US3507231A - Means for cutting hard construction materials - Google Patents

Means for cutting hard construction materials Download PDF

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Publication number
US3507231A
US3507231A US724016A US3507231DA US3507231A US 3507231 A US3507231 A US 3507231A US 724016 A US724016 A US 724016A US 3507231D A US3507231D A US 3507231DA US 3507231 A US3507231 A US 3507231A
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United States
Prior art keywords
tube
wires
torch
groove
construction materials
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Expired - Lifetime
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US724016A
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English (en)
Inventor
Robert Meier
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Individual
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Individual
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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

Definitions

  • This invention relates to improvements in oxygen burning torch pipes which are utilized for burning holes or cutting hard construction materials, such as concrete, rock, cast iron and the like.
  • torches have been constructed with unevenly disposed grooves, which grooves constrict the tube casing thereby clamping the wires contained therein.
  • the prior art arrangement of the grooves seriously disturbs the symmetry of the interior of the tube. This unsymmetrical arrangement of the prooves causes an irregular flow and consumption of oxygen.
  • Another object of this invention resides in the provision of a torch which permits the ow of gases such as oxygen therethrough to be substantially unobstructed.
  • a further object of this invention is to provide a torch eiciently utilizing oxygen for burning apertures and severing joints in a manner which is economically eicient.
  • FIG. 1 is a side elevational Iview of a first embodiment of a blowpipe with an inserted tube constructed in accordance with the concepts of the present invention.
  • FIG. 2 is a vertical sectional view of a portion of the torch and weldable wires disposed therein taken along the plane of line 2-2 in FIG. 1;
  • FIG. 3 is an enlarged fragmentary elevational view of one portion of a torch showing one embodiment of a groove disposed therealong; parts being broken away to show other parts in detail;
  • FIG. 4 is an enlarged fragmentary elevational IView of a portion of a torch showing a thermally mounted ring attached thereto; parts being broken away to show other parts in detail; and
  • FIG. 5 is an enlarged fragmentary elevational view of a section of a torch pipe showing a thermally mounted ring clamped by a nut, parts being broken away to show other parts in detail.
  • reference numeral 10 is generally used to designate the torch of the present invention.
  • the torch 10 includes an oxygen supply 12 having a control valve 14, an insertable cylindrical steel tube 18 attached via connecting member 16, connecting member 16 being of greater diameter than tube 18.
  • Tube 18 is hollow and filled with weldable wires 20 as shown in FIG. 2, having at least one annular groove 22 which will be described more fully hereinbelow.
  • FIGS. 3 5 represent alternative constructions of these grooves.
  • FIG. 3 provides an annular recess or groove 24 made in a conventional manner, for example, on a lathe.
  • a tool consisting of three knurling rollers can be employed, the rollers being at equal distances from one another, their reciprocal distances diminishing gradually during the rotation about the tube.
  • the depth of groove 24 isso selected that the deformation of the outside of the tube brought about during the processing by outside pressure causes a corresponding contraction of the inside diameter of the tube at 26 and simultaneously to clamping of wires 28.
  • Wires 30 are clamped when a heated ring 32, mounted on the tube jacket 18, contracts upon cooling and shrinking. During the shrinking of the ring great forces develop, leading to the formation of grooves 34, the inner contraction 36 of tube 15 causing the clamping of wires 30.
  • FIG. 5 shows a construction modification wherein a ring 38 is mounted.
  • a shallow groove 40 may be preformed and the ring 38 may be mounted upon heating, the subsequent shrinkage or contraction of ring 38 not yet causing any change in the ⁇ shape of the tube jacket 18.
  • Pressure is exerted by an outer clamp or casing 42 which is secured to tube 18 by means of a screw thread 44, the inner portion of outer casing 42 having a conical opening 46 therein and defining as tapered Cam surface 39.
  • outer casing 42 moves axially in the direction of arrow 48, ring 38 is pressed against the outer portion of tube 18 by the cam surface 39. This pressure may be continued until the wires 50 are sufciently camped through the resulting inner constriction at 52.
  • the casing 42 may be an integral part of connection member 16.
  • the torch may have one or more of the above-described annular grooves depending on the length of the tube. Furthermore, if a milled groove is formed, it may be smooth or raised.
  • a torch for cutting hard construction materials comprising a gas supply line, control means for controlling ow of gas through said supply line, a tube inserted in said supply line, means connecting and communicating said supply line with said tube, and a plurality of Weldable -wires in said tube, and means on said tube for constricting the inside diameter of said tube for causing groove means on ⁇ said tube and simultaneously clampingly holding said wires in said tube to reduce ow of gas through said tube.
  • said groove 4 means includes at least one groove at each end of said tube.
  • a torch according to claim 1 including a ring about said tube clampingly engaging said tube compressing said tube to form said groove means.
  • a torch according to claim 5 including a clamp means engaging said ring with said tube, said clamp means engaging said ring forcing said ring into said groove means.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Arc Welding In General (AREA)
US724016A 1967-11-03 1968-04-25 Means for cutting hard construction materials Expired - Lifetime US3507231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1581367A CH482489A (de) 1967-11-03 1967-11-03 Brennlanze, die an einem Ende abbrennt und mit welcher dabei nach dem Schmelzverfahren Löcher in hartgefügige Materialien brennbar sind, sowie Verfahren zur Herstellung der Brennlanze

