Abstract: A method and apparatus for aligning and cutting pipes to extract and install piping in industrial plants is characterized by the use of lasers on a ring for aligning the cutting tool. By adjusting the ring so that beams from the lasers strike specified targets at a remote location corresponding with a pipe end, a cutting location is defined so that the trimmed end of a first pipe will properly align with a remote pipe. When the pipes welded together, their ends will match, thereby minimizing stress in the pipe. A cutting tool can be provided directly on the ring so that the pipe can be cut without removing the ring.

Abstract: A drywall cutting tool provides cuts in drywall material either parallel or perpendicular to a reference edge of the sheet, without repositioning the tool from the reference edge. The tool comprises a T square, with the head and stem portions immovably affixed to one another. The stem of the tool carries a slidably adjustable cutting body thereon, with the cutting body being secured through an elongate slot formed in the center of the stem portion of the device. The cutting body carries a pair of spaced apart cutting rollers or discs, and may be turned so the cutting axes of the two discs define a line either parallel or perpendicular to the reference edge of the sheet, and thus perpendicular or parallel to the stem of the tool.

Abstract: A Framing Speedsquare Attachment is disclosed. Also disclosed is an attachment that includes a segment for slidingly attaching a conventional Speedsquare thereto. The attachment further includes a telescoping extension having a measuring scale on its top surface. Interconnecting the first segment to the telescoping portion is a U-shaped segment that is configured to permit a conventional saw blade to pass through without cutting the attachment. The attachment may also include an anti-jam mechanism to prevent a stop member from pinching a board to be cut. As designed, the attachment provides the user with the ability to make repetitive cuts without the need to use an additional measuring tape nor needing to make cut demarcations on the board to be cut.

Abstract: A floating bench saw guide for guiding a portable circular saw along a workpiece while sawing the workpiece, has a cradle for retaining a portable circular saw, a saw plane across the cradle, and a guide lip movably affixed to the cradle. A pair of gage blocks are affixed to the cradle along the saw plane. The gage blocks are advantageous for allowing the use of a straight edge for easily positioning the blade of a circular saw along the saw plane. In another feature of the invention, a pair of spaced-apart parallel rails are affixed to the cradle. The guide lip is movably affixed to the rails and is reversible relative to the saw plane. The guide lip overhangs its mountings to the rails such that it is positional relative to the saw plane over a distance which is longer than the length of the rails.

Abstract: Prior power tool guides have not been successful as they have been awkward and inconvenient for a busy tradesperson to position on the workpiece. Those tool guides which have an integral gauge for measuring the required spacing between the guide and the tool cut in some cases may be readily used only for short cuts on narrow workpieces or must be held on the workpiece by hand. The present invention provides a saw guide which has an integral measuring gauge for locating the guide and an integral clamp which permits the guide to be quickly positioned and clamped on both narrow and wide workpieces.

Abstract: A guided cutting system including first and second blade cartridges which are used in association with templates. The blade cartridges each include a head and cover portions wherein the head portion includes a non-use end and a cutting end. The cutting end includes a pair of guide pegs and a cutting blade wherein the guide pegs are adapted to be received within a peripheral groove formed on a template. The cover portion is adapted to be attached to the non-use end of the head portion whereby the cover portion acts as a handle. The head portion may be attached over the cutting end to cover and prevent contact with the cutting blade. A different spacing is provided between the cutting blade and guide pegs for the first and second head portions for cropping a photograph and cutting a corresponding backing mat for the photograph.

Abstract: An jig for a hand-held saw having a powered blade includes a slotted trammel arm, one end of the arm being formed for fixably engaging a guide holder of the saw. A clamp assembly fixably locatable on the workpiece includes a frame having a planar, face member for contacting a face of the workpiece, a web member perpendicular to the face member for contacting an edge of the workpiece, the clamp assembly defining a pivot axis that is oriented perpendicular to the face member; a pivot member rotatably connected to the clamp assembly on the pivot axis and projecting from the face member opposite the a web member, the pivot member having a head portion and a shank portion that protrudes the slot of the arm.

Abstract: Paper handling apparatus, used in particular for sawing reels of paper, having a saw blade mountable on a carriage slide, a saw drive motor to drive the saw blade, a mechanism for mounting the carriage slide onto an object to be sawn, and a mechanism for moving the carriage slide across the surface of the object to be sawn so as to bring the saw blade into contact with the object to be sawn. The apparatus is suitable for cutting sheet material rolled around a cylindrical core and, due to its size and structure, can be transported to the object to be sawn and attached thereon.

