GB186469A - Improvements relating to the renewal of the filaments of thermionic valves for use in wireless telegraphy or the like - Google Patents
Improvements relating to the renewal of the filaments of thermionic valves for use in wireless telegraphy or the likeInfo
- Publication number
- GB186469A GB186469A GB1958621A GB1958621A GB186469A GB 186469 A GB186469 A GB 186469A GB 1958621 A GB1958621 A GB 1958621A GB 1958621 A GB1958621 A GB 1958621A GB 186469 A GB186469 A GB 186469A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- tube
- bulb
- hook
- wires
- 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
- H01J9/50—Repairing or regenerating used or defective discharge tubes or lamps
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fixing For Electrophotography (AREA)
Abstract
186,469. Colebrooke, A. H. S., and Williams, W. A. July 21, 1921. Vacuum tubes.-The filament of a thermionic valve is renewed by forming an opening in the bulb, removing the old filament, placing the new filament in position .by means of a guidetube, through which the filament is threaded before or after insertion in the bulb, and securing the filament to the leading-in wires. An aperture 1 is formed in the bulb at the tip or elsewhere, and hooks 2, 2a on the leading-in wires 3, 3<a> are opened for removing the old filament. A short length of tube is passed through the aperture and the grid 4, the filament 7 being threaded through the tube, and secured by working one end around a hook 2<a> and pinching the hook on to the filament. 'The tube is then withdrawn, the wires 3, 3a bent back into position, and the other end of the filament secured to the other hook 2. In another arrangement, the filament is threaded through a bent tube 12, Fig. 5 before insertion in the bulb, and the tube may be used as a handle for winding the end of the filament on the hook. A similar method may be used when the axis of the electrodes lies along the axis of the bulb. The hooks may be snipped off to remove the old filament and new hooks formed, or the filament mav be secured to each wire by a short-tube or bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1958621A GB186469A (en) | 1921-07-21 | 1921-07-21 | Improvements relating to the renewal of the filaments of thermionic valves for use in wireless telegraphy or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1958621A GB186469A (en) | 1921-07-21 | 1921-07-21 | Improvements relating to the renewal of the filaments of thermionic valves for use in wireless telegraphy or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB186469A true GB186469A (en) | 1922-10-05 |
Family
ID=10131843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1958621A Expired GB186469A (en) | 1921-07-21 | 1921-07-21 | Improvements relating to the renewal of the filaments of thermionic valves for use in wireless telegraphy or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB186469A (en) |
-
1921
- 1921-07-21 GB GB1958621A patent/GB186469A/en not_active Expired
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