US3591758A - Flame-cutting torch - Google Patents

Flame-cutting torch Download PDF

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Publication number
US3591758A
US3591758A US866311A US3591758DA US3591758A US 3591758 A US3591758 A US 3591758A US 866311 A US866311 A US 866311A US 3591758D A US3591758D A US 3591758DA US 3591758 A US3591758 A US 3591758A
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steel wires
oxygen
lance
flame
cutting
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US866311A
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Reginald Clucas
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E21B7/146—Thermal lances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0211—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in cutting
    • B23K35/0216—Rods, electrodes, wires
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • E21B7/15—Drilling by use of heat, e.g. flame drilling of electrically generated heat

Definitions

  • lances are made of a metallic sleeve containing a soft-iron multistrand wire core and are unwieldly.
  • the object therefore of the present invention is to provide an oxygen lance suitable for cutting into or through metals which may be of infinite length yet strong, convenient to use and unbreakable and suitable for air and underwater use.
  • a further object of the invention is to provide a torch in which multistrand steel wires form a hollow core within an outer sheath of plastics material through which oxygen may be caused to flow and to which electric current is applied when in use.
  • the steel of the wires is preferably high-tensile steel, as distinct from soft-iron in known lances which burn away quickly, and the sheath, which may be composed of a variety of plastics materials, serves to contain the oxygen gas within the length of the lances as well as provide electrical insulation.
  • the sheath of plastics material such as nylon
  • Such sheath which is conveniently the thicker the better not only confines the oxygen gas but prevents splaying out of the hightensile steel wires which tend to fuse together before disintegrating and may burn away more quickly than the sheath.
  • the electric current applied to the steel wires of the lance may be of the order of some 160 amps, that is to say quite low as compared with the known carbon lances which require something like 400 amps.
  • One end of the flexible lance is provided with an end fitting for connecting the oxygen gas supply and the electrical supply, when such fitting may comprise a copper or other conductive tube which may be forced into the hollow core and a ferrule or sleeve to overlie the ends of the steel wires with the plastics material extending over at least part of the length thereof.
  • the tube or the sleeve is formed as, or intimately connected to, a threaded member serving as a union member for cooperating with a complementary coupling member of an oxygen-supply hose.
  • the sleeve may also be provided with a terminal or the equivalent to which an electric supply cable may be connected, the current return being through earth.
  • the lance In the use of the lance, oxygen gas is supplied thereto and also electric current and then when the work end of the lance is made to contact a metal a spark occurs which ignites the gas and the torch continues to burn with consumption of the lance until the gas supplyis cut off.
  • the flexibility of the lance enables it to be made in appreciable length, so avoiding interruptions in the operation as with known limited-length lances, as well as making it convenient to use and suitable for operations not possible with a rigid lance, and especially so in submarine operations.
  • the flexible lance is composed of a multicore multistrand high-tensile steel cable, such as in commercially available and used for example as a crane cable, but without the center core so that it comprises in section (see FIGS. 2 and 3) a ring of wire strands l enclosing a hollow core 3 which serves as the oxygen gas flow path, and of an outer sheath 2 of plastics material which confines the gas supplied to the lance to flow within the hollow core 3 as well as provides electrical insulation.
  • FIG. 1 An end fitting of convenient design is provided, and as illustrated in FIG. 1 comprises a copper tube 4 which is forced into the hollow core and is fast with an outer metallic sleeve 5 which clamps onto the metal wires.
  • the sheath 2 extends at least partly along the length of the sleeve 5, which is also provided with a clamping tenninal 6, or the like, for the connecting-on of a current-conducting cable.
  • the tube 4 is at its outer end formed as, or made fast to, a threaded union member 7 capable of engaging a complementary union member of an oxygen-supply hose.
  • a flexible cover sleeve may also be positioned over the exposed end of the fitting to enclose the electric cable end and gas-supply hose, particularly for underwater use.
  • An oxygen flame-cutting lance including a plurality of multistrand steel wires disposed to define a hollow gas-flow passage, an outer sheath of plastics material enclosing said steel wires, means for supplying oxygen to flow through said passage, and means for connecting an electric current to said steel wires.
  • An oxygen flame-cutting lance as claimed in claim 1 in which the ends of said steel wires extend into a metallic sleeve adapted for connection to a supply of oxygen and provided with a terminal for connection of an electrical lead.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)

Abstract

A flame-cutting lance which is flexible and composed of a plurality of multistrand steel wires forming a hollow core within an outer sheath of plastics material, oxygen being supplied to flow through the hollow core and an electric current applied to the steel wires when the lance is in use.

