Abstract: A router attachment which is particularly useful for cutting decorative slots or grooves in wood and/or other materials, particularly those decorative cuts that are present in dentil moulding(s).

Abstract: This invention provides a guide for hand held power tools for use in cutting sheet material and the like, comprising a T-square having a straight edge adapted to abut the edge of sheet material and an arm extending normal thereto across the sheet material having a hinged base plate capable of being fastened at adjustable locations along the arm at measured dimensions from the straight edge. Power tools, such as circular saws or routers, may be mounted on the base plate which is pivotal between a raised position in which the power tool is out of engagement with the sheet material and a lower position in which the cutting tool engages the material.

Abstract: An assembly and method for cutting through a cast of the type having flexible wrapping and a rigid outer shell. The assembly comprises a side plate having edges defining an elongate notch for receiving the cast, a cutting blade rotatably mounted on the side plate adjacent the notch, and means for rotating the cutting blade relative to the side plate. The edges of the side plate defining the notch include at least one cutting portion. The cutting blade is maintained in sliding scissors-like engagement with the cutting portion of the side plate to shear the cast between the cutting portion and the cutting blade as the blade is rotated.

Abstract: A router attachment which is particularly useful for cutting the slots to receive standard biscuits used in biscuit joinery.

Abstract: A removal skid plate for use on a saw for cutting wet concrete. The portion of the skid plate in contact with the concrete has a slot therein through which a rotating cutting blade extends to cut a groove in the concrete. At a leading, cutting edge of the slot, a ceramic insert is placed in the skid plate to inhibit wear adjacent the cutting edge of the blade. The insert is removable and held by a resilient means which can vary the force exerted between the insert and the concrete surface being cut in order to minimize any undesirable markings which the insert might exert on the concrete surface.

Abstract: A portable power driven horizontally reciprocating saw for cutting door jambs or door casings having a saw blade secured to an assembly plate which is slideably receivable in a second assembly plate mounted in a horizontal plane for the horizontal reciprocation of the saw blade.

Abstract: The chain saw and guide assembly 10 includes two pairs of guide plates 14 and 15 mounted to the guide bar 12. The pairs of guide plates are spaced from each other and are used to engage guide surfaces (FIGS. 5, 6 and 8) as the center span of the saw chain 13 cuts a work product.

Abstract: A hand held circular saw rip guide that is attached to a planar base and includes a movable cross member that is disposed about the planar base. An cross member extension serves as a straight-edge to guide the skill saw in operation. An upper surface of the planar base has a graduated series of indicia that represents feet and inches, or any suitable scale, to provide the operator with a tool for measuring the work piece and in combination with the movable cross member allows the operator to measure and cut any desired dimension in the work piece.

Abstract: A metal skin trimming device which cuts an edge of a first metal skin to a net shape that is complementary to the edge of a second metal skin that has been previously attached to a frame, such as the airframe of an aircraft fuselage. A guide carried by the device is adjustable to set the gap that will appear between the edges of the first and second metal skins when they are attached as by riveting to the airframe.

Abstract: A guide device for hand-held machine tools includes a foot plate in which a guide rail, provided with a parallel guide, can be clamped. The foot plate has guide openings in its edge portions. The guide rail is insertable into these openings. The clamping device is displaceable on the guide rail and can be clamped to the latter. The clamping device includes a clamping element with an overhanging clamping projection, which is engageable with the edge portion of the foot plate, and a clamping bolt for clamping the clamping element to the guide rail. The clamping bolt can be moved out from the narrow space between the foot plate and the machine housing and can be easily accessible.

Abstract: A reciprocating blade cutting device wherein a reciprocating chuck and blade combination locates the cutting edge of the blade at the forward most point of the housing. Guide surfaces are provided and extend rearwardly from this forward most point along each side of the housing. The guide surfaces are adapted to engage a wall and to guide the saw blade for cutting alongside the wall. The chuck is adapted to fix the saw blade between either of two positions required for directional cutting as established by the two guide surfaces.

Abstract: A guiding arrangement for a hand saw includes a support located below the saw housing, a guiding strip adjustably connected to the support and a guiding rail secured to the guiding strip. The guiding rail extends normal to the guiding strip and serves as a guide for a saw when the blade of the latter makes straight parallel cuts. The guiding rail has at least one projection formed with two openings for selectively receiving a centering pin utilized in operation when the saw blade makes circular cuts.

Abstract: A guide bar has a pair of clamps for mounting on the shoe of an electric power hand saw. The guide bar is adjustable both longitudinally and laterally in relation to the saw. This arrangement facilitates trimming strips off the ends or side edges of wood panels wherein the width of such strips may vary from a small fraction of an inch to several inches.

