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: An extendible tree trimmer includes an extendible tube unit with a motor and a cutting blade connected to the opposite ends. The tube unit includes a first housing and a telescopic second housing connected by a releasable coupling unit. A first shaft connected to the motor extends through the first housing and second shaft is telescoped with the first shaft and extends through the second housing to the cutting blade. The housings are releasably coupled for telescoped positioning. A rotary bearing supports the shafts in the housings. A gear reduction unit and a slip clutch unit connects the motor to the first shaft. The cutter head includes a rotating cam secured to the second shaft. The cam has a peripheral groove with axially offset portions and with a follower in said groove. The follower is secured to the blade which reciprocates in the plane of the blade. The blade has teeth on the opposed edges to cut with the blade moving toward the housing.

Abstract: Portable, motor-driven cutting device, especially motor saws or hedge-shears with a housing with support handle and operating buttons at the back section and cutting devices at the front section, as well as with at least one operating grip to be set, angled or freely adjustable about a first axis which runs in the main parallel to the cutting plane and which serves to adjust the cutting plane whereby the handle can be adjusted to the housing about at least one additional axis vertical to the cutting plane that locking for the turn and adjusting position about the first axis is effected if facing notches and counter notches of the handle and housing catch form-fit and/or friction tight due to adjusting around the additional axis.

Abstract: A safe means for a cutting mechanism attachable to a remote power source and enclosed within a rigid semi-curved sheath. The sheathed cutting means of the invention is provided with a flexible power transmission means for connection to a remote power source. The flexible power transmission means is comprised of a two-ended blade, one end of which is connected to the power source and the other end of which is capable of acquiring a sharp edge. By means of the rigid slightly curved protective sheath, the blade can be introduced past the dash moldings and garnishings in a vehicle from the inside of the vehicle next to the interior window or windshield so that the cutting blade alone is brought into contact with the polyurethane seal and the seal is quickly and safely severed without breaking the windshield.

Abstract: A device for cutting logs which involves swinging a chain saw about a fixed pivot to bring the chain of the saw into cutting engagement with a log while the log is supported in elevated position the apparatus includes a table having a log supporting top, and a pivoted mounting plate for the chain saw.

Abstract: A quickly detachable guard assembly for the tip of a chain saw guide bar, including a pair of wing plates hinged along one side and urged by a torsion spring to a clasping condition with the guide bar therebetween. A pair of pins projecting from the inner face of one plate pass through openings in the guide bar and are received in holes in the other plate to positively lock the guard assembly to the guide bar. A selectively operable latching arrangement allows the plates to be held apart against the urging of the spring urging to facilitate installation and removal.

Abstract: Safely guides wood into the tip of a chain saw bar and provides stability (you don't have to wave the tip of the saw around before you start cutting at the tip), gives support and dampening of vibration and sound, eliminates rotational kickback, the greatest hazard in using the world's most dangerous tool, can be attachable and removable from a saw bar, or a permanent part of the saw bar. Makes a chain saw an additional tool for tree-trimmers, loggers, homeowners in addition to sawing. With device on saw you can push or pull wood from a tangled up pile and safely position it for cutting. Device eliminates cutting in unsteady positions (off-balance, outstretched arms, one-handed, over-reaching). A chain saw with the device provides dynamic tuning to lessen vibration and sound. There is less chain wear, less sharpening, less bar wear, less fatigue, less chance of Reynolds syndrome, no need for a chain brake to stop rotational kickback, no need for a banana type bar.

Abstract: This invention comprises a focused light attachment for use with a portable power-driven hand saw, particularly a saber saw. The invention comprises a light source such as an electric lamp with a suitable electrical power source and a focusing mechanism for projecting a very narrow beam of light. The light source and focusing mechanism is mounted on the front of the hand saw and is positioned to project its narrow light beam a substantial distance in front of the saw blade so that it can be used to trace or follow a previously scribed saw line. The tracing light can be used in combination with a flood light that is mounted also on the front of the saw housing and positioned to flood the area surrounding the saw blade with illumination. Most preferably, the tracing light and its focusing mechanism are mounted permanently within the housing of a saber saw.

