Loading patent…
AssigneeMidcon Pipeline Equipment Co.
InventorsClyde M. Slavens, Edward A. Clavin, James E. Alleman, Henry T. Ray, Edgar H. Douglas
Estimating the term…
Pipe welding clamp apparatus, including a pair of clamp assemblies, one being of conventional design and the other being of a special design permitting access to the axial space between the clamp assemblies so that internal welding assemblies may be disposed partly within said axial space and partly at a location opposite said special clamp assembly from said axial space. Each welding assembly includes a relatively large welding electrode reel and an electrode feeder at said location, communicated with a torch assembly in said axial space through a flexible tube. Each torch assembly includes means for torch position adjustments angularly and radially, and includes novel means for oscillating the torch so that a wider root weld is formed which will bridge the welding gap between adjacent pipe ends in spite of torch position misalignment and in spite of irregularities in pipe alignment and welding gap width. Novel clamp locator means and wheel support means are also disclosed.
Pipe welding apparatus, comprising a first internal pipe clamp assembly adapted to be set in the end of a first pipe, a second internal pipe clamp assembly axially spaced from said first internal pipe clamp assembly and adapted to be set in the end of a second pipe disposed end-to-end with said first pipe, said first internal pipe clamp assembly being supported by a central shaft, said second internal pipe clamp assembly being supported around sleeve means journaled for rotation around said central shaft by circularly spaced axially extending arm means supported by said central shaft, said sleeve means including passage means past said second internal pipe clamp assembly whereby access through said sleeve means is provided between an axial space between said first and second internal pipe clamp assemblies and the side of said second internal pipe clamp assembly away from said axial space, and including plural welding assemblies disposed partially in said axial space and partially at said side of said second internal pipe clamp assembly away from said axial space, and being connected through said passage means through said sleeve means, each said welding assembly being rotatable about said central shaft with said sleeve means.
Internal pipe welding apparatus, comprising a first internal pipe clamp assembly adapted to be set in the end of a first pipe, a second internal pipe clamp assembly axially spaced from said first internal pipe clamp assembly and adapted to be set in the end of a second pipe disposed end-to-end with said first pipe, said first internal pipe clamp assembly being supported by a central shaft, said second internal pipe clamp assembly being supported around sleeve means journaled for rotation around said central shaft by circularly spaced axially extending arm means supported by said central shaft, an axial space being provided between said first and second internal pipe clamp assemblies, welding apparatus including welding torch means carried by said sleeve means and having a first portion including said welding torch means disposed in said axial space and having a second portion disposed at the opposite side of said second internal pipe clamp assembly from said axial space and having a connecting portion extending through said sleeve means.
Dependencies are inferred from the claim text.