Abstract: Apparatus for removing protective members from the threaded ends of pipe joints. A rotating head assembly is attached for longitudinal movement respective to a main frame having a motor mounted therewithin. The head includes a plurality of protector gripping jaws which are radially spaced from one another and aligned such that movement of the head assembly towards and away from the main frame causes the jaws to releasably grip the pipe protector. The rotating head assembly includes spaced parallel arms connected to cause the jaws to maintain the same relative position as the jaws are moved apart from one another to accommodate different diameter pipe. The apparatus can also be used to engage and remove pipe couplings as well as other threaded members. A second embodiment of the invention includes a cleaning head assembly mounted to the main frame which cleans the threads of both the box end and pin end of the pipe.

Abstract: A method of joining tubular elements to provide fluid tight connections is disclosed in which the mating portions of the joined tubes are preformed so as to be able to be located with respect to each other prior to soldering, brazing, or other joining process. The preforming operations involve the punching or shearing of an opening in the sidewall of a body tube to which a branching tube is to be joined, in which shearing operation a pair of cusps or tabs are formed at opposite locations on either side of the sheared hole. The punching or shearing is carried out by a punch tool moved to intercept a segment of the body tube sidewall to form an opening, with portions of the tubing wall on either side of the opening formed remaining, these portions being displaced upwardly by the tool to provide the locating cusps or tabs at the periphery of the opening so-formed.

Abstract: The inventive method and apparatus make a backout stop for a caulker cartridge having a cylindrical barrel of resin material. The backout stop is formed at the rear end of the barrel as an inwardly oriented hook that has a generally triangular cross-sectional shape. The two exposed sides of the hook are an inclined surface sloping radially inward so a plunger can slide over the backout stop into the rear of the barrel and an abrupt edge extending radially inward to prevent the plunger from backing out of the barrel. The apparatus includes a tool with a socket that fits over the rear end of the barrel and has a resin-forming edge protruding obliquely into the socket to extend along the inclined surface of the hook when the tool is seated on the rear end of the barrel. The barrel and tool are supported on a common axis, are moved into axial engagement, and are rotated relative to each other while pressed together so that the edge plows along the inclined surface and forms the resin material into the hook.

Abstract: Four carriers are disposed at 90.degree. intervals about the axis of rotation. A wound core formed on a mandrel is shifted to one of the carriers contacted with the mandrel. The carrier with the core is rotated through 90.degree. to reach a compression unit and the core is compressed through the movement of the carrier toward the unit, after which the compressed core is welded. When the carrier with the completed core faces a discharge channel through its intermittent rotation, the carrier moves into the channel. Then the carrier ascends to leave the core in the channel and is then rotated to oppose to the mandrel to repeat the above process. The remaining carriers are similarly operated.

Abstract: A separating device for bar and pipe-shaped workpieces, especially a cut-off machine, with a chucking device for chucking the cut-off workpieces and with a separating unit such as a cutting head for cutting off bar and pipe sections. The separating device includes at least one machining unit for machining the ends of the cut off workpieces and at least one feeding device for feeding a cut-off bar or pipe section cut off by the separating unit, to the end machining unit.

Abstract: Apparatus for preparing two tubes to be welded together at their ends and for placing the ends in opposed, abutting relationship for welding. The apparatus includes means for annealing a portion or length of each tube, and means for stretching the portion or length of each tube for straightening purposes after it is annealed. In addition, the apparatus includes means for severing an end portion of the annealed length of each tube to provide two annealed tube ends for abutting and welding together. Further, the apparatus includes means for forcing the abutting ends of the tubes together in a manner that will upset the material of the tube ends during welding.

Abstract: A method for forming cooling coils of successive layers of rectangular configuration, in which the front end of an elongated tube is threaded between rolls of a straightening apparatus and clamped onto the periphery of a rectangular table, whereafter the table is rotated about a central axis while the incoming tube shifted in direction of this axis, and while the tube upstream of the table is held in taught condition by the straightening apparatus so that the tube is wound into a coil of rectangular configuration about the table. After a coil of predetermined length has thus been wound, the table is stopped, the tube cut between the straightening apparatus and the table and the cut rear end of the tube is also clamped to the table.

Abstract: A means and method of installing emitters in irrigation tubing, wherein a core assembly dimensioned for ready insertion in a thinwall irrigation tube is provided with internal rollers which are confronted by fixed external rollers positioned to function through the walls of the irrigation tube so as to retain the core assembly in a fixed position as the tubing is moved between the internal and external rollers; the core assembly including an anvil periodically engaged by an external radially movable cutting tool to form in the irrigation tube a series of emitter receiving perforations; the core assembly also including a fork member for spacing the perforated wall of the irrigation tube from the opposite wall thereof to facilitate reception of emitters forced therein by an external mandrel; the anvil and fork and their respective cutting tool and mandrel adapted to be spaced at preselected distances depending on the required emitter spacing.

