GB474706A - Improvements relating to glass-to-metal seals - Google Patents
Improvements relating to glass-to-metal sealsInfo
- Publication number
- GB474706A GB474706A GB32553/36A GB3255336A GB474706A GB 474706 A GB474706 A GB 474706A GB 32553/36 A GB32553/36 A GB 32553/36A GB 3255336 A GB3255336 A GB 3255336A GB 474706 A GB474706 A GB 474706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- glass
- members
- fuse
- vitreous
- 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
- H01J5/20—Seals between parts of vessels
- H01J5/22—Vacuum-tight joints between parts of vessel
- H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive 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
- H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
- H01J2893/0043—Glass-to-metal or quartz-to-metal, e.g. by soldering
Landscapes
- Joining Of Glass To Other Materials (AREA)
Abstract
474,706. Uniting metal to vitreous material by heat. STANDARD TELEPHONES & CABLES, Ltd. Nov. 27, 1936, No. 32553. Convention date, Feb. 4. [Class 36] A method of forming a glass to metal seal, in the manufacture of an envelope for an electron discharge comprises placing a metallic disc 14, Fig. 1, between a pair of hollow glass members 10, 12 having openings with edges opposite each other and in contact with the disc, and generating heat in the metallic disc by high frequency induction to fuse the glass members to it. The example shows an electron-discharge tube with an exhausting tube 11 sealed to the portion 10, and electrode supports or leading-in conductors 13 sealed in apertures in the end portion 12 prior to the sealing together of the members 10, 12, 14. In a modification, the disc 14, Fig. 3, is provided with integral sockets 18 to receive vitreous beads 19 fused to the rods or wires 13, the disc 14 then being seated upon the open end of the member 10 and an auxiliary or backing ring 20 of vitreous material seated upon the disc 14 with its lower edge in juxtaposition to the edge of the member 10. The disc 14 is subsequently heated by high frequency induction to fuse the members 10, 20 to the disc 14 and also fuse the beads 19 within the sockets 18. Alternatively the upper vitreous ring 20 may be dispensed with, the metal disc then preferably being of an alloy of iron, nickel, and cobalt having substantially the same coefficient of expansion as the glass which is fused thereto.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US474706XA | 1936-02-04 | 1936-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474706A true GB474706A (en) | 1937-11-05 |
Family
ID=21949175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32553/36A Expired GB474706A (en) | 1936-02-04 | 1936-11-27 | Improvements relating to glass-to-metal seals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB474706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996637A (en) * | 1953-02-26 | 1961-08-15 | Rca Corp | Electron tube construction |
-
1936
- 1936-11-27 GB GB32553/36A patent/GB474706A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996637A (en) * | 1953-02-26 | 1961-08-15 | Rca Corp | Electron tube construction |
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