Abstract: The invention contemplates portable apparatus for use in hot-bending of tubular pipe, comprising a rigid triangular frame of connected legs wherein a forming-die platform is located near one corner of the frame, along with a back-up shoe support at the corner, so that pipe-support and bending may commence from said one corner, progressing in the direction of one of the adjacent sides of the frame. The bending forces are provided by a winch mounted on the same platform and utilizing block and tackle that has anchoring reference to one or both of the remaining corners of the frame. In a preferred embodiment, the frame legs which define the platform corner are truncated into halves, whereby the platform and its adjacent leg halves comprise one of two removably securable subassemblies.

Abstract: An apparatus for constricting or closing a conduit comprises a pair of generally parallel clamp frames opening in the same direction and disposed at a separation such as to accommodate the conduit between them, the clamp frames being formed in one side of their opening with a recess in which fits a stationary clamp member and being secured on their other side to a fluid operated ram that actuates a movable clamp member towards the stationary clamp member. After operation of the ram the two clamp members are fastened together, eg by bolts, and then the ram is retracted. The clamp members can then be removed from the clamp frames.

Abstract: A manipulator system for automatically feeding blanks into a gap press and for collecting finished articles therefrom has two major parts. The first part is a revolver table and the second part is an automatic handling device, or robot. The revolver table should be located between the press and the robot. It is stepwise rotatable around a vertical axis and has a number of arms each carrying a set of tools. The robot has at least two arms swingable around a vertical axis between positions for collecting blanks, for temporary holding of semiprocessed articles, as well as for placement of blanks and semifinished articles between selected tool sets on the arms of the revolver table and for sequential working in the press and for delivery of finished articles.

Abstract: In a hydraulic press for heavy workpieces the frame of which comprises two yokes spaced by columns, the yokes are movable towards and from each other by the hydraulic working cylinders of the press. At least one of the yokes carries tools displaceable along the yoke. The arrangement makes it possible for the tools to work on every portion of a workpiece filling out the entire space between the columns, yet the cylinders are fixed relatively to the yoke carrying them which eliminates the need for flexible connections for the hydraulic medium.