Abstract: A clamp for a drill press includes a perpendicular support which can be attached to the quill of the drill press. The perpendicular support holds a compression spring which in turn is connected to an extension having a foot for engaging the work piece. As the quill is moved toward the work piece, the foot engages the work piece and the spring exerts a holding force during the drilling operation.

Abstract: The present invention is an improved loose tenon joint with multiple arculate mortise surfaces and similarly configured loose tenon member for woodworking applications. A jig is provided arranged to be secured to a workpiece where the jig axially guides a drill bit for boring a series of adjoining holes forming a mortise. The first jig embodiment manipulates a slidable guide bar maintaining longitudinally spaced drill guide holes and two index holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece. A second series of holes are bored (completing the mortise) after the drill guide is translated and secured to the second index hole. A second embodiment is provided including a stationary jig body arranged to be secured to a workpiece. An elongated opening in the jig body supports a drill guide with longitudinally spaced drill guide holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece.

Abstract: This invention provides a system for using a portable tool for assisting the making of holes in installed pipes, such as water pipes and the like, to prepare for interconnected piping. Such system preferably utilizes a hole saw guide bushing which is contained in a clamp-head at the end of the fixed jaw of a "Vise-Grip.TM."-like device. Such clamp-head accommodates various sizes of guide bushings and hole-saws for making various size holes in various size pipes. Other features assist accurate hole positioning, e.g., horizontal and vertical levels, center marks, and V-shaped holding surfaces on the clamp-heads.

Abstract: A universal drill guide (10) comprising a base (12) being a frame-like configuration having a large central opening. A pair of elongated columns (14) are provided. A structure (16) is for pivotally mounting lower ends of the elongated columns (14) parallel to opposite sides of the base (12), so that the elongated columns (14) can go from upright positions to angled positions. A cross slide (18) rides upon the elongated columns (14). A bearing spindle assembly (20) is rotatively carried centrally within the cross slide (18). A guide chuck (22) is connected to the bearing spindle assembly (20) above the base (12). An adjustable cradle (24) is affixed to the cross slide (18) to hold an electric drill (26) in a stationary position, so that the drill chuck (28) can engage with the bearing spindle assembly (20) above the cross slide (18). A facility (30) is between the cross slide (18) and the elongated columns (14), for moving the cross slide (18) up and down on the elongated columns (14).

Abstract: A holding fixture for use in drilling pocket joints in a workpiece with a drill bit which includes a work table having a transverse rail and a transverse slot near the front side, a toggle clamp fixed to the work table to hold down the workpiece, a fixed guide member fixedly secured to the work table between the transverse rail and the transverse slot near one end, and a movable guide member supported on the work table and moved along the transverse rail and the horizontal sliding rod and horizontal locating sliding bar of the fixed guide member, each of the guide members having a top head, a bottom base supported on the work table, an oblique through hole through the top head, a back open space at the back side between the top head and the bottom base in communication with the oblique through hole for receiving wood chips from the workpiece during drilling, a guide sleeve fixedly mounted in the oblique through hole for guiding the drill bit, and a smoothly curved notch on the bottom base for supporting and g

Abstract: A door drilling fixture for drilling a long straight longitudinal hole in a door. The fixture includes an elongated frame having a U-shaped cross-section for mounting about the hinged edge of a door and an arm projecting from and pivotally engaged to the frame for guiding a long drill bit. The door is placed between the right and left sections and the door edge flat against the center section of the U-shaped frame. Two hold-down bolts thread through upper and lower portions of the left section of the U-shaped frame to press the door against the right section of the U-shaped frame. Slots in the frame mechanically isolate the upper and lower portions of the left section from the middle portion of the center section. The arm houses two spaced apart drill bushings having a center line for rotationally engaging and guiding the drill bit through the drill bit aperture and into the edge of a door.

Abstract: A tool for aligning a portable boring bar for reboring of a bore at a location relative to a further bore including at least first and second "H"-shaped rigid guide members that are hingedly connected to permit their outboard ends to be selectively spaced apart. Each guide member includes first and second side members adapted to be disposed on opposite surfaces of an equipment component which is to be rebored, each side member for the first guide member having an outboard end designed to be aligned with a first bore, and each of the side members of the second guide member being designed to be aligned with a further bore spaced apart from the first bore. The tool serves as an alignment tool and/or as a mount for the drive unit of a portable boring bar.

