Electric arc welding gun

Patent · Sun Jan 01 04:00:00 EST 1978

OSTI ID:863149

Luttrell, Edward ^[1]; Turner, Paul W ^[2]

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1. Clinton, TN
2. Idaho Falls, ID

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4104499
• OSTI ID: 863149
• Country of Publication: United States
• Language: English

Related Subjects

/219/
above-mentioned
acute
acute angle
angle
apparatus
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axis
barrel
compact
consists
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electric
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essentially
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example
extend
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extending
formed
free
gun
head
head disposed
header
holder
horizontal
improved
improved apparatus
interior
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metal
positioned
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relates
reversely
revolved
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rotated
similar
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specially
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suited
tip
track
tubular
upper
upwardly
vertical
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welded
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