Abstract: A guide shoe attachment for a clearing saw having a shaft defining a centerline, a transmission connected to the shaft including a hub rotatable in a predetermined blade rotation direction about an axis of rotation angled with respect to the centerline, and a circular blade connected to the hub. The guide shoe attachment has an elongate guide member extending radially outward from the hub generally in the direction of the centerline, parallel to and above the blade, providing a guide edge for guiding the saw. It includes a top plate forming a semicircular guard around for blade with fittings for connecting the attachment to the transmission at a position above the blade and forwardly of the transmission. The guide member includes a skid aligned with the guide edge. The guide edge is offset from a centerline of the clearing saw in the direction of blade rotation so that a tree contacting the guide edge is sawn within a kickback zone at the front of the clearing saw.

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, a blade, a base, and a switch to activate the motor and the blade. The mechanism includes an aligning device for aligning the saw. The aligning device and the saw move forwardly together and in unison during cutting movements of the saw. Such aligning device has an operable position and an non-operable position, such operable position being for positioning at least a portion of the aligning device below a saw base for engaging a work piece and the non-operable position being for positioning the aligning device up and away from a work piece. In one embodiment of the invention, an electrical solenoid is employed to move the aligning device, such solenoid being connected to the saw switch. Another embodiment of the invention employs a manually activated aligning device.

Abstract: A handle and skid assembly for attachment to the saw bar of a chain saw. A handle component extends upwardly and rearwardly from the skid assembly and includes a pair of handgrips. The ground engaging skid assembly includes forwardly directed arms with one having an article engaging edge which guides the saw chain diagonally into cutting engagement with the article. An open area defined by the remaining arm receives a portion of the sawed article. The two-piece skid assembly includes protective flanges adjacent the runs of the saw chain.

Abstract: A clearing saw comprises a circular saw blade which is rotatable relative to a portable frame and whose periphery is at least partly exposed to permit sawing and cutting through a tree-trunk. With the frame of the saw there is associated at least one arm which is pivotal on a joint and provided at its free end with an abutment member located outside the periphery of the saw blade and adapted, when desired, to be applied against another tree-trunk adjacent the trunk to be cut, in order during cutting of the first trunk to positively maintain the saw blade at a distance from said other trunk.

Abstract: A chain saw attachment for mounting a chain saw used to cut reclined logs lengthwise includes a substantially right parallelepiped frame which straddles but does not contact the log. The frame is supported by a supporting surface independent of the log and cooperates with mounting means for rigidly mounting the chain saw in a cutting position. The frame is mounted on feet which permit the frame to be slid along the supporting surface, typically the ground. The mounting means includes two sets of clamping members for gripping opposite ends of a saw bar of the chain saw. Each set is supported by a vertical chain saw support member that is vertically adjustable to vary the level of the chain saw's cutting plane relative to the log. Each chain saw support member mounts a nut that is engaged by a threaded rod, rotation of which causes the chain saw support member and hence gripped chain saw to move vertically. Both threaded rods mount respective sprockets which are interconnected by a drive chain.

Abstract: A device is disclosed to make slits through the bark of a log with a chain saw. The chain saw has a blade with a chain which runs over its extreme free end which is preferably semicircular in shape. Rotatable guide rollers are mounted on both sides of the extreme end of the blade and are preferably coaxial with the semicircular end. The lateral surfaces of the guide rollers face each other and guide rollers in operation hold the chain of the chain saw in contact with a log to be cut for cutting slits of a given depth through its bark.

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 of 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 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: This invention relates to a safer and better power tool for cutting wood. It combines a power driven bar type chain saw and a work positioning means to make the saw also a tool for moving wood to be cut into a better and safer position for cutting before cutting. There are a very large number of chain saw accidents. These accidents are primarily caused by inexperienced operators cutting wood from an unsafe position. They over-reach and otherwise unsafely cut wood primarily because they don't take the time to set their saw down and with their hands move wood to be cut into a safe position before cutting. They haven't had a tool with them to use for safely moving wood before they cut it. The invention herein makes the bar type chain such a tool in addition to being a saw.