Abstract: A safety ruler and guide used with a rotary cutter or the cutting tool for cutting fabric, the ruler designed to protect a user's first hand when holding the ruler on top of the fabric while the second hand is cutting the fabric with the cutting tool. The ruler has a vertical guard mounted exactly upright to a base guide, dividing the base equally into a first side and a second side. Each first side and second side display grids, ruler measurements and measuring scale to enable a right or left handed user to properly read and measure length and width of the fabric being cut. The first side and second side also include a ruler edge for measuring the length of fabric being cut, and serving as a guide and cutting edge for the rotary cutter. The user may then cut the fabric using the cutting tool without the cutting tool or fabric moving during cutting. In the event the cutting tool slips while cutting, the hand holding and applying pressure to the ruler is protected by the vertical guard.

Abstract: A portable guide for use with portable power tools such as saws and routers to assist in making straight cuts or grooves precisely located in panels or sheets by moving the tool along a planar side surface 64 of a guide bar 10. Clamp assemblies 20R and 20L secure the guide bar 10 to the workpiece and support the workpiece by clamping the workpiece on both sides of the line of cut via a tightening clamp screw 26 and planar clamp plate 28 that forcefully urge the workpiece into contact with an angle portion 66 of the frame 21 of the clamp assemblies 20R and 20L. The clamp assemblies 20R and 20L are designed to avoid interference between the clamp assemblies and the cutter portion of the power tool. A template 40 precisely locates the clamp assemblies relative to the line of cut. A lateral guide 30 may be attached to the tool without tool modification. The lateral guide 30 interacts slidably with the guide bar 10 and maintains engagement between the side surface 64 of the guide bar 10 and the power tool.

Abstract: The converter for converting a mechanical joint to a socket fusion joint includes a body having an inner surface, a stop disposed on the inner surface, and a fusion surface extending from the stop for a distance d1. The converter also includes a marker disposed on the outer surface for providing a reference location as to where the body can be severed to keep d1≧FM, wherein FM is the minimum fusion surface length allowable for the fusion socket joint. A method for repairing a leaking mechanical joint is provided which includes severing the mechanical coupling from the converter and the pipe. The method also includes performing a facing operation on the converter end surface to form a faced end such that the fusion surface extends between the faced end and a stop for an axial distance d1≧FM.

Abstract: A workbench holder system configured with a triangular notch in one corner. A cutting guide and a support bracket each have an upper horizontal component and a downwardly extending vertical component coupled to the stop piece. A piece of lumber may be brought in contact with the surface of the stop piece remote from the vertical component of the cutting guide and the lower surface of the horizontal component for the accurate cutting of the lumber.

Abstract: A portable saw guide and T-square and method of use where an accurate and straight saw cut is desirable. The T-square saw guide has an alignment arm and a flexible guide arm which can be quickly and accurately secured to a work piece such as a sheet of plywood by a clamping mechanism in order that a worker may use a guide edge of the T-square to accurately maneuver and guide a saw along a desired course despite variations in the surface of the work piece. The guide arm forms a flush linear contact between a surface of the workpiece and the saw guide to compensate for any non planar irregularities such as a bow, sag or warp in the work piece to cause continuous contact between the saw being guided along the guide edge of the T-square to produce a straight cut along the work piece.

Abstract: The present invention comprises additional embodiments in a circular saw aligning device which is not only easily releaseable but also entirely removeable from functioning engagement with either a specially made or prior art portable circular saw. An abutting assembly of the device rotates from an engaging position to a non-engaging position so the saw can be used without interference. This rotation is also the first step in removing the device entirely from the saw. The invention allows use of the circular saw when the saw blade is positioned at an acute angle with respect to the base plate. The invention also allows the user to easily and releasably lock the workpiece abutting piece out of the way.

Abstract: The present invention is a method and apparatus for scoring and marking sheet goods, particularly drywall or plasterboard. The apparatus is used in conjunction with a conventional T-square and consists of a clamp for locking the apparatus at a fixed position along the T-square blade and a scoring mechanism such as a utility-knife blade for scoring the sheet as the T-square slides along a straight edge thereof. The apparatus further includes a marking mechanism, aligned with the scoring mechanism so as to allow a user to optionally mark the sheet rather than scoring it.

