GB235295A - Improvements in thermionic valves - Google Patents

Improvements in thermionic valves

Info

Publication number
GB235295A
GB235295A GB615524A GB615524A GB235295A GB 235295 A GB235295 A GB 235295A GB 615524 A GB615524 A GB 615524A GB 615524 A GB615524 A GB 615524A GB 235295 A GB235295 A GB 235295A
Authority
GB
United Kingdom
Prior art keywords
stem
spider
cap
wires
conducting
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
GB615524A
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 GB615524A priority Critical patent/GB235295A/en
Priority to FR596364D priority patent/FR596364A/en
Publication of GB235295A publication Critical patent/GB235295A/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

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

235,295. Round, H. J. March 10, 1924. Vacuum tubes.-A thermionic cathode consists of a cylinder of parallel wires or mesh supported at one end by a conducting disc carried by a conducting axial stem, and at the other end by a conducting support slidably or adjustably mounted on the stem. As shown, parallel wires 3 are connected at one end to a metal disc 2 supported on a stem 1, and at the other end to a spider 4, which is slidably mounted on the stem and insulated by a sleeve 5. The wires are kept in tension by springs 6 connected between lugs 7 on the spider and insulators on pins 8. The stem is mounted in a socket 12 on a cap 11. The spider is connected with a metal ring 13 spaced from the cap 12 and an anode 16 by glass cylinders 14, 15 fused thereto. A grid 17 is secured to a cap 18 spaced from the anode by a glass cylinder 19. In a modification, the joint between platinum rims on the ring 13 and the disc 11 is formed by a glass ring of circular section. In another arrangement, the wires form part of a helix and are intermeshed, and the spider is clamped to the stem by a screw.
GB615524A 1924-03-10 1924-03-10 Improvements in thermionic valves Expired GB235295A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB615524A GB235295A (en) 1924-03-10 1924-03-10 Improvements in thermionic valves
FR596364D FR596364A (en) 1924-03-10 1925-03-10 Improvements to thermionic tubes and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB615524A GB235295A (en) 1924-03-10 1924-03-10 Improvements in thermionic valves

Publications (1)

Publication Number Publication Date
GB235295A true GB235295A (en) 1925-06-10

Family

ID=9809400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB615524A Expired GB235295A (en) 1924-03-10 1924-03-10 Improvements in thermionic valves

Country Status (2)

Country Link
FR (1) FR596364A (en)
GB (1) GB235295A (en)

Also Published As

Publication number Publication date
FR596364A (en) 1925-10-22

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