GB348848A - Improvements in gas-tight seals for electric conductors - Google Patents
Improvements in gas-tight seals for electric conductorsInfo
- Publication number
- GB348848A GB348848A GB12431/30A GB1243130A GB348848A GB 348848 A GB348848 A GB 348848A GB 12431/30 A GB12431/30 A GB 12431/30A GB 1243130 A GB1243130 A GB 1243130A GB 348848 A GB348848 A GB 348848A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- cap
- connector
- glass
- soldered
- 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
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/26—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
Landscapes
- Spark Plugs (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
348,848. Discharge apparatus ; leading-in insulators. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Schmidt, A. ; 1147, Parkwood Boulevard, Schenectady, New York, U.S.A.) April 22, 1930, No. 12431. Convention date, April 23, 1929. [Class 36.] Mercury arc rectifiers, hot cathode rectifiers, &c., are provided with a seal consisting of glass 9 cast between two cylindrical metal members 1, 3, the latter of which supports an electrode 7, but is spaced therefrom. The member 1 is made of a metal having a coefficient of expansion greater than that of the glass, such as machine steel, and is copper plated on the inside to provide a surface which is wetted by glass when hot. The member 3 is formed of chrome iron. A soapstone spacer and insulator 10 retains the electrode 7 in position. The electrode 7 may be screwed into a boss 5 integral with the cap 4 which is welded to the member 3, or the electrode and connector 8 may be butt welded to opposite sides of the cap 4. Fig. 3 shows a.modified form of connector 8b which is soldered to a cap 4b soldered to the member 3b. The electrode 7 screws into a plug 5b. In a further construction in which no connector is required directly outside the seal the electrode is simply butt welded to the closed end of the member 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US348848XA | 1929-04-23 | 1929-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB348848A true GB348848A (en) | 1931-05-21 |
Family
ID=21879205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12431/30A Expired GB348848A (en) | 1929-04-23 | 1930-04-22 | Improvements in gas-tight seals for electric conductors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB348848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750154C (en) * | 1935-03-15 | 1944-12-16 | Rca Corp | Device for cooling for partly glass and partly metal discharge tubes of higher performance |
-
1930
- 1930-04-22 GB GB12431/30A patent/GB348848A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750154C (en) * | 1935-03-15 | 1944-12-16 | Rca Corp | Device for cooling for partly glass and partly metal discharge tubes of higher performance |
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