GB521813A - Improvements relating to electron discharge devices - Google Patents

Improvements relating to electron discharge devices

Info

Publication number
GB521813A
GB521813A GB3435338A GB3435338A GB521813A GB 521813 A GB521813 A GB 521813A GB 3435338 A GB3435338 A GB 3435338A GB 3435338 A GB3435338 A GB 3435338A GB 521813 A GB521813 A GB 521813A
Authority
GB
United Kingdom
Prior art keywords
flanges
insulator
spring
metal
welded
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
GB3435338A
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.)
THOMAS CHARLES BLACK
STC PLC
Original Assignee
THOMAS CHARLES BLACK
Standard Telephone and Cables 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 THOMAS CHARLES BLACK, Standard Telephone and Cables PLC filed Critical THOMAS CHARLES BLACK
Priority to GB3435338A priority Critical patent/GB521813A/en
Publication of GB521813A publication Critical patent/GB521813A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

521,813. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., and BLACK, T. C. Nov. 25, 1938, No. 34353. [Class 39 (i)] The filamentary cathode of an electron discharge device is kept in tension by means of a cantilever spring attached to a metal arm extending from a point on the electrode spacing insulator adjacent to the free end of the cantilever spring. In the form shown, the filament is carried on a hook K secured to a cantilever plate spring P. This spring is connected to a bent metal arm M which is itself connected to a disc Q on a bush or rivet L fixed in a central aperture in the insulator F. The cylindrical anode A is constructed in two channel sections each with flanges B and grooves D at the edges to take rods E. The insulator F of lavite or similar material rests on the ends of the flanges B and carries collars G which may be welded to the rods E. Four metal struts C have a V-section and are flattened where they are welded to the flanges B. The struts diverge below the anode and are secured to a metal band clamped round the stem in the usual manner.
GB3435338A 1938-11-25 1938-11-25 Improvements relating to electron discharge devices Expired GB521813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3435338A GB521813A (en) 1938-11-25 1938-11-25 Improvements relating to electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3435338A GB521813A (en) 1938-11-25 1938-11-25 Improvements relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB521813A true GB521813A (en) 1940-05-31

Family

ID=10364589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3435338A Expired GB521813A (en) 1938-11-25 1938-11-25 Improvements relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB521813A (en)

Similar Documents

Publication Publication Date Title
US2489850A (en) Support for the electrodes of electron discharge devices
GB521813A (en) Improvements relating to electron discharge devices
US2533750A (en) High-gain amplifier tube
US2468136A (en) Focusing electrode
US2612618A (en) Electronic discharge tube control
US2444082A (en) Flexible electrode support for electron discharge devices
US2303277A (en) Antimicrophonic filament
US2042554A (en) Thermionic tube
US2043659A (en) Electron discharge device
GB491685A (en) Improvements in or relating to electron discharge devices
US1731282A (en) Mount for electron devices
US3011084A (en) Electron discharge devices
GB418238A (en) Improvements in thermionic valves
US2421161A (en) Grid structure for electron discharge tubes
GB378408A (en) Electrode assembly for electron discharge devices
GB361170A (en) Improvements in or relating to electric discharge tubes
GB515125A (en) Improvements in supporting and tensioning arrangements for thermionic filament cathodes
GB907893A (en) Improvements in electron tubes
GB439792A (en) Grid electrode for electron tubes
GB862024A (en) Electric discharge device
GB547979A (en) Magnetic control vacuum tubes
GB810399A (en) Improvements in electron tubes
GB366590A (en) Improvements in or relating to vacuum tubes
GB477787A (en) Electric discharge tube
GB204317A (en) Improvements in or relating to electron discharge devices