GB272549A - A process for the production of electronic discharge tubes, and tubes produced by such process - Google Patents

A process for the production of electronic discharge tubes, and tubes produced by such process

Info

Publication number
GB272549A
GB272549A GB15664/27A GB1566427A GB272549A GB 272549 A GB272549 A GB 272549A GB 15664/27 A GB15664/27 A GB 15664/27A GB 1566427 A GB1566427 A GB 1566427A GB 272549 A GB272549 A GB 272549A
Authority
GB
United Kingdom
Prior art keywords
tubes
dioxide
filament
production
electronic discharge
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
GB15664/27A
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
Publication of GB272549A publication Critical patent/GB272549A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

272,549. Rouge, E. June 14, 1926, [Convention date]. Vacuum tubes; R÷ntgen-ray tubes.-A cathode is formed by applying to a filament, fixed to its support, a coating of dioxide of barium or other alkaline earth metal, evacuating the bulb, at least partly and heating the filament, for instance to 1000‹-1200‹ C. to convert dioxide into monoxide, and evacuating the remaining gas. The filament may be of platinum or platinum-iridium. Finelydivided dioxide may be applied by projection to a filament heated to 450‹-600‹ C., or materials forming the dioxide may be used.
GB15664/27A 1926-06-14 1927-06-13 A process for the production of electronic discharge tubes, and tubes produced by such process Expired GB272549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE272549X 1926-06-14

Publications (1)

Publication Number Publication Date
GB272549A true GB272549A (en) 1927-12-08

Family

ID=3866922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15664/27A Expired GB272549A (en) 1926-06-14 1927-06-13 A process for the production of electronic discharge tubes, and tubes produced by such process

Country Status (4)

Country Link
BE (1) BE335031A (en)
DE (1) DE540760C (en)
FR (1) FR635925A (en)
GB (1) GB272549A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441438A (en) * 1964-07-03 1969-04-29 Int Standard Electric Corp Method to form hot cathodes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1014729A (en) * 1950-03-16 1952-08-20 Acec Improvements in the manufacture of electrodes for electric discharge tubes
BE526330A (en) * 1953-02-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441438A (en) * 1964-07-03 1969-04-29 Int Standard Electric Corp Method to form hot cathodes

Also Published As

Publication number Publication date
FR635925A (en) 1928-03-28
DE540760C (en) 1931-12-28
BE335031A (en)

Similar Documents

Publication Publication Date Title
GB272549A (en) A process for the production of electronic discharge tubes, and tubes produced by such process
FR602834A (en) Process and machine for the manufacture of incandescent lamps, electrode tubes and the like glass containers
GB433251A (en) Improvements in and relating to the production of porous heat and sound insulating substances
GB739550A (en) Improvements in or relating to a method of manufacturing cathode ray tubes
GB239349A (en) Improvements in the manufacture of magnesium-borosilicateglass
GB439243A (en) An improved method of evacuating vessels, more particularly lamp bulbs
GB210654A (en) Process of coating particularly applicable to the coating of filamentary material, such as the filaments of vacuum tubes
GB268986A (en) Improvements in or relating to electric incandescent lamps
AU1364523A (en) Process of producing drawn wire capable of high electron emissivity
SU58119A1 (en) The method of obtaining the spectral composition of the radiation of mercury and gas lamps
AU107504B2 (en) Process for the production of high filling gas pressures incandescent lamps and discharge lamps
ES168664A1 (en) PROCEDURE FOR THE MANUFACTURE OF AN INCANDESCENT ELECTRODE FOR ELECTRIC TUBES BY DISCHARGE THROUGH A GAS
GB522106A (en) Improvements in high-pressure metal-vapour electric discharge lamps
CA235417A (en) Method of making tipless incandescent lamps
AU112938A (en) Process for the production of high filling gas pressures incandescent lamps and discharge lamps
CA270595A (en) Process of producing carbon from natural gas
GB476385A (en) Process for the production of oxide cathodes by spraying
CA235615A (en) Manufacture of tipless incandescent lamps
GB424787A (en) Improvements in and relating to a process for manufacture of electric discharge devices
GB632632A (en) Improvements relating to the manufacture of titanium plated metal bodies
GB772244A (en) Improvements in or relating to the sealing of glass end walls to metal envelopes
CA228096A (en) Manufacture of tubes of cement asbestos
GB246336A (en) Improvements relating to thermionic tubes
AU107680B2 (en) Improved carbon blacks and lamp blacks and process of producing same
AU1006822A (en) Process and apparatus for making an alloy of lead withthe metals calcium, strontium, barium