GB518331A - Improvements in the manufacture of high-pressure metal-vapour electric discharge devices - Google Patents

Improvements in the manufacture of high-pressure metal-vapour electric discharge devices

Info

Publication number
GB518331A
GB518331A GB2624638A GB2624638A GB518331A GB 518331 A GB518331 A GB 518331A GB 2624638 A GB2624638 A GB 2624638A GB 2624638 A GB2624638 A GB 2624638A GB 518331 A GB518331 A GB 518331A
Authority
GB
United Kingdom
Prior art keywords
envelope
pressure metal
discharge devices
manufacture
around
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
GB2624638A
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 GB2624638A priority Critical patent/GB518331A/en
Priority to DE1939P0079726 priority patent/DE700565C/en
Publication of GB518331A publication Critical patent/GB518331A/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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/24—Vacuum-tight joints between parts of vessel between insulating parts of vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases
    • H01J2893/0038—Direct connection between two insulating elements, in particular via glass material
    • H01J2893/004—Quartz-to-quartz connection

Landscapes

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

Abstract

518,331. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and KETTLEWELL, E. Sept. 8, 1938, No. 26246. Drawings to Specification. [Class 39 (i)] The vitreous envelopes of high pressure metal vapour discharge devices are strengthened by applying molten vitreous material and allowing it to harden. The applied vitreous material may be the same as or different from the material of the envelope and in the latter case has a slightly higher temperature co-efficient of expansion than the material of which the envelope is mainly composed, and may be applied around the lead-in seals after they have been completed, or around the sealing-off pip either before or after sealing. The strengthening means may also be applied in the form of bands around the envelope, particularly if it is tubular.
GB2624638A 1938-09-08 1938-09-08 Improvements in the manufacture of high-pressure metal-vapour electric discharge devices Expired GB518331A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2624638A GB518331A (en) 1938-09-08 1938-09-08 Improvements in the manufacture of high-pressure metal-vapour electric discharge devices
DE1939P0079726 DE700565C (en) 1938-09-08 1939-09-09 Process for the production of electric high pressure discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2624638A GB518331A (en) 1938-09-08 1938-09-08 Improvements in the manufacture of high-pressure metal-vapour electric discharge devices

Publications (1)

Publication Number Publication Date
GB518331A true GB518331A (en) 1940-02-23

Family

ID=10240631

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2624638A Expired GB518331A (en) 1938-09-08 1938-09-08 Improvements in the manufacture of high-pressure metal-vapour electric discharge devices

Country Status (2)

Country Link
DE (1) DE700565C (en)
GB (1) GB518331A (en)

Also Published As

Publication number Publication date
DE700565C (en) 1940-12-23

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