Abstract: An apparatus having a foot, a reciprocating saw and a housing. Between the foot and the housing there are means for releasable mounting the foot on the housing, characterized in that the releasable mounting means have a first coupling member connected to the foot and, co-acting therewith, a second coupling member connected to the housing. The coupling members can be carried from a disconnected to a connected position by a relative displacement between the foot and housing.

Abstract: A saw extension for supporting a hand-held portable rotary saw has a base, a plurality of wheels positioned to support the base above a surface, and an upwardly extending arm extending from the base to a control grip. The hand-held portable rotary saw is removably attached to the base with at least one locking pin positioned through a guide plate of the hand-held portable rotary saw and into at least one locking aperture of the base. The saw extension includes a power control mechanism mounted on the saw extension. The power control mechanism includes a power socket into which a saw power cord of the hand-held portable rotary saw can be plugged, a master power cord for electronically connecting the power socket with an external power source.

Abstract: A pruner attachment apparatus includes a body releasably attachable to a shoe of a power tool of the type having a reciprocating saw blade. The body includes a front face for engaging a workpiece. The pruner attachment apparatus further includes a hook member for engaging the workpiece. The hook member is laterally spaced from the saw blade of the tool and is mounted to the body for movement along a path between a first position and a second position. The path includes an upper curvilinear portion configured such that movement of the hook member from the first position to the second position positions the hook member completely behind an imaginary line in a common plane with the front face. A biasing mechanism biases the hook member to the second position.

Abstract: A hand-held power tool has a drive unit for a tool (5) and a baseplate (2) to guide the drive unit over a surface (3) of a workpiece (4). To ensure the smoothest and straightest possible guidance of the drive unit in a working direction (A), the baseplate (2), on its ends regions (11) facing the working direction, has a one-piece guide roller (12) with an anti-slip coating.

Abstract: A pruner attachment apparatus for a power tool having a body, a shoe extending from the body, and a saw blade interconnected to the body for reciprocating motion. The pruner attachment apparatus includes a mounting member, a hook member and a biasing mechanism. The mounting member is releasably attachable to the shoe. The hook member is carried by the mounting member for movement between a first position and a second position. The biasing mechanism biases the hook member to the second position.

Abstract: A bush-cutter for the manual moving of grass and the like comprises a rod or a stiff arm, working as a handle, which supports at one end a cutting head rotating around on axis and having cutting means with a cutting element, for example a blade or a flexible rope or the like, and engine means which make the cutting head rotate through gearing means. According to the invention, the bush-cutter comprises spacing means (13), including a spacer (14) which swings coaxially to said cutting head (11) around said axis (X—X) and which, during the mowing of the grass, selectively contacts any possible obstacle at a radial distance from the cutting head (11), that is longer than the radial extension of the cutting element of said cutting means (11.2), in respect of the head, in order to avoid the contact of said cutting element with the obstacle.

Abstract: A shadow line saw for cutting building lining having a substantially planar blade support member with a guide surface and a grasping means support surface. An elongate blade is supported by the blade support member. The blade has a working edge with a plurality of saw teeth mounted therealong. A grasping handle extends from the grasping means support surface and is configured to permit an operator of the saw to exert a force on said blade parallel to the guide surface.

Abstract: To limit the penetration of the outer end of a chain saw into a material being cut by the saw, the chain carrying rail of the saw has a number of uniformly sized holes located at different points along its length into any selected one of which holes a limiting means can be placed, with the limiting means including two rotatable wheels located on opposite sides of the rail.

Abstract: A saw extension for supporting a hand-held portable rotary saw has a base, a plurality of wheels positioned to support the base above a surface, and an upwardly extending arm extending from the base to a control grip. The hand-held portable rotary saw is removably attached to the base with at least one locking pin positioned through a guide plate of the hand-held portable rotary saw and into at least one locking aperture of the base. The saw extension includes a power control mechanism mounted adjacent the control grip. The power control mechanism includes a power socket into which a saw power cord of the hand-held portable rotary saw can be plugged, a master power cord for electronically connecting the power socket with an external power source, and a trigger switch for operably controlling the flow of power to the hand-held portable rotary saw.

