Abstract: A hole opener for placement in a drill string having a body generally comprising a collar, a triangular mid-section, a triangular shaped pilot and a bull nose. The collar provides means for attaching the tool body to the drill string. The triangular mid-section has three longitudinal, radially spaced apart blade members that are parallel to the central axis of the tool body so that the blades can cut into the walls of the bore hole to enlarge the size of the bore hole. Three annular flow zones span the distance between the blade members so that fluids and cuttings can circulate through the bore hole. The pilot section also has three longitudinal, radially spaced apart blade members that are parallel to the central axis of the tool body bore and three annular flow zones which span the distance between the blade members of the pilot. The pilot section is downhole from the mid-section.

Abstract: A rotating cutting tool has a clamping system that positively locks generally square or rectangular carbide cutters into position on the cutter head and extending outwardly from the head for spot facing or boring as the head is rotated. The head has backing supports that are raised above the head end surface for backing and securely holding the carbide inserts to prevent breakage or damage. The clamping system is very rapidly used, and particularly in the case of a spot facer, by having a proper diameter pilot pin member in the center, the carbide cutter inserts can be quickly adjusted for the desired cutting diameter. The unit has no flutes as normally required for high speed or sweated carbide spot facers.

Abstract: A portable milling tool for milling pipes, tubes, cylinders, and the like has a collet at one end thereof for securing and centering the tool to the work piece. An adjustable in-line rod connects the collet to the tool and permits the collet to secure or release the work piece. An in-line shaft moves the tool into or out of engagement with the work piece. The tool is of compact design allowing it to be used in on-site situations wherein tool size is a problem.

Abstract: A tool head assembly for use in preparing a tube for welding including a center pilot which is rotatable. The center pilot is adapted to enter a bore of a tube to center the tool head assembly by being provided with ball bearings which rotate around the internal surface of the bore of the tube. In addition, the ball bearings are moveable thereby enabling a required operative diameter to be selected which enables the center pilot to enter the bores of a batch of tubes having a range of internal bores. The center pilot is engageable with a tool holder which is connectable to a machine tool. The tool holder also supports a pair of bevelling tools and a facing tool.

Abstract: Methods and apparatus for locating and drilling pilot holes. Known systems are time-consuming and difficult to carry out and do not reliably result in straight and accurate pilot holes. The invention provides easy and accurate location and drilling and accurate alignment with an initial hole on an inaccessible surface. Clamp jaws (22, 50) are spring loaded into a closed position. Pliers (82) engage jaw (50) and head (64) of a shaft (60) extending through jaw (50) and attached to jaw (22). Pliers (82) are squeezed to move jaw (50) along shaft (60) away from jaw (22). Clamp (22, 50) is placed around a workpiece (10, 8, 15) with a pilot (38) carried by jaw (22) engaging a back surface pilot hole (16). Pliers (82) are released to allow spring (66) on shaft (60) to clamp jaws (22, 50) around workpiece (10, 8, 15). Drill bit (90) is introduced into a bushing (54) in jaw (50).

Abstract: A tool for chamfering the ends of plastic pipe of various diameters comprising a main body having various concentric circular grooves of different diameters which are shaped and sized to receive the square-cut ends of standard size plastic pipe. Each circular groove has an associated cutting blade mounted transversely with respect to the circumference of the pipe in a recess on the outer surface of the main body and positioned so that as the tool is rotated about the square-cut end of a pipe inserted in its correspondingly-sized groove, a chamfer is cut on the outer circular edge of the pipe. During the chamfering process, cuttings cannot enter the pipe because the open end of the pipe is covered by the tool and cuttings leave the tool through the recess. Cutting automatically ceases when the pipe end becomes seated in the groove.

Abstract: A hole saw guide positions a hole saw while forming a new hole either partially overlapping or surrounding an existing hole in a work piece. The hole saw guide includes a disc-shaped body having a pilot drill guide hole through the center sized to guide the pilot drill of a conventional hole saw. Two or more guide arms extend radially outwardly from the body and have outer ends which engage the inner circumference of an existing hole in the work piece to secure the guide at a desired position. The guide arms are adjustable in length radially so the pilot drill guide hole in the body can be positioned where desired. The pilot drill of a conventional hole saw is then inserted into the pilot drill guide hole which properly centers the hole saw so that the new hole formed in the work piece is properly located.

