Abstract: A miter attachment capable of use on radial saws, table saws, drill presses, router tables, and the like, comprises three legs of a triangle. The longest leg constitutes an elongated base member. This base member is pivotally attached at one end to a fence member. The base member has a track in it for engagement by a slider, which is capable of movement along at least a portion of the length of the base member. The slider is pivotally attached to one end of a coupler arm, the other end of which is pivotally attached to the fence member at a point spaced from the end pivotally attached to the base member. As the slider is moved to different relative positions along the length of the base member, the coupler arm causes the angle between the fence and the base member to change.

Abstract: A slide-type circular saw includes a turntable rotatable relative to a base, and includes a saw unit having a saw blade mounted thereon. The saw unit is slidably movable relative to the turntable by a plurality of slide bars extending in parallel with each other. A slide bar mounting mechanism includes a first mounting mechanism for fixedly mounting the saw unit to the slide bars and a second mounting mechanism for slidably mounting the slide bars on the turntable. One of the first and second mounting mechanisms is non-adjustable with respect to the positional relationship between the slide bars, while the other is adjustable with respect to the positional relationship between the slide bars.

Abstract: A wood cutting device for safely and easily cutting wood veneer strips into geometric shapes for use in parquetry with high precision. The device includes a rigid base having a top surface, a blade handle rotationally attached to the top surface of the base, a cutting blade affixed to the blade handle, and a strip guide attached to the top surface of the base. The cutting device preferably also includes a strip stop attached to the top surface of the base. The device may be pre-set or adjusted to a particular configuration for repeatedly cutting identical geometric shapes with high precision.

Abstract: A workpiece-supporting fence has a pair of movable fences movably attached to a fixed fence which is secured to a base of the device in which the fence is being used. The pair of movable fences are located on opposite sides of a working tool such as a saw blade. A fixed clamping arrangement is associated with each movable fence and provides a single point actuation member for each movable fence to clamp the movable fence to the fixed fence such that the movable fence is vertically aligned and flush with the fixed fence. In one embodiment, each movable fence is provided with a gap-filling flap which is pivotably secured to the movable fence to be movable between a lower and an upper position. In its lower position, the gap-filling flap minimizes the gap between the movable fence and the working tool. In its upper position, the gap-filling flap provides additional support when working with taller or thicker workpieces.

Abstract: A desk-top circular saw has a main fence mounted on a turntable. The main fence has right and left fence sections and a curved section connecting the two fence sections. The fence sections are bolted down to respective side portions of a base. The fence sections have right and left main guide surfaces disposed at right angles relative to the top surface of the turntable. The right main guide surface has approximately a rectangular shape while the left main guide surface has a portion cut in two steps descending toward a blade slit in order to avoid interference with the locus of the saw blade assembly when tilted. An auxiliary fence is pivotally attached to the rear side of the left fence section. The auxiliary fence includes an auxiliary guide surface located on the same plane as the left main guide surface and a slide portion set backward off the aforementioned plane so as to be slidable with the rear surface of the left fence section in pivoting.

Abstract: This invention pertains to a method and for cutting an intermediate article of manufacture, the intermediate article of manufacture being a cord reinforced elastomeric laminate. The laminate when cut to length, becomes a carcass for a pneumatic tire. The laminate is cut by a cutting element at angles .theta. greater than 60.degree. relative to a normal plane (NP) perpendicular to a cord reinforced ply of the laminate and parallel to the cords to thereby create large substantially flat planar splice surfaces without significant deformation or precuring of the unvulcanized elastomeric materials. To facilitate this cut, the relative position of the cutting element and the ply is changed to an angle .beta., .beta. being less than .theta.. The ply is cut a short distance, at the angle .beta., to position the cutting element between two parallel cords. Then the cutting element is reoriented to the angle .theta. to complete the cut.

Abstract: This invention pertains to a method and for cutting an intermediate article of manufacture, the intermediate article of manufacture being a cord reinforced elastomeric laminate. The laminate, when cut to length, becoming a carcass for a pneumatic tire. The laminate is cut by a cutting element at angles .theta. greater than 60.degree. relative to a normal plane (NP) perpendicular to a cord reinforced ply of the laminate and parallel to the cords to thereby create large substantially flat planar splice surfaces without significant deformation or precuring of the unvulcanized elastomeric materials. To facilitate this cut, the relative position of the cutting element and the ply is changed to an angle .beta., .beta. being less than .theta.. The ply is cut a short distance, at the angle .beta., to position the cutting element between two parallel cords. Then the cutting element is reoriented to the angle .theta. to complete the cut.

