AT21969B - Process for the production of sound boxes for speaking machines. - Google Patents

Process for the production of sound boxes for speaking machines.

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Publication number
AT21969B
AT21969B AT21969DA AT21969B AT 21969 B AT21969 B AT 21969B AT 21969D A AT21969D A AT 21969DA AT 21969 B AT21969 B AT 21969B
Authority
AT
Austria
Prior art keywords
production
sound boxes
membrane
speaking machines
electroplating
Prior art date
Application number
Other languages
German (de)
Inventor
Eduard Bergmann
Original Assignee
Eduard Bergmann
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eduard Bergmann filed Critical Eduard Bergmann
Application granted granted Critical
Publication of AT21969B publication Critical patent/AT21969B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Schalldosen für Sprechmaschinen. 



     Den Gegenstand df'r   vorliegenden Erfindung bildet ein Verfahren zur Herstellung von Schalldosen für   Grammophone etc.   mit einer auf galvanoplastisehem Wege hergestellten lotallmembran. Fig. I zeigt den Schnitt durch eine Schalldose mit ebener Membran, Fig. II den Schnitt und Fig.   IH   die Draufsicht auf eine Schalldose mit gewellter Membran. 



     Die auf galvanoplastischem Wege hergestellte Metallmembran a   ist mit dem Nadel- 
 EMI1.1 
   sowohl eben als auch gowellt hergestellt   werden. Letztere Art der Herstellung ist bei Schalldosen grösseren Formats geboten, um   l\1etallgeriiusche   der schwingenden Membran zu verhindern. Die Vorteile der   Sellalldosen   mit auf   galvanoplastischem Wege hergestellter   Metallmembran bestehen darin, dass die Membran, die auf   natürlichem   Wege mit der Schalldosenwand verbunden ist, infolge der stets gleichen, auf   natUrlichem Wege erreichten   Spannung die Töne viel reiner wiedergibt   als Schalldosen mit anderpn Membranen   und 
 EMI1.2 
 



  Ein grosser Vorteil ist ferner der, dass der Nadelarm b mit der Membran fix verbunden ist, somit jede Schwingung, die ihm durch die Berührung der Nadel c mit der Platte mitgeteilt wird, unmittelbar auf die Membran überträgt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of sound boxes for speaking machines.



     The subject matter of the present invention is a process for the production of sound boxes for gramophones etc. with a plumbing membrane produced by electroplating. FIG. I shows the section through a sound box with a flat membrane, FIG. II shows the section and FIG. 1H shows the top view of a sound box with a corrugated membrane.



     The metal membrane a produced by electroplating is connected to the needle
 EMI1.1
   can be produced both flat and corrugated. The latter type of production is necessary for larger-sized sound boxes in order to prevent metallic noise from the vibrating membrane. The advantages of Sellall cans with a metal membrane made by electroplating are that the membrane, which is naturally connected to the wall of the sound box, reproduces the tones much more purely than sound boxes with other membranes and due to the constant, naturally achieved tension
 EMI1.2
 



  Another great advantage is that the needle arm b is fixedly connected to the membrane, so that every vibration that is communicated to it by the contact of the needle c with the plate is transmitted directly to the membrane.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Schlldosen für Sprechmaschinen, dadurch gekennzeichnet, dass die Membran auf galvanoplastischem Wege hergestellt und mit dem Nadelarm sowie mit der Schalldosenwandung auf galvanoplastischem Wege fest verbunden wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of sockets for speaking machines, characterized in that the membrane is produced by electroplating and is firmly connected to the needle arm and the wall of the sound box by electroplating. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT21969D 1904-07-02 1904-07-02 Process for the production of sound boxes for speaking machines. AT21969B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT21969T 1904-07-02

Publications (1)

Publication Number Publication Date
AT21969B true AT21969B (en) 1905-11-10

Family

ID=3529776

Family Applications (1)

Application Number Title Priority Date Filing Date
AT21969D AT21969B (en) 1904-07-02 1904-07-02 Process for the production of sound boxes for speaking machines.

Country Status (1)

Country Link
AT (1) AT21969B (en)

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