Abstract: The disclosure is of a guide which may be fitted to the cutting bar of a hand-held chainsaw, in such a manner that the chainsaw and guide may be used together for the purpose of sawing dimensioned lumber from logs. The guide is adaptable to any chainsaw of the hand-held variety. The advantages of the milling guide of the invention resides in its ability to guide the kerf of the chainsaw with relative ease, and its ability to provide leverage support to help press the cutting teeth of the chainsaw into the log, and its simplicity of operation and portability compared to other devices of this type.

Abstract: A chain saw has a motor, a cutting chain and a guide bar for the chain. An opening is formed in the guide bar. A flexible bladder is positioned in the opening and located on the guide bar. Fluid can be inserted into the bladder so that the bladder may be expanded. The expanded bladder can topple a cut tree without the necessity of removing the chain saw from the tree.

Abstract: An attachment for a direct drive gasoline or electric powered chain saw for delimbing, thinning, pruning and brushing. The attachment comprises a rigid bar of round cross-section which is secured to the blade of a chain saw at a point spaced a short distance towards the handle from the tip of the blade. When so secured, the bar has a straight portion traversing the flat of the blade at an angle to the longitudinal axis of the blade, extending forwardly and downwardly with respect thereto and upwardly and rearwardly beyond the upper edge of the blade. The bar lies substantially in a plane parallel to the plane of the blade. A second portion of the bar projects beyond the lower edge of the blade and is bent in a gradual curve through an arc radiaus so that its end is parallel to the longitudinal axis of the blade. The bar is secured to the flat of the blade by an appropriate securing device and is preferably spaced from the surface of the blade.

Abstract: A hand held apparatus comprising an engine drivingly connected through a chain and sprocket to a rotatable drum. The drum has a spiral groove formed therein which mounts a chain saw-type chain. The drum is mounted on a frame together with a cradle which supports the drum in surface contact relation to a log to be debarked. The cradle pivots on the frame and contains a pair of concave rollers which contact the log.

Abstract: Apparatus for in-forest cutting of lumber from felled logs is provided. The apparatus comprises a frame mounting a pair of wheels around which is trained a band saw blade. A chain saw engine is releasably connected to the frame and is coupled to one of the wheels for driving the saw blade. A carriage is mounted to the frame and is adapted to extend lengthwise of the log to enable the frame to be advanced along the log as the saw blade cuts. The carriage has a series of resilient rollers which cooperate with blade guide and stabilizer assemblies to provide a straight cut. Handles are provided at opposite ends of the frame to enable workmen to mount and to dismount the apparatus and to advance the same along the log.

Abstract: The specification discloses a motor housing, with a handle of the circular saw type, and a cantilever saw bar carrying a saw chain is secured to the housing in a position extending downwardly from a guide foot of the housing. A retractable guard bar normally is held in a position holding a guard loop around the nose end of the saw bar, the guard bar being positioned at the rear of the saw bar. The guard bar is mounted slidably on the motor housing, and, when a latch is manually released, the guard loop may be pushed up along the saw during a boring (nose cutting) operation. In an alternate embodiment, a foot attachable to a foot of a circular saw motor carries a saw bar and a guard bar with a guard loop surrounding the nose end of the saw bar.

Abstract: An attachment for a direct drive gasoline or electric powered chain saw for delimbing, thinning, pruning and brushing. The attachment comprises a rigid bar of round cross-section which is secured to the blade of a chain saw at a point spaced a short distance towards the handle from the tip of the blade. When so secured, the bar has a straight portion traversing the flat of the blade at an angle to the longitudinal axis of the blade, extending forwardly and downwardly with respect thereto and upwardly and rearwardly beyond the upper edge of the blade. The bar lies substantially in a plane parallel to the plane of the blade. A second portion of the bar projects beyond the lower edge of the blade and is bent in a gradual curve through an arc radians so that its end is parallel to the longitudinal axis of the blade. The bar is secured to the flat of the blade by appropriate securing means and is preferably spaced from the surface of the blade.

