GB450971A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB450971A
GB450971A GB250935A GB250935A GB450971A GB 450971 A GB450971 A GB 450971A GB 250935 A GB250935 A GB 250935A GB 250935 A GB250935 A GB 250935A GB 450971 A GB450971 A GB 450971A
Authority
GB
United Kingdom
Prior art keywords
gauze
cathode
plates
welded
discharge devices
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
GB250935A
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
Priority to GB250935A priority Critical patent/GB450971A/en
Priority to DEA6122D priority patent/DE879129C/en
Publication of GB450971A publication Critical patent/GB450971A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00Gas-filled discharge tubes with solid cathode
    • H01J17/02Details
    • H01J17/04Electrodes; Screens
    • H01J17/06Cathodes

Landscapes

  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Discharge Lamp (AREA)

Abstract

450,971. Thermionic cathodes. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and KNIGHT, H. DE B., 108, Eastlands Road, Rugby. Jan. 25, 1935, No. 2509. [Class 39 (i)] A cathode of the directly or indirectly heated type and particularly for use in gas or vapour filled discharge devices consists of gauze sheets welded on to the sides of plates, the gauze receiving the emissive material such as a mixture of barium and strontium carbonates, which is subsequently reduced. As shown a number of plates 3 are welded together to form a cylinder with radial vanes and central tube 2, which receives the heater 1 ; the gauze sheets are welded to some or all sides of the plates 3. Heat shields 4, 5 surround the cathode. According to the Provisional Specification the cathode may be made of rolled gauze impregnated with emissive material.
GB250935A 1935-01-25 1935-01-25 Improvements in and relating to electric discharge devices Expired GB450971A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB250935A GB450971A (en) 1935-01-25 1935-01-25 Improvements in and relating to electric discharge devices
DEA6122D DE879129C (en) 1935-01-25 1936-01-26 Vapor or gas-filled discharge vessel with a directly or indirectly heated, strip-shaped cathode provided with an emission layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB250935A GB450971A (en) 1935-01-25 1935-01-25 Improvements in and relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB450971A true GB450971A (en) 1936-07-27

Family

ID=9740802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB250935A Expired GB450971A (en) 1935-01-25 1935-01-25 Improvements in and relating to electric discharge devices

Country Status (2)

Country Link
DE (1) DE879129C (en)
GB (1) GB450971A (en)

Also Published As

Publication number Publication date
DE879129C (en) 1953-06-11

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