Abstract: An angularly adjustable table saw jig which comprises a base plate having an upper flat surface for supporting a work piece to be cut, a means for slidably attaching the jig to a table cutting tool, an upwardly extending work advancing abutment rotatably connected to the base plate at an axis of rotation for advancing work into cutting engagement with a table cutting blade, and a slot extending generally parallel to a cutting path of the cutting blade for providing clearance for the cutting blade as the jig is advanced into cutting engagement therewith. The jig also includes an elongated guide rail, which is rotatably connected to the base plate, and whose axis of rotation lies in the same plane of the cutting blade.

Abstract: A process for preparing tubular coupons formed of a pair of tube lengths butt-welded together with a full depth circumferential weld includes partially diagonally cutting the coupon sample through its transverse dimension so as to leave a thin bending strip along one wall of the coupon about which the coupon is bent for inspection of the internal surface of the weld area. Two procedures are described, both of which leave the interior surface of the weld exposed adjacent the diagonal cutting line through the coupon. The procedure facilitates bending open the cut coupon for internal inspection of the weld area. A jig fixture for holding the coupon during cutting by a band saw blade is described.

Abstract: Miter joint cutting apparatus includes a base, and an adjusting member mounted on the base for relative sliding movement to a position along the direction of a saw line. A workpiece locating mechanism is mounted on the base for angular adjustment with respect to the saw line, and includes a pair of elongate guide boxes wherein each box has a lower lateral wall parallel to the base for supporting a workpiece with a forward end of the wall pivoted to the adjusting member, and a vertical wall extending from the lower wall. The lateral wall is coupled to the base via a projection which slides in a lateral slot in the base, as the guide box is moved by operation of the adjusting member.

Abstract: A bevel table saw 10 comprising a table 14 supported by a frame 12, the table 14 defining a slot 16 for a saw blade 44, and a blade assembly 30 mounted to the frame 12 below the table 14 such that, in use, a saw blade 44 of the blade assembly 30 protrudes through the slot 16 to cut workpieces on the table 14, wherein the depth of cut of the saw blade 44 is adjusted automatically when bevel cuts are made in a workpiece. As a result, clashing of the blade assembly 30 with the underside of the table 14 or the frame 12 is automatically avoided, thereby simplifying use of the table saw 10 during the making of bevel cuts.

Abstract: A locking fence for a power tool such as a chop saw, or for a work surface of a workbench, is capable of being moved to a selected location on the chop saw base or work surface and oriented at a selected angular orientation relative to the chop saw blade. The fence is locked simultaneously in such location and orientation when an operator rotates a cam actuator to lift a first clamping member away from the fence, which in turn draws a second clamping member into clamping engagement with the underside of a workpiece support of the base, and which further forces a cam portion of the actuator against the fence. No tools are required to lock or unlock the fence. The fence defines an arcuate slot for enabling the angular orientation to be adjusted. The arcuate slot is maintained in juxtaposition to a slot formed in the work surface for enabling movement of the fence to its selected location on the workpiece support or work surface, by linking screws linking the slots.

Abstract: A compound miter box is provided wherein the saw guides are pivotable about a vertical and a horizontal axis. Each saw guide includes a retaining mount having a concave bearing surface defining a locating tab thereon. A saw supporting arm is pivotally mounted to the underside of the saw bench. The arm includes a plurality of tab receiving depressions therein. Each tab receiving depression corresponds to a predetermined angle between the saw guides and the saw bench. A user may then select and secure the locating tab in a tab receiving depression corresponding to the desired predetermined angle between the saw guides and the work supporting surface of the bench.

