DE444744C - Process for the production of a metallic protective screen inside an electrical discharge vessel - Google Patents
Process for the production of a metallic protective screen inside an electrical discharge vesselInfo
- Publication number
- DE444744C DE444744C DEH76639D DEH0076639D DE444744C DE 444744 C DE444744 C DE 444744C DE H76639 D DEH76639 D DE H76639D DE H0076639 D DEH0076639 D DE H0076639D DE 444744 C DE444744 C DE 444744C
- Authority
- DE
- Germany
- Prior art keywords
- production
- discharge vessel
- electrical discharge
- protective screen
- metallic protective
- 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
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
4M7444M744
Die Erfindung· betrifft ein Verfahren zur Herstellung eines metallischen Schutzschirmes im Innern eines elektrischen Entladungsgefäßes durch Niederschlagen eines Metalles auf die Glaswand und besteht darin, daß Niederschlag -und gegebenenfalls Glaswand während der Herstellung des Niederschlages entgast werden.The invention relates to a method for producing a metallic protective screen inside an electrical discharge vessel by depositing a metal on the glass wall and consists in that precipitation -and optionally glass wall be degassed during the preparation of the precipitate.
Schutzschirme für elektrische Entladungsgefäße aller Art sind hinreichend bekannt. Neu ist jedoch die Art, in der der Schutzschirm hergestellt wird, nämlich unter gleichzeitiger Entgasung.Protective screens for electrical discharge vessels of all types are well known. What is new, however, is the way in which the protective screen is produced, namely at the same time Degasing.
Die AbbEdungen zeigen zwei Anwendungsbeispiele der Erfindung.The figures show two examples of application of the invention.
In Abb. ι ist ein Entladungsgefäß mit der Kathode &, Anode # und mit einem Steuergitter g schematisch dargestellt. Die Glaswandungen w des Gefäßes sind im Innern mitIn Fig. Ι a discharge vessel with the cathode &, anode # and with a control grid g is shown schematically. The glass walls w of the vessel are inside with
so einem MetaHbelag m versehen, der etwa auf chemischem Wege oder nach einem beliebigen Metaffi'siexungsverfahren aufgebracht ist. Die Metallisierung kann unter gleichzeitigem Elektronenbombardement stattfinden, so daß hierbei die Glaswandung entgast wird. Wird dann der Belag an ein negatives Potential gelegt, so verhindert er eine statische Aufladung der Glaswand durch die Elektronen. In Abb. 2 ist ein Entladungsgef äß e dargestellt mit einer Kathode ks Steuergittern g, Anode α und einem Metallschirm m, welcher die Elektroden und die Strombahn der Elektronen umgibt. Hierbei ist auch der Metallschirm auf einem besonderen Träger gelagert und von der Glaswand durch einen Zwischenraum getrennt. Diese Metallkappe muß nach irgendeinem Verfahren entgast werden. Insbesondere kann die Entgasung dadurch vorgenommen werden, daß die Metallkappe durch Einschnitte unterteilt wird, 4<> so daß sie einen Widerstandskörper geringen Querschnitts bildet und unmittelbar durch Stromwärme ausgeglüht und damit entgast werden kann.so provided with a MetaHbelag m , which is applied by chemical means or by any metaffinity process. The metallization can take place with simultaneous electron bombardment, so that the glass wall is degassed in the process. If the coating is then placed at a negative potential, it prevents the glass wall from being statically charged by the electrons. In Fig. 2, a discharge vessel e is shown with a cathode k s control grid g, anode α and a metal screen m, which surrounds the electrodes and the current path of the electrons. The metal screen is also mounted on a special support and separated from the glass wall by a gap. This metal cap must be degassed by some method. In particular, the degassing can be carried out in that the metal cap is divided by incisions, 4 <> so that it forms a resistance body of small cross section and can be annealed directly by current heat and thus degassed.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH76639D DE444744C (en) | Process for the production of a metallic protective screen inside an electrical discharge vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH76639D DE444744C (en) | Process for the production of a metallic protective screen inside an electrical discharge vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE444744C true DE444744C (en) | 1927-05-24 |
Family
ID=7163427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEH76639D Expired DE444744C (en) | Process for the production of a metallic protective screen inside an electrical discharge vessel |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE444744C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019768B (en) * | 1954-03-09 | 1957-11-21 | Siemens Ag | Process for the production of vapor-deposited metal coatings for electrical discharge vessels |
-
0
- DE DEH76639D patent/DE444744C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1019768B (en) * | 1954-03-09 | 1957-11-21 | Siemens Ag | Process for the production of vapor-deposited metal coatings for electrical discharge vessels |
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