Abstract: An apparatus for parting pipe has two shearing members bearing against each other and mutually movable along a cutting plane and with holes for the pipe which form exterior shearing edges. The pipe bore is supported by a mandrel divided into two sections mutually displaceable and forming interior shearing edges. The moving shearing member is driven by a crank mechanism, including a single crankshaft, at a mounting arrangement spaced from a bearing arrangement via which the fixed and the movable shearing members are mounted and guided and in which an elongate hole has its longitudinal axis directed towards the crankshaft and a bolt adapted to said hole.

Abstract: An apparatus for bending a pipe about a fixed forming member serving as abutment has members gripping the pipe externally as well as two mandrels intended to come inside the pipe. Each mandrel has an end piece movably carried by one end, the end pieces being against each other inside the pipe at the beginning of bending. During the initial bending phase, each end piece is urged outwards from the bending center to expand the pipe to such an extent that after terminating bending, the pipe is given a circular cross section subsequent to a certain amount of return spring of the pipe wall.

Abstract: A bimetallic element in which a bimetallic strip of two bands of different metals is wound helically into an elongated body, said body having in its center a free space, the diameter of which is smaller than the thickness of the bimetallic strip and preferably is essentially zero. By winding said elongated body into a helical spring, the outer diameter of which is substantially greater than the outer diameter of the elongated body, an element is obtained that can be used as a thermostatic actuating means in a thermostatic device.