GB444775A - Improvements in and relating to cathode ray tubes - Google Patents
Improvements in and relating to cathode ray tubesInfo
- Publication number
- GB444775A GB444775A GB4627/35A GB462735A GB444775A GB 444775 A GB444775 A GB 444775A GB 4627/35 A GB4627/35 A GB 4627/35A GB 462735 A GB462735 A GB 462735A GB 444775 A GB444775 A GB 444775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- cathode
- plate
- anode
- tube
- 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
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/74—Deflecting by electric fields only
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Discharge Lamp (AREA)
Abstract
444,775. Cathode-ray tubes. BOSCH, F. J. G. VAN DEN, 14, Normans Buildings, Central Street, London. Feb. 13, 1935, No. 4627. [Class 39 (i)] The plates of each of two pairs of plates for deflecting the ray horizontally and vertically are coated on their adjacent faces with a substance readily emitting electrons when slightly heated, for example, potassium or strontium oxide, lime, barium oxide, calcium iodide, calcium fluoride or caesium. The plates 5 .. 8 may be parallel rectangles or may diverge outwardly away from the cathode as shown, each plate being a rectangle bent about a line 11 so that the plates are parallel for one-third of their axial length. The plate 7 is earthed and the plate 5, a second anode 4, a first anode 3, a cathode 1 and a Wehnelt cylinder 2 are maintained at increasing negative potentials. Operating details are specified and it is stated that electrons from the cathode strike the plates and heat them and produce a secondary emission from them greater than the electron current to them, and that a very small fluorescent spot is produced on the screen of the tube. The tube may contain rare gas such as argon, neon or helium or gas of low molecular weight such as hydrogen.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE412691D BE412691A (en) | 1935-02-13 | ||
| GB4627/35A GB444775A (en) | 1935-02-13 | 1935-02-13 | Improvements in and relating to cathode ray tubes |
| FR798992D FR798992A (en) | 1935-02-13 | 1935-12-10 | Cathodic oscillograph |
| US60371A US2062538A (en) | 1935-02-13 | 1936-01-23 | Cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4627/35A GB444775A (en) | 1935-02-13 | 1935-02-13 | Improvements in and relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB444775A true GB444775A (en) | 1936-03-27 |
Family
ID=9780727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4627/35A Expired GB444775A (en) | 1935-02-13 | 1935-02-13 | Improvements in and relating to cathode ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2062538A (en) |
| BE (1) | BE412691A (en) |
| FR (1) | FR798992A (en) |
| GB (1) | GB444775A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2530275A (en) * | 1946-03-16 | 1950-11-14 | Weingarten Joseph | Cathode-ray tube image control |
| US2455992A (en) * | 1947-01-25 | 1948-12-14 | Du Mont Allen B Lab Inc | Cathode-ray tube amusement device |
| US2709229A (en) * | 1950-06-01 | 1955-05-24 | Rca Corp | Radioactive monokinetic charged particle generators |
| US2922069A (en) * | 1958-07-15 | 1960-01-19 | Bell Telephone Labor Inc | High speed counting and switching tubes |
-
0
- BE BE412691D patent/BE412691A/xx unknown
-
1935
- 1935-02-13 GB GB4627/35A patent/GB444775A/en not_active Expired
- 1935-12-10 FR FR798992D patent/FR798992A/en not_active Expired
-
1936
- 1936-01-23 US US60371A patent/US2062538A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR798992A (en) | 1936-05-29 |
| US2062538A (en) | 1936-12-01 |
| BE412691A (en) |
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