GB553746A - Improvements in or relating to glass seals - Google Patents
Improvements in or relating to glass sealsInfo
- Publication number
- GB553746A GB553746A GB15438/41A GB1543841A GB553746A GB 553746 A GB553746 A GB 553746A GB 15438/41 A GB15438/41 A GB 15438/41A GB 1543841 A GB1543841 A GB 1543841A GB 553746 A GB553746 A GB 553746A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- bulb
- chuck
- glass
- heated
- 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
- 239000011521 glass Substances 0.000 title abstract 6
- 238000007664 blowing Methods 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Classifications
-
- 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
- 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
- H01J2893/0039—Glass-to-glass connection, e.g. by soldering
Landscapes
- Joining Of Glass To Other Materials (AREA)
Abstract
553,746. Welding glass ; electric discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 1, 1941, No. 15438. Convention date, Nov. 30, 1940. [Class 56] [Also in Group XL] Relates to a method of sealing a glass disc across the open end of a glass envelope, particularly for sealing the bulb of a thermionic valve to a glass disc into which conductors are sealed. According to the invention, contiguous edges of the bulb and the disc are heated to a temperature at which they fuse together, the central part of the disc being cooled during the heating operation. In carrying out the method, the disc 3 is placed on a vertical chuck 5 which has wells n to receive the ends 4 of the conductors. A glass bulb 1 is placed over the electrode assembly, a separate overhead collet being provided if required to hold the bulb in correct position. The chuck is rotated and is heated by gas flames 8 in order to heat the disc 3 by radiation, but the disc may be heated before being placed on the chuck. Gas flames 7 are also directed against the rim of the bulb to fuse it to the edge of the disc, and at the same time the central area of the disc is cooled preferably by blowing air through a bore 9 in the chuck spindle. Alternatively, the disc may be cooled by contact with the centre of the chuck, or by blowing air through the lower ends of the wells n.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US553746XA | 1940-11-30 | 1940-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB553746A true GB553746A (en) | 1943-06-03 |
Family
ID=21997386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15438/41A Expired GB553746A (en) | 1940-11-30 | 1941-12-01 | Improvements in or relating to glass seals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB553746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643959A (en) * | 2020-04-27 | 2021-11-12 | 常熟林芝电子技术有限公司 | Processing method of glass bulb for improving illuminance of halogen lamp for vehicle |
-
1941
- 1941-12-01 GB GB15438/41A patent/GB553746A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643959A (en) * | 2020-04-27 | 2021-11-12 | 常熟林芝电子技术有限公司 | Processing method of glass bulb for improving illuminance of halogen lamp for vehicle |
| CN113643959B (en) * | 2020-04-27 | 2024-03-01 | 常熟林芝电子技术有限公司 | Method for processing glass bulb for improving illuminance of automotive halogen lamp |
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