GB535184A - 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
GB535184A
GB535184A GB2687339A GB2687339A GB535184A GB 535184 A GB535184 A GB 535184A GB 2687339 A GB2687339 A GB 2687339A GB 2687339 A GB2687339 A GB 2687339A GB 535184 A GB535184 A GB 535184A
Authority
GB
United Kingdom
Prior art keywords
envelope
electrodes
supports
carrying
electrode system
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
GB2687339A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB2687339A priority Critical patent/GB535184A/en
Publication of GB535184A publication Critical patent/GB535184A/en
Priority to ES175711A priority patent/ES175711A1/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
    • H01J19/52—Spacing members extending to the envelope without fixed connection between spacing member and 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
    • H01J2893/0009—Electrode system pressing against vessel wall

Landscapes

  • Inert Electrodes (AREA)

Abstract

535,184. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. and GOODCHILD, F. D. Sept. 29, 1939, No. 26873. [Class 39 (i)] The electrode system of a thermionic valve is carried on a support attached to one end of the envelope and carrying at the other end a guide resting on the envelope, the support being so arranged and constructed that its thermal expansion in operation is considerably less than that of the electrode system. The figure shows an arrangement of supporting rods 3 attached at one end to a collar 6 mounted on the stem 5 of the envelope and carrying at the other a mica disc 8 resting on the envelope. The supports are connected by lavite bridge 4 on which the electrodes are mounted. The supports are arranged at such a distance from the electrodes that they keep relatively cool, and may be made of metal with a low coefficient of expansion, preferably that known under the Registered Trade Mark " Invar," though nickel may suffice.
GB2687339A 1939-09-29 1939-09-29 Improvements in or relating to the construction of thermionic valves Expired GB535184A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2687339A GB535184A (en) 1939-09-29 1939-09-29 Improvements in or relating to the construction of thermionic valves
ES175711A ES175711A1 (en) 1939-09-29 1946-11-15 IMPROVEMENTS IN OR RELATED TO THE CONSTRUCTION OF ELECTRONIC DISCHARGE DEVICES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2687339A GB535184A (en) 1939-09-29 1939-09-29 Improvements in or relating to the construction of thermionic valves

Publications (1)

Publication Number Publication Date
GB535184A true GB535184A (en) 1941-04-01

Family

ID=10250553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2687339A Expired GB535184A (en) 1939-09-29 1939-09-29 Improvements in or relating to the construction of thermionic valves

Country Status (2)

Country Link
ES (1) ES175711A1 (en)
GB (1) GB535184A (en)

Also Published As

Publication number Publication date
ES175711A1 (en) 1946-12-16

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