GB358614A - Improvements in and relating to gaseous electric discharge devices - Google Patents

Improvements in and relating to gaseous electric discharge devices

Info

Publication number
GB358614A
GB358614A GB21956/30A GB2195630A GB358614A GB 358614 A GB358614 A GB 358614A GB 21956/30 A GB21956/30 A GB 21956/30A GB 2195630 A GB2195630 A GB 2195630A GB 358614 A GB358614 A GB 358614A
Authority
GB
United Kingdom
Prior art keywords
electrode
connections
cathode
july
nickel
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
GB21956/30A
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 GB358614A publication Critical patent/GB358614A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems

Landscapes

  • Lasers (AREA)
  • Discharge Lamp (AREA)

Abstract

358,614. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Foulke, T. E. ; 410, 8th Street, Hoboken, New Jersey, U.S.A.) July 21, 1930, No. 21956. Convention date, July 27, 1929. (Class 39 (i).] A discharge tube which may be used as a polarity indicator or rectifier contains two electrodes, the anode 4 being concealed within the cathode 5 so that when the tube is inserted in a holder with correct connections the cathode glow is visible, but no glow can be seen if the connections are incorrect. The electrode 5 is made of or coated with a material of low work function so that a discharge passes more readily when the connections are correctly made. The electrode 5 may be of nickel, iron, nickel-plated iron, &c., and may be coated with an alkali or alkaline-earth metal or compound such as potassium, barium, potassium, hydroxide, barium carbonate, &c., which may be treated in any usual way. A small piece of magnesium or aluminium 7 is attached to the electrode 5 which when vaporized cleans up undesired gases and promotes activation of the coating on the electrode 5. A resistance 9 of several thousand ohms is inserted in the cathode lead. Specification 138,642, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
GB21956/30A 1929-07-27 1930-07-21 Improvements in and relating to gaseous electric discharge devices Expired GB358614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US358614XA 1929-07-27 1929-07-27

Publications (1)

Publication Number Publication Date
GB358614A true GB358614A (en) 1931-10-15

Family

ID=21885228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21956/30A Expired GB358614A (en) 1929-07-27 1930-07-21 Improvements in and relating to gaseous electric discharge devices

Country Status (1)

Country Link
GB (1) GB358614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038659B (en) * 1954-01-08 1958-09-11 British Thomson Houston Co Ltd Antenna switch tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038659B (en) * 1954-01-08 1958-09-11 British Thomson Houston Co Ltd Antenna switch tubes

Similar Documents

Publication Publication Date Title
GB358614A (en) Improvements in and relating to gaseous electric discharge devices
GB369348A (en) Improvements in the manufacture of electric discharge vessels
GB367271A (en) Improvements in luminous electric discharge tubes
GB644409A (en) Improvements in electric discharge lamps
GB397107A (en) Improvements in and relating to electric discharge devices
GB372154A (en) Improvements in luminous electric discharge tubes
GB365434A (en) Improvements in luminous electric discharge tubes
GB406611A (en) Improvements in luminous electric discharge tubes
GB446734A (en) Improvements in the construction of electrodes for electric discharge devices
GB463853A (en) Improvements in cathode glow lamps
GB356234A (en)
GB352756A (en) Improvements in and relating to gaseous electric discharge devices
GB352353A (en) Improvements in luminous electric discharge tubes
GB384857A (en) Improvements in luminous electric discharge tubes
GB438727A (en) Improvements in electric discharge devices
GB604785A (en) Improvements in or relating to the exhaust tube constructions in the envelopes of electric discharge tubes
GB479920A (en) Improvements in and relating to electric discharge devices
GB389418A (en) Improvements in luminous electric discharge lamps
GB359842A (en) Improvements in and relating to electric mercury or other conducting liquid switches
GB219395A (en) Improvements in electric discharge lamps
GB346808A (en) Improvements in and relating to electric glow discharge devices
GB405499A (en) Improvements in and relating to gaseous electric discharge apparatus
GB404865A (en) Improvements in electric arc lamps
GB457644A (en) Improvements in high pressure metal vapour electric discharge devices
GB365147A (en) Improvements in and relating to gaseous electric discharge devices