GB448555A - Cathode and method of preparing the same - Google Patents

Cathode and method of preparing the same

Info

Publication number
GB448555A
GB448555A GB3227934A GB3227934A GB448555A GB 448555 A GB448555 A GB 448555A GB 3227934 A GB3227934 A GB 3227934A GB 3227934 A GB3227934 A GB 3227934A GB 448555 A GB448555 A GB 448555A
Authority
GB
United Kingdom
Prior art keywords
core
nickel
heated
barium
metal
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
GB3227934A
Other languages
English (en)
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.)
DONALD VEDANTUS EDWARDS
EARL KENNETH SMITH
Original Assignee
DONALD VEDANTUS EDWARDS
EARL KENNETH SMITH
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
Priority to NL48760D priority Critical patent/NL48760C/xx
Application filed by DONALD VEDANTUS EDWARDS, EARL KENNETH SMITH filed Critical DONALD VEDANTUS EDWARDS
Priority to GB3227934A priority patent/GB448555A/en
Publication of GB448555A publication Critical patent/GB448555A/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
    • 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)
  • Battery Electrode And Active Subsutance (AREA)
GB3227934A 1934-11-09 1934-11-09 Cathode and method of preparing the same Expired GB448555A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL48760D NL48760C (enrdf_load_stackoverflow) 1934-11-09
GB3227934A GB448555A (en) 1934-11-09 1934-11-09 Cathode and method of preparing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3227934A GB448555A (en) 1934-11-09 1934-11-09 Cathode and method of preparing the same

Publications (1)

Publication Number Publication Date
GB448555A true GB448555A (en) 1936-06-09

Family

ID=10336133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3227934A Expired GB448555A (en) 1934-11-09 1934-11-09 Cathode and method of preparing the same

Country Status (2)

Country Link
GB (1) GB448555A (enrdf_load_stackoverflow)
NL (1) NL48760C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL48760C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB448555A (en) Cathode and method of preparing the same
GB728181A (en) Secondary electron emitter
GB667319A (en) Improvements relating to the joining of refractory metal parts
US1909916A (en) Electron emitter and method of making same
GB496556A (en) Improvements in electrodes for electron discharge devices
US2209708A (en) Cathode manufacture
US1809229A (en) Electric discharge tube
GB613946A (en) Improvements in or relating to thermionic tubes having a secondary-emission electrode
GB642755A (en) Improvements in or relating to the manufacture of oxide cathodes for electric discharge tubes
US1721169A (en) Manufacture of oxide cathodes
SU56796A1 (ru) Способ изготовлени сердечника дл оксидных катодов
GB391750A (en) Improvements in and relating to thermionic cathodes
GB216840A (enrdf_load_stackoverflow)
GB729921A (en) Improvements in and relating to tungsten cathodes
GB317504A (en) Improvements in and relating to the manufacture of electric discharge devices
GB838099A (en) Improvements in or relating to indirectly heated incandescent cathodes
GB332695A (en) Improvements in cathodes for electric discharge tubes
GB423039A (en) Method of producing high-emission thermionic cathodes
GB356395A (en) Improvements relating to photo-electric cells
GB241304A (en) Improvements in the manufacture of coated metal filaments for use as electron emitting cathodes
GB401568A (en) Improvements in or relating to electrodes for electron discharge devices
GB405466A (enrdf_load_stackoverflow)
GB404169A (en) Thermionic cathode for electric discharge devices
GB413766A (en) Indirectly heated cathode
GB210654A (en) Process of coating particularly applicable to the coating of filamentary material, such as the filaments of vacuum tubes