Description

United States Patent Inventor Reginald Clueas 234 Northgate Cottingham, Hull, Yorkshire, England Appl. No. 866,311 Filed Oct. 14, 1969 Patented July 6, 1971 Priority Oct. 30,1968 Great Britain 51404/68 FLAME-CUTTING TORCH 2 Claims, 3 Drawing Figs.
U.S. Cl 219/70,
[51] Int. Cl .r 823k 35/02 [50] Field of Search 219/70, 74, 75,1530, I45 146 [56] References Cited UNITED STATES PATENTS 2,802,930 8/1957 Ronay Primary ExaminerR. F. Staubly Att0meyP0lachek & Saulsbury ABSTRACT: A flame-cutting lance which is flexible and composed of a plurality of multistrand steel wires forming a hollow core within an outer sheath of plastics material, oxygen being supplied to flow through the hollow core and an electric current applied to the steel wires when the lance is in use.
PATENTEUJUL elm: 3.591, 758
Fagl.
REGINALD C2 0045 :JTLIRNE 5 FLAME-CUTTING TORCH BACKGROUND TO THE INVENTION Flame-cutting lances at present in use are rigid and necessarily of limited length, and have disadvantage of being breakable when made of carbon and of requiring heavy electrical current. There are, therefore, restrictions in use of known oxygen lances, particularly in underwater operations,-
and difficulties due to rapid consumption of the lance or on account of the large current generator necessary to supply the electric current. Other lances are made of a metallic sleeve containing a soft-iron multistrand wire core and are unwieldly.
The object therefore of the present invention is to provide an oxygen lance suitable for cutting into or through metals which may be of infinite length yet strong, convenient to use and unbreakable and suitable for air and underwater use.
A further object of the invention is to provide a torch in which multistrand steel wires form a hollow core within an outer sheath of plastics material through which oxygen may be caused to flow and to which electric current is applied when in use. The steel of the wires is preferably high-tensile steel, as distinct from soft-iron in known lances which burn away quickly, and the sheath, which may be composed of a variety of plastics materials, serves to contain the oxygen gas within the length of the lances as well as provide electrical insulation.
The sheath of plastics material, such as nylon, may be provided by winding on, with overlapping, a web or ribbon of the material with adhering or fusing together of the overlapping portions; by coating with liquid or powder material subsequently treated to form a homogeneous, gastight sheath; or by other method known in the plastics-material art. Such sheath which is conveniently the thicker the better not only confines the oxygen gas but prevents splaying out of the hightensile steel wires which tend to fuse together before disintegrating and may burn away more quickly than the sheath.
The electric current applied to the steel wires of the lance may be of the order of some 160 amps, that is to say quite low as compared with the known carbon lances which require something like 400 amps.
One end of the flexible lance is provided with an end fitting for connecting the oxygen gas supply and the electrical supply, when such fitting may comprise a copper or other conductive tube which may be forced into the hollow core and a ferrule or sleeve to overlie the ends of the steel wires with the plastics material extending over at least part of the length thereof. Beyond the end of the lance the tube or the sleeve is formed as, or intimately connected to, a threaded member serving as a union member for cooperating with a complementary coupling member of an oxygen-supply hose. The sleeve may also be provided with a terminal or the equivalent to which an electric supply cable may be connected, the current return being through earth.
In the use of the lance, oxygen gas is supplied thereto and also electric current and then when the work end of the lance is made to contact a metal a spark occurs which ignites the gas and the torch continues to burn with consumption of the lance until the gas supplyis cut off. The flexibility of the lance enables it to be made in appreciable length, so avoiding interruptions in the operation as with known limited-length lances, as well as making it convenient to use and suitable for operations not possible with a rigid lance, and especially so in submarine operations.
BRIEF DESCRIPTION OF THE DRAWINGS plastics material.
DESCRIPTION OF PREFERRED EMBODIMENT OF THE- INVENTION The flexible lance is composed of a multicore multistrand high-tensile steel cable, such as in commercially available and used for example as a crane cable, but without the center core so that it comprises in section (see FIGS. 2 and 3) a ring of wire strands l enclosing a hollow core 3 which serves as the oxygen gas flow path, and of an outer sheath 2 of plastics material which confines the gas supplied to the lance to flow within the hollow core 3 as well as provides electrical insulation.
An end fitting of convenient design is provided, and as illustrated in FIG. 1 comprises a copper tube 4 which is forced into the hollow core and is fast with an outer metallic sleeve 5 which clamps onto the metal wires. The sheath 2 extends at least partly along the length of the sleeve 5, which is also provided with a clamping tenninal 6, or the like, for the connecting-on of a current-conducting cable. The tube 4 is at its outer end formed as, or made fast to, a threaded union member 7 capable of engaging a complementary union member of an oxygen-supply hose.
A flexible cover sleeve may also be positioned over the exposed end of the fitting to enclose the electric cable end and gas-supply hose, particularly for underwater use.
I claim:
1. An oxygen flame-cutting lance including a plurality of multistrand steel wires disposed to define a hollow gas-flow passage, an outer sheath of plastics material enclosing said steel wires, means for supplying oxygen to flow through said passage, and means for connecting an electric current to said steel wires.
2. An oxygen flame-cutting lance as claimed in claim 1 in which the ends of said steel wires extend into a metallic sleeve adapted for connection to a supply of oxygen and provided with a terminal for connection of an electrical lead.

