GB379889A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB379889A
GB379889A GB28006/31A GB2800631A GB379889A GB 379889 A GB379889 A GB 379889A GB 28006/31 A GB28006/31 A GB 28006/31A GB 2800631 A GB2800631 A GB 2800631A GB 379889 A GB379889 A GB 379889A
Authority
GB
United Kingdom
Prior art keywords
cathode
grid
stem
envelope
anode
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
GB28006/31A
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 GB379889A publication Critical patent/GB379889A/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
    • H01J17/50—Thermionic-cathode tubes
    • H01J17/52—Thermionic-cathode tubes with one cathode and one anode
    • H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
    • H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/50—Thermionic-cathode tubes
    • H01J17/52—Thermionic-cathode tubes with one cathode and one anode

Abstract

379,889. Disc.harge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Kallenbach, G. K. ; 211, Bradley Street, Schenectady, New York, U.S.A.) Oct. 8, 1931, No. 28006. Convention date, Oct. 8, 1930. [Class 39 (i).] In an arc-discharge device in which the anode and cathode are mounted on opposite stems and a control electrode or grid surrounds the anode, charges on the envelope, due to the discharge in the space between the cathode and grid, are reduced by providing metallic members extending to the grid from the stem supporting the cathode. The anode 8 is mounted on a stem 3 and the cathode 5 on a stem 2, and a control electrode 15 surrounding the anode is supported partly on the stem 3 and has equally spaced rods 11 joined to a metal band 12 clamped around the stem 2 ; the rods being closer to the envelope and cathode than is the main part of the control electrode, prevent the formation of charges on the envelope. A heat shield 7 is secured to the supports for the cathode. A flanged metal member 10 on the grid excludes ionization from the annular space between the grid and the envelope. The grid lead is connected to the band 12. The filling may be mercury vapour, argon, helium, or neon at a pressure of 1-100 microns.
GB28006/31A 1930-10-08 1931-10-08 Improvements in and relating to electric discharge devices Expired GB379889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US487272A US2027175A (en) 1930-10-08 1930-10-08 Grid construction of electric discharge devices

Publications (1)

Publication Number Publication Date
GB379889A true GB379889A (en) 1932-09-08

Family

ID=23935063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28006/31A Expired GB379889A (en) 1930-10-08 1931-10-08 Improvements in and relating to electric discharge devices

Country Status (4)

Country Link
US (1) US2027175A (en)
DE (1) DE639908C (en)
FR (3) FR723932A (en)
GB (1) GB379889A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636144A (en) * 1951-02-03 1953-04-21 Raytheon Mfg Co Gaseous discharge device

Also Published As

Publication number Publication date
FR723932A (en) 1932-04-18
FR41679E (en) 1933-03-10
US2027175A (en) 1936-01-07
DE639908C (en) 1936-12-17
FR40920E (en) 1932-09-16

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