Abstract: A step groover apparatus has a housing to which a direct drive means is attached. The drive means has a rotatable shaft extending into the interior of the housing and on which a plurality of grooving blades are fixed in space relationship. The blades extend through an opening in a lower portion of the housing. The housing has front and rear skids on which the apparatus slides as it moves along the top of the step. The skids are vertically adjustable to vary the depth of the groove to be cut in the step. A vertically and horizontally adjustable face guide is adapted to be forced against the face of the step so that the grooves will be parallel to the step face. A radially extending handle is attached to the housing so that the rear skid may be pressed downward against the top of the step. A laterally extending handle is attached to the housing so that the front skid and the face guide may be simultaneously pressed against the top and face of the step, respectively.

Abstract: Lumber cutting attachments for use with a portable chain saw comprising a depth gauge or tip bracket for making a preliminary guide channel longitudinally of a lot to be cut into lumber, a stabilizing bracket including means for following the guide channel and directing the saw chain into the channel, and a guide bracket for cutting lengths of lumber of a desired width. The invention includes the method of cutting straight lengths of lumber from a log with a chain saw utilizing a chalk line to delineate the path of the guide channel.

Abstract: A guide and adaptor for a hand saw having a blade, the guide and adaptor being used for obtaining a straight line cut of a board in different widths, comprising a first member adapted to receive at least a part of the hand saw, a second member provided with a first edge means and a second opposite edge means, the first edge means being adapted to rest in a first predetermined position against one edge of the board, and the second edge means being adapted to rest in a second reversed predetermined position against the one edge of the board, and tubular means.

Abstract: A radius router guide having a pair of spaced legs arranged for receiving a piece of material at an end of the material where a radius is to be cut. The legs are connected to a track arrangement which slidably supports a router, and the legs are also attached to the workpiece itself in such a manner as to pivot about an appropriate axis for cutting a desired radius on the workpiece. The router slides back and forth as it swings about the pivot axis of the legs so as to form a radius on the associated end of the workpiece. At least one of the legs is adjustably mounted on the track arrangement to permit varying the spacing between the legs so as to accommodate material of different widths.

Abstract: A portable straight edge cutting guide for use with a router, circular saw, sabre saw and similar tools, including a hardwood straight edge and metal angle iron track assembly with adjustable clamps for mounting on a work surface, a removable bearing block assembly having three cam follower bearings which engage with and travel along said angle iron track, and interchangeable adapter plates secured to the bearing block assembly, conforming to the particular tool, which fasten to and travel with the bearing block assembly. A router or other tool is mounted on the appropriate adapter plate; its position relative to the workpiece is aligned by means of adjusting screws on the bearing block assembly, and is then guided along the length of the work piece by the manual movement of the bearing block along the track.

Abstract: A saw guide device includes a planar element having a pair of sides, a forward end, and a rear end. A flange member is affixed at an obtuse angle to the forward end of the planar element. An L-shaped member is affixed to each side of the planar element, wherein each L-shaped element is tilted inwardly over the planar element. The shoe of the saw is adapted to be received on the planar element. A block element is affixed to a bottom rear center of the planar element, wherein the block element is received into the saw cut rearwardly of the saw blade.

Abstract: A guide assembly is provided with a pair of spaced and parallel guides and includes a carriage mounted on rollers between the guides for longitudinal movement therealong. The carriage can be clamped in position or limited in movement along the guides by means of a pair of slide guides which can be detachably clamped to the guide assembly. A sabre saw is detachably secured to the carriage and the guide assembly is clamped to the work-piece to be cut whereupon the sabre saw and the carriage is pushed along the guide assembly making a straight cut or a bevelled cut in the work-piece, depending upon the setting of the sabre saw assembly. A center pivot bearing assembly is also mounted upon the guide assembly and includes an adjustable work-piece engaging screw engaging the work-piece and acting as a center pivot so that the saw can be used for circle cutting by rotating the blade assembly 90.degree. from the straight ahead position. This circle cutting can also be at a bevelled angle if desired.

Abstract: Guide frame means for portable powered saws and including a retainer means comprising a generally "U" shaped frame member having a pair of opposed lateral legs and a first cross-member extending between said opposed legs. An edge guide is coupled between said legs in opposed relationship to the cross-member, with the edge guide having a inwardly facing edge with an inwardly extending flange overlying the inwardly facing edge. Saw cradle means are mounted for adjustable positioning along the laterally extending legs, with the saw cradle means having an opening formed therein to accommodate a saw blade. Castor support means are mounted on the cross-member and are arranged to support the guide frame means at an elevation substantially along a plane through the work supporting surface of the inwardly extending flange.