Abstract: One side of an access panel is trimmed while an opposite side of the panel is secured in an opening between skin sheets on the underside of an aircraft wing. The trimming apparatus includes a frame secured to one of the skin sheets with a rail extending along an edge of the opening and a trim saw assembly slideable along the rail. The frame can be secured in position by several vacuum cups, and can include index flanges engageable against an edge of the opening for precise positioning of the rail and the trim saw assembly carried thereby.

Abstract: A receiver/controller unit (14) of a remote convenience system (10) receives an electromagnetic signal (18). The signal (18) is comprised of a plurality of pulses that convey a remote convenience function request. In response to the receipt of the signal (18), the receiver/controller unit (14) causes performance of the requested function. The receiver/controller unit (14) has a comparator (82). A first input of the comparator (82) is connected to receive an electrical signal (78) with an electrical characteristic that varies to convey the remote convenience function request. A second input of the comparator (82) is connected to receive a signal 86 that has a threshold electrical characteristic value. Preferably, the electrical characteristic is voltage amplitude. An output of the comparator (82) provides a signal indicative of the occurrence of the electrical characteristic of the electrical signal (78) exceeding the threshold value, and that conveys the remote convenience function request.

Abstract: In an automatic cutting device for a boiler tube water wall, cost can be reduced significantly by exactly cutting position in a boiler tube water wall, and at the same time by operating four automatic cutting devices for a boiler tube water wall by one operator by making the cutting work full automatic, in order to decrease the manpower and labor cost and to significantly reduce the term of work.

Abstract: The present invention comprises a circular saw aligning device which is not only easily releaseable but also entirely removeable from functioning engagement with either a specially made or prior art portable circular saw. An abutting assembly of the device rotates from an engaging position to a non-engaging position so the saw can be used without interference. This rotation is also the first step in removing the device entirely from the saw.

Abstract: Waved-edge cutter which is co-used with a waved-edge mold plate. The waved-edge cutter includes a base seat, an adjustment bar, an upper cover, a blade seat, a blade bit, a restoring spring, an adjustment collar, a clip member, a fitting cap, a locating button and a locating screw. A front section of the adjustment bar is connected with the blade seat. The lower end of the blade seat is connected with the blade bit. The restoring spring is received in the blade seat. The upper end of the blade seat is locked with the adjustment collar. The clip member is received in the top of the adjustment collar which is fitted with the fitting cap. The middle or rear section of the adjustment bar rides on the adjustment channel of the base seat. One of the marks of the top face, which is identical to the sculptured mark of the waved-edge mold plate, is aligned with the standard point of the base seat. The locating screw is locked with the locating button to fix the adjustment bar.

Abstract: The dismounting device includes, in order that a fastening member is dismounted from a base material, the fastening member comprising a head and a body, the body being inserted into a fastening hole formed in a base material, the head contacting a peripheral edge of the fastening hole into a fastened state with the body, a cutting member for cutting a boundary region between the head and the body from the head toward the body to separate the head from the body, the cutting member removing the fastening member from the base material.

Abstract: An jig for a hand-held saw having a powered blade includes a slotted trammel arm, one end of the arm being formed for fixably engaging a guide holder of the saw. A clamp assembly fixably locatable on the workpiece includes a frame having a planar face member for contacting a face of the workpiece, an edge member perpendicular to the face member for contacting an edge of the workpiece, the clamp assembly defining a pivot axis that is oriented perpendicular to the face member; a pivot member rotatably connected to the clamp assembly on the pivot axis and projecting from the face member opposite the edge member, the pivot member having a head portion and a shank portion that protrudes the slot of the arm.

Abstract: A guide for a concrete cutting chain saw. The guide has multiple paired slots which receive a post of a bracket mounted to the chain saw. The slots provide multiple pivotal mounts for the chain saw. The chain saw is mounted on the guide with the post being received in a pair of slots. The multiple slots provide sequential pivotal mounts for moving the saw to complete the cut. The post is mountable on either end of the bracket so the guide may be mounted on either side of the cut line.

