GB170954A - Improvements in and relating to thermionic valves - Google Patents

Improvements in and relating to thermionic valves

Info

Publication number
GB170954A
GB170954A GB2294220A GB2294220A GB170954A GB 170954 A GB170954 A GB 170954A GB 2294220 A GB2294220 A GB 2294220A GB 2294220 A GB2294220 A GB 2294220A GB 170954 A GB170954 A GB 170954A
Authority
GB
United Kingdom
Prior art keywords
silica
flanges
fused
filament
tubes
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
GB2294220A
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.)
ARTHUR KENNETH MACRORIE
THOMAS EDWARD GOLDUP
Original Assignee
ARTHUR KENNETH MACRORIE
THOMAS EDWARD GOLDUP
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 ARTHUR KENNETH MACRORIE, THOMAS EDWARD GOLDUP filed Critical ARTHUR KENNETH MACRORIE
Priority to GB2294220A priority Critical patent/GB170954A/en
Publication of GB170954A publication Critical patent/GB170954A/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
    • H01J19/50—Spacing members extending to the envelope
    • 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
    • H01J2893/0005—Fixing of electrodes
    • H01J2893/0008—Supply leads; Electrode supports via rigid connection to vessel

Abstract

170,954. Macrorie, A. K., Goldup; T. E., and Mullard, S. R. Aug. 3, 1920. Vacuum tubes.-The electrodes of a thermionic valve are mounted and spaced on a frame, and enclosed in an envelope, preferably of silica, consisting of one or two end portions and a central cylindrical portion, which is secured by fusing to flanges on the end portions. As shown, the anode A is secured by molybdenum binding-wire and silica pieces C to silica, molybdenum, or other rods B, mounted on radial arms D, which carry the filament and hollow silica supports X for the grid, and are rigidly mounted at one end by means of a silica tube F fused to an end portion G, and at the other end are fixed to seali.ng-in tubes T, V for the filament leads. After the electrodes have been mounted on the frame, the central cylindrical portion K of the envelope is placed in position and fused to flanges M, L on the end portions G, H, which are of substantially non-re-entrant shape. In a modification, the central poition is made integral with one end portion, and is fused to flanges on the other end portion, and on a sealing-tube, the electrode frame being supported at one end only by the filament sealing-in tubes. Specifications 170,096, 170,097, 170,634, 170,953, and 170,955 are referred to.
GB2294220A 1920-08-03 1920-08-03 Improvements in and relating to thermionic valves Expired GB170954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2294220A GB170954A (en) 1920-08-03 1920-08-03 Improvements in and relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2294220A GB170954A (en) 1920-08-03 1920-08-03 Improvements in and relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB170954A true GB170954A (en) 1921-11-03

Family

ID=10187546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2294220A Expired GB170954A (en) 1920-08-03 1920-08-03 Improvements in and relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB170954A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431765A (en) * 1943-08-28 1947-12-02 Eitel Mccullough Inc Multigrid electron tube
US2431767A (en) * 1943-08-14 1947-12-02 Eitel Mccullough Inc Electrode mounting in electron discharge tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431767A (en) * 1943-08-14 1947-12-02 Eitel Mccullough Inc Electrode mounting in electron discharge tube
US2431765A (en) * 1943-08-28 1947-12-02 Eitel Mccullough Inc Multigrid electron tube

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