Abstract: A saw guide is provided for use with a hand held circular power saw thereby enabling a user to selectively cut either a 90 or 45 degree cut through a construction member such as a 2.times.4. The saw guide is adapted to be used with either a 2.times.4, 2.times.6, 2.times.8, 2.times.10, or a 2.times.12. The saw guide has a first saw guide edge, a second saw guide edge and a wood guide edge. The saw guide also has two adjustable pencil guide edges which are internal to the saw guide. The pencil guide edges are situated so that they are parallel to the first and second saw guide edges. The pencil guide edges are movably mounted within the saw guide so that they can be adjusted so to the width of a given power saw's foot. This allows the user to automatically account for this foot width when using the saw guide to cut a desired length of construction member. The saw guide also is designed to allow the user to easily clamp it to a board. Thus, the user does not have to use one hand to keep the saw guide in place.

Abstract: A miter box assembly includes a miter box having a flat base and upwardly projecting side walls with slots in the side walls for receiving a saw blade. The miter box includes a forwardly projecting flange with a first aperture therethrough and a rearwardly projecting flange with a second aperture therethrough, the first and second apertures aligned along a central longitudinal axis of the box. A pin depends from the bottom of the box and is located along the longitudinal axis of the box and preferably spaced farther from the first aperture than from the second aperture. A base plate having first and second perpendicular axes ascribed on the upper surface thereof includes a plurality of pivot apertures aligned along the second axis for pivotally receiving the pivot pin on the bottom of the miter box.

Abstract: A miter saw includes a support mechanism for supporting a miter saw unit relative to a base in such a manner that the miter saw unit is both vertically and laterally pivotable. A position determining mechanism serves to selectively determine the position of the saw unit at any of positions including a vertical position where a saw blade is positioned substantially vertically relative to the base, and leftward and rightward pivoted positions where the saw blade is inclined laterally leftwardly and laterally rightwardly from the vertical position by a predetermined angle, respectively. The position determining mechanism includes movable side stopper members and fixed side stopper members on which the movable side stopper members abut, respectively. The movable side stopper members are mounted on a movable member which pivots laterally with the miter saw unit. The fixed side stopper members are mounted on a fixed member which is non-laterally pivotally movably mounted on the base.

Abstract: A guide apparatus for cutting roofing shingles includes a rigid base plate, substantially rectangular in shape, having a first end wall spaced from a second end wall; a first side wall spaced from a second side wall; a cutting guide pivotally supported on the base plate along the first side wall; and upright guide surfaces mounted for sliding movement on the base plate adjacent to the second side wall. The cutting guide may be fixed at non-perpendicular and perpendicular angles to the long axis of the base plate. A scale having reference markings for cutting shingles at predetermined lengths is mounted along the first side wall. The scale may be utilized to determine points at which the beginning and the end of a cut can occur both easily and accurately. A modification of the invention includes an outward extension of the base plate along the first side wall, the extension having an opening within it, the combination serving as a carrying handle for the guide apparatus.

Abstract: A chop saw comprising a table, pivot member, saw assembly, upper guard, lower guard and lever utilizes the lever to maintain the position of the upper guard and lock the saw assembly in the upper rest position by engaging the lower guard with an extension of the lever. Disengagement of the lever from the lower guard, and pivoting of the saw assembly to the lower engaged position causes the lever to re-engage the lower guard to further open the lower guard and expose the blade.

Abstract: A compound miter saw with an adjustable/bypassable bevel stop is disclosed. The compound miter saw includes a turntable rotatably mounted on a supporting frame. A power driven saw blade is pivotally mounted to the turntable and moves along a predetermined path from an upper raised to a lower operational position that includes a saw blade slot in the turntable. A bevel adjusting features selectively rotates the power driven saw blade relative to the turntable. The adjustable/bypassable bevel stop includes predetermined bevel stop settings at set angles, for example, such as 0.degree. and 45.degree., as well as an over-riding feature when angles either less than or greater than the predetermined bevel stop settings are desired. The over-riding feature does not require re-adjustment of the predetermined bevel stop settings.

Abstract: A method and apparatus are provided for cutting a decorative groove in a matboard. The matboard is positioned adjacent a guide. A carrier is adapted to be moved along the guide with two blades oriented in separate planes which intersect each other and which lie at an oblique angle relative to the matboard. One of the blades is inserted into the matboard at a selected first depth. The carrier is moved along the guide for a predetermined length of travel to make a first cut in the matboard defining a first side of the groove. The blade is then retracted. Then the other blade is next inserted into the matboard to a selected depth at least intersecting the first cut. The carrier is then moved back to the initial location to make a second cut in the matboard defining a second side of the groove. In a preferred embodiment, the tips of the blades are offset from each other relative to the length of the groove.

