Abstract: The present invention pertains to a cam-actuated ratchet feed drive for a clamshell lathe having a guide block attachable to the rotating ring gear of the clamshell and which slidingly supports a tool holding block in a dove-tail guideway. A threaded lead screw is coupled to the tool holding block and adapted to be driven either clockwise or counterclockwise by a cam-actuated pawl/racket combination. Means are provided for shifting a pair of pawls relative to associated ratchet wheels such that one, the other or neither of the ratchet wheels is driven upon engagement of the cam surface with a stationary cam follower.

Abstract: Disclosed is a portable machining lathe (10) having a stationary member (11) interconnected with a gear housing (16) which covers a rotating gear member (15). A circular race member (25) is connected to the gear member (15) and held in place by means of a plurality of roller bearings (20). A tool module (35) having a tool bit (54) machines the work piece (38) and automatically advances longitudinally along the work piece (38) by means of an advance mechanism (72).

Abstract: The invention relates to cutting and the like tools and is particularly concerned with the cutting of an internal weld bead from within plastics pipes. It is well-known to remove an external weld bead from the junction between two plastics pipes, not only to provide a smooth external profile but also to allow the weld between the pipes to be inspected. The costs and difficulties in removing the internal beads at the welded junction has frequently resulted in the internal bead being left, and when the internal weld cannot be inspected, and turbulence created in gas or fluid being driven through the pipeline results in a higher power requirement.

Abstract: A machine tool (10) intended for machining components on site comprises a frame (12) mounted on bearings (14, 16). Each bearing (14, 16) comprises an inner fixed bearing (14C, 14D, 16C, 16D) clamped to a work piece (22) and an outer rotatable bearing (14A, 14B, 16A, 16B). The frame (12) supports one or more spindles (74) having two cutting tools (82, 84) which are driven by air motors (76) through gear boxes (78). The frame (12) is driven by an air motor (60) through a reduction gear box (56) and annular gear (54). The bearings (14, 16) are both split to enable the machine to be assembled around a work piece (22) so that the tool can machine diameters (22A, 22B).

Abstract: A rotary edge assembly for finishing the circumferential edge of a shell-like workpiece is adapted for incorporation into an eyelet punch-type press work station. A pair of rollers are diametrically positionable for rotation about a work axis. The press head moves the rollers into an engaging operational relationship with a workpiece for rotation along the edge. An adjustment knob is threaded to a saddle member for adjusting the position of the rollers for a given workpiece.

Abstract: A portable machine for field facing and threading of pipe including a body in which is carried a shaft for rotation about a central axis. Attachment apparatus attaches the body to the end of a pipe so that the central axis of the machine and pipe are substantially coaxial. Attached to the shaft is a cutting tool assembly which rotates with the shaft to cut the end of the pipe. Linear and radial feed components provide, respectively, generally longitudinal and transverse motion to the cutting tool assembly relative to the central axis of the machine. The relative taper and thread pitch producible on a given pipe section may be modified by interchangeable gear assemblies.

Abstract: A portable flange facer may be used to machine flange faces without removing the pipe from its installation thereby avoiding extensive disassembly and downtime. A stationary spindle, mounted centrally within the pipe bore, provides a structure about which a main body rotates. A motor, mounted upon the main body, and a gear means, coupling the motor to the stationary spindle, are used to rotate the main body about the spindle. A cutting element, mounted upon a turning bar slidable within the main body, may be moved radially inwardly and outwardly by manual or automatic means. The flange facer may be used to resurface a flange face or to form circular grooves therein.

Abstract: The chamfering device comprises a frame to be centered and fixed coaxially within the pipe. A tool and its support are mounted concentrically around the frame and are movable along and about the axis in both translation and rotation by drive motors, and its position is detected and fixed before chamfering. The entire operation proceeds automatically without visual control or manual action, so that it can be performed in a radioactive environment.

