GB455927A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB455927A GB455927A GB12806/35A GB1280635A GB455927A GB 455927 A GB455927 A GB 455927A GB 12806/35 A GB12806/35 A GB 12806/35A GB 1280635 A GB1280635 A GB 1280635A GB 455927 A GB455927 A GB 455927A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- neck
- bulb
- plates
- gun
- 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
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 240000007049 Juglans regia Species 0.000 abstract 1
- 235000009496 Juglans regia Nutrition 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 235000020234 walnut Nutrition 0.000 abstract 1
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
- H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
-
- 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
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Cold Cathode And The Manufacture (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
455,927. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Zworykin, V. K. ; 4800, Walnut Street, Philadelphia, U.S.A.) April 29, 1935, No. 12806. Convention date, April 28, 1934. [Class 39 (i)] The envelope consisting of a tubular neck 46 and an enlarged bulb 46<1> contains an electron gun in the neck 46 and a pair of deflecting plates 10, 12 supported at least partly from the gun, extending from the neck 46 into the bulb 46<1> and having a maximum separation greater than the diameter of the neck 46. The gun comprises a cathode 30, a control electrode 34 and an anode 36 all supported from a stem 28, an insulating ring 38 and a glass bead 42 being used in the anode mounting. The deflecting plates are formed into a unit comprising also an insulating collar 16, an apertured diaphragm 18 maintained at a positive potential with respect to the anode 36, and a ring electrode 58. Secondary electrons from the fluorescent screen 54 are intercepted by the ring 58 and by the sloping plates 10, 12 and silvering of the envelope is unnecessary. In manufacturing the tube, both ends of the envelope are originally open, the gun is introduced through the end of the neck 46, the stem 28 being sealed at 48 to the neck, and the deflecting unit is introduced through the open end of the bulb 46<1> so that the collar 16 slides over the anode 36, fluorescent end-disc 54 being finally sealed to the envelope. Leads 22a, 24a to the plates 10, 12 support the plates at their ends near the screen and leads 50, 64 are provided for the electrodes 18, 58. In modified methods of manufacture, the fluorescent coating is applied to the disc 54 through an aperture in the envelope after the disc is sealed to the bulb 46<1>, and the gun and deflecting plates are assembled to form a unit outside the envelope and are all introduced through the open end of the bulb 46<1>. Television tubes in which the ray is deflected electrostatically in one direction and electromagnetically in the other direction are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US722863A US2168892A (en) | 1934-04-28 | 1934-04-28 | Cathode ray device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB455927A true GB455927A (en) | 1936-10-29 |
Family
ID=24903721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12806/35A Expired GB455927A (en) | 1934-04-28 | 1935-04-29 | Improvements in or relating to cathode ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2168892A (en) |
| BE (2) | BE409165A (en) |
| DE (1) | DE679329C (en) |
| GB (1) | GB455927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE961642C (en) * | 1951-10-17 | 1957-04-11 | Electric & Musical Ind Ltd Hay | Electrode structure for electrical discharge tubes, especially for the beam generation system of a cathode ray tube |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2728009A (en) * | 1950-11-14 | 1955-12-20 | Rca Corp | Cathode-ray tube with target support |
| DE1265776B (en) * | 1965-12-16 | 1968-04-11 | Fernseh Gmbh | Process for the manufacture of Superorthikon tubes and tubes manufactured thereafter |
| US3575625A (en) * | 1968-04-13 | 1971-04-20 | Sony Corp | Color tube with convergence electrode mounting and connecting structure |
| GB1234513A (en) * | 1968-04-14 | 1971-06-03 | ||
| DE60314638T2 (en) * | 2003-11-14 | 2008-03-06 | The Procter & Gamble Company, Cincinnati | Polymeric compositions for sustained release of volatile materials |
| EP1655344A1 (en) * | 2004-11-05 | 2006-05-10 | The Procter & Gamble Company | Polymeric compositions for sustained release of volatile materials |
| EP1795556B1 (en) | 2005-12-07 | 2017-02-15 | The Procter and Gamble Company | Polymeric compositions for sustained release of volatile materials |
-
0
- BE BE410128D patent/BE410128A/xx unknown
- BE BE409165D patent/BE409165A/xx unknown
-
1934
- 1934-04-28 US US722863A patent/US2168892A/en not_active Expired - Lifetime
-
1935
- 1935-04-28 DE DER93202D patent/DE679329C/en not_active Expired
- 1935-04-29 GB GB12806/35A patent/GB455927A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE961642C (en) * | 1951-10-17 | 1957-04-11 | Electric & Musical Ind Ltd Hay | Electrode structure for electrical discharge tubes, especially for the beam generation system of a cathode ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| US2168892A (en) | 1939-08-08 |
| BE409165A (en) | |
| BE410128A (en) | |
| DE679329C (en) | 1939-08-03 |
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