GB412879A - Improvements in electric discharge tubes - Google Patents

Improvements in electric discharge tubes

Info

Publication number
GB412879A
GB412879A GB3141/34A GB314134A GB412879A GB 412879 A GB412879 A GB 412879A GB 3141/34 A GB3141/34 A GB 3141/34A GB 314134 A GB314134 A GB 314134A GB 412879 A GB412879 A GB 412879A
Authority
GB
United Kingdom
Prior art keywords
sodium
metal
electric discharge
cathode
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
GB3141/34A
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB412879A publication Critical patent/GB412879A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel

Landscapes

  • Discharge Lamp (AREA)

Abstract

412,879. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand- Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin.) Jan. 30, 1934, No. 3141. Convention date, March 10, 1933. [Class 39 (i).] A thermionic cathode 9 is mounted at one end of a discharge tube in a part 8 of less section than that enclosing the hollow metal anode 3. The filling is a metal vapour such as sodium and preferably also some rare gas. The hot end 8 prevents migration of the metal towards the cathode and this is also ensured by means of a small tube 5 sealed to the discharge tube projecting into the hollow anode and containing a supply of sodium.
GB3141/34A 1933-03-10 1934-01-30 Improvements in electric discharge tubes Expired GB412879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE412879X 1933-03-10

Publications (1)

Publication Number Publication Date
GB412879A true GB412879A (en) 1934-07-05

Family

ID=6439460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3141/34A Expired GB412879A (en) 1933-03-10 1934-01-30 Improvements in electric discharge tubes

Country Status (2)

Country Link
US (1) US1994306A (en)
GB (1) GB412879A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE479820A (en) * 1945-11-23
US2492619A (en) * 1948-01-02 1949-12-27 Sylvania Electric Prod Electrical discharge tube
GB2023923B (en) * 1978-05-22 1982-06-30 Commw Scient Ind Res Org Atomic spectral lamp

Also Published As

Publication number Publication date
US1994306A (en) 1935-03-12

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