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GB629126A - Improvements in and relating to cathodes for electric discharge devices - Google Patents

Improvements in and relating to cathodes for electric discharge devices

Info

Publication number
GB629126A
GB629126A GB9892/47A GB989247A GB629126A GB 629126 A GB629126 A GB 629126A GB 9892/47 A GB9892/47 A GB 9892/47A GB 989247 A GB989247 A GB 989247A GB 629126 A GB629126 A GB 629126A
Authority
GB
United Kingdom
Prior art keywords
tube
paste
conductor
mixture
cathodes
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
GB9892/47A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB9892/47A priority Critical patent/GB629126A/en
Priority to US6375A priority patent/US2619706A/en
Publication of GB629126A publication Critical patent/GB629126A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49881—Assembling or joining of separate helix [e.g., screw thread]

Landscapes

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

Abstract

629,126. Cathode materials and processing. BRITISH THOMSON-HOUSTON CO., Ltd., and VAUSE, A. S. April 14, 1947, No. 9892. [Class 39 (i)] A method of making a cathode consists in forming a mixture of chemicals, so chosen that when heated a reduction in volume occurs, forming a paste of the mixture and extruding the paste in the form of a tube, inserting a conductor into the tube and heating the assembly to cause the tube to shrink into close contact with the conductor. The mixture may consist of barium, strontium and calcium carbonates, with some pure silica formed into a paste with a solution of gum tragacanth in distilled water and acetone. The conductor 2, Fig. 2, may be coiled and may be used as the heater, or an additional heater 3 may be wound round the outside of the tube 1.
GB9892/47A 1947-04-14 1947-04-14 Improvements in and relating to cathodes for electric discharge devices Expired GB629126A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9892/47A GB629126A (en) 1947-04-14 1947-04-14 Improvements in and relating to cathodes for electric discharge devices
US6375A US2619706A (en) 1947-04-14 1948-02-05 Electrode for electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9892/47A GB629126A (en) 1947-04-14 1947-04-14 Improvements in and relating to cathodes for electric discharge devices

Publications (1)

Publication Number Publication Date
GB629126A true GB629126A (en) 1949-09-13

Family

ID=9880728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9892/47A Expired GB629126A (en) 1947-04-14 1947-04-14 Improvements in and relating to cathodes for electric discharge devices

Country Status (2)

Country Link
US (1) US2619706A (en)
GB (1) GB629126A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE525821A (en) * 1953-01-19
NL97850C (en) * 1953-08-14
US2845690A (en) * 1954-08-24 1958-08-05 Sylvania Electric Prod Electrical components and methods
US2879436A (en) * 1955-03-02 1959-03-24 Jr Wilson S Geisler Traveling wave tube and method of constructing the same
US2850666A (en) * 1955-12-01 1958-09-02 Hughes Aircraft Co Helix structure for traveling-wave tubes
US2875362A (en) * 1956-10-31 1959-02-24 Sylvania Electric Prod Beam collector
US2869217A (en) * 1957-02-14 1959-01-20 Sylvania Electric Prod Method for assembling travelling wave tubes
US3132409A (en) * 1959-12-22 1964-05-12 Westinghouse Electric Corp Process for assembling electrodes
NL262339A (en) * 1960-03-14
US3097324A (en) * 1960-05-02 1963-07-09 Varian Associates Cavity resonator structure for klystrons
US3219493A (en) * 1962-02-05 1965-11-23 Polaroid Corp Method of making electric lamps
BE632570A (en) * 1962-05-21
US3170081A (en) * 1962-06-05 1965-02-16 Westinghouse Electric Corp Discharge lamp electrode
US4611146A (en) * 1981-12-31 1986-09-09 Raytheon Company Indirectly heated cathode

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US786257A (en) * 1900-05-14 1905-04-04 George Westinghouse Electric heater and method of manufacturing same.
US1932077A (en) * 1930-02-15 1933-10-24 Westinghouse Electric & Mfg Co Space current device
US2007932A (en) * 1930-08-23 1935-07-09 Sirian Lamp Co Surge arrester
US2007926A (en) * 1930-10-21 1935-07-09 Sirian Lamp Co Light emitting unit
US2192753A (en) * 1933-06-26 1940-03-05 Hygrade Sylvania Corp Electron discharge device
US2175345A (en) * 1935-07-12 1939-10-10 Gen Electric Electric gaseous discharge device
US2275886A (en) * 1941-04-30 1942-03-10 Gen Electric Process of activating cathodes

Also Published As

Publication number Publication date
US2619706A (en) 1952-12-02

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