GB485937A - Method for the sealing off of electric lamps - Google Patents
Method for the sealing off of electric lampsInfo
- Publication number
- GB485937A GB485937A GB3252036A GB3252036A GB485937A GB 485937 A GB485937 A GB 485937A GB 3252036 A GB3252036 A GB 3252036A GB 3252036 A GB3252036 A GB 3252036A GB 485937 A GB485937 A GB 485937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- lamp
- pressure
- bulb
- electric
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
485,937. Electric incandescent lamps with residual gases. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) Nov. 27, 1936, No. 32520. Drawings to Specification. [Class 39 (ii)] In a method of filling and sealing the envelope of an electric lamp containing a gas filling comprising a mixture of gases at a pressure substantially exceeding that of one atmosphere a part of the gas filling is introduced into the envelope and condensed by cooling the envelope, this temperature being maintained while another gas, which does not condense at that particular temperature, is introduced in a quantity which is insufficient to raise the pressure within the envelope to above one atmosphere, after which the bulb is sealed off. In an example the bulb of an electric incandescent lamp is connected to a system of tubes whereby it is connected first to an exhausting-pump and then to a container filled with krypton or xenon, or a mixture of those gases, at a predetermined pressure. The tap to the gas supply is then closed, and the lamp bulb cooled by immersion in a container filled with liquid air, which condenses the gas filling and reduces its pressure, whereupon the inlet tube is connected to a supply of nitrogen and finally sealed off in the usual manner by directing flames upon it. The lamp is then removed from the cooling-vessel and allowed to regain its normal temperature. Specification 473,863 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3252036A GB485937A (en) | 1936-11-27 | 1936-11-27 | Method for the sealing off of electric lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3252036A GB485937A (en) | 1936-11-27 | 1936-11-27 | Method for the sealing off of electric lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485937A true GB485937A (en) | 1938-05-27 |
Family
ID=10339865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3252036A Expired GB485937A (en) | 1936-11-27 | 1936-11-27 | Method for the sealing off of electric lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB485937A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1082674B (en) * | 1958-02-26 | 1960-06-02 | Egyesuelt Izzolampa | Process for the production of gas-filled glass vessels, in particular electric incandescent lamps, with a filling gas pressure exceeding the atmospheric pressure |
| DE1258514B (en) * | 1962-03-22 | 1968-01-11 | Lampes Elect Fab Reunies | Process for purging and filling electric lamps with a gas mixture |
| CN106051509A (en) * | 2016-05-31 | 2016-10-26 | 厦门蓝水电子有限公司 | Method for gas filling for LED filament bulb |
-
1936
- 1936-11-27 GB GB3252036A patent/GB485937A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1082674B (en) * | 1958-02-26 | 1960-06-02 | Egyesuelt Izzolampa | Process for the production of gas-filled glass vessels, in particular electric incandescent lamps, with a filling gas pressure exceeding the atmospheric pressure |
| DE1258514B (en) * | 1962-03-22 | 1968-01-11 | Lampes Elect Fab Reunies | Process for purging and filling electric lamps with a gas mixture |
| CN106051509A (en) * | 2016-05-31 | 2016-10-26 | 厦门蓝水电子有限公司 | Method for gas filling for LED filament bulb |
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