AT31814B - Electric lamp with metal caps for power connection. - Google Patents

Electric lamp with metal caps for power connection.

Info

Publication number
AT31814B
AT31814B AT31814DA AT31814B AT 31814 B AT31814 B AT 31814B AT 31814D A AT31814D A AT 31814DA AT 31814 B AT31814 B AT 31814B
Authority
AT
Austria
Prior art keywords
power connection
electric lamp
metal caps
caps
glass
Prior art date
Application number
Other languages
German (de)
Original Assignee
Aeg
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 Aeg filed Critical Aeg
Application granted granted Critical
Publication of AT31814B publication Critical patent/AT31814B/en

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  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Elektrische Lampe mit zum Stromanschluss dienenden Metallkappen. 



   Bei elektrischen Glühlampen, Quecksilberlampen, Röntgenröhren u. dgl. stellte man die elektrischen   Anschlussstellen   bisher vielfach in der Weise her, dass man in die Glaswände Kappen aus Platin oder   dgl. einschmolz. Man verwendete   Platin aus dem Grunde. weil dasselbe ungefähr den gleichen Ausdehnungskoeffizienten wie Glas besitzt, so dass beim Erkalten des   geschmolzenen Glàses   die Gefahr des Zerspringens der   Gefässe   vermindert wird. Derartige Kappen aus Platin sind aber sehr teuer und genügen auch   häufig   nicht den gestellten   Ansprüchen   bei evakuierten Gefässen, da sich die Kappen nicht immer dicht an das Glas anlegen. 



   Aus diesem Grunde wird nach vorliegender Erfindung für die Anschlusskappen ein Metall verwendet, welches einen wesentlich grösseren Ausdehnungskoeffizienten als das Glas besitzt, beispielsweise Kupfer. Solche Kappen sind sehr billig und ausserdem äusserst vor-   teilhaft,   da sie beim Erkalten das Glas fest umschliessen und sogar unter einer gewissen Spannung stehen. 



   Die Herstellungsweise von   Anschlussstellen   mit Kappen ist z.   B.   folgende : 
 EMI1.1 
 beiden Teilo beim Erkalten fest miteinander verbunden sind, da sich die Metallkappe infolge ihres grösseren Ausdehnungskoeffizienten mit einer gewissen Spannung an den Glasansatz anlegt. 
 EMI1.2 
 zuüben, wodurch sich der Glasrohransatz an der Kante der Kappe etwas   verdlckt, um der   Spannung der Kappe   muhr   Widerstand bieten zu können. 

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



   <Desc / Clms Page number 1>
 



  Electric lamp with metal caps for power connection.



   With electric light bulbs, mercury lamps, X-ray tubes, etc. The like. Up until now, the electrical connection points were often produced in such a way that caps made of platinum or the like were melted into the glass walls. Platinum was used for this reason. because it has approximately the same coefficient of expansion as glass, so that when the molten glass cools down, the risk of the vessels cracking is reduced. However, such caps made of platinum are very expensive and often do not meet the requirements for evacuated vessels, since the caps do not always fit tightly to the glass.



   For this reason, according to the present invention, a metal is used for the connection caps which has a significantly greater coefficient of expansion than the glass, for example copper. Such caps are very cheap and also extremely advantageous because they tightly enclose the glass when it cools and are even under a certain tension.



   The production method of connection points with caps is z. B. the following:
 EMI1.1
 Both parts are firmly connected to each other when they cool, since the metal cap, due to its greater coefficient of expansion, rests against the glass attachment with a certain tension.
 EMI1.2
 to exercise, whereby the glass tube approach at the edge of the cap somewhat thickens in order to be able to offer resistance to the tension of the cap.

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

 

Claims (1)

PATENT-ANSPRUCH : Elektrische Lampe mit zum Stromanschluss dienenden Metallkappen. die m) t dem EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Electric lamp with metal caps for power connection. the m) t dem EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT31814D 1904-12-01 1906-11-17 Electric lamp with metal caps for power connection. AT31814B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE178473D 1904-12-01

Publications (1)

Publication Number Publication Date
AT31814B true AT31814B (en) 1908-02-10

Family

ID=5705806

Family Applications (1)

Application Number Title Priority Date Filing Date
AT31814D AT31814B (en) 1904-12-01 1906-11-17 Electric lamp with metal caps for power connection.

Country Status (1)

Country Link
AT (1) AT31814B (en)

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