DE323902C - A membrane for telephones made of a non-magnetic base material and a magnetic coating - Google Patents
A membrane for telephones made of a non-magnetic base material and a magnetic coatingInfo
- Publication number
- DE323902C DE323902C DE1919323902D DE323902DD DE323902C DE 323902 C DE323902 C DE 323902C DE 1919323902 D DE1919323902 D DE 1919323902D DE 323902D D DE323902D D DE 323902DD DE 323902 C DE323902 C DE 323902C
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- base material
- coating
- membrane
- telephones
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Coating By Spraying Or Casting (AREA)
Description
Aus einem nicht magnetischen Grundstoff und magnetischem Überzug bestehende Membran für Telephone. Es ist zwar bekannt, Membranen für Telephone und andere durch wechselnd starken Magnetismus erregte Apparate aus einem nicht magnetischen Grundstoff herzustellen, der mit einem für magnetische Einwirkung geeigneten Überzug versehen wird. Jedoch haben die bisher angewendeten Verfahren wenig günstige Erfolge gehabt.Consists of a non-magnetic base material and a magnetic coating Membrane for telephones. While it is known to make membranes for telephones and others alternately strong magnetism excited devices made of a non-magnetic material to produce, which is provided with a coating suitable for magnetic action will. However, the methods used so far have had little favorable results.
So sind z. B. unmagnetische Membranen mit aufgeklebten Eisenplättchen armiert worden. Bei dieser Anordnung werden aber gerade die wertvollsten Schwingungspunkte der Membranen unwirksam, und ferner ist auf eine dauernde Verbindung zwischen Grundstoff und Eisenplatte nicht zu rechnen.So are z. B. non-magnetic membranes with glued iron plates been armored. With this arrangement, however, it is precisely the most valuable points of oscillation the membranes ineffective, and furthermore, there is a permanent bond between the basic material and iron plate not to be expected.
Auch der galvanoplastische Überzug von Membranen aus Glas oder Glimmer mit Eisen hat sich als nicht dauerhaft erwiesen.Also the galvanoplastic coating of membranes made of glass or mica with iron has not been shown to be permanent.
Das Neue und Vorteilhafte der Erfindung besteht nun darin, vermittels des Metallspritzverfahrens Membranen für Telephone und andere durch wechselnd starken Magnetismus erregte Apparate aus nicht magnetischem Grundstoff mit einem Eisen- oder Stahlüberzug zu versehen, wobei es eben gerade von Wichtigkeit ist, daß durch die feine Zerteilung und den starken Druck, womit das aufzuspritzende Metall aufgetragen wird, eine so innige und dauerhafte Verbindung desselben mit dem Grundstoff entsteht, wie sie bis jetzt durch keine andere Arbeitsweise erreicht werden konnte.The new and advantageous of the invention consists in mediating of the metal spraying process membranes for telephones and others by means of varying thicknesses Apparatus excited by magnetism made of a non-magnetic base material with an iron or steel coating, where it is just of importance that through the fine division and the strong pressure with which the metal to be sprayed on is applied becomes, such an intimate and permanent connection of the same with the basic material is created, as it could not be achieved by any other way of working until now.
Ferner ermöglicht das Metallspritzverfahren, Membranen- auch aus dünnen Häutchen, die gerade für eine gute telephonische Wiedergabe geeignet sind, mit einem festsitzenden Überzug von Eisen oder Stahl zu versehen.Furthermore, the metal spraying process enables membranes to be made from thin ones Skin, which is just suitable for a good telephone reproduction, with a to provide a fixed coating of iron or steel.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE323902T | 1919-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE323902C true DE323902C (en) | 1920-08-10 |
Family
ID=6176267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1919323902D Expired DE323902C (en) | 1919-02-23 | 1919-02-23 | A membrane for telephones made of a non-magnetic base material and a magnetic coating |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE323902C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE744286C (en) * | 1937-03-02 | 1944-01-13 | Siemens Ag | Membrane produced from pulp by dipping or pouring for electroacoustic devices |
-
1919
- 1919-02-23 DE DE1919323902D patent/DE323902C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE744286C (en) * | 1937-03-02 | 1944-01-13 | Siemens Ag | Membrane produced from pulp by dipping or pouring for electroacoustic devices |
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