Abstract: A system and method for fabricating, hauling, and deploying an industrial crane mat constructed from recycled windmill turbine spars. The system and method comprising: removing outer covering from a wind turbine blade with a trimmer, cutting the wind turbine blade into a plurality of uniform boards using a cutter, connecting the plurality of the plurality of uniform boards side by side into two rows of the plurality of uniform boards, using a plurality of rings, wherein the two rows each have a first end and a second end, and wherein the plurality of rings connects a first end of the first row to a second end of the second row together to form a crane mat, bifolding the crane mat onto itself in half along a latitudinal axis of the crane mat using a loader, loading the bifolded crane mat onto a trailer using a line attached to the bifolded crane mat to pull the bifolded crane mat onto the trailer and pulling the bifolded crane mat onto the trailer using a winch.

Abstract: A pulley system for transferring motor torque to a cutting blade assembly is provided. The system is installed on a log cutting machine. A motor of the log cutting machine is positioned on a support table, which is intended to raise and lower during operation. The cutting blade assembly includes a cutting blade member for cutting a log off a tree trunk. A chain is attached to a cutting blade member and the support table, such that when the cutting blade member is driven downward towards the tree trunk, the connected chain and support table are lowered assisting the actuation of the cutting blade member via the pulley system.

Abstract: A saw contains: a saw blade, a handle, and an auxiliary fixing device. The saw blade includes a serrated sawing section, a connection shaft, a fixing post defined between the connection shaft and the handle. The auxiliary fixing device includes two clamp extensions, wherein two front ends of the two clamp extensions are connected together by using a guiding section of the auxiliary fixing device. The auxiliary fixing device also includes two first elastic rings respectively rolled on two rear ends of the two clamp extensions, two second elastic rings individually formed in the two first elastic rings. Each second elastic ring is eccentric with each first elastic ring and its diameter is less than that of each first elastic ring, each second elastic ring is rotatably fitted with the connection shaft, and each first elastic ring abuts against the fixing post as not using the saw.

Abstract: In some embodiments, a method and/or system may include a reciprocating saw system. The reciprocating saw system may include a housing and a reciprocating blade. The system may include an elongated member. When activated the elongated member may move from a first position to a second position such that a workpiece is positioned adjacent at least a portion of the housing and the reciprocating blade. The system may include a tension mechanism coupled to the elongated member. When the tension mechanism is activated the elongated member may move from the first position to the second position. In some embodiments, the system may include an engaging mechanism. The engaging mechanism, when activated, releases a first stop positioned distally on the housing. In some embodiments, when the first stop is released, when a tensile force is applied to the conveyor, the conveyor moves proximally moving the elongated member to the second position.

Abstract: A glazing panel cut out system for use with a cutting wire in cutting out a vehicle glazing panel cut out procedure has a dispenser unit for dispensing cutting wire and a winder unit for winding the wire, both being mounted to the glazing panel during use. The winder unit has one or more winder spools for winding the cutting wire dispensed from the dispenser. The cutting wire is paid out from the dispenser whilst mounted to the glazing panel during the cut out procedure.

Abstract: A reciprocating saw can include a housing and a motor disposed in the housing. A blade retaining mechanism can receive a saw blade. A drive mechanism can translate rotational motion of the motor into reciprocating motion of the blade retaining mechanism. A clamp assembly can include first and second shoes that are coupled to the housing. The first shoe can have a first shoe body that includes a first material facing surface. The second shoe can include a second material facing surface that opposes the first material facing surface and that defines a clamping distance therebetween. At least one of the first and second shoes is selectively adjustable relative to the housing, such that the clamping distance can be altered. One of the first or second shoe bodies can have a third material facing surface that comprises an arcuate section defining a radius.

Abstract: Embodiments provide various saw chain links which may be combined to form a utility saw chain. In various other embodiments, cutting system fixtures are disclosed which may facilitate the cutting of pipes and other materials from an axis point.

Abstract: A saw for cutting an overhead object is provided. The saw including: an elongated pole having a first end held by a user and a second end; a holding mechanism disposed at the second end of the elongated pole, the holding mechanism having an opening for holding the overhead object; and a cutting blade movably disposed on one of the elongated pole or holding mechanism so as to define a cutting stroke within the opening.

