GB234916A - Improvements in or relating to thermionic valves - Google Patents
Improvements in or relating to thermionic valvesInfo
- Publication number
- GB234916A GB234916A GB610924A GB610924A GB234916A GB 234916 A GB234916 A GB 234916A GB 610924 A GB610924 A GB 610924A GB 610924 A GB610924 A GB 610924A GB 234916 A GB234916 A GB 234916A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- pin
- valve
- wound
- ring
- 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
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
Landscapes
- Feeding And Controlling Fuel (AREA)
Abstract
234,916. Bullimore, W. R. March 10, 1924. Wire resitances, cored. -A resistance with a cut-out is mounted or wound on the cap of a thermionic valve so as to enable the valve to replace one requiring a different current strength without any re-arrangement of the receiving set. As shown in Figs. 1 and 2 the resistance 1 is wound on an insulating bobbin 2 fitting over the valve contact pins 8, 10 whilst allowing of their insertion into sockets. The bobbin may be secured to cap by a screw 20. One end of the resistance is connected with a ring 4, and the other end with a leaf-spring 15. One filament lead 12 is connected with a ring 5 and the other 11 with the pin 10. When the bobbin is mounted in the position shown in Fig. 1, the rings 4, 5 are brought into engagement and the spring 15 engages with the pin 8, so that the resistance is connected in series with the filame.nt. When mounted in the reverse position, a flanged metallic socket 17a engages with the ring 5 and with the pin 8 so that the resistance is cut out. In the arrangement shown in Fig. 4 the resistance 30 is wound in a recess in the valve cap 23. One end of the resistance is connected with a contact pin 24 and the other with a block 32, which is also connected with a filament lead 41. In the position shown, a contact screw 37 is in engagement with the pin 24 and short-circuits the resistance. The screw may be removed so as to insert the resistance, and may be accommodated in a socket (not shown) in the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB610924A GB234916A (en) | 1924-03-10 | 1924-03-10 | Improvements in or relating to thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB610924A GB234916A (en) | 1924-03-10 | 1924-03-10 | Improvements in or relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB234916A true GB234916A (en) | 1925-06-10 |
Family
ID=9808535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB610924A Expired GB234916A (en) | 1924-03-10 | 1924-03-10 | Improvements in or relating to thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB234916A (en) |
-
1924
- 1924-03-10 GB GB610924A patent/GB234916A/en not_active Expired
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