GB568452A - Improvements in or relating to the manufacture of electric vacuum tubes - Google Patents
Improvements in or relating to the manufacture of electric vacuum tubesInfo
- Publication number
- GB568452A GB568452A GB1568943A GB1568943A GB568452A GB 568452 A GB568452 A GB 568452A GB 1568943 A GB1568943 A GB 1568943A GB 1568943 A GB1568943 A GB 1568943A GB 568452 A GB568452 A GB 568452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stem
- press
- exhaust tube
- electric vacuum
- sealed
- 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
- 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
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
568,452. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd., and MOSCRIP, W. R. Sept. 24, 1943, No. 15689. [Class 39 (i)] A stem I of fusible material for an electric vacuum tube has a flat press 3 formed at one end and a coaxial exhaust tube 2 open at both ends, is sealed through the centre of the press and at least three conductors are sealed. through the stem. The press may have a number of radiating flat portions forming a star configuration. These may be formed by the pressure of a number of symmetrically arranged forming hammers, a core of carbon or non-expanding alloy being inserted in the exhaust tube to prevent it being closed by this pressure. The end of the stem bank may be preformed into triangular, square, or polygonal cross-section to facilitate this operation. In another method, a ball or roller of carbon or metal is rolled round in contact with the inner surface of the heated exhaust tube to seal it to the stem.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1568943A GB568452A (en) | 1943-09-24 | 1943-09-24 | Improvements in or relating to the manufacture of electric vacuum tubes |
| FR931019D FR931019A (en) | 1943-09-24 | 1946-06-07 | Improvements to the feet of electric vacuum tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1568943A GB568452A (en) | 1943-09-24 | 1943-09-24 | Improvements in or relating to the manufacture of electric vacuum tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB568452A true GB568452A (en) | 1945-04-05 |
Family
ID=10063663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1568943A Expired GB568452A (en) | 1943-09-24 | 1943-09-24 | Improvements in or relating to the manufacture of electric vacuum tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR931019A (en) |
| GB (1) | GB568452A (en) |
-
1943
- 1943-09-24 GB GB1568943A patent/GB568452A/en not_active Expired
-
1946
- 1946-06-07 FR FR931019D patent/FR931019A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR931019A (en) | 1948-02-11 |
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