GB665469A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB665469A
GB665469A GB2793448A GB2793448A GB665469A GB 665469 A GB665469 A GB 665469A GB 2793448 A GB2793448 A GB 2793448A GB 2793448 A GB2793448 A GB 2793448A GB 665469 A GB665469 A GB 665469A
Authority
GB
United Kingdom
Prior art keywords
cathode
vessel
heat
sealed
oct
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
GB2793448A
Inventor
David Lorimer Smart
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB2793448A priority Critical patent/GB665469A/en
Publication of GB665469A publication Critical patent/GB665469A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
    • H01J13/02—Details
    • H01J13/04—Main electrodes; Auxiliary anodes
    • H01J13/06—Cathodes
    • H01J13/10—Containers for the liquid pool; Arrangements or mounting thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0072—Disassembly or repair of discharge tubes
    • H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
    • H01J2893/0074—Cathodic cups; Screens; Reflectors; Filters; Windows; Protection against mercury deposition; Returning condensed electrode material to the cathodic cup; Liquid electrode level control
    • H01J2893/0075—Cathodic cups
    • H01J2893/0077—Cathodic cup construction; Cathodic spot control

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

665,469. Metal-vapour discharge apparatus. ENGLISH ELECTRIC CO.; Ltd. Oct. 21, 1949 [Oct. 27, 1948], No. 27934/48. Class 39 (i). The liquid-cathode of an electric discharge device, cooled by air convection and radiation, is provided with heat-absorbing means whereby, when starting from cold under normal load conditions, its temperature is maintained below normal until the anode has reached its normal operating temperature. A mercury rectifier has a steel cathode vessel 2, sealed to the envelope in accordance with Specification 666,468, and a grid 4 which supports through a glass bead 6 a movable electrode 5 for striking and maintaining the arc; the leading-in wires 7 are sealed through the vessel 2 by welded eyelets and are coated with glass. Exhaustion is effected through the eyelet 10 finally sealed by the glass tube 11. A reinforcing steel plate 12, apertured to house the leading-in wires, is copper brazed to the vessel 2, and a heatabsorbing block 13, provided with cooling fins 14 and a screwed hole 16 for a connecting bolt, is secured thereto by screws 15. The volume of the heat-absorbing means should be not less than that of the cathode liquid, and should increase the heat-absorbing capacity of the cathode at least three times. Forced-air cooling may be used.
GB2793448A 1948-10-27 1948-10-27 Improvements in and relating to electric discharge devices Expired GB665469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2793448A GB665469A (en) 1948-10-27 1948-10-27 Improvements in and relating to electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2793448A GB665469A (en) 1948-10-27 1948-10-27 Improvements in and relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB665469A true GB665469A (en) 1952-01-23

Family

ID=10267632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2793448A Expired GB665469A (en) 1948-10-27 1948-10-27 Improvements in and relating to electric discharge devices

Country Status (1)

Country Link
GB (1) GB665469A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724786A (en) * 1952-01-26 1955-11-22 Electrons Inc Grid control gaseous discharge rectifier tube
US2724785A (en) * 1952-01-26 1955-11-22 Reliance Electric & Eng Co Envelope structure for mercury pool rectifier tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724786A (en) * 1952-01-26 1955-11-22 Electrons Inc Grid control gaseous discharge rectifier tube
US2724785A (en) * 1952-01-26 1955-11-22 Reliance Electric & Eng Co Envelope structure for mercury pool rectifier tubes

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