Abstract: A device for automatic advance of a rotating tool towards a workpiece, which includes a rotating tool holder for holding a cutting tool for operation on the workpiece. A gear wheel bears against the rotating tool holder which forces it toward the workpiece. A holder is provided to secure the gear wheel with respect to the workpiece. A device associated with the rotating tool holder engages the gear wheel and rotates it as the tool holder rotates. Associated with the holder and the gear wheel is a mechanism for advancing the gear wheel towards the workpiece as the gear wheel rotates. A stop motion apparatus associated with the gear wheel and the rotating tool holder is included for stopping the rotational movement of the gear wheel. The stop motion apparatus consists of a non-rotatable cam which operates on the cam follower to disengage it from the gear wheel, stopping the rotating movement thereof during a segment of the rotation of the tool holder.

Abstract: A boring head centering device which can be operator activated to center a boring head within a cylinder. Centering fingers extend radially from a boring head to center the boring head. The centering fingers are retracted to permit unobstructed boring with simultaneous protection of the centering mechanism from fouling.

Abstract: A portable tube end cutting tool includes a tool support shaft with an alignment assembly at one end for insertion into the tube whose end surface is to be machined and a cutter head assembly mounted for rotation about the support shaft. The tool portion to be inserted into the tube space adjacent the tube end to be machined is compact and is adapted to be locked in accurate alignment by incremental rotation of the support shaft over small angular increments, and is particularly useful where the tube surfaces to be machined are located in confined or relatively inaccessible working places.

Abstract: A portable horizontal drill press for drilling holes in the surfaces of highway vehicles and construction type equipment including a T-shaped base support beam which is mounted on swivel type wheels with low clearance provided to minimize tipping. A drill support column having a slidable mounting platform for an industrial type drill motor is mounted at one end of the beam support structure. The drill motor platform includes a hand wheel and lead screw combination which is used for feeding the drill motor into the work. The height of the drill motor platform can be adjusted either by a rack and pinion gear provided on a one-piece solid column or the column can be provided in several telescoping sections which can also combine a rack and pinion gear for the upper section of the column. A similar height elevating and positioning arrangement can be provided for a center support column provided at the opposite end of the base support beam.

Abstract: An arrangement for performing machining operations at the end faces of pipes includes a tool holder which is equipped with respective tools and is mounted at least for rotation on a carrier. The carrier is mounted on the machine frame for movement normal to the axis of the pipe which is clamped in a clamping device mounted on the machine frame, such that the axis of the pipe extends parallel to the axis of the tool holder. The tool holder has a central passage in which there is guided a spindle having a tapering end portion close to the pipe. A cylinder-and-piston unit pushes the spindle out of the passage and into the interior of the pipe so that the tapering end portion of the spindle becomes coaxially nested in the open end of the pipe, its axis and thus the axis of the tool holder then coinciding with the axis of the inner surface of the pipe. The carrier is then arrested in this working position by a pair of clamping devices, and the spindle is retracted into the passage.

Abstract: A portable tube end preparation tool includes a right angle drive motor (44) for rotating the cutter head (16) and a right angle cutter feed nut drive shaft (78), both motor and feed nut drive shaft capable of being positioned in the same general plane to provide a narrow and short tool profile for enabling the tool to be used in very confined areas. The drive motor and feed nut drive system are mounted in separate sub-assemblies for enabling simple repair and inspection of the tool without complete or substantial disassembly of the tool, and to permit the feed nut drive to be rotated to different radial positions.

Abstract: A portable lathe for machining the end of a pipe workpiece for butt welding, having a cylindrical shroud with a collar for receiving the workpiece and three equiangularly spaced, hydraulic clamps mounted on the collar for clamping the pipe workpiece therein coaxial with a rotary cutting tool support of the lathe. Three equiangularly spaced, hydraulic actuators provide for axially feeding the tool support during machining and are hydraulically interconnected for damping an unbalanced machining reaction force on the cutting tool support.