Abstract: The pipe cutter includes a jigsaw with a motor that reciprocates a saw blade back and forth. A way is clamped to the jigsaw. A workpiece holder is slidably mounted on the way. The workpiece holder has a workpiece slot with a base, two side walls and a saw blade slot. A handle is attached to the workpiece holder. A pipe that is to be cut is placed in the workpiece slot and the workpiece holder is moved along the way toward the saw blade. The saw blade forces the pipe toward the base of the workpiece slot and cuts the pipe.

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: An apparatus for cutting grooves in a green concrete slab having at least one terminating side edge transverse to a broad top surface in a low cost manner is described and includes the following elements: a hand-held portable rotary saw, supported on a rollable platform disconnectably connected to and supporting the relative to the green concrete slab. The rollable platform includes a planar base in surface contact with a conventional guide plate of the saw, and flared side walls extending outwardly from the planar base an anchoring portion adapted to receive a human-generated force to provide rectilinear travel along a preselected direction over the green concrete slab. The planar base also includes a slot in alignment with an opening in the guide plate through which the saw blade extends whereby a working plane of reference is defined that intersects an axis of rotation of the saw blade whereby a maximum depth of cut is easily defined coincident with the working plane of reference.

Abstract: The bar of a chain saw is attached to a jig which includes a support block pivotally attached to a pair of spaced support arms extending outwardly therefrom for supporting a log or branch to be cut, and fingers extending angularly forwardly and upwardly from the ends of the support arms for scooping up logs and branches from the ground onto the support arms and into contact with a pair of spaced upright, toothed stop arms on the support arms which prevent kickback or twisting of the log or branch as it is being cut by the chain saw as the support block is pivoted relative to the support arms between non-use and use positions.

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 plate-joinery system includes a chain-saw plate joiner where the cutting mechanism includes a cutting-chain driven about a saw-bar. The cutting mechanism of the chain-saw plate joiner may be advanced on rails to one of a set of predetermined depths. The increased recess depth allowed by the chain-saw and the resultant increase in both glueable surface area and mechanical engagement permit high-strength right-angle joints to be made with the speed of conventional plate-joinery. Plate-joints of more conventional proportion may also be made. The plate joinery system also includes specialty plate configurations and compatible fasteners that permit many joints to be rapidly assembled without resort to either manual glue application or external clamps. A series of high-precision, low-friction cutting devices suitable for general introduction is also described.

Abstract: A powered circular saw blade on a vertical shaft is supported on a slide which is slideably mounted on a guideway having feet to enable moving the assembly around on a building sub-floor. The feet are adjustable to enable raising or lowering the guideway base and, thereby, the saw blade. A blade guard is affixed to the guideway base and shaped to admit the saw assembly to an inside corner of a building room. The blade is normally retracted behind the blade guard but can be advanced to position ahead of the guard as the guard is braced against a door jamb or the like and the slide is pushed toward the door jamb to advance the blade into cutting position. Immediately upon release of the advancing force manually applied, a return spring returns the blade to retracted protected position.

Abstract: An apparatus for cutting grooves in a green concrete slab having at least one terminating side edge transverse to a broad top surface in a low cost manner is described and includes the following elements: a hand-held portable rotary saw, supported on a rollable platform disconnectably connected to and supporting the relative to the green concrete slab. The rollable platform includes a planar base in surface contact with a conventional guide plate of the saw, and flared side walls extending outwardly from the planar base an anchoring portion adapted to receive a human-generated force to provide rectilinear travel along a preselected direction over the green concrete slab. The planar base also includes a slot in alignment with an opening in the guide plate through which the saw blade extends whereby a working plane of reference is defined that intersects an axis of rotation of the saw blade whereby a maximum depth of cut is easily defined coincident with the working plane of reference.

Abstract: A rip guide for a circular saw. The circular saw includes a housing including a shoe plate for supporting the circular saw on a workpiece. The circular saw also includes a motor supported by the housing and a saw blade rotatably driven by the motor about an axis. The saw blade is operable to cut the workpiece in a cutting direction. The guide comprises a support member supported on the housing; an arm supported by the support member and extending from the housing in the cutting direction; and a guide member supported by the arm so that the guide member is pivotally supported by the support member. The guide member extends from the housing in the cutting direction. The guide member includes first and second guide surfaces for selectively guiding the circular saw relative to first and second edges, respectively, of the workpiece. The guide member is pivotable between a working position and a stored position.