Abstract: A portable lathe tool includes fixed and rotating split rings, the fixed ring arranged to be secured to a pipe workpiece, the rotating ring being relatively rotatable with respect thereto for carrying a tool capable of performing a machining operation on the workpiece as it is driven around the circumference of the latter. A bearing arrangement for supporting the relatively rotating ring on the fixed ring is disclosed as having a plurality of discreet, circumferentially spaced bearing segments, each having converging radial and thrust bearing surfaces for engaging the rear end area of the rotating ring for axially, radially and rotationally locating and guiding the rotating ring relative to the fixed ring. An adjustment system is provided for accurately locating and adjusting the position of each of the bearing segments ring relative to the fixed ring to permit compensation for wear and dimensional variations.

Abstract: A wooden wine barrel has one end removed, and is supported by and rotated by power driven support wheels. A router type cutter head extends into the barrel on an inner end of an arm which is pivoted at its outer end so that the cutter head can follow the contour of the barrel, and means to move the barrel longitudinally with respect to the arm (or vice versa) to effect relative longitudinal movement between the arm and barrel.

Abstract: A cutting tool assembly including a pair of articulated arcuate strap members adapted to be clamped about a cylindrical pipe for cutting about the circumference of the pipe. A guide mechanism is provided including a pair of roller members engaged about the periphery of the pipe member to be cut and a guide part on a cutting tool, which guide part cooperates with the roller members.

Abstract: A multi-speed drive system for a portable lathe is disclosed wherein two or more input drive gears are utilized to drive a cutting tool holder ring. Each of the input drive gears has a different pitch diameter so that it will impart different drive speeds/torque characteristics to the cutting tool holder ring. A main drive gear is interposed between each of the input drive gears and a ring gear attached to the cutting tool holder. The input drive gears are each engaged with the main drive gear and a drive motor is connected to the desired input drive gear.

Abstract: The adjustment device comprises three rings (15, 16, 17), whose inside diameter is greater than the outside diameter of the part of the hollow workpiece (5) on which the chamfer (10) is to be machined. The support ring (15) is fastened in a substantially centered position on the workpiece (5), and carries support assemblies (20) for the orientation ring (16). The assemblies (20) make it possible to adjust the position of the orientation ring (16) in the direction of the axis (8) of the workpiece (5) and its orientation in relation to the cross-sectional planes of the workpiece (5). The adjustment ring (17) is mounted for adjustment in position on the orientation ring (16) in the plane (11) of connection of the chamfer (10). The machine is adjusted with the aid of comparators (59, 60) whose sensors come into contact with reference surfaces (17a, 17b) of the adjustment ring (17).

Abstract: A device for cutting a precise angle into the end of a tube. The device includes a tool having a pilot member insertable into the end of the tube, a plurality of spaced apart cutting members for engaging the end of the tube, and a body rigidly joining the pilot member and cutting members to one another. A drive mechanism is attached to the body for selectively rotating the tool.

Abstract: A rotary cutting tool useful for remotely machining tube ends, and method for using the tool to remotely machine a tube end portion such as for weld preparation. The cutting tool comprises an elongated main body having a reduced diameter front end portion and provided with three equally-spaced longitudinal grooves, each groove containing a spring-actuated cutting blade pivotally attached to the tool body. The cutting blades are adjustable radially relative to the tool body by spring and axially movable collar means, which collar is connected to and operated by an actuating piston means located at the opposite end of the tool. In use, the tool forward end with cutting blades retracted is first remotely inserted through an opening, after which the tool forward end with blades extended is inserted into a tube. The cutting tool is then rotated for trimming the end of the tube to a desired angle, and cleaning the tube end outer surface such as in preparation for welding a new mating replacement tube in place.

Abstract: A portable multi-function pipe machining apparatus has a plurality of different cutting attachments to provide a portable machining center. The apparatus has a split frame with an inner ring attachable to the outer periphery of a pipe and rotatably mounts an annular tool head which can carry a selected cutting attachment. The annular tool head is driven by one or more drive motors mounted on the inner ring and having driven gears which mesh with an external annular gear on the annular tool head. Each of the cutting attachments mounts a cutting tool for movement along one or more axes with the movement being derived from rotation of the annular tool head and more particularly by rotation of a driven gear associated with the cutting attachment which is rotated by a stationary tool driving gear 22 on the inner ring.