GB467248A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB467248A
GB467248A GB24882/35A GB2488235A GB467248A GB 467248 A GB467248 A GB 467248A GB 24882/35 A GB24882/35 A GB 24882/35A GB 2488235 A GB2488235 A GB 2488235A GB 467248 A GB467248 A GB 467248A
Authority
GB
United Kingdom
Prior art keywords
relating
electric discharge
discharge devices
sept
cathode
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
GB24882/35A
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 GB467248A publication Critical patent/GB467248A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material

Landscapes

  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

467,248. Thermionic cathodes. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 6, 1935, No. 24882. Void. Convention date, Sept. 25, 1934. [Class 39 (i)] A cathode comprises a refractory foundation metal coated with a compound such as the oxide of thorium, uranium, titanium, cerium or zirconium, or with mixtures of these com- 'pounds. The coating may be applied in a liquid suspension which may be dried on. The cathode may be used in a rectifier having a filling of argon at 1 mm.
GB24882/35A 1934-09-25 1935-09-06 Improvements in and relating to electric discharge devices Expired GB467248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US467248XA 1934-09-25 1934-09-25

Publications (1)

Publication Number Publication Date
GB467248A true GB467248A (en) 1937-06-14

Family

ID=21945030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24882/35A Expired GB467248A (en) 1934-09-25 1935-09-06 Improvements in and relating to electric discharge devices

Country Status (2)

Country Link
FR (1) FR795162A (en)
GB (1) GB467248A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477279A (en) * 1946-09-11 1949-07-26 Hanovia Chemical & Mfg Co Electrical discharge device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477279A (en) * 1946-09-11 1949-07-26 Hanovia Chemical & Mfg Co Electrical discharge device

Also Published As

Publication number Publication date
FR795162A (en) 1936-03-07

Similar Documents

Publication Publication Date Title
GB1140227A (en) Electric lamp having an envelope of transparent aluminium oxide
GB1025673A (en) An anode for a high-pressure discharge lamp
GB467248A (en) Improvements in and relating to electric discharge devices
GB550551A (en) Improvements in and relating to gettering arrangements for highly evacuated envelopes of electron discharge tubes
GB493534A (en) Improvements in and relating to electric discharge devices
GB507167A (en) Improvements relating to alloys, particularly for resistance wire for electric fires, heaters and the like
GB532198A (en) Improvements in cathode glow discharge tubes used as voltage controllers
GB1099655A (en) An anode plate for an x-ray tube
GB479920A (en) Improvements in and relating to electric discharge devices
GB397132A (en) Improvements in oxide coated thermionic cathodes
GB486502A (en) Improvements in and relating to metallic vapour discharge lamps
GB516455A (en) Improvements relating to cathode ray tubes
GB508319A (en) Improvements in heat resisting alloys
GB450552A (en) Improvements in or relating to electric arc electrodes
GB1170880A (en) Improvements in or relating to thorium-film thermionic cathodes for electrical discharge vessels.
GB490116A (en) An improved protective coating for electric heating elements
GB1205321A (en) Improvements in or relating to electrical discharge tubes
GB475480A (en) Improvements relating to thermionic valves having thoriated cathodes
GB529074A (en) Improvements in and relating to electric discharge devices
GB616046A (en) Improvements in or relating to the manufacture of condensers of the wound type
GB505438A (en) Improvements in plates of lead accumulators
GB519042A (en) Improvements in or relating to cathode ray tubes and to fluorescent screens suitabletherefor
GB710648A (en) Improvements in or relating to thermionic cathodes
GB582408A (en) Improvements in hpmv electric discharge lamps for optical projection apparatus
GB561682A (en) Method of sealing vitreous material to oxidizable metal