Abstract: The present invention is a jig which allows drilling sites to be located on a workpiece by the user simply locating the lengthwise points along the edge of the workpiece. The jig then marks the offset distance of the drilling site away from the longitudinal axis of the workpiece without the user having to make a secondary measurement to locate the point. The drilling site may be marked by a punch or a scribe at this point or the hole may actually be drilled using a drill bit. The jig contains an appropriate guide for assuring that the mark or the hole is centered at the precise location. The drill jig additionally allows holes to be drilled at angles in a face or along the edge of the workpiece using a vee block accessory. This vee block accessory allows holes to be located along the length of a workpiece lacking a planar face, such as a dowel. The vee in the block cradles the workpiece along its length so that a consistent longitudinal axis is defined.

Abstract: A device and method for boring pocket-holes in frame members having a miter joint to prepare them for final assembly. Two frame members are placed on the positioning frame of the invention and clamped against the positioning frame and together at the miter joint with a moveable clamp, which has a clamp member having resilient clamping pads to contact the face surfaces of the picture frame members. The clamp member also includes a guide assembly which causes the clamping pads to apply clamping force to each of the frame members to hold them securely and to urge them together at the miter joint. A drill assembly supports a drill bit and carries the drill bit along a path to drill a pocket-hole having a centerline passing through the frame member on the first surface, passing obliquely across the miter joint and into the frame member on the second surface.

Abstract: A drill press including a vertically disposed support post and a pivot assembly supported upon the support post is disclosed. A table is supported on the pivot assembly. The pivot assembly is pivotable about a first substantially horizontal axis, with the table pivoting about the first horizontal axis jointly with the pivot assembly. The table also is pivotable relative to the pivot assembly about a second substantially horizontal axis. The pivot assembly also may be pivoted around a vertical axis defined by the post and may be raised and lowered along the vertical post. A clamp plate is adjustably secured to the table and a telescoping extension arm is fixably secured relative to the table by the clamp plate. A guide fence is slidably disposable along the upper surface of the table and may be secured at various locations. A clamp may be adjustably secured either directly to the table or to the guide fence to vertically clamp a workpiece on the table.

Abstract: A drilling apparatus for drilling a worn and/or damaged tap hole refractory liner sleeve from a tap hole nozzle of an oxygen blown steelmaking vessel, the apparatus including an elongated, hollow boom structure with an elongated drill shaft rotatably disposed within the boom structure, motor means for rotating the drill shaft and moving it in both directions within the boom structure, and a clamp means at the outer end of the boom structure adapted to attach the outer end of the boom structure to the tap hole nozzle in an accurate, axially aligned position. A drill bit for use with the above drilling apparatus comprises a plurality of conventional rock drill bits attached to a base plate equally spaced in a pair of concentric circular arrangement around an axis of the base plate.

Abstract: A drill guide apparatus for lens workpieces, having a substantially C-shaped base and threaded screw member, is provided. The drill guide apparatus includes a threaded aperture through the C-shaped base member for receiving the threaded screw member to clamp the drill guide apparatus to a lens workpiece. The screw member includes an axial bore through its entire length. An exit aperture is provided on an opposing side of the C-shaped base member for aligning the drill guide apparatus on a pre-marked spot on the lens workpiece. With the drill guide apparatus clamped in place, accurate drilling can be achieved without damaging the workpiece.

Abstract: A motorized case trimmer is disclosed having a lever operated case holder and a motor driven trimming blade. The motor and blade are slidably mounted upon rails for quick and easy movement to provide sufficient clearance for loading a case into the case holder. A motor handle further simplifies the movement of the blade and motor whereby a simple one-step motion of the handle moves the blade and motor and locks them into a retracted position. Releasing the motor handle, permits the motor and blade to slide freely along the rails under urging by a pair of springs. The components of the case trimmer are mounted upon an elongate platform that permits adjustability of the position of the components for accommodating various size cases and for adjusting the cutting force of the blade against the cartridge case.

Abstract: A fixture including a clamp having a pair of opposing clamp members, one clamp member being releasably secured to a guide. In the preferred embodiment, one of the clamp members includes a circular disc that matingly engages a pocket formed in the guide. The clamp is releasably secured to the guide by a movable retainer that extends to engage and retain the circular disc when it is received in the pocket. When the retainer is moved out of engagement with the circular disc, the clamp may be removed from the pocket and used in other applications requiring a clamp.

