GB357113A - Improvements in and relating to methods of making cathodes for electron-discharge devices - Google Patents

Improvements in and relating to methods of making cathodes for electron-discharge devices

Info

Publication number
GB357113A
GB357113A GB8276/30A GB827630A GB357113A GB 357113 A GB357113 A GB 357113A GB 8276/30 A GB8276/30 A GB 8276/30A GB 827630 A GB827630 A GB 827630A GB 357113 A GB357113 A GB 357113A
Authority
GB
United Kingdom
Prior art keywords
march
electron
relating
methods
discharge devices
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
GB8276/30A
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB357113A publication Critical patent/GB357113A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

357,113. Thermionic cathodes. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) March 14, 1930, No. 8276. Convention date, March 14, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] An oxide-coated cathode is formed by heating barium nitrate &c. applied in solution to a core of tungsten or molybdenum wire. An organic solvent such as alcohol may be used, and a binder such as collodion, acetylcellulose or a resinous substance mav be mixed therewith. If the coating is reduced to the oxide before mounting in a valve, a protective coating of copper is applied.
GB8276/30A 1929-03-14 1930-03-14 Improvements in and relating to methods of making cathodes for electron-discharge devices Expired GB357113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE357113X 1929-03-14

Publications (1)

Publication Number Publication Date
GB357113A true GB357113A (en) 1931-09-14

Family

ID=6290484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8276/30A Expired GB357113A (en) 1929-03-14 1930-03-14 Improvements in and relating to methods of making cathodes for electron-discharge devices

Country Status (1)

Country Link
GB (1) GB357113A (en)

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