GB439927A - Improvements in or relating to methods of sealing conductors into glass envelopes for radio tubes, incandescent lamps and the like - Google Patents
Improvements in or relating to methods of sealing conductors into glass envelopes for radio tubes, incandescent lamps and the likeInfo
- Publication number
- GB439927A GB439927A GB11758/35A GB1175835A GB439927A GB 439927 A GB439927 A GB 439927A GB 11758/35 A GB11758/35 A GB 11758/35A GB 1175835 A GB1175835 A GB 1175835A GB 439927 A GB439927 A GB 439927A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tubes
- tube
- wires
- leading
- exhaust
- 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
Abstract
439,927. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. April 16, 1935, No. 11758. Convention date, April 19, 1934. [Class 39 (i)] [See also Group XI] A method of making stems for tipless glass envelopes for thermionic valves &c. consists in assembling a stem-tube 14 with an exhausttube 15 closed at one end within it and leading- in wires 10 disposed between the tubes ; fusing together portions of the walls of the stem and exhaust-tubes to enclose portions of the leading-in wires, and delivering air-pressure into the exhaust tube to prevent the collapse of, and to blow an aperture through, the walls of the chamber 30 comprising the merged portions of the two tubes. The leading-in wires are supported in any desired spaced arrangement in openings in a block 12 upon which the tubes are also disposed ; flames are applied at 17, Fig. 3, and air-pressure is supplied to the tube 15 by a nozzle 18. The aperture 19 may be in the side or end walls of the chamber 30, its position being determined by the intensity of the heat applied to any portion thereof. Airpressure is also supplied at 19<1> to round out the joint 20<1>. The exhaust-tube may originally have an enlarged end 16, Fig. 1. Specification 147,293, [Class 39 (ii)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US721270A US2153404A (en) | 1934-04-19 | 1934-04-19 | Method of making stems for sealed electrical devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB439927A true GB439927A (en) | 1935-12-17 |
Family
ID=24897264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11758/35A Expired GB439927A (en) | 1934-04-19 | 1935-04-16 | Improvements in or relating to methods of sealing conductors into glass envelopes for radio tubes, incandescent lamps and the like |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2153404A (en) |
| DE (1) | DE732225C (en) |
| FR (1) | FR788922A (en) |
| GB (1) | GB439927A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH234242A (en) * | 1942-03-14 | 1944-09-15 | Philips Nv | Electric discharge tube. |
| GB563784A (en) * | 1943-02-24 | 1944-08-30 | Standard Telephones Cables Ltd | Improvements in or relating to the sealing of wires into glass |
-
1934
- 1934-04-19 US US721270A patent/US2153404A/en not_active Expired - Lifetime
-
1935
- 1935-04-16 DE DEA75820D patent/DE732225C/en not_active Expired
- 1935-04-16 GB GB11758/35A patent/GB439927A/en not_active Expired
- 1935-04-17 FR FR788922D patent/FR788922A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE732225C (en) | 1943-03-11 |
| US2153404A (en) | 1939-04-04 |
| FR788922A (en) | 1935-10-19 |
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