Abstract: Metal cans are welded by frictional treatment of the materials joined. The treatment is provided by a rapidly rotating smooth hard friction tool e.g. wheel contacting a surface of the metal above the join while the parts joined are held in pressure contact by independent pressure exerting means and/or by the wheel itself. In the formation of can side-seams the wheel and the can are relatively traversed and a longitudinal continuous side-seam is formed which in the case of metal to metal joints is metallurgically homogeneous and may be characterized in that no signs of melting of the base metal are visible at the welded interfaces.

Abstract: A pipe cleaning brush assembly for attachment to the rotatable face plate of a pipe facing machine for rotation therewith to clean the outer surface of a large diameter pipe section proximate the end thereof simultaneously with the machining of the pipe end face. The assembly includes a clamp having an inverted U-shaped member for placement over the edge of the face plate with a clamp jaw lock acting as a vise to grip the face plate and a clamp wedge lock engaging the face plate to resist centrifugal forces developed during rotation. A brush arm is pivotally mounted to the clamp, with a brush attached at one end and a cam at the other. The cam upon rotation causes the brush arm to pivot between a retracted position wherein the brush is held above the pipe surface to be cleaned and a position wherein the brush rests on the pipe surface.

Abstract: A subsea machine tool for preparing the end of a bare piece of pipe in a subsea location for receiving an overfitting coupling and includes a support assembly adapted for raising and lowering in a body of water. A pipe clamp is attached to each end of the support assembly for clamping the pipe. A split frame is supported by the support assembly for axial travel. A split ring gear assembly is supported by the frame for rotation therein and about the pipe section. The split ring gear is in the form of a spool assembly wherein an involute gear forms one flange of the spool and a face plate forms the other flange. The spool is supported about the exterior thereof by a split fixed ring which in turn is supported by the frame. The fixed ring has mounted thereon one or more hydraulic motors which are arranged for rotating the ring gear relative to the fixed ring. The face plate has mounted thereon for rotation therewith work means in the form of a milling machine.

Abstract: A method for forming cooling coils of successive layers of rectangular configuration, in which the front end of an elongated tube is threaded between rolls of a straightening apparatus and clamped onto the periphery of a rectangular table, whereafter the table is rotated about a central axis while the incoming tube shifted in direction of this axis, and while the tube upstream of the table is held in taught condition by the straightening apparatus so that the tube is wound into a coil of rectangular configuraton about the table. After a coil of predetermined length has thus been wound, the table is stopped, the tube cut between the straightening apparatus and the table and the cut rear end of the tube is also clamped to the table.

Abstract: A steel pipe is coated with resin at high temperature. After the temperature is lowered slightly below the softening point of the resin, the coated pipe is cut to length and then allowed to be cooled down to an ordinary temperature, meanwhile the resin is freely shrunk, leaving little residual strain in the cooled product coating.A cooling means for cooling the coating from the middle toward the ends in its longitudinal direction and a means for cooling the coating forcibly are provided.

Abstract: The method is performed on a cylinder having at least one end opening for receiving a flange forming tool. An annular shoulder is formed extending from the outside of the cylinder substantially perpendicular to the axis of the cylinder. Also, an annular extension is provided on the cylinder having an outside surface extending from the inside of the annular shoulder to the end of the cylinder. The length of the outside surface is formed to be greater than the radial width of the annular shoulder. A flange forming tool is then applied against the free end of the annular extension to move the annular extension until its formerly outside surface is against the annular shoulder to provide an end flange extending substantially perpendicularly to the axis of the cylinder.

Abstract: An annular work piece, such as a large pipe, is prepared for welding end-to-end to a similar piece, by a combination of cutting or machining and swaging or cold-rolling, to form bevel, land, and an annular fin-like projection which will better control penetration. In its apparatus aspects, an internal clamp mechanism is used to hold the pipe against rotation while also keeping it essentially circular in outline, a series of cutting tools, preferably complementing each other, is driven around the pipe and end for exterior and interior bevel surfaces with a more or less plane land surface between them. Rollers which serve to constrain and guide the cutting tools are thereafter employed to swage or cold-work the interior of the pipe end to form a small sharp-edged annular projection which serves as a heat sink to control and limit penetration of molten metal from an external electric arc into the interior of the joint. A supplementary back-up or chill may be used for further control, if needed.