GB681180A - Improvements in or relating to the manufacture of electric discharge devices - Google Patents

Improvements in or relating to the manufacture of electric discharge devices

Info

Publication number
GB681180A
GB681180A GB2522549A GB2522549A GB681180A GB 681180 A GB681180 A GB 681180A GB 2522549 A GB2522549 A GB 2522549A GB 2522549 A GB2522549 A GB 2522549A GB 681180 A GB681180 A GB 681180A
Authority
GB
United Kingdom
Prior art keywords
per cent
relating
manufacture
electric discharge
discharge devices
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
GB2522549A
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.)
JOHN OLIVER ISARD
General Electric Co PLC
Original Assignee
JOHN OLIVER ISARD
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 JOHN OLIVER ISARD, General Electric Co PLC filed Critical JOHN OLIVER ISARD
Priority to GB2522549A priority Critical patent/GB681180A/en
Publication of GB681180A publication Critical patent/GB681180A/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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
    • C03C23/007—Other surface treatment of glass not in the form of fibres or filaments by thermal treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

681,180. Glass composition. GENERAL ELECTRIC CO., Ltd., DOUGLAS, R. W., and ISARD, J. 0. Sept. 29, 1950 [Sept. 30, 1949; Nov. 28, 1949], Nos. 25225/49 and 30472/49. Class 56. [Also in Group XL (a)] The glass envelope of a fluorescent discharge lamp has the following composition by weight:- 70.1 per cent SiO 2 , 2.6 per cent Al 2 O 3 , 5.5 per cent CaO, 3.6 per cent MgO, 16.8 per cent Na 2 O, 0.4 per cent K 2 O, 0.8 per cent B 2 O 3 , 0.2 per cent SO 3 .
GB2522549A 1949-09-30 1949-09-30 Improvements in or relating to the manufacture of electric discharge devices Expired GB681180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2522549A GB681180A (en) 1949-09-30 1949-09-30 Improvements in or relating to the manufacture of electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2522549A GB681180A (en) 1949-09-30 1949-09-30 Improvements in or relating to the manufacture of electric discharge devices

Publications (1)

Publication Number Publication Date
GB681180A true GB681180A (en) 1952-10-22

Family

ID=10224231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2522549A Expired GB681180A (en) 1949-09-30 1949-09-30 Improvements in or relating to the manufacture of electric discharge devices

Country Status (1)

Country Link
GB (1) GB681180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971544C (en) * 1952-11-30 1959-02-12 Heraeus Schott Quarzschmelze Discharge vessel for gas discharge lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971544C (en) * 1952-11-30 1959-02-12 Heraeus Schott Quarzschmelze Discharge vessel for gas discharge lamps

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