Abstract: A mill for guiding the cutting of a chain saw includes a mill frame comprising a pair of longitudinally spaced, parallel members joined by a plurality of rod-like runners extending orthogonally therebetween and joined to the lower surfaces thereof. A chain saw bar may be secured subjacent to the mill frame and selectively spaced therefrom by a pair of bolts extending through the chain saw bar to the mill frame, and a plurality of tubular spacer members secured on each bolt between the bar and the mill frame. The runners of the mill frame ride on a plank secured on a log or on a previously cut surface to guide the chain saw in making planar, longitudinal cuts through a log. A slider assembly is also provided, clamped to the longitudinal members of the mill frame, and adapted to secure the chain saw in spaced relation therefrom with the chain saw bar extending downwardly therefrom.

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: An accessory for an electric router which facilitates edging, trimming, groove cutting, and the like, on small workpieces. The accessory features a two tier construction, the workpiece being positioned on a work table pivotally mounted to the lower tier, while the router is vertically mounted on the upper tier. The upper tier is vertically movable with respect to the lower tier to accommodate the workpiece therebetween. The upper tier comprises a pair of parallel guide rails along which the router may be slidably moved through the workpiece. In an alternate mode of operation, the router may be securely clamped to the guide rails and the workpiece pushed along the work table through the router bit by a safety tool.

Abstract: A mill for guiding the cutting of a chain saw includes a pair of rail members, each rail member comprising a length of C-channel, with a lip joined to the distal edge of one leg of the channel and extending parallel to the web of the channel. At least one hole is disposed in the web of each channel length, and a long bolt extends through the hole to join the rail members in parallel disposition. A plurality of rectangular spacer members of various thicknesses are each provided with a hole therethrough to receive the bolt. The bolt extends through a hole in the chain saw bar near the power head to assemble the rail members and spacer members to the chain saw. The lip of one rail member acts as a rip fence riding on a previously cut edge, with the spacers employed to join the chain saw bar to the rip fence at a selected spacing interval therefrom.

Abstract: A guard for the saw chain of a chain saw is provided by a group of "U" shaped channel members which are disposed in telescoping relationship over the upper reach of the saw chain and another group of similar channel members which are disposed in telescoping relationship over the lower reach of the saw chain. The channel members are captured and retained in the contour plate around which the saw chain is entrained. Snap-out buttons limit the maximum extension of the telescoping sections. Arrangements of springs urge the telescoping sections forwardly so that they extend over the saw chains. The snap-out buttons also provide bias in addition to that provided by the springs against retraction. Bars are pivotally mounted on the forwardmost of the channel members. These bars pivot against stops when they engage the log or other work to be sawed. The force applied to the telescoping sections through the bars retract the sections and gradually exposes the saw chain.

Abstract: An adapter for use attached to a chain saw for trimming hedges and cutting brush which includes a mounting member adapted to be fixedly secured to a chain saw guide or blade by mounting in the normally available bolt holes at the forward and rearward sections of the guide, the adapter further including a plurality of dividers forming a plurality of dividing channels therebetween in which the individual sticks or hedge members are gathered and compressed for cutting, the dividing channels being formed by dividing surfaces on the adjacent sides of said dividers to facilitate grouping of the hedges, the dividers further including a gathering surface positioned adjacent a stopping surface which is formed by the mounting member such that the gathering surface and the stopping surface are at an acute angle with respect to one another of preferably less than 90.degree.

Abstract: A mill for guiding the cutting of a chain saw includes a mill frame comprising a pair of longitudinally spaced, parallel members joined by a plurality of rod-like runners extending orthogonally therebetween and joined to the lower surfaces thereof. A chain saw bar may be secured subjacent to the mill frame and selectively spaced therefrom by a pair of bolts extending through the chain saw bar to the mill frame, and a plurality of tubular spacer members secured on each bolt between the bar and the mill frame. The runners of the mill frame ride on a plank secured on a log or on a previously cut surface to guide the chain saw in making planar, longitudinal cuts through a log. A slider assembly is also provided, clamped to the longitudinal members of the mill frame, and adapted to secure the chain saw in spaced relation therefrom with the chain saw bar extending downwardly therefrom.

