GB418238A - Improvements in thermionic valves - Google Patents

Improvements in thermionic valves

Info

Publication number
GB418238A
GB418238A GB1558133A GB1558133A GB418238A GB 418238 A GB418238 A GB 418238A GB 1558133 A GB1558133 A GB 1558133A GB 1558133 A GB1558133 A GB 1558133A GB 418238 A GB418238 A GB 418238A
Authority
GB
United Kingdom
Prior art keywords
strip
filament
mica
thomas
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
GB1558133A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1558133A priority Critical patent/GB418238A/en
Publication of GB418238A publication Critical patent/GB418238A/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
    • 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

Landscapes

  • Discharge Lamp (AREA)

Abstract

418,238. Thermionic valves. THOMAS, A. E. F., and THOMAS, C. E., 125, Upper Clapton Road, London. May 30, 1933, No. 15581. [Class 39 (i).] A filamentary cathode 7 of V- or W-form is supported from the central part of a mica strip 5 supported at its ends and flexed to tension the filament. The strip is carried on spacers 11 carried on the anode or grid support rods or it may rest on the anode ; the strip has holes to take over the rods. The lower ends of the filament are attached to bands 8 surrounding a lower mica strip 6 or they are connected directly to the leads 9. The upper end passes through holes in the strip 5 or is held by a spring hook 10. The lower ends of the filament may pass through slots in the mica strip 6. The posts 2 for the electrodes may be made telescopic to increase the tension on the filament.
GB1558133A 1933-05-30 1933-05-30 Improvements in thermionic valves Expired GB418238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1558133A GB418238A (en) 1933-05-30 1933-05-30 Improvements in thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1558133A GB418238A (en) 1933-05-30 1933-05-30 Improvements in thermionic valves

Publications (1)

Publication Number Publication Date
GB418238A true GB418238A (en) 1934-10-22

Family

ID=10061676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1558133A Expired GB418238A (en) 1933-05-30 1933-05-30 Improvements in thermionic valves

Country Status (1)

Country Link
GB (1) GB418238A (en)

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