Claims (2)

1. An oxygen flame-cutting lance including a plurality of multistrand steel wires disposed to define a hollow gas-flow passage, an outer sheath of plastics material enclosing said steel wires, means for supplying oxygen to flow through said passage, and means for connecting an electric current to said steel wires.
2. An oxygen flame-cutting lance as claimed in claim 1 in which the ends of said steel wires extend into a metallic sleeve adapted for connection to a supply of oxygen and provided with a terminal for connection of an electrical lead.
US866311A 1968-10-30 1969-10-14 Flame-cutting torch Expired - Lifetime US3591758A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB51404/68A GB1188079A (en) 1968-10-30 1968-10-30 Improvements in or relating to Cutting Torches

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US3591758A true US3591758A (en) 1971-07-06

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835288A (en) * 1971-11-05 1974-09-10 H Henderson Arc-welding electrode
US4069407A (en) * 1975-12-10 1978-01-17 Brower Jerome S Underwater cutting rod
FR2379347A1 (en) * 1977-02-04 1978-09-01 Brower Jerome Arc burner for underwater cutting - where arc triggers a thermite reaction in an electrode fed with oxygen
US4182947A (en) * 1975-12-10 1980-01-08 Brower Jerome S Underwater cutting rod
EP0067349A1 (en) * 1981-06-16 1982-12-22 Arcair Company Exothermic cutting electrode
US4437649A (en) 1981-06-16 1984-03-20 Arcair Company Exothermic cutting electrode
US4654496A (en) * 1984-04-11 1987-03-31 Peter L. DeMarsh Underwater oxy-arc cutting system using a non-thermic cutting rod
US4660807A (en) * 1986-01-31 1987-04-28 Campana Patsie C Wrapped thermal torch and method
US4697791A (en) * 1985-12-31 1987-10-06 Arcair Company Exothermic cutting electrode
US4864093A (en) * 1988-10-05 1989-09-05 Arcair Company Exothermic cutting electrode
US20040041310A1 (en) * 2001-06-01 2004-03-04 Vladimir Hlavacek Continuous hot rod
WO2013130750A3 (en) * 2012-02-29 2014-02-27 The Osen-Hunter Group, LLC Silent entry torching and oxygen delivery system and configuration
US20150298263A1 (en) * 2012-10-24 2015-10-22 Liburdi Engineering Limited Composite welding wire and method of manufacturing
US9446468B2 (en) 2012-02-29 2016-09-20 The Osen-Hunter Group, LLC Silent entry torching and oxygen delivery system and configuration
US9849536B2 (en) 2012-02-29 2017-12-26 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration
WO2018053471A1 (en) * 2016-09-19 2018-03-22 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK106684A (en) * 1983-03-22 1984-09-23 Niinivaara T UNDERWATER ELECTRODE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802930A (en) * 1955-04-25 1957-08-13 Bela M Ronay Alloy cast iron arc-oxygen cutting electrode

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802930A (en) * 1955-04-25 1957-08-13 Bela M Ronay Alloy cast iron arc-oxygen cutting electrode

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835288A (en) * 1971-11-05 1974-09-10 H Henderson Arc-welding electrode
US4069407A (en) * 1975-12-10 1978-01-17 Brower Jerome S Underwater cutting rod
US4182947A (en) * 1975-12-10 1980-01-08 Brower Jerome S Underwater cutting rod
FR2379347A1 (en) * 1977-02-04 1978-09-01 Brower Jerome Arc burner for underwater cutting - where arc triggers a thermite reaction in an electrode fed with oxygen
EP0067349A1 (en) * 1981-06-16 1982-12-22 Arcair Company Exothermic cutting electrode
US4391209A (en) * 1981-06-16 1983-07-05 Arcair Company Exothermic cutting electrode
US4437649A (en) 1981-06-16 1984-03-20 Arcair Company Exothermic cutting electrode
US4654496A (en) * 1984-04-11 1987-03-31 Peter L. DeMarsh Underwater oxy-arc cutting system using a non-thermic cutting rod
US4697791A (en) * 1985-12-31 1987-10-06 Arcair Company Exothermic cutting electrode
US4660807A (en) * 1986-01-31 1987-04-28 Campana Patsie C Wrapped thermal torch and method
US4864093A (en) * 1988-10-05 1989-09-05 Arcair Company Exothermic cutting electrode
US20040041310A1 (en) * 2001-06-01 2004-03-04 Vladimir Hlavacek Continuous hot rod
WO2013130750A3 (en) * 2012-02-29 2014-02-27 The Osen-Hunter Group, LLC Silent entry torching and oxygen delivery system and configuration
US9056362B2 (en) 2012-02-29 2015-06-16 The Osen-Hunter Group, LLC Silent entry torching and oxygen delivery system and configuration
US9446468B2 (en) 2012-02-29 2016-09-20 The Osen-Hunter Group, LLC Silent entry torching and oxygen delivery system and configuration
US9849536B2 (en) 2012-02-29 2017-12-26 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration
US10155275B2 (en) 2012-02-29 2018-12-18 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration
US20150298263A1 (en) * 2012-10-24 2015-10-22 Liburdi Engineering Limited Composite welding wire and method of manufacturing
WO2018053471A1 (en) * 2016-09-19 2018-03-22 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration

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Publication number Publication date
GB1188079A (en) 1970-04-15
FR2021884A1 (en) 1970-07-24

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