Abstract: An electric power cable sheath cutter for longitudinally slicing an outer metallic sheath of a power cable include a frame arranged to be clamped by clamps to each end of a selected longitudinal section of the power cable. A carriage, slidingly mounted to the frame, has rollers that embrace an outer surface of the power cable so that the carriage “floats” on the cable in use. A milling tool with its drive motor is supported on the carriage and is adjustable up and down to enable a depth to be chosen. As a result, the sheath is cut through and inner strands of the power cable are not damaged. The effective depth of the remote end of the cutting tool is controlled by operation of a first motor 20, and the carriage is driven along in use the frame by a second motor so that the cutter can operate automatically without close manual supervision.

Abstract: The present invention relates to a media cutting tool for use with a template. The apparatus of the present invention maintains proper alignment with a template through the use of a novel offset, rotating, cutting blade and guards against skipping along the cut as the apparatus is drawn around a template through the use of a novel guide mechanism which engages the template being traced. The present invention also employs a transparent handle for an improved view of the cutting area.

Abstract: An underwater apparatus for servicing subsea pipelines provides a telescoping frame which can be lowered to the vicinity of the pipeline. The frame has an open section so that it can straddle the pipeline and outer jacket and fixate itself releasably so that it can be selectively repositioned. A cutting apparatus is secured to a telescoping sub frame. The cutting structure can be rotated about the longitudinal axis of the sub frame, as well as advanced along the direction of the longitudinal axis of the frame due to the telescoping feature of the sub frame. The cutting structure can also be moved pivotally about an axis of rotation which is outside and generally perpendicular to the longitudinal axis of the pipe. Thus, combining the telescoping feature with the pivoting feature and the feature of being able to rotate about the longitudinal axis, a variety of different cuts can be made.

Abstract: A guided cutting system including first and second blade cartridges which are used in association with templates. The blade cartridges each include a head portion and cover portion wherein the head portion includes a non-use end and a cutting end. The cutting end includes a pair of guide pegs and a cutting blade wherein the guide pegs are adapted to be received within a peripheral groove formed on a template. The cover portion is adapted to be attached to the non-use end of the head portion whereby the cover portion acts as a handle for guiding the head portion during a cutting operation. Alternatively, the head portion may be attached over the cutting end of the head portion to cover and prevent contact with the cutting blade. A different spacing is provided between the cutting blade and guide pegs for the first and second head portions whereby one head portion may be used for cropping a photograph and the other head portion may be used for cutting a corresponding backing mat for the photograph.

Abstract: A magnetized craftsman's turntable apparatus has an armrest. A magnet is embedded in the rectangular turntable for holding the metal templet over a paper sheet. The craftsman's arm can be resting on the immovable armrest as the templet is rotated for cutting designs in the paper sheet.

Abstract: Cartons of the type used for domestic milk supply may be more readily opened if a portion of the ridge that extends above the wings of the carton is first severed between the wings and the heat sealed closure so that the severed portion of the ridge may be folded back from above the wings or removed by a further cut across the ridge to the first line of sever. The wings are then free to be folded back and pressed inward to open the carton to form a pouring lip. A device for opening cartons comprises a thin blade secured to a handle and hinged within a shrouded recess in a two-part housing. Handles act about the double action hinge to move the blade across the slot to sever a portion of the carton ridge positioned in the slot. A tongue (not shown) holds the device in alignment with the ridge to ensure that the severing is below the sealed portion of the ridge.

Abstract: A guided cutting system including first and second blade cartridges which are used in association with templates. The blade cartridges each include a head portion and cover portion wherein the head portion includes a non-use end and a cutting end. The cutting end includes a pair of guide pegs and a cutting blade wherein the guide pegs are adapted to be received within a peripheral groove formed on a template. The cover portion is adapted to be attached to the non-use end of the head portion whereby the cover portion acts as a handle for guiding the head portion during a cutting operation. Alternatively, the head portion may be attached over the cutting end of the head portion to cover and prevent contact with the cutting blade. A different spacing is provided between the cutting blade and guide pegs for the first and second head portions whereby one head portion may be used for cropping a photograph and the other head portion may be used for cutting a corresponding backing mat for the photograph.

