Electric heating – Metal heating – Of cylinders
Patent
1976-11-02
1978-08-01
Goldberg, E. A.
Electric heating
Metal heating
Of cylinders
219 602, 21912511, B23K 902
Patent
active
041044991
ABSTRACT:
This invention relates to improved apparatus for arc welding an interior joint formed by intersecting tubular members. As an example, the invention is well suited for applications where many similar small-diameter vertical lines are to be welded to a long horizontal header. The improved apparatus includes an arc welding gun having a specially designed welding head which is not only very compact but also produces welds that are essentially free from rolled-over solidified metal. The welding head consists of the upper end of the barrel and a reversely extending electrode holder, or tip, which defines an acute angle with the barrel. As used in the above-mentioned example, the gun is positioned to extend upwardly through the vertical member and the joint to be welded, with its welding head disposed within the horizontal header. Depending on the design of the welding head, the barrel then is either rotated or revolved about the axis of the vertical member to cause the electrode to track the joint.
REFERENCES:
patent: 2868953 (1959-01-01), Gardner, Jr.
patent: 3784782 (1974-01-01), Lochen
patent: 4017709 (1977-04-01), Watanabe et al.
Luttrell Edward
Turner Paul W.
Carlson Dean E.
Goldberg E. A.
Hamel Stephen D.
Lewis Fred O.
The United States of America as represented by the United States
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