Abstract: A miter saw includes a support mechanism for supporting a miter saw unit relative to a base in such a manner that the miter saw unit is both vertically and laterally pivotable. A position determining mechanism serves to selectively determine the position of the saw unit at any of positions including a vertical position where a saw blade is positioned substantially vertically relative to the base, and leftward and rightward pivoted positions where the saw blade is inclined laterally leftwardly and laterally rightwardly from the vertical position by a predetermined angle, respectively. The position determining mechanism includes movable side stopper members and fixed side stopper members on which the movable side stopper members abut, respectively. The movable side stopper members are mounted on a movable member which pivots laterally with the miter saw unit. The fixed side stopper members are mounted on a fixed member which is non-laterally pivotally movably mounted on the base.

Abstract: An adjustable panel cutter including a table for supporting the workpiece horizontally, semi-vertically or vertically, a guide frame mounted for pivotal movement at a lower end thereof with respect to the table and a cutting tool carriage slidably received on the guide frame. A power cutting tool is mounted in the cutting tool carriage. The guide frame is moveable angularly across the plane of the table following an arcuate slot in the table in which a guide and locking pin, attached at an upper end of the guide frame, is attached. A quick locking and release mechanism is operatively connected to the guide and locking pin to allow an operator to easily set the guide frame and cutting tool at a desired angle.

Abstract: A cutting device to cross cut through an elongate rigid polymeric plastic foam panel member to produce a beveled end to produce depth matting for framing pictures, the device having a base platform with a horizontal support surface to support the panel member on a lengthwise edge, a vertical wall with a vertical slot angled horizontally at a forty-five degree angle extending through the vertical wall and downwardly through the support surface, a slide member guided in a vertical direction to which a knife is attached extending through the vertical slot to a knife guide to provide horizontal support for the blade, and a lever to move the slide member up and down to force the knife to cut the panel member.

Abstract: An elongated cutting table has a guide bar assembly pivotally connected thereto which is rotatable to change the cutting angle. The pivoting arrangement acts to retain a fixed point adjacent the rearward side of the table on the cutting path defined by the guide bar assembly at all times, while retaining a forward edge of the table in proximity to a safety shield disposed on the guide bar assembly forwardly of the forward edge. The cutting table is particularly adapted for use in sawing long, thin work such as siding.

Abstract: A compound miter jig apparatus includes a base unit and a plurality of connectors for connecting the base unit to an article to be cut. A pair of pivot support assemblies arc connected to the base unit. The pivot support assemblies are spaced apart from each other on the base unit and include longitudinally adjustable first pivot elements. A bearing block assembly is supported by the first pivot elements and is located between the first pivot elements. The bearing block assembly includes a pair of second pivot elements in contact with the first pivot elements. The bearing block assembly also includes a shaft bearing assembly. A shaft assembly is supported by the shaft bearing assembly. The shaft assembly includes a chain-saw-connector assembly. An adjustable tilt-lock assembly is supported by the base unit and is connected to the bearing block assembly for locking the bearing block assembly at a predetermined angular tilt.

Abstract: A double-sided miter box for a panel saw machine tool has two interconnected contact rails which can be moved relative to a driven tool. The contact rails are pivotable about a rotation axis. An electrical measurement transducer system which may include a magnetically coded tape and a non-contact sensor, which measures and displays the pivoting cycle of the contact rails.

Abstract: A circular saw unit includes a base having a work support device for supporting a work. A turntable is rotatably mounted on the base. A cutting mechanism is adapted for cutting the work placed on the work support device. The work support device includes at least one work support member pivotally mounted on the base around a pivotal axis substantially parallel to a rotational axis of the turntable. The work support member has an upper surface for placing the work thereon.

Abstract: A miter box is provided with a simple demountable and adjustable board stop which operates in conjunction with the horizontal upper edge of the miter box backstop to position a board, such as a piece of cove molding, in an acute vertical angular position with respect to the miter box table which allows the board to be cut at the compound angle required for a mitered butt joint in which the cut pieces are mounted at the same relative angle in which they are positioned in the miter box. The box also includes a simple frictional locking mechanism to set the pivotable saw carriage in any selected horizontal angular position over the full range provided by the miter box.

