GB427664A - Improvements in or relating to electric discharge devices - Google Patents

Improvements in or relating to electric discharge devices

Info

Publication number
GB427664A
GB427664A GB168834A GB168834A GB427664A GB 427664 A GB427664 A GB 427664A GB 168834 A GB168834 A GB 168834A GB 168834 A GB168834 A GB 168834A GB 427664 A GB427664 A GB 427664A
Authority
GB
United Kingdom
Prior art keywords
tube
cathode
mica sheets
relating
manufactured
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
GB168834A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve 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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to GB168834A priority Critical patent/GB427664A/en
Priority to FR783691D priority patent/FR783691A/en
Publication of GB427664A publication Critical patent/GB427664A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Abstract

427,664. Discharge apparatus. M-O VALVE CO., Ltd., Electra House, Victoria Embankment, London, and SMITHELLS, C. J., c/o General Electric Co., Wembley, Middlesex. Jan. 17, 1934, No. 1688. [Class 39 (i)] [See also Group XXXVI] A shielded lead is manufactured by placing a metal rod or wire in a metal tube, packing the intervening space with insulating material and then reducing the whole by swaging, wiredrawing or the like. In one form, mica sheets 1 support an indirectlyheated cathode 2 and grid posts 4. One of the heater leads 6 is connected to a unit manufactured as above described and comprising a nickel rod 7 separated from an outer nickel tube 8 by alumina 9. The tube 8 is connected to the cathode 2 and cathode lead by a conductor 10, and is supported by the mica sheets 1. The external diameter of the tube 8 need not exceed 0À3 mm.
GB168834A 1934-01-17 1934-01-17 Improvements in or relating to electric discharge devices Expired GB427664A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB168834A GB427664A (en) 1934-01-17 1934-01-17 Improvements in or relating to electric discharge devices
FR783691D FR783691A (en) 1934-01-17 1935-01-05 Electric discharge lamp with sheathed conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB168834A GB427664A (en) 1934-01-17 1934-01-17 Improvements in or relating to electric discharge devices

Publications (1)

Publication Number Publication Date
GB427664A true GB427664A (en) 1935-04-29

Family

ID=9726279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB168834A Expired GB427664A (en) 1934-01-17 1934-01-17 Improvements in or relating to electric discharge devices

Country Status (2)

Country Link
FR (1) FR783691A (en)
GB (1) GB427664A (en)

Also Published As

Publication number Publication date
FR783691A (en) 1935-07-17

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