GB643654A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB643654A
GB643654A GB2642546A GB2642546A GB643654A GB 643654 A GB643654 A GB 643654A GB 2642546 A GB2642546 A GB 2642546A GB 2642546 A GB2642546 A GB 2642546A GB 643654 A GB643654 A GB 643654A
Authority
GB
United Kingdom
Prior art keywords
wires
wire
relating
microns
bound
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
GB2642546A
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.)
REGINALD WICKHAM
Original Assignee
REGINALD WICKHAM
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 REGINALD WICKHAM filed Critical REGINALD WICKHAM
Priority to GB2642546A priority Critical patent/GB643654A/en
Publication of GB643654A publication Critical patent/GB643654A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

643,654. Springs. RANGABE, A. R., WICKHAM, R., and BUCKINGHAM, J. Sept. 3, 1946, No. 26425. [Class 108(iii)] [Also in Group XL(a)] A spring for tensioning the filament of a miniature thermionic valve comprises a bundle of wires 30 bound with finer wire 31 and formed into a single turn helix, the force exerted being a spreading one between the projecting ends 32. In manufacture, nine tungsten wires and one copper wire, all 50 microns in diameter, are bound with tungsten wire 10 microns in diameter, and the copper wire is dissolved out to permit limited relative movement of the remaining wires.
GB2642546A 1946-09-03 1946-09-03 Improvements in or relating to electron discharge devices Expired GB643654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2642546A GB643654A (en) 1946-09-03 1946-09-03 Improvements in or relating to electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2642546A GB643654A (en) 1946-09-03 1946-09-03 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB643654A true GB643654A (en) 1950-09-27

Family

ID=10243433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2642546A Expired GB643654A (en) 1946-09-03 1946-09-03 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB643654A (en)

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