Abstract: A cutting device is disclosed, comprising a rail attachable to a workface and defining a translational axis when attached thereto; a carriage mounted on the rail and adapted for constrained movement along the translational axis; a turret assembly attached to the carriage for movement therewith and adapted for rotation relative thereto about a pivot axis disposed normal to the translational axis; and a gripping assembly adapted to grip a chainsaw with a cutting plane defined by a cutting bar thereof oriented normal to the pivot axis, the gripping assembly being attached to the turret assembly for rotation therewith, while gripping the chainsaw, between a raised position, whereat the cutting bar is disposed frontwardly from the workface, and a lowered position, whereat the cutting bar intersects the workface. The carriage has two laterally spaced lugs having respective bores centred about the pivot axis.

Abstract: A method for precisely cutting a workpiece using a saw guide to guide a hand held power saw, the saw guide having a first upper sliding surface and an opposing flat lower surface connected by a first side surface, the first upper sliding surface being bounded on one side by an integral guide ridge, and bounded on the opposing side by a first side surface, provides for first customizing the saw guide to a power saw having a base plate with a side edge. The saw guide is customized by positioning the power saw with the base plate resting upon the first upper sliding surface and the side edge contacting the integral guide ridge, and sliding the power saw along the saw guide, thereby cutting off the first side surface and creating a side cutting surface having a lower cut indicating edge. Once customized, the saw guide can be used with the power saw to cut the workpiece, with the lower cut indicating edge indicating to the user precisely where the power saw will cut the workpiece.

Abstract: The present invention is an internal miter saw having an apparatus and a method for cutting multiple workpieces at the job site to predetermined correct lengths and predetermined correct mitered angles to form an inner mitered joint perimeter along an existing external frame. The internal miter saw of the invention accomplishes this by providing a frame which is adapted for mounting a movable saw blade above the frame at a fixed position.

Abstract: A method and apparatus for stopping or otherwise altering fluid flow in a pipeline at a desired location, originally without provisions to do so, and particularly suited for use with heavy wall pipes. The method and apparatus includes use of chip forming cutting tools that are carried in a circumferential orbit around the pipe within a housing assembled around the pipe. The cutting tools are progressively advanced into the wall of the pipe to cut two axially spaced circumferential grooves in the pipe wall. Thereafter, a shear plate with cutting edges coinciding with the grooves can be forced through the pipe to sever a coupon from it and thereby gain access and control over flow through it.

Abstract: An apparatus and method of using a power saw guide for use with a power saw having a sole plate with a fence-following surface spaced a set distance from a sawing plane of the power saw. The power saw guide comprising a long leg and a short leg that are mutually orthogonal legs defining an "L" shape. A permanently attached fence is located along the outer edge of each leg defining a sole-sliding edge to guide the fence-following surface of the saw. Each fence is located on opposite surfaces of the guide Opposite the sole-sliding edge of the fence, is a plank-contact edge that makes contact with plank edge and ensures the cutting of the plank is done perpendicular to the length. An apron gusset extends beyond the intersection of the legs in both mutually orthogonal directions. The apron gusset is aligned with the plank-contact edges of the fences. Since the set distance for each power saw is different, the apron gusset initially has a length that exceeds the set distance.

Abstract: A portable guide for use with portable power tools such as saws and routers to assist in making straight cuts or grooves precisely located in panels or sheets by moving the tool along a straight edged guide bar (10). Clamp assemblies (20R) (20L) secure said guide bar to the workpiece and support the workpiece by clamping on both sides of the line of cut. Means are provided to avoid interference between said clamp assemblies and the cutter. A template (40) precisely locates the clamp assemblies relative to the line of cut. A lateral guide (30) may be attached to the tool without tool modification. Said lateral guide interacts slidably with the guide bar (10) and prevents movement of the tool away from the intended line of cut.

Abstract: A cutting guide system for guiding a portable power saw across workpiece comprising a rectangular shaped guide plate. The guide plate includes an upwardly projecting rib member extending longitudinally along the guide plate between opposite front and rear ends for guiding the portable power saw through a straight cutting path. The guide plate further includes two T-shaped channels situated within the rib member adapted to slidably receive a pair of opposing clamping devices. The T-shaped channels extends longitudinally predetermined distance from the front and rear ends of the guide plate so as to permit the pair of opposing clamping devices to move longitudinally along the channel to engage against the opposing edges of the workpiece. Prior to the initial use of the guide plate, it is trimmed to size by a power saw guided by the rib member so as to specifically tailor the guide plate to the power saw with which was used to make the initial cut.