Abstract: Apparatus for facilitating drilling or similar machining operations upon a workpiece, the apparatus including a vertically directed vee shaped recess (15) for interchangeably receiving and centring tool guide arrangements (18) for the tools required to be used for machining the workpiece; and means (19) for cramping a selected tool guide arrangement (18) against the mutually inclined faces of the vee shaped recess (15); and with a vee shaped recess (14) whose apex (17) is directed transversely of the apex (16) of the vee shaped recess (15) and intersects the apex (16) of the vee shaped recess; a workpiece support means (26) mounted for displacement towards and away from the vee shaped recess (14) in such manner that a workpiece (27) placed upon the workpiece support means (26) can be brought into firm contact with the faces of the vee shaped recess (14), and means for positionally locating a workpiece upon the workpiece support means (26).

Abstract: A drill press assembly having a base mountable to a work bench, a vertical column attached to the base and a drill head assembly having an electric motor and a quill. The drill head assembly is movably attached to the column. A rack is rotatably attached to the top of the column and is engaged by a crank and pinion mechanism attached to the frame of the drill head assembly which permits the drill head assembly to be displaced vertically and rotated about the column. A tilt table is attachable to the base of the drill press. A locking mechanism having a bolt passing through a longitudinal slot in the supporting base of the tilt table and a transverse slot in the base is engaged by an eccentrically mounted camshaft to lock the supporting base of the tilt table to the top surface of the drill press base. A pivoting frame is pivotably attached to the supporting base and contains a table plate. A fence is attachable to the top of the pivoting frame.

Abstract: Drill for drilling rails and track rigs, in railroad applications, including a body which supports a motor driving a drilling tool through a reduction unit. Elements are provided for the translatory motion of the drilling tool with respect to the body. There are also elements for removably fixing the body with respect to the element to be drilled.

Abstract: An apparatus and method for aligning flexible printing plates and for accurately drilling pin register holes therein includes a three-way adjustable table top assembly which can be selectively adjusted in X and Y directions and rotated about an axis. A pneumatic clamp is positioned on the table top assembly for clamping a pre-marked flexible printing plate to be drilled in place thereon. A movable stereomicroscope viewer is slidable above the table top assembly to view the flexible plate for position adjustment via the adjustable table top assembly. A drill assembly is also positionable over each location at which a pin register hole is to be drilled. The drill assembly includes a movable hollow core drill bit surrounding a stationary rod. Once the flexible plate is aligned via the viewer, the drill assembly is sequentially positioned above the flexible plate at each point to be drilled with a pin register hole and operated to drill each hole therein.

Abstract: A member is disposed against a motor vehicle wheel at a position near the center of a bore for receiving the wheel axle. The member may be a collet expansible radially against the annular wall defining the central bore. Alternatively, a ring may be moved into concentric relationship with the central bore and then disposed against the back side of the wheel. Clamping members are then moved, preferably axially and rotationally, against the wheel front side at a position near the wheel periphery. A snubber ring is thereafter moved against the wheel back side, preferably at a position corresponding radially to the positions of the clamping members against the wheel. Each member at the wheel periphery may be moved by introducing hydraulic fluid into an individual one of a plurality of cylinders to move a piston coupled to such member.

Abstract: This invention relates to a portable apparatus designed to facilitate the task of locating and drilling of the holes specified on shop drawings for metal plates, structural shapes and non-round tubes. It can be equipped with one or more powered drilling tools. Equipped with two such tools, the apparatus will weigh less than 60 pounds. It can drill one hole at a time or two holes simultaneously; and it is not limited by the length, width, or weight of the workpiece.

Abstract: An end effector adapted for attachment to and accurate positioning by a robot is provided for positioning a right angle shaped workpiece at a desired position against a panel and drilling a pair of accurately located positioning holes through the workpiece and the panel. The end effector includes a rear plate having a conventional tool connector and adapter that can be grasped and manipulated by the robot. A frame is cantilevered on the rear plate and supports a shuttle mounted on horizontal linear bearings for lateral motion of the shuttle. A pair of vertical bearings on the shuttle supports two horizontal support plates for vertical motion on the shuttle. A drill and an inserter are mounted on the support plates for lateral motion with the shuttle, and for vertical motion on the shuttle.

