatus for joining ends of wires and the like
US7219425B2 (en) 2003-04-04 2007-05-22 Ciro Pasini Arrangement in explosion joining of ends of wires and the like
US20070169340A1 (en) * 2003-04-04 2007-07-26 Ciro Pasini Method and apparatus for joining ends of wires and the like
US20070256854A1 (en) * 2003-04-04 2007-11-08 Ciro Pasini Method and apparatus for joining ends of wires and the like
US7414199B2 (en) 2003-04-04 2008-08-19 Ciro Pasini Joined cable assembly
US7511223B2 (en) 2003-04-04 2009-03-31 Ciro Pasini Method and apparatus for joining ends of wires and the like
US7947905B2 (en) 2003-04-04 2011-05-24 Hubbell Incorporated Method and apparatus for joining ends of wires and the like
US20110297441A1 (en) * 2008-04-16 2011-12-08 Afl Telecommunications Llc. Implosive joint and dead-end apparatus and method
US8653366B2 (en) * 2008-04-16 2014-02-18 Afl Telecommunications Llc Implosive joint and dead-end apparatus and method
CN102157802A (zh) * 2011-03-12 2011-08-17 山东电力集团公司临沂供电公司 接线端子处理爆压器

Also Published As

Publication number Publication date
DE1917348A1 (de) 1969-11-27
JPS497716B1 (enrdf_load_stackoverflow) 1974-02-21
NO120279B (enrdf_load_stackoverflow) 1970-09-28
DE1917348C3 (de) 1978-07-06
SE348817B (enrdf_load_stackoverflow) 1972-09-11
BE731039A (enrdf_load_stackoverflow) 1969-09-15
FR2007400A1 (enrdf_load_stackoverflow) 1970-01-09
DE1917348B2 (de) 1977-11-03

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