Abstract: A kit to sort out pills, tablets or capsules, which comprises a recessed support, a container-defining sheet designed to fit into the support, and a sealing sheet made of self-adhesive paper as having substantially the same dimension as the container-defining sheet, so as to close the same. Positioning elements are provided on the sealing sheet and on the support and/or the container-defining sheet in order to facilitate proper fixation of the sealing sheet on top of the container-defining sheet. A pill-sorting device made of two sliding panels with hollow bottomed recesses can be used to insert the pills into the containers of the container-defining sheet.

Abstract: The present invention is a saw guiding device for guiding a power saw when cutting a workpiece in the form of either a flat board or an I-beam. The saw guiding device comprises a base member which is to be disposed across end caps of an I-beam. A straight saw guiding surface of the base member is configured such that a power saw can be engaged therewith and slidably moved therealong to thereby guide the power saw in a straight line as it cuts the I-beam. The base member includes an upwardly facing saw supporting surface disposed adjacent the straight saw guiding surface. The upwardly facing saw supporting surface is constructed and arranged to support the power saw as it is engaged with and slidably moved along the straight saw guiding surface between the end caps of the I-beam. The base member has a workpiece edge engaging structure extending downwardly therefrom. A movable workpiece edge engaging structure is constructed and arranged to be moved through a range of operative positions.

Abstract: An apparatus for cutting running workpiece includes a cutter for cutting, while the workpiece is running, the workpiece continuously supplied to run in a direction, and a travel member secured to the cutter, movable along the workpiece in contact with the workpiece. Since the travel member movable along the workpiece in contact with the workpiece is secured to the cutter, the cutter can follow a workpiece which is straight, curving or curving with a changing curvature. The cutter can be supported to be two-dimensionally movable to cut the workpiece in any form.

Abstract: A guide tool for performing a work function step such as cutting or drawing a line along a workpiece including a guide plate having planar opposite sides, a longitudinal slot, a first straight guide edge substantially parallel with the slot, guide flanges along opposite sides of the slot defining a guide channel on a first side of the guide plate, and two clamps adapted for assembly with guide plate, the clamps having a first jaw including a guide member slidable along the guide plate channel and a second jaw extendable through the guide plate slot and a pressure plate for securing the clamps to a workpiece along opposite sides of the workpiece, and clamp handles formed integral with the jaws and spring biased apart to urge the jaws together for clamping the guide plate to the workpiece, and the clamp handles being positioned in spaced relation from the first side of the guide plate for ready access by a user from the first side of the guide plate when the clamps are assembled with the guide plate and the gui

Abstract: This invention is directed to a device designed to cut or score floor covering materials such as vinyl, linoleum, carpet and other sheet goods. The device has a metal base with a straight edge located on the front and rear portions of the meal base. Stabilizing members fixed to the top surface of the metal base provide a support for positioning pins which hold the metal base to the carpet. When cutting vinyl of linoleum floor coverings, the positioning pins are adjusted upward and the non-slip rubber coating on the bottom surface of the metal base prevents the straight edge from moving. A first guided track is fixed to the top surface of the metal base between the front portion of the metal base and the stabilizing members. The first guided; track has a channel designed to receive a cutting member. The cutting member has a vinyl knife or a carpet knife mounted to a second guided track. The cutting member is available in a right handed version and a left handed version.

Abstract: An improved conversion device for use with hand-held power tools having a rigid base portion firmly affixed to a work surface. An elongated arm is affixed to the base allowing the arm to slide longitudinally on the base and above the work surface for substantially the full length of the arm. A power tool is mounted to the distal end of the arm, the blade or other tool head of the power tool projecting downward through a hole in the arm. The arm can be adjusted and fixed in position to set the distance between the blade or other tool head and a side-facing guide surface on the base according to the dimension of a cut to be made in a work piece.

Abstract: A notch/chamfer guide has chamfer and trochlear recess cutting slots and a notch, corresponding to the intercondylar box of a femoral implant, with a removable notch slot attachment. With the notch slot attachment assembled to the cutting guide adjacent the notch, blade receiving slots are defined between the notch slot attachment and the inside walls of the notch. The slots provide control to the saw blade to prevent the blade from angling away from the notch walls and making imprecise cuts. The notch slot attachment is removable to allow easy access to the notch area so that a manual instrument such as an osteotome can be used for final removal of the notch bone and to facilitate the use of an oscillating saw in the chamfer slots of the guide. A U-shaped notch is provided for cutting a trochlear recess that will lie behind the anterior portion of the implanted knee component to receive the backside of the patellar track of the implant.