Publications (1)

Publication Number Publication Date
US3507231A true US3507231A (en) 1970-04-21

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ID=4412143

Family Applications (1)

Application Number Title Priority Date Filing Date
US724016A Expired - Lifetime US3507231A (en) 1967-11-03 1968-04-25 Means for cutting hard construction materials

Country Status (8)

Country Link
US (1) US3507231A (en:Method)
AT (1) AT281652B (en:Method)
BE (1) BE713612A (en:Method)
CH (1) CH482489A (en:Method)
FR (1) FR1572600A (en:Method)
IL (1) IL30953A0 (en:Method)
LU (1) LU55937A1 (en:Method)
NL (1) NL6806217A (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069407A (en) * 1975-12-10 1978-01-17 Brower Jerome S Underwater cutting rod
US4391209A (en) * 1981-06-16 1983-07-05 Arcair Company Exothermic cutting electrode
US4401040A (en) * 1981-10-21 1983-08-30 Volcano Corporation Thermal torch
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
US4864093A (en) * 1988-10-05 1989-09-05 Arcair Company Exothermic cutting electrode
US10155275B2 (en) 2012-02-29 2018-12-18 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1631290A (en) * 1927-02-11 1927-06-07 Etzel Company Inc Method of and apparatus for obtaining disruptive effects
US2210640A (en) * 1939-03-28 1940-08-06 Swafford John Lex Under water cutting torch
US3260076A (en) * 1963-12-02 1966-07-12 Humberg Willi Deflagrating metallic cutting torch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1631290A (en) * 1927-02-11 1927-06-07 Etzel Company Inc Method of and apparatus for obtaining disruptive effects
US2210640A (en) * 1939-03-28 1940-08-06 Swafford John Lex Under water cutting torch
US3260076A (en) * 1963-12-02 1966-07-12 Humberg Willi Deflagrating metallic cutting torch

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069407A (en) * 1975-12-10 1978-01-17 Brower Jerome S Underwater cutting rod
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
US4401040A (en) * 1981-10-21 1983-08-30 Volcano Corporation Thermal torch
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
US4864093A (en) * 1988-10-05 1989-09-05 Arcair Company Exothermic cutting electrode
US10155275B2 (en) 2012-02-29 2018-12-18 Special Projects Operations, Inc. Silent entry torching and oxygen delivery system and configuration

Also Published As

Publication number Publication date
IL30953A0 (en) 1968-12-26
BE713612A (en:Method) 1968-10-14
AT281652B (de) 1970-05-25
NL6806217A (en:Method) 1969-05-06
CH482489A (de) 1969-12-15
LU55937A1 (en:Method) 1969-06-27
FR1572600A (en:Method) 1969-06-27

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