Abstract: The invention is a cutter bar for a chain saw which permits quick and convenient trimming of hedges and shrubbery. The cutter bar is of conventional design, being relatively thin and elongated, and supporting a cutting chain which extends around its periphery. Additionally, the cutter bar of this invention has a plurality of spaced-apart tines which extend transversely out from the top and/or bottom of the cutter blade. The tines are fastened to or extend from a side or edge of the cutter blade, optionally by rivets passing through a shim or spacer--the tines are not connected to each other by a web or common casting other than the cutter blade. This way, the web or common casting does not add to the size, bulk, or weight of the cutter blade, allowing it to remain less burdensome and less interfering during cutting. In a preferred embodiment, the spacing on the cutter bar between tines varies so that branches or limbs of varying diameter may be accommodated by the cutter blade while cutting.

Abstract: A chain saw having a guard member supported above the chain of the saw. The guard is supported by support members at the first and second ends of the chain guide. At the first end of the chain guide the blade is swingably supported and is swingable through a range from a position parallel to the chain guide to a position normal to the chain guide. At the second end of the chain guide the guard bar is releasably supported to hold the guard bar in a guard position parallel to the chain guide and to release the guard bar to swing out of the way when a work piece is being cut.

Abstract: The present invention provides an improved power driven chain saw that includes a device for controlling and eliminating kickback reactive forces. The anti-kickback control device includes a free swinging pivotable attachment that has a distal end portion which is shaped-like a spike or a hook and a proximal end portion which extends longitudinally. The distal end portion is positioned at an angle to the proximal end portion and the spike or hook is used to hold an object to be cut. The proximal end portion is mounted on a pivot member and this assembly is then mounted on the chain saw. The gaff member attachment is designed such that it can engage an object to be cut at an angle and remain therein while an operator pivots the chain saw during a cutting operation.

Abstract: A removable attachment for use with a hand-held tool is disclosed. The tool comprises a housing and a cutting blade mounted therein for continuous reciprocating movement during operation. The attachment comprises a work piece receiving member pivotally mounted to the tool housing. An adjustable clamping member is pivotally mounted to the work piece receiving member. An adjuster, movable between an engaged and a disengaged position, is operably connected to the clamping member for adjusting the clamping member so as to clamp a work piece positioned on the work piece receiving member for operation thereon by the cutting blade. A quick release mechanism is provided for quickly moving the adjuster between its engaged and disengaged positions.

Abstract: A device for cutting pipe includes support structure for contacting a pipe to be cut; an elongate cutting member associated with the support structure defining a loop for enclosing a pipe to be cut; and guide structure for reciprocally guiding the cutting member along a path relative to the support structure, whereby reciprocating the cutting member cuts the pipe.

Abstract: An attachment for a chain saw (100) includes two elongated members (4D) mountable on the opposite faces of the chain guide (102). Each member (4D) has an elongated center portion (6D) configured to be secured to the chain guide (102) in a position closely adjacent to the corresponding face thereof. An angled portion (30) extends laterally outwardly from the outer edge of the center portion (6D). A plurality of spaced apart teeth (12D) project from the angled portion (30) substantially parallel to the chain guide (102) over and beyond the chain (104). Each tooth (12D) has, on an upstream edge thereof, a surface (18D) angled laterally outwardly in an upstream direction to help retain the chain on a path around the periphery of the chain guide (102). The angled surface (18D) is preferably formed by bending the edge of a substantially flat tooth.

Abstract: An attachment for chain saws that provides a pivot point for better cutting leverage and control especially when cutting small tree branches or limbs. The attachment is installed on both sides of the saw chain and has two or more angularly and outwardly extending prongs that pull the limbs into the chain so that they can be more easily cut. Spacers between the chain bar and the attachment provide for proper clearance for the chain and allow easy installation and removal of the attachment. The attachment also is reversibIe so that it can be used for creating a straight cut using a straight edge as a guide and for controlling the depth of a cut when cutting a kerf in timbers or logs.