Abstract: A drill bit guiding device includes an end block, a mounting block, a pair of parallel guide rods between the end block and the mounting block, a slide member and a pushing screw. The end block has a flat end face and a plurality of through-holes formed perpendicularly through the flat end face. The slide member is mounted between the end block and the mounting block and integrally has a first portion passed perpendicularly through by the guide rods, and a second portion disposed parallel to the guide rods. The slide member further has a plurality of through-holes formed through the second portion, each corresponding to a respective one of the through-holes of the end block, and an axis transverse to an axis of the corresponding one of the through-holes in the end block. The pushing screw passes threadedly and perpendicularly through the mounting block and has a first end portion provided with an abutting member which moves towards or away from the slide member upon rotation of the pushing screw.

Abstract: A drill guiding device is used to guide axial movement of a drill when forming a hole in a workpiece and includes a clamping assembly and a guide block. The clamping assembly includes a stationary clamping block, a pair of guide shafts which extend horizontally from the stationary clamping block and which have first end portions mounted removably on the stationary clamping block, a threaded shaft parallel to the guide shafts and provided with a head portion which is mounted rotatably to the stationary clamping block and a threaded shank portion which extends axially from the head portion, a movable clamping block mounted slidably on second end portions of the guide shafts and provided with a threaded hole to engage threadedly the threaded shank portion of the threaded shaft, and a mounting block mounted slidably on the guide shafts and disposed between and parallel to the stationary and movable clamping blocks.

Abstract: A vise transport for milling machines and comprised of articulated inner and outer lever arms, the inner lever arm received in an adapter socket secured to the milling machine, and the outer lever arm universally carrying a vise support, the articulating axes of the inner and outer lever arms being vertical and parallel and the axes of the vise support being vertical and horizontal for manipulating positions of the vise and its alignment with the milling machine table to which it is mounted, there being an adapter plate for safe attachment of the vice to the vise support.

Abstract: A tube end preparing apparatus for precisely preparing the ends of tubes, including bent tubes. The apparatus includes a reference mechanism, a tube clamping mechanism, a cutting mechanism, and cutting head control mechanisms. The reference mechanism and tube clamping mechanism combine to precisely locate a flow tube with respect to defined reference indicia. The entire locating and clamping process not only provides accuracy and symmetry in aligning and clamping the flow tube relative to the desired reference indicia but can be accurately repeated with speed. The cutting mechanism includes a rotating cutting head mounted for longitudinal movement on a carriage. A control system controls the feeding movement of the carriage as the cutting head nears the end of the flow tube. A first stop mechanism causes a plunger to contact a micro-switch to stop the longitudinal movement of the carriage. A second stop uses a hard stop to prevent the carriage from overtravel due to momentum.

Abstract: A work holder is provided for modifying an automatic transmission such that clutch pistons within the automatic transmission receive a unidirectional valve therethrough rather than the associated clutch drum as is typically the case. The work holder includes a base with a horizontal upper surface having a central disk which is sized to fit and retain one clutch piston to the base when the central disk is in one orientation and another clutch piston when the central disk is in another orientation. With the clutch piston securely attached to the work holder, a drill bit guide mounted on the work holder directs a stepped drill bit so that it may bore a hole through the clutch piston for passage of hydraulic fluid therethrough. Two drill bit guides are provided, one for each clutch piston, which each direct one of two of the drill bits to the appropriate location. Once the holes are drilled in each clutch piston a check ball and seat combination are located within each hole thus made.

Abstract: A drill press assembly including a spindle supported by a column and base, a work table and an adjustable fence assembly. The adjustable fence assembly includes clamping means permitting the fence to be adjustably mounted on the column of the drill press. The fence includes a vertically oriented planar surface. Clamping means permit the planar surface to be adjusted in an infinite number of vertical and horizontal positions thereby to facilitate positioning of a workpiece for precise drilling operations. A V-block may be mounted to the fence to facilitate drilling into the end of a cylindrical workpiece.

Abstract: A drill bit guiding device is used to guide axial movement of a drill bit when forming holes in a workpiece and includes an end block, a pair of guide shafts, a plurality of guide blocks and a positioning block. Each of the guide shafts is mounted removably on the end block and the positioning block in such a manner that the guide shafts are parallel to one another and extend between the end and positioning blocks. One of the guide shafts is formed with a graduated line that is marked off in units of length. The guide blocks are mounted slidably on the guide shafts and are parallel to the end block. Each of the guide blocks is formed with a single vertically extending hole in a direction that is transverse to axes of the guide shafts. The vertically extending hole receives a corresponding tubular guide sleeve therein. The guide sleeve permits extension of the drill bit thereinto. The guide blocks are locked releasably at desired positions on the guide shafts.