Abstract: A cutting guide. The cutting guide includes a body portion having a leading edge and an opening therethrough and an engagement portion concentrically attached to the body portion. The leading edge is adapted to guide a saw while a cut is being made in a material.

Abstract: The invention relates to a powered reciprocating saw. To simplify use of the saw, a clamping mechanism is provided which holds an object in position while it is sawn. The clamping mechanism is mounted at the front of the housing of the saw near the saw blade. The clamping mechanism comprises: a slide element for sliding movement in the cutting direction, a supporting member, and a clamping arm rotatably mounted on the slide element by a one way clutch to clamp an object therebetween in a clamping position below the saw blade. When the saw is in use, it vibrates. Since the clamping arm has a moment of inertia with respect to the axis of rotation of the one way clutch, the oscillating movement is transformed into a progressive rotational movement of the clamping arm to clamp an object.

Abstract: A handheld circular saw incorporating an improved rip guide is illustrated which guarantees accurate cuts in the ripping of sheet workpieces. The guide is precisely clamped to the upper surface of a foot assembly of the circular saw. A guide member is slidably movable along the longitudinal length of a bar section of the guide and securely locked in a desired position where it assures that a workpiece can be cut to a precise width desired, as a result of the accuracy of alignment of a flat surface of the guide member which is precisely parallel to the plane of the circular saw blade, that is then moved flush along an edge of the workpiece being ripped.

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: 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: 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: The invention relates to a powered reciprocating saw, in particular, to a pruning saw. To simplify use of the saw, a clamping mechanism is provided which holds an object in position while it is sawed. The clamping mechanism includes a clamping arm that is mounted at the front portion of the saw housing near the blade by a one way rotary clutch such that the arm can freely rotate in only one direction. During use, the saw vibrates due to its reciprocating parts. Since the clamping arm has a center of mass spaced apart from the axis of rotation provided by the one way rotary clutch, a progressive rotational movement of the clamping arm results which thereby automatically closes to clamp the object to be cut.

Abstract: The invention relates to a powered reciprocating saw, in particular to a pruning saw. To simplify use of the saw a clamping mechanism is provided which holds an object in position while it is sawn. The clamping mechanism is mounted at the front portion 4 of the housing of the saw near the saw blade 20. The clamping mechanism comprises: a slide element 30 for sliding movement in cutting direction C of the saw blade, a supporting member 30; and a clamping arm 40 being rotatably mounted on the slide element 30, by means of a one way rotary clutch 42 such that the arm can freely rotate in one direction only, in which direction the clamping arm 40 moves towards the support member 30 to clamp an object therebetween in a clamping position below the saw blade for sawing it. When the saw is in use, it vibrates due to its reciprocating parts.

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: 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 tool and associated positioning templates locate and cut rectangular junction box holes in dry wall or similar sheet material forming structural surfaces. Templates defining a medial positioning slot and providing a spaced pair of positioning pins are carried by pre-established junction boxes and surface sheeting material is established thereover with the positioning pins projecting through the sheet material to indicate positioning slot location. The tool provides a body articulately carrying two perpendicular pairs of spaced parallel saw blades that are moved reciprocably by spring biased driving linkage to cut rectilinear holes in the sheet material over the junction boxes. The saw blades have arcuate edges defining cutting teeth of opposite pitch on each side of the arcuate edge of the tool to aid positional maintenance and prevent chatter during cutting.

Abstract: The rail cutting device includes a base having a pair of jaws fastened together about the head of a rail with a fastening member and an elongate member extending upward from the rail and further comprises a pivot linkage which has one end pivotally attached to the top end of the support member and other end pivotally attached to an elongate support column having a pair of handle members at the top end of the column and a cutting member at the bottom end of the column, the cutting member being actuatable by a hydraulic motor and the support column being of a sufficient length such that the handle members are essentially at or above the waist of a user standing essentially erect and operating the cutting device.

Abstract: In connection with a hand-operated power tool (10), in particular a hand-operated circular saw, with a machine housing and a base plate (11, 41) with a guide groove (18, 63) for overlapping a guide rib (17) of a guide rail (16) for the guided displacement of the hand-operated power tool (10) on a workpiece, the object of providing a precisely adjustable position of the guide groove with a small manufacturing outlay is attained in that the guide groove (18, 63) is disposed in a groove holder (21, 51) which is separate in respect to the base plate (11, 41), secured against loss, displaceable in at least one direction in the plane of the base plate (11, 41), particularly transversely to the guide groove (18, 63).

