GB257604A - Vacuum tubes - Google Patents

Vacuum tubes

Info

Publication number
GB257604A
GB257604A GB20536/26A GB2053626A GB257604A GB 257604 A GB257604 A GB 257604A GB 20536/26 A GB20536/26 A GB 20536/26A GB 2053626 A GB2053626 A GB 2053626A GB 257604 A GB257604 A GB 257604A
Authority
GB
United Kingdom
Prior art keywords
magnesium
incandescence
bulb
vacuum
alloy
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
GB20536/26A
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 GB257604A publication Critical patent/GB257604A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
    • H01J7/183—Composition or manufacture of getters

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

257,604. Loewe, S. Aug. 25, 1925, [Convention date]. Vacuum tubes; R÷ntgen-ray tubes.-A vaporizable metal, such as magnesium, for absorbing gas, is present in the alloy of which part of the electrode system is constructed, in such small quantity that the deposit produced is not sufficient to impair the transparency of the bulb. Magnesium, with or without calcium, is preferably alloyed by heating sheet nickel, tungsten, tantalum or molybdenum to incandescence in a vacuum furnace, and exposing it to magnesium &c. vapour. Such an alloy gives off minute quan. tities of magnesium when heated in the bulb at incandescence and in a high vacuum. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of magnesium for improving the electron emission of a cathode. This subject-matter does not appear in the Specification as accepted.
GB20536/26A 1925-08-25 1926-08-20 Vacuum tubes Expired GB257604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE257604X 1925-08-25

Publications (1)

Publication Number Publication Date
GB257604A true GB257604A (en) 1927-05-12

Family

ID=5966519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20536/26A Expired GB257604A (en) 1925-08-25 1926-08-20 Vacuum tubes

Country Status (2)

Country Link
GB (1) GB257604A (en)
NL (1) NL25628C (en)

Also Published As

Publication number Publication date
NL25628C (en)

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