GB219395A - Improvements in electric discharge lamps - Google Patents

Improvements in electric discharge lamps

Info

Publication number
GB219395A
GB219395A GB1120723A GB1120723A GB219395A GB 219395 A GB219395 A GB 219395A GB 1120723 A GB1120723 A GB 1120723A GB 1120723 A GB1120723 A GB 1120723A GB 219395 A GB219395 A GB 219395A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
electrodes
supported
gas
discharge lamps
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
GB1120723A
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.)
Edison Swan Electric Co Ltd
Original Assignee
Edison Swan Electric 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 Edison Swan Electric Co Ltd filed Critical Edison Swan Electric Co Ltd
Priority to GB1120723A priority Critical patent/GB219395A/en
Publication of GB219395A publication Critical patent/GB219395A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

219,395. Edison Swan Electric Co., Ltd., and Freedman, P. April 25, 1923. Vacuum tubes.-In a gasfilled discharge lamp of the kind in which the gas is purified by a substance 6, e.g. calcium or magnesium, supported on an additional electrode 5, a glass cup or sleeve 7 is provided for intercepting the deposit formed by the action of the purifying substance on the gas. The glass cup on which the deposit accumulates may be formed so as to act as a reflector. A plate of dielectric 11 may be supported between the electrodes 3, 4, and the luminosity of the discharge may be increased by coating the electrodes with thorium oxide.
GB1120723A 1923-04-25 1923-04-25 Improvements in electric discharge lamps Expired GB219395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1120723A GB219395A (en) 1923-04-25 1923-04-25 Improvements in electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1120723A GB219395A (en) 1923-04-25 1923-04-25 Improvements in electric discharge lamps

Publications (1)

Publication Number Publication Date
GB219395A true GB219395A (en) 1924-07-25

Family

ID=9981964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1120723A Expired GB219395A (en) 1923-04-25 1923-04-25 Improvements in electric discharge lamps

Country Status (1)

Country Link
GB (1) GB219395A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739389C (en) * 1936-01-26 1943-09-24 Siemens Ag Arrangement for the evaporation of a getter material from a tube to be heated from the outside and opening into the interior of a discharge vessel
US2518848A (en) * 1947-01-10 1950-08-15 Westinghouse Electric Corp Electrode support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739389C (en) * 1936-01-26 1943-09-24 Siemens Ag Arrangement for the evaporation of a getter material from a tube to be heated from the outside and opening into the interior of a discharge vessel
US2518848A (en) * 1947-01-10 1950-08-15 Westinghouse Electric Corp Electrode support

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