Abstract: A slide plate is attached to a support member which is supported on a work bench for pivotal motion about a longitudinal axis. The slide plate is pivotally attached to such support member through a coupler to which a resilient vertical torquing force is applied by means of a spring member. This resilient force urges the slide plate pivotally upwardly to an angular position against a stop member where it is retained except when downward pressure is exerted thereagainst, as in sawing. The slide plate has an aperture therein such that a circular saw can be fitted in the aperture and slidably moved along the slide plate in performing a sawing operation. The slide plate support member is mounted on a work bench which has a fence member thereon for stopping the downward travel of the slide plate to provide a space between the slide plate and the work bench for the piece to be sawed.

Abstract: A reversible mat cutter for cutting openings in oversized picture frame mats is disclosed. In one aspect of the invention, the guide rod and mat bar are easily detachable from the clamping frame of the mat cutter. Once detached, the cutter head assembly is then easily removed, reversed and remounted on the guide rod such that the cutter head then cuts on the opposite side of the guide rod. Both the mat guide and squaring arm are both quickly and easily detached from one side of the guide bar and remountable on the other side so that then an oversized picture mat may then be lain flat on the mat cutter and cut with the reversed cutter head.

Abstract: A cove base cutting guide provides a stable guide for holding a cove of soft material, such as rubber or synthetic rubber, achieved in a bottom, top, ends and front and back sides with a cove-shaped chamber within, the integrity of the guide breached only by fully-contained slits on the front side within the front side and by a narrow opening the size and shape of a cove base in the ends for receiving and discharging a cove end piece cut from cove stock in the guide. To maintain the knife in alignment within the slit, the guide includes a chamber groove opposite each slit into which the end of the knife passes. The front slitted side is thin such that a conventional utility knife of length typically only about 1-inch reaches from the front side through the chamber into the guide grooves. In an alternative embodiment, a stabilizing block is attached to the guide back side to maintain guide structural stability when the chamber grooves are extended as slits through the guide back side and stabilizing block.

Abstract: A guide for cutting a truss joist I-beam with a hand-held power saw such as a worm drive, hypoid drive, or circular saw is disclosed. The guide comprises a base positionable along a top surface and an inner edge of one chord of the I-beam, a mechanism mounted on the base for securely holding the base to the chord, and a cutting guide pivotally mounted on the base for guiding a hand-held power saw at a selected angle in cutting the I-beam. The holding mechanism includes a handle extending from the base and a pivot arm pivotally coupled to the base. The pivot arm has a gripping end for contacting the chord and a pivot handle for pulling upwardly toward the handle for causing the gripping end to pivot into contact with the chord.

Abstract: An operating handle for a cutting device includes a handle body adapted to be mounted securely on the saw carrier of the device; a switch installed on the handle body and adapted to be activated to drive a cutting saw carried by the carrier; a trigger member mounted swingably on the handle body; a switch driving piece mounted swingably on the handle body and biased to locate at a predetermined position adjacent to the trigger member, the trigger member being capable of being rotated in a first direction so as to rotate the switch driving piece in a second direction opposite to the first direction, thereby activating the switch to drive the saw; and a lock unit releasably locking the switch driving piece on the handle body to prevent the switch driving piece from rotation in the second direction.

Abstract: A workpiece support table forms a platform supporting a chop saw and workpieces at a convenient elevation for cutting metallic workpieces to length by an inverted channel member forming an elongated workpiece support which is transversely intersected by a recessed box-like member supporting the base of a chop saw in the plane of the workpiece surface. Triple legs depending in downward diverging relation from respective forward and rearward sides of the channel member supports the table on even or uneven surfaces and a horizontally pivoting arm guides workpieces in angular relation with respect to the vertical plane of a chop saw rotary blade moving toward and away from the workpiece table surface.

Abstract: A power-controlled sawing machine provided with a clamping and angle-adjusting mechanism and a safety alignment mechanism. The clamping and angle-adjusting mechanism consists of first and second clamping plates to clamp an object to be cut therebetween. The second clamping plate further effects the adjustment of the angular position of the second clamping plate relative to the sawing direction. The safety alignment mechanism includes a stop plate which can be moved and turned to align with the second clamping plate so as to prevent a cut piece from bouncing out and injuring people.

