GB265711A - Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves - Google Patents
Improvements in or relating to the manufacture of evacuated vessels such as thermionic valvesInfo
- Publication number
- GB265711A GB265711A GB2933025A GB2933025A GB265711A GB 265711 A GB265711 A GB 265711A GB 2933025 A GB2933025 A GB 2933025A GB 2933025 A GB2933025 A GB 2933025A GB 265711 A GB265711 A GB 265711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- thimble
- relating
- manufacture
- fused
- 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
- H01J9/40—Closing vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Joining Of Glass To Other Materials (AREA)
- Glass Compositions (AREA)
Abstract
265,711. General Electric Co., Ltd., and Duke, S. M. Nov. 20, 1925. Vacuum tubes.- A method of sealing off the wide vitreous exhaust tube of an evacuated vessel such as a thermionic valve, consists in inserting a support, such as a copper thimble, in the tube at the place at which the tube is to be sealed off, the tube being then fused and sealed close to the support. The vessel 1 is exhausted through the tube 2 by means of a pump connected at 3, and the thimble 6 is moved by a piece of iron 7 and a magnet, not shown, along the tube until the end rests against a constriction 8. The iron is withdrawn and the tube fused about the rounded end of the thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2933025A GB265711A (en) | 1925-11-20 | 1925-11-20 | Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2933025A GB265711A (en) | 1925-11-20 | 1925-11-20 | Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB265711A true GB265711A (en) | 1927-02-17 |
Family
ID=10289837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2933025A Expired GB265711A (en) | 1925-11-20 | 1925-11-20 | Improvements in or relating to the manufacture of evacuated vessels such as thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB265711A (en) |
-
1925
- 1925-11-20 GB GB2933025A patent/GB265711A/en not_active Expired
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