AT90359B - Graphite arc light electrode and process for its manufacture. - Google Patents

Graphite arc light electrode and process for its manufacture.

Info

Publication number
AT90359B
AT90359B AT90359DA AT90359B AT 90359 B AT90359 B AT 90359B AT 90359D A AT90359D A AT 90359DA AT 90359 B AT90359 B AT 90359B
Authority
AT
Austria
Prior art keywords
graphite
manufacture
arc light
light electrode
graphite arc
Prior art date
Application number
Other languages
German (de)
Original Assignee
Conradty Fa C
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 Conradty Fa C filed Critical Conradty Fa C
Application granted granted Critical
Publication of AT90359B publication Critical patent/AT90359B/en

Links

Landscapes

  • Discharge Lamp (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Bekannt sind Elektroden. insbesondere negative für Scheinwerfer, die teilweise und auch ganz aus Graphit bestehen. Die letzteren werden aus unreinem Kohlenmaterial hergestellt, das im elektrischen Ofen vollkommen in Graphit   übergeführt wird. Obwohl diese Art   Elektroden gegenüber den mit Graphitzusatz eine Verbesserung bedeuten, zeigen sie doch im hochbelasteten Scheinwerfer auch den Nachteil. dass der Graphit auf grössere Länge abzundert und eine unnatiirliche Spitze bildet. Eingehende Unter-   suchungen   haben den Beweis erbracht, dass diese   Erscheinung   mit der Struktur der Elektrode   zusammen-   hängt. Die aus unreinem   Kohlenmaterial     hergestellten   und nachträglich graphitierten Elektroden zeigen 
 EMI1.2 
 tung auszuüben. 



   Nach der vorliegenden   Erfindung wird kristallinischer Flockengraphit   so gepresst. dass seine Schuppen in der   Längsrichtung   des Stiftes liegen. Dies ist sowohl durch eine Einzelpressung, als auch in der Strangpresse möglich und muss die einzeln gepresste Elektrode nachher   il d   den bestimmten   Durehmesser abge-   
 EMI1.3 
 dieses Rohres liegen auf Kosten der auf diese senkrechten Dimensionen vergrössert werden. Die so   vo   rbereitete Graphitmasse wird sodann in die Strangpresse so eingelegt dass die verlängerte Dimension in die Richtung des aus der Strangpresse austretenden Stranges fällt. 



   Gegenüber den bekannten Elektroden, die im ganzen im elektrischen Ofen in Graphit übergeführt 
 EMI1.4 
 keinerlei Widerstand entgegensetzt: auch Einfluss auf den spezifischen Widerstand, der   bei läng. sgeschich-   teten Flockengraphitelektroden unter 4 liegt. ist   fesiztstellen.   



    PATENT-. SPRÜCHE-   
 EMI1.5 
 

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



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   Electrodes are known. especially negative for headlights that are partly or entirely made of graphite. The latter are made from impure carbon material that is completely converted into graphite in an electric furnace. Although this type of electrodes is an improvement over those with added graphite, they also have the disadvantage in highly stressed headlights. that the graphite scales over a greater length and forms an unnatural point. In-depth studies have shown that this phenomenon is related to the structure of the electrode. The electrodes made from impure carbon material and subsequently graphitized show
 EMI1.2
 exercise.



   According to the present invention, crystalline flake graphite is so pressed. that its scales lie in the longitudinal direction of the pen. This is possible both by means of a single pressing and in an extrusion press and the individually pressed electrode must then be measured by the specified diameter.
 EMI1.3
 of this pipe are at the expense of being enlarged to these perpendicular dimensions. The graphite mass prepared in this way is then placed in the extruder in such a way that the extended dimension falls in the direction of the strand emerging from the extruder.



   Compared to the known electrodes, which are converted into graphite in the electric furnace
 EMI1.4
 does not offer any resistance: also has an influence on the specific resistance, which at long. layered flake graphite electrodes is below 4. is fixed.



    PATENT-. CLAIMS-
 EMI1.5
 

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

 

Claims (1)

2. Verfahren zur Herstellung der Elektroden aus Graphit. insbesondere für Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, dass ein kohlenstoffhaltiges Bindemittel z. B. Teer oder dgl. ver- EMI1.6 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Process for making the electrodes from graphite. in particular for headlights according to claim 1, characterized in that a carbonaceous binder z. B. tar or the like. EMI1.6 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT90359D 1918-09-24 1919-06-13 Graphite arc light electrode and process for its manufacture. AT90359B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE27922X 1918-09-24

Publications (1)

Publication Number Publication Date
AT90359B true AT90359B (en) 1922-12-11

Family

ID=5621368

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90359D AT90359B (en) 1918-09-24 1919-06-13 Graphite arc light electrode and process for its manufacture.

Country Status (3)

Country Link
AT (1) AT90359B (en)
CH (1) CH87470A (en)
DK (1) DK27922C (en)

Also Published As

Publication number Publication date
CH87470A (en) 1920-12-01
DK27922C (en) 1921-07-04

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