Abstract: A combination carpenter's square and saw guide, and a conversion kit for converting an existing carpenter's square to such combination, utilizes a standard L-shaped square with a channel mounted on each leg of the square and extended in the same direction so that the channels are each extended in the X or Y direction and are on opposite faces of the flat carpenter's square. A rod is axially slidably inserted into each channel, and the distal end of the rod is extended out beyond the corner of the square a distance equal to the distance between the sole plate of a circular hand saw and the plane of the blade, and fixed in this position. The resulting tool is a carpenter's square which also acts as a convenient saw guide, as the workman can back off the square until the tip of the rod aligns with a pencil mark made at the cut line, and use the square for a saw fence.

Abstract: The working bench has a bench face marked with parallel and equally spaced scales as checker. Each intersection point is formed with a through hole for fixing the alignment or the work piece so as to facilitate the cutting operation. The bench face is further formed with a dividing disc and a ruler with metric and British scales. The cutting rail alignment includes an engaging board, a clamp, a rail slat, a rail seat, lifting shafts and a rail seat support rod. The engaging board having a rotary shaft at one end for fitting into a central through hole of the dividing disc for selecting suitable direction. The clamp serves to clamp a free end of the engaging board so as to stably locate the engaging board by the selected direction. The width from the inner side of the saw blade of the circular saw to outer edge of the base of the circular saw is first measured and then the rail slat is fixed on the rail seat by the width.

Abstract: A circular hole cutting apparatus comprising a support frame, having a forward end, a rearward end, a lower end, and an upper end; the forward end forming a cutting bit mounting means, capable of rotatably retaining a cutting bit so that the upper end of the cutting bit may upwardly extend from the upper end of the support frame, and so that the lower end of such a cutting bit may downwardly extend from the lower end of the support frame; and the lower end of the support frame forming a radius arm mounting means, the radius arm mounting means being capable of adjustably retaining a radius arm, so that the rearward end of the radius arm may alternately extend rearwardly from the rearward end of the support frame and retract forwardly from positions rearward of the rearward end of the support frame.

Abstract: The traditional method of carving out an electrical outlet box opening in a log wall consists of chiselling after a series of closely spaced holes are drilled in the log. It is a time consuming and difficult undertaking. An apparatus for quickly and easily cutting a rectangular opening in a log wall is disclosed. The apparatus comprises: a saw jig, having a central opening, for mounting on an upright side of the log wall; a cutting drum having teeth around its periphery; drive means to revolve the cutting drum; and, a guide arm attached to the jig to guide the revolving drum into the central opening. Most preferably the drive means is a chain saw. A method of cutting a rectangular opening in a log wall comprises the following steps: mounting a jig having a central opening and a guide arm, on an upright side of the wall; and, guiding a revolving drum having teeth on its periphery through the central opening into the wall using the guide arm on the jig.

Abstract: A cutting apparatus in one form comprises a base attachable to one surface of a sheet of drywall or the like. An elongate blade assembly is rotatably attached to the base to permit blade assembly rotation along the drywall. A cutting blade is attached to the distal end of the support member to cut into the drywall along a circular profile as the blade assembly is rotated. An advancer interconnects the base and the blade assembly along which the blade is advanced deeper into the drywall sheet as the blade assembly is rotated. The advancer may be a threaded shaft extending from the base onto which the blade assembly is rotatably threaded, so that the progressive advancement is proportional to the rotation of the blade assembly.

Abstract: A cutting guide is provided, comprising a first clamping member having a first surface adapted to contact a pipe; a second clamping member having a second surface adapted to contact the pipe; a connecting device operatively disposed between the first clamping member and the second clamping member for connecting and urging the first and second clamping members toward one another to grip the pipe; and a cutting guide member, preferably a cylindrical member, attached to the second clamping member for slidably retaining and guiding a flexible cutting member in contact with the pipe. The first and second surfaces which contact the pipe are preferably contoured to approximate the shape of the pipe. Also preferably, the bottom surfaces of both the first and second clamping members are coplanar during operation of the cutting guide. Optionally, a recess is formed into the first clamping member which is adapted to receive a reducing member for contacting smaller sizes of pipe.