GB671854A - Improvements in and relating to methods of fabricating sealed glass envelopes - Google Patents
Improvements in and relating to methods of fabricating sealed glass envelopesInfo
- Publication number
- GB671854A GB671854A GB32112/49A GB3211249A GB671854A GB 671854 A GB671854 A GB 671854A GB 32112/49 A GB32112/49 A GB 32112/49A GB 3211249 A GB3211249 A GB 3211249A GB 671854 A GB671854 A GB 671854A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- closure member
- strain
- glass
- relating
- 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
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
- H01J9/32—Sealing leading-in conductors
-
- 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
- H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
-
- 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
- H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
- H01J2893/0043—Glass-to-metal or quartz-to-metal, e.g. by soldering
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Package Closures (AREA)
- Closing Of Containers (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
671,854. Glass. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 14, 1949 [Dec. 24, 1948], No. 32112/49. Class 56. [Also in Group XL (a)] In the method of sealing a closure member to the glass envelope of an electric discharge device by induction heating of an interposed metal ring, residual compressive strain is introduced into the closure member during its manufacture, and disturbance of this strain by overheating is avoided by arranging the ring to have a line contact only with a beaded rim on the closure member. The residual strain is deliberately set up during the manufacture of the closure 11 by differential cooling; after it has been formed in a mould, one half of the mould is removed and an impinging jet of air 28 causes the outer surface of the glass 11 to cool more quickly than the inner surface which is still in contact with the other half 25 of the mould, so producing the desired condition of compressive strain.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US671854XA | 1948-12-24 | 1948-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB671854A true GB671854A (en) | 1952-05-14 |
Family
ID=22074269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32112/49A Expired GB671854A (en) | 1948-12-24 | 1949-12-14 | Improvements in and relating to methods of fabricating sealed glass envelopes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB671854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253616A2 (en) * | 2001-04-24 | 2002-10-30 | Osram-Sylvania Inc. | High pressure lamp bulb and method of induction sealing |
-
1949
- 1949-12-14 GB GB32112/49A patent/GB671854A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253616A2 (en) * | 2001-04-24 | 2002-10-30 | Osram-Sylvania Inc. | High pressure lamp bulb and method of induction sealing |
| EP1253616A3 (en) * | 2001-04-24 | 2005-12-21 | Osram-Sylvania Inc. | High pressure lamp bulb and method of induction sealing |
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