GB389176A - Improvements relating to thermionic valves - Google Patents

Improvements relating to thermionic valves

Info

Publication number
GB389176A
GB389176A GB3075631A GB3075631A GB389176A GB 389176 A GB389176 A GB 389176A GB 3075631 A GB3075631 A GB 3075631A GB 3075631 A GB3075631 A GB 3075631A GB 389176 A GB389176 A GB 389176A
Authority
GB
United Kingdom
Prior art keywords
filament
spreader
branches
thermionic valves
grid
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
GB3075631A
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.)
OCTRON Ltd
Original Assignee
OCTRON 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 OCTRON Ltd filed Critical OCTRON Ltd
Priority to GB3075631A priority Critical patent/GB389176A/en
Publication of GB389176A publication Critical patent/GB389176A/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

  • Aerials With Secondary Devices (AREA)

Abstract

389,176. Thermionic valves. OCTRON, Ltd. and HOLT, W., Tyburn Road, Erding- ton, Birmingham. Nov. 6, 1931, No. 30756. [Class 39 (i).] The branches of a hairpin or like filament are maintained taut by a floating spreader of insulating material inserted be tween them so as to spread the branches apart and be supported by them, the arrangement being such that substantial clearance is left between the filament and grid supports and the spreader, which is thus perfectly free to move with the filament. As shown, the spreader consists of a mica plate 2 with V-shaped notches 3 receiving the branches 1 of the filament. The spreader is inserted between turns of the grid 4, and the edges are slightly spaced from the anode 5 ; vertical and lateral displacement are thus prevented.
GB3075631A 1931-11-06 1931-11-06 Improvements relating to thermionic valves Expired GB389176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3075631A GB389176A (en) 1931-11-06 1931-11-06 Improvements relating to thermionic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3075631A GB389176A (en) 1931-11-06 1931-11-06 Improvements relating to thermionic valves

Publications (1)

Publication Number Publication Date
GB389176A true GB389176A (en) 1933-03-16

Family

ID=10312639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3075631A Expired GB389176A (en) 1931-11-06 1931-11-06 Improvements relating to thermionic valves

Country Status (1)

Country Link
GB (1) GB389176A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570606A (en) * 1949-05-12 1951-10-09 Rca Corp Damper bar for filamentary cathodes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570606A (en) * 1949-05-12 1951-10-09 Rca Corp Damper bar for filamentary cathodes

Similar Documents

Publication Publication Date Title
GB389176A (en) Improvements relating to thermionic valves
GB417191A (en) Improvements in thermionic valves
GB251073A (en) Improvements in or relating to thermionic valves
GB442823A (en) Improvements in or relating to the mounting of electrode systems in electron tubes
GB323849A (en) Improvements in or relating to thermionic valves
GB461212A (en) Improvements in or relating to thermionic valves
CA288115A (en) Emitting electron cathode
GB401773A (en) Improvements in thermionic valves
GB362373A (en) Improvements in and relating to thermionic valves
CA313980A (en) Heater element electron emitting cathode
CA311906A (en) Electron emission material
CA290790A (en) Carbonized iron anode
AU449131A (en) Improvements in thermionic valves ofthe screened grid type
CA303818A (en) Electron emission material
GB491131A (en) Upper material for footwear
GB282150A (en) Improvements in or relating to thermionic valves
AU2132429A (en) Electron emission material
GB345949A (en) Improvements in or relating to electron discharge devices
GB602361A (en) Improvements in or relating to electric discharge tubes
CA313038A (en) Heater element for electron emitting cathodes
CA262127A (en) Electron emitting cathode
GB412327A (en) Improvements in and relating to thermionic valves
AU2132529A (en) Electron emission material
IE13268L (en) Screened grid valves
GB267198A (en) Improvements in or relating to wireless receiving apparatus