GB531076A - Improvements in or relating to thermionic electrode structures - Google Patents

Improvements in or relating to thermionic electrode structures

Info

Publication number
GB531076A
GB531076A GB1570839A GB1570839A GB531076A GB 531076 A GB531076 A GB 531076A GB 1570839 A GB1570839 A GB 1570839A GB 1570839 A GB1570839 A GB 1570839A GB 531076 A GB531076 A GB 531076A
Authority
GB
United Kingdom
Prior art keywords
elements
springs
cathode
thermionic
insulated
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
GB1570839A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE476636D priority Critical patent/BE476636A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1570839A priority patent/GB531076A/en
Publication of GB531076A publication Critical patent/GB531076A/en
Priority to FR941242D priority patent/FR941242A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Landscapes

  • Discharge Lamp (AREA)

Abstract

531,076. Thermionic cathodes. STANDARD TELEPHONES & CABLES. Ltd.. and PARKER. P. May 26, 1939, No. 15708. [Class 39 (i)] A thermionic valve comprises a tensioned non- rigid tubular indirectlyheated cathode element with an insulated heater wire extending loosely through it. In the form shown, a number of tubular cathode elements C of copper coated with emissive material are disposed in a coplanar and parallel relation between two lavite end members E. The tensioning is effected by springs S seated in recesses in the member E with one end joined by a wire W to the cathode element. The other ends of the cathode elements are fixed by stalks or projections into the other member E, for instance as described in Specifications 523,460 and 530,300. Insulated hairpin heaters H are provided. Instead of individual springs, a single end bridge member may be attached to a spring or springs to tension all the elements. Examples of dimensions are given and the elements preferably have a length more than thirty times the smallest width dimension.
GB1570839A 1939-05-26 1939-05-26 Improvements in or relating to thermionic electrode structures Expired GB531076A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE476636D BE476636A (en) 1939-05-26
GB1570839A GB531076A (en) 1939-05-26 1939-05-26 Improvements in or relating to thermionic electrode structures
FR941242D FR941242A (en) 1939-05-26 1947-01-08 Electrode construction methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1570839A GB531076A (en) 1939-05-26 1939-05-26 Improvements in or relating to thermionic electrode structures

Publications (1)

Publication Number Publication Date
GB531076A true GB531076A (en) 1940-12-30

Family

ID=10064044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1570839A Expired GB531076A (en) 1939-05-26 1939-05-26 Improvements in or relating to thermionic electrode structures

Country Status (3)

Country Link
BE (1) BE476636A (en)
FR (1) FR941242A (en)
GB (1) GB531076A (en)

Also Published As

Publication number Publication date
BE476636A (en)
FR941242A (en) 1949-01-05

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