GB820446A - Improvements in or relating to the manufacture of electric incandescent lamps and similar devices - Google Patents
Improvements in or relating to the manufacture of electric incandescent lamps and similar devicesInfo
- Publication number
- GB820446A GB820446A GB6215/56A GB621556A GB820446A GB 820446 A GB820446 A GB 820446A GB 6215/56 A GB6215/56 A GB 6215/56A GB 621556 A GB621556 A GB 621556A GB 820446 A GB820446 A GB 820446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- gland
- flushing
- chamber
- envelope
- 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
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/22—Exhausting, degassing, filling, or cleaning vessels
- H01K3/24—Machines therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S53/00—Package making
- Y10S53/03—Sealing electron tubes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Cleaning In General (AREA)
Abstract
820,446. Making electric lamps and like devices. GENERAL ELECTRIC CO. Ltd. Feb. 28, 1957 [Feb. 28, 1956], No. 6215/56. Class 39(2) In order to expedite the flushing and/or gas filling of the envelope of an electric incandescent lamp or like device provided with only a single pumping stem or exhausting tube 4, the flushing gas is introduced into the envelope through a tube 28 which has an external diameter less than the internal diameter of the pumping stem 4, the tube 9 being inserted through the latter until its outlet orifice lies within the envelope, whereby the flushing gas together with any impurities flushed out by it is withdrawn through the space between the walls of the two tubes. The arrows within the lamp bulb, Fig. 2, indicate the inward and outward directions of the flushing gas. A vacuum pump may be connected to provide a continuous exhausting action. In the example the lower end of the pumping stem 4 of the lamp bulb 2 is located in known manner within an apertured rubber gland 5 at the upper end of a tubular chamber 6 which is provided with a similar gland tat its lower end, the tightening of a cap nut such as 10 on the respective glands acting to provide a hermetic seal between the end of the pumping stem 4 and the upper gland 5 and between a tube 26 and the lower gland. The tube 26, which is slidable through the lower gland is connected through a lateral tube at its lower end to a source of flushing gas, e.g. nitrogen or a mixture of argon and nitrogen and at its upper end is provided with a circular metal disc 27 with a small central hole into which the lower end of a metal flushing tube 28 is welded. The disc 27 preferably engages the inside wall of the chamber 6 with a sliding contact to guide the upward movement of the tube 26 in bringing the upper end of the tube 28 from a lower position wherein it is in the plane of the flange 7 of the chamber 6 to the position shown in Fig. 2. Perforations 27a in the disc 27 allow gas to pass freely along the outsides of the tubes 26, 28. In order that the tube 28 may extend through the pinch 31 of the lamp the pinch is made substantially V-shaped in section, Fig. 3. The chamber 8 has a metal side tube (not shown in Fig. 2) for connection to a vacuum pump.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL214962D NL214962A (en) | 1956-02-28 | ||
| NL105254D NL105254C (en) | 1956-02-28 | ||
| GB6215/56A GB820446A (en) | 1956-02-28 | 1956-02-28 | Improvements in or relating to the manufacture of electric incandescent lamps and similar devices |
| DEG21588A DE1088611B (en) | 1956-02-28 | 1957-02-25 | Method and device for flushing the bulb of an electric incandescent lamp or a similar object |
| US642741A US2935825A (en) | 1956-02-28 | 1957-02-27 | Manufacture of electric incandescent lamps and similar devices |
| FR1167327D FR1167327A (en) | 1956-02-28 | 1957-02-28 | Manufacture of incandescent lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6215/56A GB820446A (en) | 1956-02-28 | 1956-02-28 | Improvements in or relating to the manufacture of electric incandescent lamps and similar devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820446A true GB820446A (en) | 1959-09-23 |
Family
ID=9810510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6215/56A Expired GB820446A (en) | 1956-02-28 | 1956-02-28 | Improvements in or relating to the manufacture of electric incandescent lamps and similar devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2935825A (en) |
| DE (1) | DE1088611B (en) |
| FR (1) | FR1167327A (en) |
| GB (1) | GB820446A (en) |
| NL (2) | NL214962A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3028712A (en) * | 1959-06-01 | 1962-04-10 | Gen Electric | Apparatus for gas filling electric lamps |
| NL290353A (en) * | 1962-03-22 | |||
| FR1326443A (en) * | 1962-03-22 | 1963-05-10 | Lampes Elect Fab Reunies | Method and apparatus for filling an envelope with inert gas and active vapor at a relatively high pressure by simple introduction without pumping |
| DE1270174B (en) * | 1964-04-29 | 1968-06-12 | Patra Patent Treuhand | Method and device for venting and gas filling the vessel of electric lamps by flushing |
| JP5313444B2 (en) * | 2006-10-03 | 2013-10-09 | Ｎｅｃディスプレイソリューションズ株式会社 | Light source lamp cooling device and projection display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1406380A (en) * | 1920-04-12 | 1922-02-14 | Heath Wilfrid Paul | Process of and means for putting up powdered milk and other food products in a sterile atmosphere |
| NL19038C (en) * | 1926-04-14 | |||
| US1854471A (en) * | 1928-05-15 | 1932-04-19 | Owens Illinois Glass Co | Apparatus for producing hollow glassware |
| US2101092A (en) * | 1934-12-28 | 1937-12-07 | Gen Electric | Liquid contact switch |
| US2215100A (en) * | 1937-05-22 | 1940-09-17 | Westinghouse Electric & Mfg Co | Method and machine for sealing vitreous vessels |
| NL62424C (en) * | 1942-02-03 | |||
| US2722355A (en) * | 1951-07-31 | 1955-11-01 | Gen Electric | Method and apparatus for loading flash lamps |
| US2740570A (en) * | 1952-10-01 | 1956-04-03 | Gen Electric | Method and apparatus for exhausting and sealing-off lamp envelopes |
| US2759646A (en) * | 1955-03-31 | 1956-08-21 | Westinghouse Electric Corp | Method and apparatus for loading flash lamps |
-
0
- NL NL105254D patent/NL105254C/xx active
- NL NL214962D patent/NL214962A/xx unknown
-
1956
- 1956-02-28 GB GB6215/56A patent/GB820446A/en not_active Expired
-
1957
- 1957-02-25 DE DEG21588A patent/DE1088611B/en active Pending
- 1957-02-27 US US642741A patent/US2935825A/en not_active Expired - Lifetime
- 1957-02-28 FR FR1167327D patent/FR1167327A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL214962A (en) | |
| FR1167327A (en) | 1958-11-24 |
| US2935825A (en) | 1960-05-10 |
| DE1088611B (en) | 1960-09-08 |
| NL105254C (en) |
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