AT28268B - Process for the production of metal filaments for electric light bulbs. - Google Patents

Process for the production of metal filaments for electric light bulbs.

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Publication number
AT28268B
AT28268B AT28268DA AT28268B AT 28268 B AT28268 B AT 28268B AT 28268D A AT28268D A AT 28268DA AT 28268 B AT28268 B AT 28268B
Authority
AT
Austria
Prior art keywords
production
electric light
light bulbs
metal filaments
carbon
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ver Electrizitaets Actien Ges
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 Ver Electrizitaets Actien Ges filed Critical Ver Electrizitaets Actien Ges
Priority to AT28268D priority Critical patent/AT28268B/en
Application granted granted Critical
Publication of AT28268B publication Critical patent/AT28268B/en

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  • Metal Extraction Processes (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von Metallglühfäden für elektrische Glühlampen. 



    Durch das Patent Nr. 2394S ist ein Yerfahren zur Herstellung von aus Wolfram oder Molybdän bzw. Legierungen dieser Metalle bestehenden Glühfäden geschützt, welches iarin gipfelt. dass dünne Kohlefaden mit einem Überzuge der genannten Metalle versehen werden, worauf der Glühfaden, der mithin aus einer Seele von Kohle und aus einer Hülle t'on Metall besteht, durch kurze Zeit unter dem Einflusse des elektrischen Stromes einer lohen Temperatur ausgesetzt wird, wobei die Kohle von dem sie umgebenden Metalle auf-   
 EMI1.1 
 aus Wolfram oder Molybdän oder Legierungen dieser Metalle im Sinne des obigen Verfahrens, jedoch mit dem Unterschiede, dass   man   an Stelle von Fäden aus reiner Kohle 
 EMI1.2 
 nach vorliegender Erfindung dienenden Kohlefäden darf als bekannt vorausgesetzt werden (siehe z. B. franz. Patent Nr. 347661). 



   Diese wolfram- bzw. molybdänhältigen Kohlefaden, die also aus einem Gemenge von Kohlo mit Wolfram bzw. mit   Molybdän oder mit beiden bestehen,   werden   nun   im Sinne des Stamm-Patentes mit Wolfram bzw. mit Molybdän (oder umgekehrt) überzogen und zu reinen Metallfäden weiter verarbeitet. 
 EMI1.3 
 Effekt, als Kohlefäden, die bereits Wolfram oder Molybdän oder beide enthalten, durch   Behandlung   nach dem Verfahren des Stamm-Patentes, d. h. Überziehen derselben mit 
 EMI1.4 
   glatteren   Arbeiten ermöglichen, weil sowohl die Lösung bzw. die Aufnahme der Kohle durch das Metall als auch die   Entkohiung   wesentlich beschleunigt wird, was darauf zurückgeführt 
 EMI1.5 
 

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



   <Desc / Clms Page number 1>
 



  Process for the production of metal filaments for electric light bulbs.



    Patent No. 2394S protects a process for the production of filaments consisting of tungsten or molybdenum or alloys of these metals, which culminates in it. that thin carbon filaments are provided with a coating of the metals mentioned, whereupon the filament, which consequently consists of a core of carbon and a sheath of metal, is exposed to a low temperature for a short time under the influence of the electric current, whereby the Carbon from the surrounding metals
 EMI1.1
 made of tungsten or molybdenum or alloys of these metals in the sense of the above process, but with the difference that instead of threads made of pure carbon
 EMI1.2
 Carbon threads serving according to the present invention may be assumed to be known (see e.g. French patent no. 347661).



   These tungsten or molybdenum-containing carbon threads, which consist of a mixture of carbon with tungsten or with molybdenum or with both, are now coated with tungsten or with molybdenum (or vice versa) and turned into pure metal threads processed.
 EMI1.3
 Effect, as carbon filaments, which already contain tungsten or molybdenum or both, by treatment according to the method of the Stamm patent, d. H. Covering the same with
 EMI1.4
   Allow smoother work, because both the dissolution or the uptake of the coal by the metal and the decarbonization is significantly accelerated, which is attributed to it
 EMI1.5
 

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

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT28268D 1905-03-27 1905-11-11 Process for the production of metal filaments for electric light bulbs. AT28268B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT28268D AT28268B (en) 1905-03-27 1905-11-11 Process for the production of metal filaments for electric light bulbs.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT23948T 1905-03-27
AT28268D AT28268B (en) 1905-03-27 1905-11-11 Process for the production of metal filaments for electric light bulbs.

Publications (1)

Publication Number Publication Date
AT28268B true AT28268B (en) 1907-04-25

Family

ID=25598359

Family Applications (1)

Application Number Title Priority Date Filing Date
AT28268D AT28268B (en) 1905-03-27 1905-11-11 Process for the production of metal filaments for electric light bulbs.

Country Status (1)

Country Link
AT (1) AT28268B (en)

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