GB149076A - Improvements in or relating to the construction of thermionic valves - Google Patents

Improvements in or relating to the construction of thermionic valves

Info

Publication number
GB149076A
GB149076A GB1157819A GB1157819A GB149076A GB 149076 A GB149076 A GB 149076A GB 1157819 A GB1157819 A GB 1157819A GB 1157819 A GB1157819 A GB 1157819A GB 149076 A GB149076 A GB 149076A
Authority
GB
United Kingdom
Prior art keywords
filament
tubes
fused
bulb
wire
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
GB1157819A
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 GB1157819A priority Critical patent/GB149076A/en
Publication of GB149076A publication Critical patent/GB149076A/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
    • 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

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

149,076. Mullard, S. R. May 8, 1919. Vacuum tubes. - A thermionic valve has a cylindrical anode 14 mounted co-axially in a silica bulb by means of wires or rods 17, which are sealed within sleeves 18 fused to radial extensions 12 of silica rings 11 supporting the grid, and to the bulb. The grid consists of wire 4 wound around three wires 5 secured in hollow sleeves 8 fused to the rings 11. The filament cathode 2 is mounted in long narrow seals consisting of tubes 3, fused to the outer ends of other tubes 30, so as to permit of re-sealing after a filament has been replaced. The filament may be supported at the centre from a wire 22 secured to the tubes 3 by horns 26 and lacing 27. Expansion coils 24 may be connected to the filament and to the wire 22. According to the Provisional Specification, the anode may be supported at each end by three metal strips sprung outwards to engage in silica sleeves on the bulb.
GB1157819A 1919-05-08 1919-05-08 Improvements in or relating to the construction of thermionic valves Expired GB149076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1157819A GB149076A (en) 1919-05-08 1919-05-08 Improvements in or relating to the construction of thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1157819A GB149076A (en) 1919-05-08 1919-05-08 Improvements in or relating to the construction of thermionic valves

Publications (1)

Publication Number Publication Date
GB149076A true GB149076A (en) 1920-08-09

Family

ID=9988803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1157819A Expired GB149076A (en) 1919-05-08 1919-05-08 Improvements in or relating to the construction of thermionic valves

Country Status (1)

Country Link
GB (1) GB149076A (en)

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