Abstract: An alignment device for guiding a power saw orthogonally across a board. The inventive device includes a base plate securable along side a support deck of a saw. An alignment member is movably mounted along the base plate and oriented so as to extend orthogonally relative to a blade of the saw. Spring return assemblies bias the alignment member towards a front end of the base plate and against an edge of a board to position the saw in an orthogonal orientation relative to the edge to ensure a straight cut across the board.

Abstract: A compass saw has a lifting rod for receiving a saw blade which extends downwardly beyond a base plate and supported under the base plate in the region of a saw blade back. A supporting element is formed as a sword extending parallel and in alignment with the saw blade. The saw blade is secured from lateral deviation and bending in that the sword is turnable about an axis located above the base plate and extending substantially parallel to the base plate.

Abstract: An aligning mechanism for a hand-held circular saw has a base adapted to be attached to the circular saw. The base has an upper surface and a lower surface. At least two paddles are pivotally mounted about a horizontal axis and movable in unison between a deployed position and an undeployed position. Each paddle when in its deployed position extends below the lower surface of the base and is capable of contacting an edge of the workpiece so that the saw blade is aligned in a predetermined position with respect to the edge. The paddles move in unison toward their undeployed positions as the saw blade engages the workpiece while maintaining the predetermined alignment between the saw blade and the edge.

Abstract: First and second elongated members are mounted on the opposite faces of a chain guide of a conventional chain saw. Each member has an elongated center portion with a rib extending therealong. A plurality of spaced apart teeth project from the center portion substantially parallel to the chain guide over and beyond the chain. The rib at least partially abuts the chain guide face to space the teeth laterally away from the chain. Each tooth preferably has an upstream edge angled laterally outwardly to help retain the chain on a path around the periphery of the chain guide. The angled surface may be formed by beveling or by bending an edge of the tooth. The teeth are arranged in opposite pairs. A spacer may be provided extending perpendicularly between tip portions of the teeth to inhibit bending of the teeth toward the chain. The spacer may be a pin or may be formed by bending the tip of the teeth toward each other to form a blunt outer end.

Abstract: A balancing skid for a tree harvesting machine, which balancing skid is designed to mount adjacent to the cutting assembly beneath the cutting frame of the tree harvesting machine and spaced from the existing blade skid to balance the cutting assembly horizontally and facilitate more accurate and cleaner horizontal cuts of the trees being harvested, with minimum blade warp and tooth damage. The balancing skid includes a steel skid plate characterized by a substantially horizontal plate base and a plate skid extending upwardly from one end of the base plate in angular relationship and terminating in a skid nose. The plate base and plate skid are welded to a base connector and a skid connector, respectively, and the base connector and skid connectors are, in turn, welded to the cutting frame or undercarriage of the tree harvesting machine to securely mount the skid plate on the tree harvesting machine.

Abstract: An attachment for a chain saw is provided for adapting the saw blade to cut small diameter branches without weakening the saw blade holder or causing undesired kickback or jamming. The attachment comprises a pair of L-shaped cutting bars attached on both sides of the saw blade holder and spaced sufficiently apart to accommodate the width of the cutting chain. The cutting bars comprise a support portion and an angle portion, the support portion positioned approximately midway along the length of the saw blade holder and extending along a line parallel to the longitudinal axis of the saw blade holder. The angle portion of the cutting bars projects beyond the lower edge of the blade, and forms a wedge shaped angle or bight between the saw blade attachment and the cutting chain.

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 device in power saws of the type having a motor-supporting body (2) and a guide bar (4) connected thereto, comprising a guide device (5) cooperating with the guide bar and displaceable towards and away from the guide bar along at least one guide member (6,6'). The guide device (5) is connected to the guide member (6,6') only at one end and has its opposite end free so as to form a free space between the free ends (10,4') of the guide device and the guide bar, the guide member (6,6') being connected to the power saw only by the intermediary of the motor-supporting body (2).

Abstract: Method and apparatus for removing windshields, particularly laminated windshields, from motor vehicles during emergency rescue operations comprise an apparatus with a blade, a blade driver for reciprocating the blade, and a portable power source for the blade driver. The blade driver is selectively operated to reciprocate the blade, which breaks and pulverizes the glass and breaks the plastic lamination of the windshield along a predetermined path to circumscribe a portion of the windshield that is to be removed.

