GB208480A - Improved method and means for regulating the degree of vacuum in x-ray tubes - Google Patents

Improved method and means for regulating the degree of vacuum in x-ray tubes

Info

Publication number
GB208480A
GB208480A GB1417123A GB1417123A GB208480A GB 208480 A GB208480 A GB 208480A GB 1417123 A GB1417123 A GB 1417123A GB 1417123 A GB1417123 A GB 1417123A GB 208480 A GB208480 A GB 208480A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
vacuum
regulating
ntgen
degree
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
GB1417123A
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.)
BRITISH SCIENT INSTR RES ASS
Original Assignee
BRITISH SCIENT INSTR RES ASS
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
Priority claimed from GB918821A external-priority patent/GB182195A/en
Priority to NL21687A priority Critical patent/NL13406C/xx
Application filed by BRITISH SCIENT INSTR RES ASS filed Critical BRITISH SCIENT INSTR RES ASS
Priority to GB1417123A priority patent/GB208480A/en
Priority to DEB110090D priority patent/DE390858C/en
Priority to NL24682A priority patent/NL14734C/xx
Priority to FR27915D priority patent/FR27915E/en
Publication of GB208480A publication Critical patent/GB208480A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/20—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering

Landscapes

  • Physical Or Chemical Processes And Apparatus (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • X-Ray Techniques (AREA)

Abstract

208,480. Jackson, Sir H., Philpot, A. J., and British Scientific Instrument Research Association. May 29, 1923. Addition to 182,195. R÷ntgen-ray tubes.-In means for automatically regulating the vacuum in R÷ntgen-ray tubes as described in the parent Specification, iron nitride is used as the nitrogen-evolving medium and granular aluminium as the nitrogen-absorbing medium. The nitride may be prepared by heating an iron wire E to a dull red heat in ammonia; which may be carried out with the wire in position in a chamber D communicating with the tube A and before sealing. Aluminium granules M are placed in a tube N with a restricted orifice, and are covered by a plug O of glass wool to impede the absorbing action.
GB1417123A 1921-03-24 1923-05-29 Improved method and means for regulating the degree of vacuum in x-ray tubes Expired GB208480A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL21687A NL13406C (en) 1923-05-29 1922-03-21
GB1417123A GB208480A (en) 1921-03-24 1923-05-29 Improved method and means for regulating the degree of vacuum in x-ray tubes
DEB110090D DE390858C (en) 1921-03-24 1923-06-26 Device for changing the vacuum in X-ray tubes or other electrical discharge tubes
NL24682A NL14734C (en) 1923-05-29 1923-06-28
FR27915D FR27915E (en) 1921-03-24 1923-07-09 Improved method and apparatus for controlling the degree of vacuum of chi-ray tubes and other electric discharge tubes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB918821A GB182195A (en) 1921-03-24 1921-03-24 Improved method and means for regulating the degree of vacuum in x-ray tubes
GB1417123A GB208480A (en) 1921-03-24 1923-05-29 Improved method and means for regulating the degree of vacuum in x-ray tubes

Publications (1)

Publication Number Publication Date
GB208480A true GB208480A (en) 1923-12-20

Family

ID=40350264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1417123A Expired GB208480A (en) 1921-03-24 1923-05-29 Improved method and means for regulating the degree of vacuum in x-ray tubes

Country Status (3)

Country Link
DE (1) DE390858C (en)
FR (1) FR27915E (en)
GB (1) GB208480A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL193415A (en) * 1953-12-21

Also Published As

Publication number Publication date
DE390858C (en) 1924-02-23
FR27915E (en) 1924-09-27

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