Abstract: A method and apparatus for separating a cut end (5) from a tubular element (T), such as a cast iron pipe. The element (T) is horizontal and placed on means (1) for supporting and driving it in rotation around its axis (X--X) with axial immobilization. A separator roller (E) is rotatably mounted around an axis (Y--Y) parallel to the axis (X--X) on a yoke (13) supported by a jack (16) enabling the roller to advance towards the axis (X--X) in a radial direction. The roller comprises an annular central wedge (8) bordered by two lateral cylinders (10a, 10b), and penetrates during the cutting operation into a groove (3) made by the cutting tool (2) in the wall of the element (T). At the end of the cutting operation the wedge laterally separates the cut end away from the cutting tool, to thereby avoid damaging the tool.

Abstract: A cast iron pipe T with a minimal preset diameter is supported by a frame 1 equipped with support rollers 2, 6, the roller 2 being driven to rotate the pipe about axis X-X. Cutting is executed with a tool 16 coupled to the carrier roller 2. The rollers are disposed below the pipe, and the pipe is held against the rollers during cutting by a pressing roller 5 disposed inside the pipe end. The pressing roller is shifted downwardly in relation to the carrier roller.

Abstract: A cast-iron pipe having an end socket is rotated about its axis by a driven first roller applied against the outside of the socket and a driven second roller applied against the inside of the socket and pressing the latter against the first roller. The rollers can be rotated at differing speeds, and as the socket revolves they rub off or crush burrs or other irregularities on the outside and inside of the socket. A cutting tool on a pivoted lever arm is applied by motor power to an outer face of an end flange of the rotating socket to trim burrs therefrom. The second roller supported on an articulated arrangement can be swung into and out of the socket by operation of a first hydraulic jack. Another hydraulic jack arrangement presses the second roller against the inside of the socket and increases the pressure suddenly when the roller encounters a large irregularity and decreases the pressure to normal when that irregularity has passed the roller.