Method of manufacturing electrodes

Abstract

An improved design and method and of manufacturing a luminous tube electrode comprises the steps of placing an electrode shell in an outer tube and allowing conductors connected to the electrode shell to emanate from an open end of the outer tube. A tubulation with a flared end is then butted up against the end of the outer tube, thereby sandwiching the conductors between the flared end of the tubulation and the outer tube. The flared end of the tubulation are then fused to one another forming a hermetic seal between each other and the conductors, resulting in the finished electrode. A further provision is made to blow a bubble in the tubulation.

I claim: 
     
       1. A method of manufacturing an electrode comprising the steps of: placing an electrode shell within an outer tube and on an electrode shell holder such that conductors connected to said electrode shell emanate freely from an end of said outer tube   placing a tubulation against an end of said outer tube thereby sandwiching said conductors between said outer tube and said tubulation; and   fusing said tubulation to said outer tube.   
     
     
       2. The method of claim 1 wherein said step of fusing comprises a step of rotating said outer tube and said tubulation while heat is applied at a junction thereof. 
     
     
       3. The method of claim 1 wherein said tubulation includes a flare at an end thereof. 
     
     
       4. The method of claim 3 further comprising the step of working said outer tube with respect to said tubulation. 
     
     
       5. The method of claim 4 wherein a plurality of said steps are performed while said outer tube is mounted on a rotary index. 
     
     
       6. The method of claim 3 further comprising the step of forming a bubble in a portion of said tubulation. 
     
     
       7. Apparatus for forming luminous tube electrodes comprising a mandrel for holding an electrode shell thereon;   means for supporting an outer tube to circumferentially surround the electrode shell while allowing the conductors to freely emanate from an end thereof;   means for butting a tubulation against an end of said outer tube;   means for fusing said tubulation to said outer tube.   
     
     
       8. Apparatus of claim 7 further comprising: a shaft connected to said mandrel;   means for rotating said shaft, thereby rotating said mandrel.   
     
     
       9. Apparatus of claim 1 further comprising: means for heating a portion of said tubulation; and   means for blowing a bubble in said tubulation.   
     
     
       10. Apparatus of claim 9 further comprising means for working said inner and outer tubulations. 
     
     
       11. A method of forming a luminous tube electrode comprising the steps of: placing an electrode shell within an outer tube and on an electrode shell bolder, said outer tube having an end;   placing an end of a tubulation against said end of said outer tube to form a junction; and   fusing said tubulation to said outer tube at said junction.   
     
     
       12. The method of claim 11 wherein said electrode includes at least two conductors attached thereto. 
     
     
       13. The method of claim 11 wherein said tubulation includes a flare proximate to the end thereof. .Iadd.14. A method of producing an electrode comprising the steps of: a) placing an outer tube proximate to a tubulation;   b) positioning an electrode shell within said outer tube;   c) merging said tubulation to said outer tube;   d) heating a predetermined length of said tubulation; and   e) injecting gas through said tubulation and outer tube to thereby cause a bubble to be formed in said tubulation. .Iaddend.