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GB674878A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB674878A
GB674878A GB5388/49A GB538849A GB674878A GB 674878 A GB674878 A GB 674878A GB 5388/49 A GB5388/49 A GB 5388/49A GB 538849 A GB538849 A GB 538849A GB 674878 A GB674878 A GB 674878A
Authority
GB
United Kingdom
Prior art keywords
group
per cent
electric discharge
weight
relating
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
GB5388/49A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB674878A publication Critical patent/GB674878A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel

Landscapes

  • Conductive Materials (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

674,878. Glass-to-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 28, 1949 [March 3, 1948], No. 5388/49. Class 36. [Also in Group XL (a)] The joint cement 19 between the glass tube 2 and metal base 17 of an electric discharge device (see Group XL (a)) is made electrically conducting by the addition of carbon, and may comprise 15-17 per cent by weight of a resin consisting of one part by weight of a commercial plastic moulding compound, four parts resin and six and one half parts shellac, and 83-85 per cent marble flour filler, of which 8-20 per cent is graphite flakes. Reference has been directed by the Comptroller to Specifications 592,248, [Group XL], and 647,778, [Group XL (a)].
GB5388/49A 1948-03-03 1949-02-28 Improvements in and relating to electric discharge devices Expired GB674878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12788A US2508118A (en) 1948-03-03 1948-03-03 Starting strip for electric discharge devices

Publications (1)

Publication Number Publication Date
GB674878A true GB674878A (en) 1952-07-02

Family

ID=21756699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5388/49A Expired GB674878A (en) 1948-03-03 1949-02-28 Improvements in and relating to electric discharge devices

Country Status (3)

Country Link
US (1) US2508118A (en)
FR (1) FR982257A (en)
GB (1) GB674878A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE510237A (en) * 1951-03-29
US2893289A (en) * 1953-03-09 1959-07-07 Harold E Edgerton Microscope flash-photography system and apparatus
DE1028685B (en) * 1956-08-01 1958-04-24 Patra Patent Treuhand Electric discharge lamp with internal ignition, in particular fluorescent lamp
GB1476160A (en) * 1973-12-21 1977-06-10 Heimann Gmbh Pulse discharge lamps
US4084208A (en) * 1975-03-28 1978-04-11 General Instrument Corporation Gas-filled surge arrestors
US4506192A (en) * 1983-02-22 1985-03-19 Gte Laboratories Incorporated Fluorescent lamp and a base thereof
US4878854A (en) * 1988-05-31 1989-11-07 Gte Products Corporation Lamp base
US4854888A (en) * 1988-05-31 1989-08-08 Gte Products Corporation Lamp base
US6563265B1 (en) * 2000-11-06 2003-05-13 General Electric Company Applying prealloyed powders as conducting members to arc tubes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922221A (en) * 1929-07-20 1933-08-15 Westinghouse Electric & Mfg Co Resistance material
GB446833A (en) * 1934-11-06 1936-05-06 British Thomson Houston Co Ltd Improvements in and relating to electric discharge lamps
DE636027C (en) * 1935-06-06 1936-09-30 Patra Patent Treuhand Electric light tubes with electrodes attached to the ends, in particular glow electrodes, and wire helix housed inside the tube
US2146579A (en) * 1936-04-22 1939-02-07 Gen Electric Electric discharge lamp

Also Published As

Publication number Publication date
US2508118A (en) 1950-05-16
FR982257A (en) 1951-06-08

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