Abstract: A gun jig including first and second templates defining first and second end surfaces, a first substantially planar surface extending between the first and second end surfaces, a second substantially planar surface oriented substantially perpendicular to the first planar surface and extending between the first and second end surfaces, a first recessed surface extending between the first and second end surfaces, a first plurality of guide holes extending between the first planar surface and the first recessed surface, a second plurality of guide holes extending between the second planar surface and the first recessed surface, a first connecting surface extending between the first and second end surfaces and joining the first planar surface and the first recessed surface, and a second connecting surface extending between the first and second end surfaces and joining the second planar surface and the first recessed surface.

Abstract: An index-locator pin passes through an aligned hole formed through a drill plate and juxtaposed pack-up and is displaced by a power fastener tool. A gauge pin is transversely positioned within the index-locator pin and pushes the pack-up against a drill plate in response to displacement of the index-locator pin. By maintaining the drill plate in clamping relationship against a multi-layer pack-up, a hole pattern in the drill plate may be replicated in the pack-up with high precision.

Abstract: A drill guide apparatus for enabling the accurate drilling of holes in a door for the installation of a door handle assembly or lock comprises a generally U-shaped member sized to fit around the edge of a conventional door into which holes are to be drilled for the installation of the door handle assembly or lock. A C-type clamp is included for rigidly clamping the U-shaped member to the edge of said door in the region to be drilled. A drill bushing is installed through a region of the U-shaped member in a location enabling, when the apparatus is clamped to the edge of the door, the guiding a drill for drilling a hole into the edge of the door. A plurality of side plates is provided, each of which has a plurality of drill guide apertures or bushings arranged in relative locations for guiding the drilling of holes through the door for the installation of a particular type of door handle assembly or lock.

Abstract: An template positioning jig. In a preferred embodiment, a deformable member is used which is deformed inwardly along a first axis such that it bulges or otherwise deforms outwardly along a second axis, until contacting the sides of a cavity, whereupon it tends to center itself within the cavity. An operably associated template is likewise centered or otherwise positioned as desired relative to the cavity.

Abstract: A machine tool is received in a structure that is carried along with the tool and has a sleeve extension which will be received in a tapered element with radially spreadibly tongues having end beads which will lodge behind a shoulder in teplate thereby positioning and clamping the tool; the receiver is additionally urged against the template and the tool by a piston cylinder drive.

Abstract: A portable apparatus for fitting hinges and a door lock set to a door and door jamb assembly prior to installing the door and door jamb assembly in a building. The apparatus includes a main work unit which aligns the door with the door jamb and additionally provides an adjustable hinge template holder which allows for the routing of a recess for a hinge. The apparatus further includes a pair of end vices for attachment to the ends of the door jamb which maintain the door and door jamb in position when moving the main work unit. The end vices also provide a routing guide for the header component.

Abstract: The invention relates to an attachment piece designed to fit onto conventional bushing tools in order to securely hold a worn spring barrel of a clock for a bushing operation. The attachment piece comprises a plate, a pair of clamps, and a pair of cross pieces that are secured onto the spring barrel through the use of the clamps. The plate is a flat surface that is capable of being secured to the conventional clamps now in use on state-of-the-art clock bushing tools.

Abstract: The invention relates to a drilling apparatus that can position a drill at the precise center between two overlapping flanges and clamp at that position while a self feeding drill drills a hole.

Abstract: A vertical support post mounts a drill head thereon, wherein the drill head is reciprocatable relative to the post to effect drilling of holes within paper stacks mounted upon a reciprocating table orthogonally oriented relative to the post positioned below the drill head. A reciprocating table is mounted upon a plurality of rollers, wherein the table may be positioned relative to the rollers utilizing a plurality of adjustable stop members operative in association with a stop guide mounted to a rear edge flange of the table. A clamp member is pivotally mounted over the table to secure a paper stack thereon for a drilling procedure.