Abstract: A rotary reaming and counterboring tool includes a central body (28), a proximal mounting flange (30) and a distal end (36), longitudinal lands (44) and straight flutes (40) between the lands. The lands overhang the distal end of the cutter body and are provided with forward facing (relative to the cutting direction) radial reaming cutting edges (64) at the distal ends of the lands and counterboring radial cutting edges (68) at radially stepped portions of the lands. The lands are generally trapezoidal in cross section and a central bore (56) extends through the central body for accommodating a mandrel that supports the cutting tool and its driving head during operation of the tool to perform a reaming and counterboring operation.

Abstract: A rotary tool, adapted to be chucked in a rotary power tool, is provided with cutting blades for cutting away the annulus that surrounds the core portion of a lock of the type referred to above. When the annulus is cut away, the tumbler mechanism is exposed axially outwardly so that the tumblers may be actuated by a depressor tool for opening the lock in the event the key has been lost. The cutter has an axial tubular front end portion that pilots on the lock core and fits the annular gap between the core and surrounding portion of the lock. The front end of the cutter has a stop portion projecting axially ahead of the front cutting edges to limit the depth of the cut and to prevent damage to the projecting ends of the tumbler pins.

Abstract: A device for safely ventilating high pressure gas from a gas well that is trapped therein by a pressure seal ball jammed in the well casing head and for retrieving the ball after ventilation is complete comprising a hollow tube adapted for tight attachment into the casing head valve, a shaft suspended therein capable of reciprocal and rotary motion, and means attached to the shaft to pass through the casing head valve and drill into and capture the seal ball and ventilating passages in the tube to allow the ventilating gas to pass off harmlessly.

Abstract: The tool includes a mandrel on which is seated and axially held an exchangeable milling cutter, coupled to the mandrel by a clutch drive ring for shell end mill arbors, for transmitting the torque during the milling procedure. In addition, a stop element is mounted on the mandrel, held against an axial displacement, but permitting relative rotation of the mandrel for operating the cutter, whereby particularly a thrust bearing is used between the mandrel and the stop element. The stop element is adjustable and limits the longitudinal movement of the cutter. To prevent any damage to the chamfer-area around the housing-bore hole by the cutter, the stop has to be adjusted accurate to the gauge, in reference to the cutting edge geometry of the cutter teeth, so that just a thin blade of material of the outer ring lip remains. The whole device is centered with the mandrel in the bore of the bearing or bushing which is to be removed after cutting one ring lip.

Abstract: An adapter for use with a commercially available flat wood bit which enables a previously bored hole formed in a work piece to be accurately and easily enlarged. The adapter includes spaced keepers which snugly receive the opposed flats of the bit therebetween, with the pilot bit being centered within a cavity formed within the adapter, so that the adapter is properly aligned respective to the wood bit and to the previously formed hole. The adapter includes a number of cylinders of various outside diameters which enables a single adapter body to be used in conjunction with a number of different size bits which are used to form a number of different diameter holes.

Abstract: A spot facing tool is mounted on a work table with an arbor located beneath the work table and movable upwardly through an opening in the work table. A cutter holder is mounted on the surface of the work table with a cutter receptacle positioned in alignment with the arbor. A cutter is releasably retained in the receptacle. The arbor is movable upwardly through the opening of a work piece and into the cutter, and connected to the cutter. The cutter and arbor are moved downwardly until the cutter engages the work piece and rotation of the cutter and arbor causes spot facing of the work piece about its opening.

Abstract: A system is disclosed for the controlled depth scoring of conduits for the pneumatic transfer of particulate plastic materials comprising: a scoring assembly having interconnected drive power inlet means, motor drive means, drive coupling means, centering means and controlled depth score cutting means; and feed means connected therewith for longitudinally passing said scoring assembly through said conduits at a controllable uniform speed.

Abstract: A floating knife of a boring tool for machining the inner surfaces of cylinders, has a cutter member and a support element arranged on both sides of the floating knife. The support elements are arranged for cooperation with the respective cutter member. The support elements are arranged behind the cutter member as viewed in the feed advance direction. The support surface of the support element is spaced behind the cutter member in the floating direction of the floating knife by a spacing corresponding to the extent of the allowable yielding of the cutter member in the radial direction, whereby the cutter member is able to machine the inner surface of a cylinder even if the latter has cross-apertures in its wall because the support member limits the radial floating of the knife to a safe extent.

