GB255098A - Improvements in valves for use in wireless telegraphy - Google Patents

Improvements in valves for use in wireless telegraphy

Info

Publication number
GB255098A
GB255098A GB17327/26A GB1732726A GB255098A GB 255098 A GB255098 A GB 255098A GB 17327/26 A GB17327/26 A GB 17327/26A GB 1732726 A GB1732726 A GB 1732726A GB 255098 A GB255098 A GB 255098A
Authority
GB
United Kingdom
Prior art keywords
wire
thoriated
current
coarse
valves
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
GB17327/26A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB255098A publication Critical patent/GB255098A/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

Landscapes

  • Solid Thermionic Cathode (AREA)

Abstract

255,098. Hawadier, J. A. M. July 10, 1925, [Convention date]. Vacuum tubes.-A cathode to be heated by alternating current comprises two filaments b, d arranged parallel to one another and connected in parallel but so that current at any moment flows in opposite directions in the two. They are made in such a way as to emit electrons at very low temperatures, and so as to show a reduced cooling effect in the interval between alternations of the current. Coarse thoriated wire is suitable; or a coarse wire of tungsten or molybdenum may be wound with a fine thorium or thoriated wire.
GB17327/26A 1925-07-10 1926-07-10 Improvements in valves for use in wireless telegraphy Expired GB255098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR255098X 1925-07-10

Publications (1)

Publication Number Publication Date
GB255098A true GB255098A (en) 1926-11-25

Family

ID=8884490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17327/26A Expired GB255098A (en) 1925-07-10 1926-07-10 Improvements in valves for use in wireless telegraphy

Country Status (2)

Country Link
US (1) US1967207A (en)
GB (1) GB255098A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9946199B1 (en) 2016-09-23 2018-04-17 Clover Technologies Group, Llc System and method of filling a toner container
US10162288B2 (en) 2016-09-23 2018-12-25 Clover Technologies Group, Llc System and method of remanufacturing a toner container

Also Published As

Publication number Publication date
US1967207A (en) 1934-07-17

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