GB1003250A - Electric arc apparatus - Google Patents

Electric arc apparatus

Info

Publication number
GB1003250A
GB1003250A GB2721964A GB2721964A GB1003250A GB 1003250 A GB1003250 A GB 1003250A GB 2721964 A GB2721964 A GB 2721964A GB 2721964 A GB2721964 A GB 2721964A GB 1003250 A GB1003250 A GB 1003250A
Authority
GB
United Kingdom
Prior art keywords
arc
starting
strip
electrode
main
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
Application number
GB2721964A
Inventor
Kazimierz Goldman
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB2721964A priority Critical patent/GB1003250A/en
Publication of GB1003250A publication Critical patent/GB1003250A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/067—Starting the arc
    • B23K9/0672—Starting the arc without direct contact between electrodes
    • B23K9/0678—Ionization of the arc gap by means of an auxiliary arc

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)

Abstract

1,003,250. Arc blow-torches. BRITISH OXYGEN CO. Ltd. July 1, 1964, No. 27219/64. Addition to 979,353. Heading H5H. [Also in Division B3] Gas-shielded A.C. electric arc equipment has an auxiliary starting and maintaining electrode 11 attached to a bi-metallic strip 10. The strip is heated either directly by the starting D.C. current from rectifier 13 as shown, or indirectly by the heat of the main electrode 2 or by an auxiliary heater in the starting current circuit (Fig. 2, not shown). The electrode 11 initially touches the main electrode; consequent bending of the strip 10 upon closure of switch 6 opens a gap, drawing an arc between the electrodes, so ionizing the gas and starting the main arc. The strip remains heated to maintain the gap and the arc during main current zeros but resets automatically after shut-down. The main electrode is of tungsten and is non-consumable.
GB2721964A 1964-07-01 1964-07-01 Electric arc apparatus Expired GB1003250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2721964A GB1003250A (en) 1964-07-01 1964-07-01 Electric arc apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2721964A GB1003250A (en) 1964-07-01 1964-07-01 Electric arc apparatus

Publications (1)

Publication Number Publication Date
GB1003250A true GB1003250A (en) 1965-09-02

Family

ID=10256086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2721964A Expired GB1003250A (en) 1964-07-01 1964-07-01 Electric arc apparatus

Country Status (1)

Country Link
GB (1) GB1003250A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832513A (en) * 1973-04-09 1974-08-27 G Klasson Starting and stabilizing apparatus for a gas-tungsten arc welding system
EP0001069A1 (en) * 1977-09-10 1979-03-21 Messer Griesheim Gmbh Welding current source for arc welding with alternating current
EP0001390A1 (en) * 1977-09-08 1979-04-18 Messer Griesheim Gmbh Welding current source for arc welding supplying a D.C. voltage for ignition and an A.C. voltage for welding
US20210101224A1 (en) * 2019-10-02 2021-04-08 The Esab Group Inc. Shape Memory Alloy Starter for a Plasma Cutting Torch or Welder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832513A (en) * 1973-04-09 1974-08-27 G Klasson Starting and stabilizing apparatus for a gas-tungsten arc welding system
EP0001390A1 (en) * 1977-09-08 1979-04-18 Messer Griesheim Gmbh Welding current source for arc welding supplying a D.C. voltage for ignition and an A.C. voltage for welding
EP0001069A1 (en) * 1977-09-10 1979-03-21 Messer Griesheim Gmbh Welding current source for arc welding with alternating current
US20210101224A1 (en) * 2019-10-02 2021-04-08 The Esab Group Inc. Shape Memory Alloy Starter for a Plasma Cutting Torch or Welder

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