Abstract: Increased resistance to excessive wear rate is provided in certain automobile automatic transmissions by providing a combination thrust-washer/radial-bushing at a certain position on the oil pump stator where the customarily manufactured transmission is provided only with a thrust-washer. The combination thrust-washer/radial-bushing provides bearing surfaces for the direct clutch drum to revolve against in both the lateral and radial directions. A reamer tool designed specifically for modifying the rotor portion of the direct clutch drum is disclosed.

Abstract: The present invention relates to a machining process especially suitable for facilitating the construction of large turbines wherein displaceable guide blades for directing fluid to the rotor have to be provided on the downstream side of the volute or spiral tank of the turbine. Hitherto the whole unit had to be machined and assembled in the workshop and then transported to site.

Abstract: A tool for cutting or reaming a counterbore in a workpiece is guided by a pilot member secured in a bore. The tool includes a rotatable blade holder having a plurality of attached cutter blades. One of the cutter blades has a lateral cutting edge at a pre-selected radial distance from the rotational axis of the blade holder. The remaining cutter blades do not include lateral cutting edges. Consequently, the lateral or diametral dimension of the counterbore is defined by a single blade. This arrangement substantially prevents oversizing of the counterbore.

Abstract: A reamer for fine reaming of ports containing a working portion with cutting blades in which, and a rear guiding portion in which at least three smoothing inserts are fitted the smoothing inserts, being inclined at a common auxiliary negative relief angle H' the value of which remains within the limits of 0.degree. 0' to 0.degree. 5'.

Abstract: A follower is provided for a conventional flat drill bit which adapts the drill bit to provide a diametrally enlarged bore. The follower generally comprises a cylindrical section having a diametral slot therein in which the blade end of the bit is received. The well-bottom of the diametral slot includes a tapered socket in which the nose of the bit is received, the nose of the bit extending beyond the bottom wall of the cylindrical section. A means is provided for releasably mounting the follower on the drill bit. A bore in the work piece to be drilled is initiated by the nose of the bit extending through the follower thereon. As the nose penetrates into the work piece, the follower diametrally enlarges the bore provided thereby.

Abstract: A cutting head adapted to be manually operated is positioned in relation to a worn bearing so that when the cutting head is rotated with pressure applied in the axial direction against the bearing. The head advances axially along the bearing while rotating and shaves or machines away the worn bearing surface so that a new sleeve may be fitted over the machined surface to provide a new bearing surface of the same diameter and position as the original bearing surface prior to its wearing. In one form the cutting tool is mounted on a spindle inserted into the hollow of the bearing for machining an exterior bearing surface. In another embodiment, the cutting head is on a shaft inserted through the bearing for centering the head. In still another embodiment the cutting head is arranged to advance within a hollow bearing to machine an inside bearing surface. In all embodiments provision is made for stopping the advancement of the cutting head when the proper axial length of bearing surface has been machined.

Abstract: A boring bar has a free end that extends beyond the boring tool and has a guide roller rotatably mounted on the free end about an axis which is parallel to and offset from the boring bar axis. A guide bushing is supported in concentric alignment with the free end of the boring bar and rollably engages the guide roller at a point whose radius with respect to the boring bar axis extends in the same direction as the boring tool. The boring bar is preferably necked down between its supported end and the boring tool to facilitate deflection of the boring bar in response to pressure applied to the free end thereof by the guide roller and guide bushing.

Abstract: Guide means are provided to guide a boring bar to provide a concentric opening in a work piece. The boring bar is in the form of a hollow sleeve which is guided by a separable guide pin fixed to a work table and which telescopes into the sleeve as the boring bar moves into the work piece. In one embodiment, a guide element projects inwardly into the opening in the sleeve to engage the guide pin. In another embodiment a roller bearing has a portion of its periphery projecting through a slot in the boring bar into the interior of the sleeve to engage the telescoping guide pin. Use of the hollow boring bar and the telescopic guide pin minimizes the length which otherwise would be required for a boring bar with guide means.