Abstract: A guide plate for guiding a power hand tool along a guide rail placed on a workpiece, has a guide channel formed to embrace the guide rail and provided with guide surfaces for sliding along lateral surfaces of the guide rail. The guide channel is formed by at least two elongated bridge-type beads arranged at a distance from one another and by recesses located in a plane and aligned with the beads so as to extend on both sides of the beads following immediately from the beads. The guide channel has a greater clearance dimension in relation to a width of the guide rail. The guide surfaces are formed in pairs on two necks which are provided in the guide channel at a separation from each other with a clearance width which is slightly greater than the width of the guide rail.

Abstract: A light weight electric-powered radial saw intended to cut overhead limbs employs a housing having a forwardly direction U-shaped receiving yoke, and a rearwardly directed fitting which receives an elongated handle. An annular saw blade is rotatively supported within the yoke by a plurality of idler rollers journaled to the housing. An electric motor positioned within the housing has a drive shaft that extends in parallel relationship above the saw blade. A drive transmission device such as a gear is interactive between the drive shaft and the saw blade.

Abstract: A movable and automatic sawing and clamping device for wood, wherein two pipe-like frame portions are separated from each other by a suitable distance. Two sets of horizontal pieces are orthogonal to these portions and are separately provided therebetween. A clamping device can be formed between these horizontal pieces for clamping a saw tool therebetween. The whole clamping framework can be moved by means of a plurality of bottom rollers to cut the workpiece.

Abstract: Objective of the invention is a pruning device for upright pruning of trees, to which pruning device belongs a shaft (1), an at the end (2) of the shaft through an articulated joint fastened support (3), an at the support fastened, rotatable cutting blade (4), an at the support fixed, with the cutting blade parallel running cutting support device (5) for leaning of the upright pruning device against the tree when cutting the branches as well as a with the cutting blade connected power source (6, 7) for the rotating of the cutting blade. When operating the present pruning devices the problem is the fact, that when using them the trunk of the tree is easily damaged, because the cutting is performed too close to the trunk of the tree.

Abstract: An arresting device for force-transmitting fixing of two relatively movable parts, particularly for cutting angle or cutting depth adjustment of electric hand saws, the arresting device has a pin having a radially extending pressing surface for pressing against one of the parts, a clamping element having a pressing surface for pressing against another of the parts and arranged on the pin so that by a relative turning of the clamping element and the pin the pressing surfaces are moved toward one another for producing a clamping and from one another for releasing the clamping. The clamping element is formed as a hand lever having a clamping sleeve and a lever arm extending from the clamping sleeve. The clamping sleeve is turnably arranged on the pin and has a clamping collar extending over the lever arm and provided with a ring-shaped end surface forming the pressing surface of the clamping element.

Abstract: An adapter for use with a circular-type saw for controllably making incisions in a tubular member comprising a base having an elongated slot therein, means for attaching the base to the saw in such a manner that the slot receives a portion of the blade of the saw, and means for removably mounting the saw upon the tubular member in the area of the intended incision. The base has a top and bottom surface and is attached to the saw in such a manner that the top surface of the base faces the saw. The mounting means is attached to and projects from the bottom surface of base. The mounting means has first and second perpendicularly intersecting, substantially V-shaped channels. The second V-shaped channel substantially overlaps the slot. The portion of the saw blade received by the slot is operative within the slot and the second V-shaped channel.

Abstract: A concrete cutting saw is provided for the cutting of grooves in the surface of wet concrete. The concrete saw generally comprises a motor driven rotating cutting blade mounted on a support structure. The concrete saw is supported during cutting by wheels, and has a skid plate with a slot through which the rotating cutting blade passes to cut the concrete. The skid plate is movably attached to the concrete saw and resiliently urged against the concrete during cutting so that it remains in contact with the surface of the concrete surrounding the cutting blade during cutting. The skid plate is constrained into a bowed configuration so that it is substantially flat during cutting. A variable speed transmission is drivingly connected to the wheels to propel the saw across the concrete during cutting.

Abstract: An attachment arrangement is described which converts the reciprocal motion of a reciprocal saw into oscillatory cutting motion of a circular blade. The circular blade is provided between circular sleeves, which limit the depth to which the blade can cut into a substrate. Using this arrangement, wallboard may be cut without reaching studs, wires or pipes situated behind the wallboard.