Abstract: A saber saw assembly includes a vice for clamping an object to be cut and a saber saw having a saw blade to be operated in reciprocating motion. The saber saw is arranged to cut the object with the reciprocating saw blade while the object is clamped by the vice. The vice is in the form of a pipe wrench. The pipe wrench clamps the object when rotated in a clamping direction while releases the object when rotated in a releasing direction opposite to the clamping direction. Accordingly, by using the pipe wrench for the vice, the clamping and releasing operations for the object are simplified to enhance the working efficiency for cutting the object.

Abstract: A windshield removal apparatus that includes a suction cup assembly that is secured, via a vacuum, onto the interior center portion of an automobile's windshield. A swivel head is located at the opposite end of the assembly where the vacuum interface is initiated. The swivel head rotates bi-directionally 360 degrees in approximately the same plane as that of the windshield. The rotation of the swivel head is relatively friction free. A spring is located between the swivel head and the cutting wire which is in turn attached to a grip, to complete the configuration of the apparatus. The cutting wire is initially threaded through the seal between the windshield and automobile. The connection of the cutting wire to the spring and swivel head may take place in any order such that the apparatus is in the appropriate position to commence the cutting process of the entire perimeter of the seal.

Abstract: An apparatus forming a portable, hand-operated machine (1, 1', 1"), having a circular cutting wheel (4) or saw blade (4") which is rotatable about a center of rotation (5, 5"), comprises a double-armed holder (9) with a rear arm (20) which, at its rear, free end (27), is connected to the machine at a first hinge, rotatable about a first axis of rotation (18, 18a, 18b, 18") parallel to the center of rotation of the cutting wheel or the saw blade, and, at the other end, is connected rotatably, by means of a toggle joint (22), to a front arm (21) which in turn is connected rotatably, at its front, free end, to a securing device about a second axis of rotation at a second hinge, for rotatable anchoring of the holder and, thus, of the machine on the object which is to be cut or sawn.

Abstract: A guide for attaching to a router to form arcuate cuts in a workpiece. The router guide has a circular mounting plate which replaces a lower plate of a router. The guide has an elongated arm extending from the mounting plate with a slot extending along the longitudinal center line of the guide arm. An anchoring mechanism slidably carried in the slot includes an anchor fastener such as a wood screw or nail to anchor the anchoring mechanism to the workpiece and define a pivot point for the router and guide. The anchoring mechanism further includes a locking mechanism to releasably lock the anchoring mechanism in place along the slot to define the radius of travel of the router and guide about the pivot point.

Abstract: A radial guide device for a power saw apparatus to accommodate the radius of the circular pattern to be cut from a hard relatively smooth surfaced planar material. The present invention also contemplates a slidably movable pivot means to adjust a selectively adjustable radius on a fixed guide arm to provide the desired circular pattern in a selected planar material. More particularly, the invention relates to a guide device which allows for a portable electric circular saw to be mounted therein and as an insert to be guided at a desirable fixed radial direction as it transverses the material to be cut.

Abstract: A rope saw cutting apparatus is partially insertable through a bore in a composite panel to scarf the panel without access to the blind side of the panel. The same apparatus can also be used to prepare a tapered repair plug to close tolerance to repair the scarfed panel. The apparatus preferably uses a rope saw blade to perform a plunge cut followed by a circumferential cut which has a desired taper or scarf angle.

Abstract: A combination saw guide and surface protector which can conveniently be used in the field with a hand operated, power circular saw to make precise cuts in very large sheets of plywood paneling, wallboard and the like. The apparatus includes a surface protector which prevents the soleplate of the saw from engaging and possibly damaging the surface of the workpiece. The apparatus includes two or more sections that can be quickly and easily connected together to enable precision cuts to be made even on very large sheets of paneling and plywood.

Abstract: A piling cutting tool (10) comprising a piling cutting jig (12) and chain saw (14) engaged therewith. The jig (12) includes a rectangular frame (38) having levels (94) and (96) on the top wall (48) thereof. A receiving tube (58) is attached to the frame (38) and sized and shaped to receive an adapter shaft (84) attached to the chain saw (14). The height of the chain saw (14) is adjusted by a rod (70) and locked into the desired position by locking lever (74). The shaft (84) rotates about the longitudinal axis of the bore (68) to swing the cutting chain (30) through a cutting arc to thereby make a horizontally level cut across the piling (54).