Abstract: A portable saw table which comprises an elongated saw table and a saw track pivotally mounted therebetween for a rotation about an axis substantially perpendicular to a longitudinal axis of the table base. A saw slide mounted on the saw track and supports a portable saw. A support at each end of the saw table allows the portable saw table to be tilted relative to the supports about a second axis parallel to the axis of the table. A sector member is pivotally connected to the table base so that as the table base is tilted, the sector member is moved in a plane perpendicular to the axis of the saw table. The sector member provides stability and guides the table and saw track. Thus, the table base, saw track and sector member can be tilted relative to the supports while the saw track is allowed to pivot relative to the table base and the sector member. A locking device on the supports engages the sector member to lock the saw table in a tilted position.

Abstract: A chop saw comprising a base table (1, 3), a pivot block (11) attached to the base table (3), a pivot member (21) mounted on the pivot block (11) for relative motion therebetween and a saw blade (15) mounted on the pivot member (21) for movement towards and away from the base table (1, 3) to cut a workpiece positioned on the base table (1, 3), wherein a dust extraction passage (74, 75, 76) for enabling a suction apparatus to extract dust from the base table (1, 3) passes through the pivot block (11) and the pivot member (21). Such an arrangement is neat and compact, and yet provides an efficient dust removal facility.

Abstract: A miter saw includes a support mechanism for supporting a miter saw unit relative to a base in such a manner that the miter saw unit is both vertically and laterally pivotable. A position determining mechanism serves to selectively determine the position of the saw unit at any of positions including a vertical position where a saw blade is positioned substantially vertically relative to the base, and leftward and rightward pivoted positions where the saw blade is inclined laterally leftwardly and laterally rightwardly from the vertical position by a predetermined angle, respectively. The position determining mechanism includes movable side stopper members and fixed side stopper members on which the movable side stopper members abut, respectively. The movable side stopper members are mounted on a movable member which pivots laterally with the miter saw unit. The fixed side stopper members are mounted on a fixed member which is non-laterally pivotally movably mounted on the base.

Abstract: A saw guide for hand-held circular saws that aids the saw user in making straight cross and angled cuts. The guide utilizes a slotted saw track upon which the circular saw rests the base of the saw aligning flush against side walls of the track. The saw track is initially elevated above the workpiece by a spring loaded track support member and is brought in contact with the workpiece under a nominal downward force supplied by the saw user. Once the track is in contact with the workpiece, the saw is pushed along the track, its blade cutting through the underlying workpiece through a slot in the track, the track returning to its elevated position after the cut is completed. The track support member also employs a rotational coupling device with which the saw track may be locked in various angular positions relative to the workpiece for use when making angled cuts.

Abstract: A desk-top miter saw with a bevel function is improved through the use of a belt drive transmission between the saw shaft and the motor drive shaft. This allows the unit to be more compact while simultaneously offering a greater bevel tilt range of the saw. A centering detent mechanism is used to correctly locate the turntable for zero-angle (non bevel) cutting.

Abstract: A push-pull DIY cutter for sheet material, such as mat and foam board, utilizes a blade-mounting handle that is pivotable from a null position in both of two opposite directions, so as to alternatively bring into operative position a blade element spaced to either side of the null position center line. The blade is mounted for lateral shifting, so as to cause the elements on its opposite ends to protrude to a greater or lesser extent from either side of the cutting head. Indicia are provided along the lower boundary of the head to facilitate adjustment of the blade for optimal protrusion of the blade element that is to be utilized in any given instance.

Abstract: A portable saw table comprising a saw track pivotally supported on a saw table. A protractor is mounted on the saw track and an indicator-indexer plate is mounted on the saw table. A hand operated locking mechanism is provided. The saw table includes laterally extensible side members and longitudinally extending end members.

Abstract: A desk-top slide type circular power saw has a cutter device which is capable of performing a slant cutting and movable back and forth. The saw includes a base, a turntable rotatably mounted on the base, a pair of bearings formed in the turntable, a pair of thrust shafts supported by the bearings to be movable back and forth in an axial direction, a first holder mounted on one end of the thrust bearings, the first holder having a first engagement portion in the form of an arcuate shape, a second holder provided with a second engagement portion engageable with the first engagement portion to be slidable relative to the first engagement portion, and a coupling member for coupling the first and second holders with each other. The cutter device is mounted on the second holder to be swingable.

