Apparatus for automatically cutting pipe or tubing according to a desired pattern by securing the pattern to the tubing and by rotatably mounting around the tubing a constant linear speed, positive contact drive which traces the pattern and which is connected by a transfer arm to a cutting tool.
A method and apparatus for cutting a series of patterns spaced along the length of a tubular member (e.g. drill collar). A cutting torch is positioned and manuevered within the bore of the pipe so that all cutting is done in an inside-to-outside direction. All slag formed by the cutting action is blown away from the pipe and does not collect within the pipe bore as in previous cutting operations of this type. Further, since there is no cross-wash of the torch, there is no substantially no heat buildup in the pipe during cutting which allows proper preheating of the pipe thereby alleviating cold cuts in the pattern.
Apparatus for temporary positioning about a cylindrical object such as an underwater pipeline or the like for mounting and indexing a tool across the surface of the pipeline for treating same.