Abstract: A jigsaw-type saw blade, typically 6".times.3/8".times.1/8" stainless steel having teeth angled to saw only in a thrusting direction, is fixed to a handle, typically plastic, that engages the thumb. Two jaws of a sliding vise member each slide independently along the saw blade. A first one of the vise's jaws is biased in separation from the handle by a spring that extends coaxially about the saw blade between the jaw and handle. The remaining, second, jaw presents an external surface contoured to receive two fingers disposed in symmetrical positions on either side of the saw blade. In use for clamping and sawing, a workpiece is inserted between the vise's jaws and into a first position proximate to the saw blade while the sliding vise member is in a position extended from the handle. The handle and the second jaw are grasped and squeezed between the thumb and a two fingers, thereby simultaneously clamping and sawing the workpiece.

Abstract: A circular cutting device for cutting planar material along a predetermined radius utilizing a saw having a blade member. The saw is mounted on a saw base having a raised edge. An end plate has a front end positioned adjacent the saw base raised edge and has an attachment mechanism for securing the end plate to the saw base. An adjustment bar has a longitudinal slot formed therein, the adjustment bar being attached to the end plate at a side opposite to the end plate front edge. An extension bar has an axis extending generally parallel to the axis of the adjustment bar and is slidably movable with respect to the adjustment bar. The extension bar is secured to the adjustment bar along the axes. The extension bar is secured to the material to be cut.

Abstract: A method and apparatus for preparing skived belting ends for joining by means of fasteners, and like products. A guide block is temporarily fastened across the width of the belting, serving as a guide for a chain saw tool. A first side edge portion of the tool slidably engages the guide block while permitting the cutting plane to be transverse to the direction of said width and intersecting with the belting surface to skive it. Thereafter, a second side edge portion of the tool slidably engages the guide block while permitting the cutting plane to be parallel to the direction of said width and intersecting with the belting to cut off an end thereof.

Abstract: A portable reciprocating saw includes a tool housing, an electric motor enclosed in the tool housing and having an output shaft, an elongated slider for supporting a saw blade, and motion converting means mounted in the tool housing for converting the rotation from the electric motor into a reciprocating motion of the slider in longitudinal direction. The motion converting means includes a bevel gear meshing with the ouptut shaft of the electric motor and rotatable about an axis inclined to a plane transverse to the longitudinal direction of the slider, a slider block mounted on the slider and having a guide groove formed on a lower surface thereof in a direction transverse to the longitudinal direction of the slider, and an eccentric pin mounted on the bevel gear at a position eccentric from the center of the bevel gear and loosely fitted in the guide groove of the slider block.

Abstract: A device for supporting and guiding portable electric machines performing a rectilinear work, such as a cut, a rabbet or bead, which includes a rectilinear rail (1) of a U-shaped section including two parallel wings (2) and a bottom (3) in which a travelling path (5) receives a mobile carrier (6) adapted for carrying the machine, the rail being fixed to the material (23) to be worked by sliding stirrups (8, 24); the rail is made at least on a major portion of its perimeter of a double U-shaped wall, the two walls being rigidly connected to one another by braces placed in the space between the two walls so as to form a monolithic structure, non deformable under the efforts generated by the machine in any position.

Abstract: A railroad rail cold sawing device for securement about a railroad rail having a central web and flanges connected to opposite ends of the web, includes a sawing section having a sawing blade; a drive section; a spline drive shaft for removably connecting the drive section and the sawing section to cause rotation of the saw blade; and at least one clamping assembly for removably clamping the sawing section and the drive section to the railroad rail, each clamping assembly including a support for supporting a respective section on an upper one of the flanges, a fixed clamping leg fixedly secured to the support for clamping one side of the central web, a pivotal clamping leg pivotally secured to the support for clamping an opposite side of the central web, and a piston-cylinder drive assembly connected to the support and the pivoting clamping leg for pivoting the pivoting clamping leg into clamping relation with the opposite side of the central web to secure the respective section to the railroad rail.

