Abstract: A reamer for finish machining a bore formed in a workpiece and method for providing a reamer with an abrasion resistant material. The reamer includes a body defining an outer surface, a cutting blade and guide member each coupled to the body, and an abrasion resistant material coupled to the reamer to form a friction resistant layer having a contact surface thereon. The abrasion resistant material impregnates the reamer to define an intermediate layer of abrasion resistant material intermixed with the reamer. The method includes the steps of assembling the reamer, applying an abrasion resistant material to said reamer, and allowing the abrasion resistant material to impregnate the reamer to define an intermediate layer of abrasion resistant material intermixed with the reamer.

Abstract: An internal welding fixture is disclosed for locating and temporarily retaining two tubular workpieces relative to one another. The internal welding fixture includes a plurality of shoe assemblies, each of the shoe assemblies being radially disposed about a single axis and being radially movable between a contracted position and an expanded position. The shoe assemblies are equally divided into first and second groups of shoe assemblies. The internal welding fixture further includes a drive arrangement operatively connected to each of the shoe assemblies for moving each shoe assembly between its contracted position and its expanded position. The shoes of one of the groups of shoe assemblies are interconnected to the actuator through a delay mechanism which serves to mechanically delay retraction. Upon expansion of the shoe assemblies, the internal welding fixture is operative to reinforce and temporarily retain a joint formed between two tubular workpieces during a joining procedure, such as welding.

Abstract: A machine tool apparatus having a burnishing head assembly coupled directly to a hollow, tubular output shaft of the motor of the apparatus. The tubular output shaft is coupled to the armature of the motor and allows a cylindrical workpiece or part inserted into the burnishing head assembly to be received and fed coaxially through the motor. The burnishing head assembly is coupled to the motor such that rotation of the tubular output shaft of the motor causes a corresponding rotation of a plurality of rolls of the burnishing head assembly. When the rolls come into contact with a surface of the workpiece or part, they bear against the surface to effect a roller burnishing of the surface. In the preferred embodiment the rolls are set at a helix angle which causes the rolls to draw the workpiece or part through the tubular output shaft of the motor and burnishing head assembly once contact with the rolls is made, to thereby obviate the need for an individual to manually feed in the part.

Abstract: A welding fixture is disclosed for temporarily retaining two tubular workpieces relative to one another. The welding fixture includes a plurality of shoe assemblies, each of the shoe assemblies being radially movable between a contracted position and an expanded position. The welding fixture further includes an actuator operatively connected to each of the shoe assemblies for selectively moving each shoe assembly between the contracted position and the expanded position. Upon expansion of the shoe assemblies, the welding fixture is operative to reinforce and temporarily retain a joint formed between two tubular workpieces during a joining procedure, such as welding.

Abstract: A clamp that encircles the outer rim of an out-of-round workpiece such as a deformed tubular pipe to reform the cross-section of same into one that is substantially round, the clamp including a frame, a plurality of pivotally mounted force applying assemblies each having a force applying member to engage the workpiece, and drive means for pivoting all of the force applying assemblies simultaneously such that the force applying members are simultaneously and uniformly repositioned radially inwardly and outwardly relative to a circle defining the locus of pivot axes for the force applying members, the force applying members being adapted to close into a circle having a diameter sized to engage the workpiece when inserted therein.

Abstract: A flange alignment tool for temporarily aligning and holding a flange of a workpiece in concentric alignment with a tubular workpiece such as a pipe. The tool includes a C-shaped frame member having integrally formed first and second opposing end portions, a transverse frame section extending between the first and second opposing end portions, and an elongated base portion extending outwardly from the second end portion. The first opposing end portion, transverse frame section, and base portion each contain threaded apertures and associated, manually adjustable alignment screws. The tool is secured to a flange by placing it over an outer edge portion of the flange with an outer surface of the flange abuttingly engaging the second opposing end portion of the C-shaped frame member. The alignment screw of the first opposing end portion is then manually screwed into contact with an inner surface of the flange to secure the C-shaped frame member securely thereto.

Abstract: A clamp encircles the outer rim of an out-of-round tubular pipe to reform the cross-section of same into one that is substantially round, the clamp including a ring frame, a plurality of pivotally mounted roller assemblies each having a roller to engage the pipe rim, and drive means for pivoting the roller assemblies such that the rollers simultaneously rotate to contract radially inwardly or outwardly relative to a circle defining the locus of pivot axes, the rollers describing first and second circles and being adapted to close into a circle having a diameter sized to engage the pipe, when inserted therein. The clamp can include multiple sets of separately adjustable roller assemblies.

Abstract: A deburring tool for deburring the irregular or out-of-round edge of holes drilled in a workpiece having a shank with a self-piloting head and a blade associated with that head, a mechanism for permitting the blade to move axially within limits of movement relative to the shank and a drive element and a mechanism for biasing the blade toward a workpiece. Further, a mechanism is provided for adjusting the bias of the biasing mechanism to vary the bias in accordance with the characteristics of the material to be deburred.

Abstract: A hinged screw section for a worm drive garage door operator which allows the worm shaft to be assembled at the factory and folded back upon itself so that it can be shipped in a smaller and shorter package. Two different joints have been developed, one of a "I" type in which the connecting link between the two sections of worm shaft is merely a flat metal section with a hole in each end which fits into a slot in the ends of the two worm shaft sections and the assembly is pinned together with two rivets or bolts and the spacing between the two threaded shafts is such that a rack driven carrier will mate with threads of each portion. A second configuration utilizes an "H" joint and the link contains slots and flat tangs are formed on the ends of the two threaded shafts and joined with rivets to the link.