Abstract: A chain saw safety guard is provided for protecting against accidental contact with the longitudinal side edges of a chain saw cutter bar. The safety guard includes a generally U-shaped guard member having two parallel guard rails which extend to the open end of the U and a cross-piece or cross-member at the closed end of the U. The guard is supported on the cutter bar at its forward or outermost end by means of a track on the bar and a follower coupled to the guard member. The guard rails are supported near the proximal end of the cutter bar on slidable supports which allow the rails to move longitudinally along the cutter bar to retract and expose the cutting edges of the saw. A telescoping version of the guard member, in which the guard rails telescope into a more compact configuration, is also disclosed. A movable track on the cutter bar, in the form of a longitudinal slot through the bar, helps cool the cutter bar.

Abstract: A motor-driven hand circular saw, has a base plate, a motor, a drive housing surrounding the motor, a saw blade provided with saw teeth and being in operative connection with the motor, a saw blade housing accommodating the saw blade, an upwardly movable saw shaft having the saw blade, a hinge arranged so that the drive housing together with saw blade is movable upwardly and downwardly normal to the saw shaft with respect to the base plate for cutting depth adjustment. The saw blade is movable in and out. A turning hinge having a turning axis extends in a feed direction so that the saw blade housing is connected through the turning hinge with the base plate, and there is at least one upper and lower handle with respect to the base plate. The saw blade housing with the saw blade is located at the left and the drive housing is located at the right as considered in the feed direction. The hinge for cutting depth adjustment is arranged at the front side of the base plate as considered in the feed direction.

Abstract: A hand-held power saw has a main housing and two guide housings telescopically interactive with the main housing and having facing open distal extremities. A motor and associated drive pulley are associated with the main housing. Paired idle and alignment rollers are disposed within the guide housings. An endless abrasive wire rope is centrally disposed within the main and guide housings in contact with the drive pulley and paired rollers. The region of the wire rope extending between the facing distal extremities of the guide housings is employed to cut a workpiece.

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 flexible extension for a hand held power tool is disclosed. The extension has a single flexible reciprocating rod to transmit motion generated by the power tool to a cutting tool at the other end of the extension. A handle grip assembly surrounds the extension adjacent the reciprocation tool. In use, the operator holds the power tool in one hand and the handle grip in the other. The extension permits useful work to be done in close quarters or an otherwise inaccessible location.

Abstract: A practical and safe heavy duty hedge, bush and brush cutter having a forwardly mounted dual-sided tine set that comprises a means for readily cutting flexible heavier limbs. The forwardly mounted tine set preferably is part of a comb-like attachment which includes a number of additional dual-sided tine sets that define a plurality of gathering, holding and cutting areas. The attachment is designed so that it can be mounted from one side of a conventional chain saw blade without removing the chain blade from the chain guide and yet provides stopping surfaces on both sides of the guide bar and chain blade of the saw to support severed limbs and branches in such a manner that bias cutting of flexible limbs and shredding of branches is prevented. The comb-like attachment including the dual-sided tine sets defining the gathering, holding and cutting areas for branches to be cut can be installed and removed from one side of the chain saw blade without the use of special techniques or tools.

Abstract: A power saw structure having a pivot provided on a forward lower portion of the housing of the drive for providing a fulcrum on a subjacent surface about which the saw structure may be pivoted so as to safely urge the forward distal end of the saw chain into the subjacent surface while maintaining the chain saw structure supported on the subjacent surface through the pivot. In the illustrated embodiment, the pivot structure is a separate structure secured to the housing of the drive. The pivot structure includes an upwardly extending forward portion for supporting the saw structure on the subjacent surface throughout the full range of swinging movement of the saw in cutting through the subjacent surface.

Abstract: An apparatus arranged for association with a saw plate member, wherein an elongate guide member is slidably and reciprocatably mounted in a parallel orientation relative to a saw blade, wherein the guide member includes a guide plate orthogonally oriented relative to the rotary saw of the organization to effect guiding of the saw blade in an orthogonal orientation relative to a portion of wood to be severed to permit ease and alignment of the saw for cross-cutting of the aforenoted workpiece.