Abstract: A one-piece elongated rectangular metal fence plate adjustably attachable to a cutable guide base of plywood or plastic. One longitudinal edge of the fence plate is formed into a guide fence for hand held power circular saws or saber saws. The invention has straight widened edges of adjustably bolting to the surface of the guide base. The fence plate attached to the guide base provides an elongated saw guide fence for straight cutting of large building material panels such as plywood. The guide base is a rectangular panel sized equal in length to the fence plate. The guide base is initially of greater width than the width of the fence plate plus the width of the base of the power saw. For the initial set-up, the fence plate is bolted to the guide base. The guide base is then cut to size using a power hand saw with the guide fence of the attached fence plate serving as the saw guide to assure parallel alignment of the guide fence relative to the cut edge of the guide base.

Abstract: A portable band saw for cutting boards of variable thickness from a log has a frame that carries the band saws wheels and a space between the cutting length of the band and the frame that is large enough for the board that is cut from the log to fit through and a slide or rollers for riding on the log when the band saw is cutting a board from the log is carried by the frame in the space between the cutting length of the band and the frame so that the band saw rides along the log from end to end of the log while cutting a board from the log of thickness determined by the space between the cutting length of the band and the bottom of the slide. In a preferred embodiment of the invention, to make the first cut on a rough log, anchor plates are attached to each end of the log that carry supports for a smooth rigid beam suspended between the supports on which the band saw slide rides to cut a straight flat surface longitudinally along the log.

Abstract: A portable sawmill (20) having a frame (22) adapted to be disposed transversely of a log (24). A pair of horizontally spaced apart wheels (26a,b) are adapted to straddle the log (24). The wheels (26a,b) are rotatably supported by the frame (22) for rotation in a substantially vertical plane. A band saw blade (28) is trained around the wheels (26a,b) and for movement transversely of the log (24). An engine (30) is provided for rotating at least one of the wheels (26a,b) to cause the band saw blade (28) to form a cut in the log (24) as the frame (22) is moved longitudinally along the log (24). An elevating assembly (44) is provided for supporting the frame (22) so as to enable vertical adjustment of the band saw blade (28) relative to a top surface of the log (24). Guide rollers (40) are interconnected through the frame (22) for guiding the frame (22) along the log (24).

Abstract: A portable miter guide device for chain and hand saws having a holding assembly (12) including a cradle member (18) and coacting clamps (36,38) for attaching the device to a work piece (W). The device includes a support arm (32) to which is attached an adjustment arm (14) for limited angular movement in a plane parallel to the work piece. Adjustably attached to the outer end of the adjustment arm (14) at an upstanding right angle is a saw guide member (16) with guide slot (80, 88, 90) for guiding chain and hand saws. The device can be attached to large wooden work pieces, the angle of cut chosen and a chain or hand saw (C, H) used to obtain an accurate square or compound cut in the work piece (W). In a second embodiment of the invention the adjustment arm (130) is fixed rather than being pivotal has a disc member (132) with support brackets (136,138) for pivotally supporting guide member (16).

Abstract: A portable compass saw which is provided with an oscillation drive for driving a saw blade. The oscillation drive includes a gear, which is mounted on a shaft in the housing; engaging in the teeth of the gear is a pinion of a drive shaft of a drive motor. At a distance from its axis of rotation, the gear is provided with a pin extending parallel thereto. The pin is in driving connection with a clutch member, which is connected to the push rod and has a guide for the bolt, with the guide extending at right angles to the longitudinal axis of the push rod. The teeth of the gear are provided on that side of the gear which faces the push rod. The pinion is located in the region between the push rod and the gear, which is seated loosely on the shaft and is held on the latter under the load of the pinion. As a result, the gear is held reliably in its installed position, even though it is seated loosely on the shaft and is not secured to prevent axial displacement by separate securing members.

Abstract: A portable compass saw having an oscillation drive for a push rod, to which a saw blade is attached. The push rod has an angular cross-section, and is guided over part of its length on all sides in a housing. Guide surfaces, themselves formed by parts of the housing, are provided for the purpose of guidance on two opposite sides of the push rod. Roller bearings extending at right angles to the stroke direction are respectively located on the two other sides of the push rod. In the region of the oscillation drive, a pressure member acts on the push rod on the opposite side. This member loads the push rod in the direction toward the oscillation drive. The push rod is consequently guided in a trouble free manner in the housing in, and at right angles to, the direction of the stroke, so that no play occurs which may impair the saw cut.