Abstract: A portable saw table comprising a saw track pivotally supported on a saw table for guiding a slide plate on which a portable power saw having a rotary blade is mounted for guiding the saw as it is moved along the track to cut a workpiece. An adjustable mounting assembly supports the portable saw in a plurality of angularly adjusted positions such that the plane of the saw blade is at an angle to the slide plate and the periphery of the cutting edge of the saw blade is maintained substantially in the same kerf line in the saw table that supports the workpiece at substantially the same depth in each of the adjusted positions. The mounting assembly also supports the saw for use in a saw chopping mode.

Abstract: A guide for use in cutting carpet and a method of joining two portions of cut carpet in edge-to-edge relationship has a base formed as a lower portion and an upper portion interengaged through a longitudinal slideway and presenting an upper ramp surface. The upper portion has a longitudinal channel along which a knife blade can pass to cut a carpet portion laid on the ramp. The lower portion has a vertical wall vertically below the channel and against which the cut edge of first carpet portion is located to abut during cutting of the second carpet portion on the ramp so that when the guide is removed the two cut edges will fall into edge-to-edge abutment for joining together.

Abstract: A new and improved miter apparatus includes a base plate assembly which includes a front end, two sides, and a rear end. The base plate assembly includes a slot at the front end midway between the two side members for receiving a saw blade. A track assembly is located between the rear end and the slot on the base plate assembly. A carriage assembly is supported by the track assembly. The carriage assembly is capable of being moved back and forth along the track assembly. The carriage assembly includes a first pivot assembly and a second pivot assembly supported by the base plate assembly at a position between the track assembly and the slot on the base plate assembly. A pair of miter arms are pivotally connected to the second pivot assembly. The miter arms include respective third pivot assemblies supported by the miter arms.

Abstract: A miter saw includes a base on which a work is placed. A miter saw unit supports a saw blade and has a motor for rotatably driving the saw blade. A support mechanism is provided supporting the miter saw unit relative to the base in such a manner that the miter saw unit is laterally leftwardly and rightwardly pivotable from a vertical position. A biasing member is interposed between the miter saw unit and the base for biasing the miter saw unit in a direction opposite to at least one of the directions of the lateral pivotal movement of the miter saw unit when the miter saw unit is laterally pivoted.

Abstract: A system for cutting windows or openings in mats used in framing works of art. The system involves the use of a variably positionable head to which a cutting blade is attached for cutting a beveled edge in the mat. A longitudinal drive means, transverse drive means, and orthogonal drive form a combined positioning device capable of moving the head in any direction. A rotational drive means may also form part of the combined positioning device for rotating and adjusting the position of the blade. A linear variable displacement transducer is coupled to the head and operatively coupled to the orthogonal drive to maintain the head a constant distance away from the mat so the blade cuts a continuously smooth beveled edge in the mat.

Abstract: A releasable locking device for acting between a first member 5 and a second member 3, the two members 3,5 being held against relative motion when the device is in its locking position (FIG. 1) and being free to move relative to each other when the device is in its release position (FIG. 2), the locking device comprising a flanged pin 7 for passing through the first member 5 and engaging a second member 3 and releasable means 17 for acting between the flange 15 of the pin 7 and the first member 5 to drive the first member 5 towards the second member 3 until relative motion between the first and second members 3,5 is prevented. The locking device is particularly suitable for locking a round table 5 and a fixed table 3 of a circular saw base table 1 together when a saw cut is to be made.

Abstract: A guide for a mitre saw is described which includes a base having a face with a first side edge, a second side edge, a first edge and a second edge. A guide member is pivotally mounted to the face of the base. The guide member can be locked to the base in a preselected angular position. A telescopic member is secured to the guide member for co-axial telescopic movement. The telescopic member has a mounting pin. A ruler having an elongate mounting slot is telescopically received on the mounting pin. The ruler is movable relative to the mounting pin toward the first side edge and the second side edge of the base within limits defined by the elongate mounting slot. The ruler can be locked to the telescopic member such that the positioning of the telescopic member determines the position of the ruler relative to the first edge and the second edge of the base.