Abstract: A drill press clamp having a collar which may be removably and adjustably mounted on the column of a drill press. A first arm is pivotally connected to the collar at a first end, with the second free end of the first arm pivotally mounting a second arm at a first end of the second arm. The free second end of the second arm includes a screw extending therethrough which may be employed as a clamp to secure a work piece between the drill press table and the second end of the second arm. The pivotal arrangement of the arms allows the clamp at the end thereof to be located at any point above the table. Additionally, the collar may be located at different positions along the column, to allow for work pieces of different sizes. The device may be adapted for use on a standard work table, without a drill press. The present invention also includes the use of clamp blocks having various contours cut therein.

Abstract: A method and apparatus for removing metal from a workpiece so as to form an incomplete hole therein is disclosed. The tool includes a shank having a plurality of cutting inserts adjustably attached to one end thereof. The cutting inserts are axially spaced apart from one another along the tool shank by a predetermined distance which is greater than the thickness of the workpiece. The first cutting insert functions as a drill or end mill to form a rough incomplete hole through the workpiece, while the second cutting insert functions as a boring tool to finish the incomplete hole. An opposite end of the tool shank is retained within a bore formed in a tool holder. The tool holder is supported within a conventional rotational means, such as a lathe. Both the opposite end of the tool shank and the bore formed in the tool holder are formed eccentrically to provide maximum flexibility in adjusting the rotational axis of the cutting inserts and, therefore, the diameter of the incomplete hole being formed.

Abstract: A hand tool useful in forming a pocket mortise in the surface of a workpiece proximate an edge of the workpiece. The hand tool includes a clamping assembly for releasably clamping the tool to the workpiece, and a router carried by the clamp assembly and mounted for manual displacement toward the workpiece edge at an incline to progressively cut deeper into the workpiece and form an inclined pocket mortise. The hand tool also preferably carries a drill bit guide on the clamp assembly which is formed to receive and guide a drill bit from a hand drill for drilling a bore from the workpiece edge to the mortise. A method of forming a pocket mortise including the steps of clamping the clamp assembly with a movable router to a workpiece, routing the pocket mortise and then drilling a hole to the pocket mortise from the edge of the workpiece by a hand drill also is described.

Abstract: A portable system for reworking the inside diameter of heavy oil field casing, and especially casing that has irregularities on the inner surface thereof that render the casing unsuitable for use in deep wells. A cutting head assembly is rotated as it is forced into the interior of a joint of casing. The cutting head assembly includes a mandrel which turns a special cutting device having a plurality of cutters for engaging and cutting the inner wall of the pipe as the entire cutterhead is forced to travel through the pipe. Alignment members attached to the mandrel on either side of the cutting device maintain the longitudinal axis of the cutters in proper alignment to produce the desired new pipe inside diameter. After the first half of the pipe is sized or trued, the joint of casing is reversed and the other half is cut to the same new desired inside diameter. Included in the system is a special grinder for reworking pipe having only marginal imperfections.

Abstract: A drilling jig for staircase rails includes a base plate having a first block fixed thereto and a second block adjustably mounted thereon. Rotatably adjustable drill guides with bushings are provided on the first and second blocks to permit adjustment of the guides to a predetermined angle to the base plate. A demountable section of the base plate can be removed to permit drilling of a rail at a point close to an obstruction, such as a knule post. A third block is adjustably disposed on said demountable base plate section and include an adjustable aligning pin guide. The jig is preferably part of a kit which includes a set of drill bits of various sizes, each bit having an elongated shank of the same diameter adapted to fit the bushings of the drill guides. The jig kit further includes a set of aligning pins sized to match the drill bits, the pins having a common shank size to fit the third block aligning pin guide.

Abstract: An apparatus for retaining a tile in a secure position to prevent rotation while an opening is drilled through the tile. The apparatus includes a surface having a multiplicity of concentric interior stepped depressions, each interior depression set beneath and within another, with each respective depression sized to be slightly larger than the standard dimensions of a conventional tile. The respective depression can be used to securely hold its respective sized conventional tile while a transverse force is applied to the tile to create an opening through the tile.

