GB698840A - Improvements in electric incandescent lamps and similar devices - Google Patents

Improvements in electric incandescent lamps and similar devices

Info

Publication number
GB698840A
GB698840A GB20506/51A GB2050651A GB698840A GB 698840 A GB698840 A GB 698840A GB 20506/51 A GB20506/51 A GB 20506/51A GB 2050651 A GB2050651 A GB 2050651A GB 698840 A GB698840 A GB 698840A
Authority
GB
United Kingdom
Prior art keywords
barium
similar devices
incandescent lamps
per cent
electric incandescent
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
GB20506/51A
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 Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB698840A publication Critical patent/GB698840A/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)
  • Discharge Lamp (AREA)

Abstract

698,840. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 30, 1951 [Sept. 9, 1950], No. 20506/51. Drawings to Specification. Class 39(i) [Also in Group XI] The leading-in or support wires for the filament of an evacuated device such as a thermionic valve, or a discharge or incandescent lamp, are formed, at least in part, of a composition of nickel and barium, the latter providing a continuous gettering action throughout the life of the device. Practical considerations set an upper limit of 0.05 per cent as the amount of barium in a barium-nickel alloy, but this proportion may be increased to 1 per cent by the additional presence of copper or chromium.
GB20506/51A 1950-09-09 1951-08-30 Improvements in electric incandescent lamps and similar devices Expired GB698840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US698840XA 1950-09-09 1950-09-09

Publications (1)

Publication Number Publication Date
GB698840A true GB698840A (en) 1953-10-21

Family

ID=22091796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20506/51A Expired GB698840A (en) 1950-09-09 1951-08-30 Improvements in electric incandescent lamps and similar devices

Country Status (1)

Country Link
GB (1) GB698840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138202A (en) * 1983-02-14 1984-10-17 Gen Electric Discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138202A (en) * 1983-02-14 1984-10-17 Gen Electric Discharge lamp

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