GB641807A - Improvements in and relating to metal vapour electric discharge devices - Google Patents

Improvements in and relating to metal vapour electric discharge devices

Info

Publication number
GB641807A
GB641807A GB1913747A GB1913747A GB641807A GB 641807 A GB641807 A GB 641807A GB 1913747 A GB1913747 A GB 1913747A GB 1913747 A GB1913747 A GB 1913747A GB 641807 A GB641807 A GB 641807A
Authority
GB
United Kingdom
Prior art keywords
mercury
relating
mercuric oxide
oxide
electric discharge
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
GB1913747A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1913747A priority Critical patent/GB641807A/en
Publication of GB641807A publication Critical patent/GB641807A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

641,807. Metal-vapour discharge apparatus. GENERAL ELECTRIC CO., Ltd., and CLACK, B. N. July 17, 1947, No. 19137. [Class 39 (i)] Mercury vapour is liberated in a discharge lamp by heating previously introduced mercuric oxide. The oxide does not decompose at the normal baking temperature of.about 400‹ C., but only at a subsequent stage of intense local heating to 800-1000‹ C. by eddy-currents or positive ion bombardment. The mercuric oxide may be enclosed in a metal box, or caused to adhere to an electrode or other support by a binder, such as potassium silicate or phosphoric acid. Specification 370,925 and U.S.A. Specification 1,855,901 are referred to. The Provisional Specification also refers to the liberation of mercury from compounds other than mercuric oxide, and the introduction of metals other than mercury, by the abovedescribed method.
GB1913747A 1947-07-17 1947-07-17 Improvements in and relating to metal vapour electric discharge devices Expired GB641807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1913747A GB641807A (en) 1947-07-17 1947-07-17 Improvements in and relating to metal vapour electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1913747A GB641807A (en) 1947-07-17 1947-07-17 Improvements in and relating to metal vapour electric discharge devices

Publications (1)

Publication Number Publication Date
GB641807A true GB641807A (en) 1950-08-23

Family

ID=10124356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1913747A Expired GB641807A (en) 1947-07-17 1947-07-17 Improvements in and relating to metal vapour electric discharge devices

Country Status (1)

Country Link
GB (1) GB641807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212536A1 (en) * 1971-03-15 1972-10-19 Duro Test Corp Fluorescent lamp and process for its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2212536A1 (en) * 1971-03-15 1972-10-19 Duro Test Corp Fluorescent lamp and process for its manufacture

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