Abstract: A holding fixture for drilling pocket joints with a stepped drill bit. The fixture includes an L-shaped body member having a guide leg that carries an angularly disposed drill guide channel and a clamp leg that supports a clamping mechanism for securing a wooden workpiece flush against the planar surface of the guide leg. The drill guide channel has an upper stop flange and a lower end that terminates flush with the planar surface of the guide leg at a point spaced above the junction of the guide leg and the clamp leg. The stepped drill bit is secured in the chuck of a portable drill and an adjustable stop collar is positioned on the bit. The stop collar engages the stop flange so that the end of the bit is prevented from contacting the surface of the clamp leg. The wooden workpiece is secured flush to the planar surface of the guide leg by the clamp and the pocket and pilot hole are drilled.

Abstract: A portable system for reworking the inside diameter of heavy oil field casing, and especially casing that has irregularities on the inner surface thereof that render the casing unsuitable for use in deep wells. A cutting head assembly is rotated as it is forced into the interior of a joint of casing. The cutting head assembly includes a mandrel which turns a special cutting device having a plurality of cutters of engaging and cutting the inner wall of the pipe as the entire cutterhead is forced to travel through the pipe. Alignment members attached to the mandrel on either side of the cutting device maintain the longitudinal axis of the cutters in proper alignment to produce the desired new pipe inside diameter. After the first half of the pipe is sized or trued, the joint of casing is reversed and the other half is cut to the same new desired inside diameter.

Abstract: A drill tool is mounted to a robotic arm and is capable of operating in limited access space. The drill is driven by a motor shaft capable of exhibiting simultaneous linear and rotational motion. A right angle drill head is slidably mounted to a support and is driven by the motor shaft so that the drill bit moves toward a work piece while it rotates. A cylinder-driven clamp has its jaws coaxially aligned with a drill bit and is capable of clamping several pieces together, the latter constituting a work piece. One of the clamp jaws has a bushing which serves as both a drill guide and a clamp jaw.

Abstract: A drilling machine for drilling holes in the ends of rails for a railway track to receive fishplate bolts, has a base 12 on which is provided a former 20 adapted to the profile of the rail 10. A clamping jaw 18 is connected by a clamping mechanism 16 for clamping the base 12 to the rail. An electric drill 20 is slidably supported on a column 14 on the base 12. An annular hole cutter 26 on the drill spindle 24 drills a hole through the web 40 of the rail 10. The former 30 accurately locates the drilling axis laterally with respect to the rail 10 and a respective end of the former 30 can be aligned with the rail end when clamping the machine to the rail in order that the drill axis will be accurately located longitudinally of the rail.

Abstract: An apparatus for tapping live pipes includes an adaptor for affixing to a pipe, the adaptor including a valve for closing off any opening cut into the pipe. The internal drive shaft has a plurality of transverse apertures spaced apart along its length, so that it can be adjusted longitudinally to different positions with respect to the apparatus which grips the drive shaft and urges it toward the pipe during cutting. This avoids the necessity of designing a plurality of apparatuses which are adapted to cutting bits and devices of different lengths.

Abstract: A drill spindle (62) is carried by the forward end of an elongated gear housing (12, 14). A parallel drive shaft (84) is carried by the housing (12, 14) rearwardly of the spindle (62). A parallel lead screw (92) is positioned between the spindle (62) and drive shaft (84) and is attached to a workpiece-engaging foot (20). A plurality of gears transmit rotation of the drive shaft (84) to the spindle (62) and lead screw (92). Two leader pins (182) are attached to the foot (20) and engaged by bearings (186) carried by the housing (12, 14) to slide freely relative thereto and to provide stiffness between the housing (12, 14) and the foot (20). The leader pins are spaced laterally and rearwardly from the drive shaft (84). A fluid activated pusher member (30) cooperates with the foot (20) to wedge the forward end of the drill (10) in a recessed work area. A fluid operated dog clutch (124, 132) engages rotation of the lead screw (92).

Abstract: A drill alignment apparatus for a drill adapted for osteoplastic surgery comprises an alignment rod mounted thereto and a clamp element. The alignment rod is parallel to and disposed a predetermined distance (D) from a shaft of the drill. The clamp element includes an aperture which permits passage of the rod. The clamp element is adapted to be affixed to a bone, such as a femur, so that the aperture is displaced from the central axis of the bone by substantially the same distance which the center axis of the alignment rod is displaced from the center axis of the drill shaft. When drilling is commenced, the forward end of the alignment rod is placed within the aperture of the clamp element. As drilling progresses, the rod passes through the aperture, thereby ensuring that drilling occurs along a predetermined drilling path extending along the bone axis.