GB194595A - Improvements in or connected with the manufacture of thermionic valves and the like - Google Patents
Improvements in or connected with the manufacture of thermionic valves and the likeInfo
- Publication number
- GB194595A GB194595A GB1418222A GB1418222A GB194595A GB 194595 A GB194595 A GB 194595A GB 1418222 A GB1418222 A GB 1418222A GB 1418222 A GB1418222 A GB 1418222A GB 194595 A GB194595 A GB 194595A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuse
- grid
- current
- bulb
- filament
- 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
- H01J9/385—Exhausting vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
194,595. Frost, S. G. May 19, 1922. Vacuum tubes. - A fusible element is connected inside the bulb of a thermionic valve or vacuum tube between one or more electrodes or an internal member and an external circuit so that the electrodes or other part may be heated by passage of current during exhaustion of the bulb, the fuse being afterwards ,blown by increasing the current. The internal member may be a metallic or other support, or an insulator associated with a conductor. The fuse 6 may be connected by spot-welding or pinching between an anode 2 and a grid 1 each of which has a single lead 4, 3 respectively; or the fuse may be connected between a separate conductor and an electrode. The filament may be mounted on a grooved insulating sleeve 8 on a cross-wire 9 - secured to the grid which maintains the filament in tension, the sleeve, being heated during exhaustion by current passed through the grid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1418222A GB194595A (en) | 1922-05-19 | 1922-05-19 | Improvements in or connected with the manufacture of thermionic valves and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1418222A GB194595A (en) | 1922-05-19 | 1922-05-19 | Improvements in or connected with the manufacture of thermionic valves and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB194595A true GB194595A (en) | 1923-03-15 |
Family
ID=10036482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1418222A Expired GB194595A (en) | 1922-05-19 | 1922-05-19 | Improvements in or connected with the manufacture of thermionic valves and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB194595A (en) |
-
1922
- 1922-05-19 GB GB1418222A patent/GB194595A/en not_active Expired
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