GB645660A - Improvements in or relating to the manufacture of electric discharge devices - Google Patents
Improvements in or relating to the manufacture of electric discharge devicesInfo
- Publication number
- GB645660A GB645660A GB2654448A GB2654448A GB645660A GB 645660 A GB645660 A GB 645660A GB 2654448 A GB2654448 A GB 2654448A GB 2654448 A GB2654448 A GB 2654448A GB 645660 A GB645660 A GB 645660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leads
- glass
- mould
- block
- electrodes
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
645,660. Glass-to-metal seals. STANDARD TELEPHONES & CABLES, Ltd. Oct. 12, 1948, No. 26544. [Class 36] An electric discharge device in which electrodes 2, 3 are supported by leads 5, 6 which are sealed through the glass base of an envelope 1, is manufactured by inserting the leads in vertical holes in a mould 4 so that the electrodes are supported in the desired positions, placing a cylinder of glass on the mould so that it surrounds the electrodes and then heating the mould and the glass so that the glass flows across the top of the mould to form a base through which the leads are sealed. The mould 4 is made of a material such as carbon which does not fuse to glass, and is supported on an insulating block 7 which in turn rests on a metal block 8 having holes or grooves 9, 10, 11 for receiving the leads. If the block 8 is provided with holes these may have shoulders on which the lower ends of the leads rest, or if the block is grooved the leads are held in position by springs such as 12, 13. Glass collars such as 19 may be secured to one or more of the leads prior to their insertion into the mould. The whole assembly may be inserted in a bell jar 17 during the sealing process, an inert atmosphere being maintained within the jar. The heating may be effected by means of a high-frequency heating coil 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2654448A GB645660A (en) | 1948-10-12 | 1948-10-12 | Improvements in or relating to the manufacture of electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2654448A GB645660A (en) | 1948-10-12 | 1948-10-12 | Improvements in or relating to the manufacture of electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645660A true GB645660A (en) | 1950-11-08 |
Family
ID=10245301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2654448A Expired GB645660A (en) | 1948-10-12 | 1948-10-12 | Improvements in or relating to the manufacture of electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645660A (en) |
-
1948
- 1948-10-12 GB GB2654448A patent/GB645660A/en not_active Expired
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