Abstract: A device to produce lumber from logs, wherein the device is arranged to be attached to a portable chain saw so as to be adjustable to provide various board thicknesses. The device comprises a frame structure having a plurality of laterally spaced support struts secured in spaced relationship to each other by longitudinally arranged rod members. At least two rod members include front and aft drive rollers which are operably connected by a drive-train system including a power motor arrangement whereby the device, along with the chain saw, is continuously fed in a longitudinal cutting direction along the length of the log being cut. The thickness of the lumber being cut is determined by the setting of a thickness control dial unit operably mounted in conjunction with rack and pinion members, wherein the rack members are directly attached to the chain-saw bar.

Abstract: A log sawing attachment for a chain saw which includes a moveable guide frame which can be clamped to the cutter bar of the chain saw and can be variably spaced therefrom. The frame guides the chain saw to make pre-selected depth of cut along the log being sawed to form a uniform thickness board.

Abstract: A standard chain saw of small construction having a guide bar approximately fourteen inches in length, preferably driven by an electric motor and provided with an adjustable guard which covers substantially all of the chain except for the tip end. The end portion of the chain is used for carving statues and engraving with a sunken design in intaglio.

Abstract: A machine for the cold-sawing of steel plates in which the feed movement between the circular saw blade including its drive housing and the workpiece, in essence the steel plate, is effectuated in a horizontal direction. The saw unit, which consists of the saw blade and its drive housing is so guided in a vertical direction as to be freely movable in this direction, and is provided with means which support themselves on the workpiece in immediate proximity to the saw cut in a manner whereby the saw blade does not enter essentially deeper into the workpiece than would be necessary to divide the latter. During sawing, the saw blade should project beyond the lower surface of the workpiece by only a fraction of a millimeter.

Abstract: A new sawing arrangement and a new attachment for use in such an arrangement. An elongated rigid power train is interposed between the power unit and the cutting head of a chain saw. It is secured to and chain driven by the former, and to it the latter is secured in driving relation.

Abstract: A lumber making attachment comprising a saw guide for use with a portable chain saw having a frame with a crossmember assembly mounted thereon which is adapted to slidably engage a guide member positioned on the lumber being cut or to engage an edge surface of the lumber itself. Said frame also having a means for adjustably securing said frame to the saw bar of a chain saw in a manner whereby in operation the cutting elements of said chain saw will engage a portion of the lumber being cut at a predetermined angle and along a predetermined course substantially parallel to the axis of said guide member or said lumber edge. Support means are provided to permit substantially parallel cuts of uniform thickness across the entire width of said lumber.

Abstract: A portable power saw apparatus is disclosed having an endless saw chain driven about a bow bar by an internal combustion engine. The apparatus includes a pair of transversely spaced legs respectively secured to the chain guide adjacent the outer end thereof and extending downwardly therefrom. The legs provide a ground-engageable abutment to support the outer end portion of the chain guide and saw chain, and they also define a size guage determinative of the largest diameter object acceptable between the legs for severance by the saw chain. Skid means secured to the handle structure of the apparatus is oriented at substantially the same elevation as the legs and forms a ground-engageable means therewith to support the saw apparatus in a generally horizontal orientation in certain operating modes.

Abstract: A spiked-bumper mounted to a forward end portion of a main body of a chain saw includes a reference mounting hole formed at one longitudinal end portion of the spiked-bumper, and mounting adjusting holes formed at a longitudinal opposite end portion of the spiked-bumper in positions located on an arc constituting a part of an imaginary circle centered at the center of the reference mounting hole for adjusting the position in which the spiked-bumper is secured to the forward end portion of the main body of the chain saw.