GB272879A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB272879A
GB272879A GB14304/27A GB1430427A GB272879A GB 272879 A GB272879 A GB 272879A GB 14304/27 A GB14304/27 A GB 14304/27A GB 1430427 A GB1430427 A GB 1430427A GB 272879 A GB272879 A GB 272879A
Authority
GB
United Kingdom
Prior art keywords
filament
rod
anode
insulator
supported
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
GB14304/27A
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 GB272879A publication Critical patent/GB272879A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements

Landscapes

  • Lasers (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

272,879. British Thomson-Houston Co., Ltd., (Assignees of White, W. C.). June 18, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Vacuum tubes. - In electron discharge devices, such as highvoltage rectifiers, having a filamentary cathode and a surrounding anode, an insulator is mounted within the anode and provided with means engaging the filament at a point intermediate its ends to prevent vibration of the filament and contact between the filament and anode. A long anode cylinder may be supported from one end of the glass envelope and a glass stem a,t the other end may carry tungsten leads 5 and a tungsten or molybdenum rod 7, the V-shaped filament 3 being connected to the leads 5 and supported at its bight by a hook at the end of the rod 7. An alumina magnesia or other insulator 8 with embedded wire guides 9 for the filament is slidably fitted to the rod 7 and maintained in position by buttons 10, 11 welded to the rod 7.
GB14304/27A 1926-06-18 1927-05-27 Improvements in electron discharge devices Expired GB272879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US116970A US1723904A (en) 1926-06-18 1926-06-18 Electron-discharge device

Publications (1)

Publication Number Publication Date
GB272879A true GB272879A (en) 1927-11-10

Family

ID=22370319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14304/27A Expired GB272879A (en) 1926-06-18 1927-05-27 Improvements in electron discharge devices

Country Status (2)

Country Link
US (1) US1723904A (en)
GB (1) GB272879A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461337A (en) * 1964-08-15 1969-08-12 Nippon Electric Co Electron discharge device filament structure

Also Published As

Publication number Publication date
US1723904A (en) 1929-08-06

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