Abstract: A guide device for a hand circular saw or the like has a guide plate with a non-slip coating on its lower face to make contact with the work, and a foot plate running along the guide plate and carrying the saw or the like thereon. The foot plate has a recess thereon which enables it to completely straddle the guide plate while giving lateral guidance. In the recess there are spring loaded rollers or shoes pressing on the guide plate.

Abstract: In a hand-held motor-driven compass saw, the end of the reciprocating rod is connected to the end of the saw blade by means of a clamping member. The reciprocating rod has a U-shaped cross-section whereby it defines a relatively flat recess into which the end of the saw blade is inserted. The end of the reciprocating rod and the end of the saw blade are surrounded by a protective shield. The clamping member may be displaced along the end portion of the reciprocating rod from outside of the shield so as to release the clamping member or to lock it on the end of the reciprocating member when the saw blade is inserted into the recess formed in the U-shaped reciprocating rod.

Abstract: A circular sawblade useful in cutting circular figures from a planar material utilizing a power source to rotate the sawblade where the blade has a selected degree of concativity to accommodate the radius of the circular figure to be cut from the planar material. The present invention further comprehends a saw device to mount the blade for rotation where the cutting plane of the material can be selectively adjusted with respect to the degree of concativity of the sawblade to selectively adjust the angle between the surface cut by the blade and the planar surface of the material.

Abstract: An aligning mechanism for power hand saws in the preferred structure of this disclosure is connected to a saw. The saw comprises a motor, a handle, and a blade. The mechanism comprises a guide member extending substantially in same direction as a cutting motion of the saw blade and an aligning device extending substantially transversely from the guide member. The aligning device is engaged to the guide member so that at least a portion of the guide member slides forwardly with a saw blade during guiding movements of the mechanism. The guide member comprises an elongated outer portion and an elongated inner portion. The elongated outer portion is hollow and the elongated inner portion is slidably engaged to such elongated outer portion. A resilient element is positioned on the guide member to urge the aligning device in a forwardly direction. The aligning device has an operable position and a non-operable position.

Abstract: A power saw pruning device (A) is disclosed which utilizes a conventional saber saw (14) for pruning trees. The device includes an elongated pole handle (10) and a base adaptor (12) carried on one end of the elongated pole handle. The base (12) includes a rack (16, 18) in which a shoe (20) of the saber saw slides in opposing directions in one dimension. An elongated slot (26) is formed in the base (12) for receiving a blade (28) of the saber saw therethrough. Angle arm means (B) includes an angle edge (44) which tapers from an open mouth (46) to the base (12) for gripping a tree limb (40) therein. The plane of the angle arm (42) is offset relative to the plane of the blade (28). By hanging the device on a tree limb to be cut, an operator may move to a remote position and operate the power saw by a switch (32). After the tree limb is cut through, the device remains suspended on a stump (40a) of the tree limb which has been cut.

Abstract: A tip stabilizing device for attachment to a portable power chain saw or the like for improving its operation and safety. When attached to the forward end of the chain saw guide bar, a plurality of spikes extend forward, backward or outward to the sides of the guide bar to engage an adjacent log or other supporting surface or the object being cut by the saw to stabilize the saw tip. The forces generated at the chain/wood interface are utilized to keep the tip stabilizing device in operative engagement with such surface.

Abstract: A cutting tool mechanism including a slide member, a track member slidably guiding the slide member along a preselected path, a saw, and structure associated with the slide member for mounting the saw thereto. The mechanism includes structure for directing the user's hands away from the saw blade in the use of the mechanism, including a pair of handles at opposite sides of the saw mounting structure. The axis of the saw is disposed at a small angle to the slide plane, and to the direction of guided movement. Adjustable slide elements are mounted to the slide member for adjusting the disposition of the slide member on the track member. Adjustable track followers are adjustably mounted to the slide member for maintaining accurate guided fit of the slide member on the track member.

Abstract: A saw aligning mechanism or assembly in the preferred structure of this disclosure is supported on a power hand saw by a support. The saw comprises a motor, a handle, a blade and a trigger switch. The assembly comprises the support, an elongated shaft and an aligning device or plate. The shaft extends longitudinally in substantially the same direction as the cutting movements of the saw and is connected to the support. The aligning plate extends substantially transversely to the shaft for butting against an object to be cut. The aligning plate is connected to the shaft by a bore which allows the aligning plate to slide and pivot on the shaft. A second form of the disclosure presents an assembly wherein the elongated shaft is slidably connected to the support.