Abstract: An electrical manual power saw includes a machine housing that has a housing shaft and a housing head (102) holding an interchangeable tool, and an electrical drive for driving the tool in an oscillating reciprocating motion. The housing shaft, for the sake of attaining an ergonomically defined gripping position in the vicinity of an on/off switch, has a rod-like shape, and in the transition region between the rod-shaped housing shaft and the housing head, a construction is provided. The on/off switch is disposed laterally offset on the housing head, below the axis of the shaft in such a way that when the constriction is grasped by a hand of a user the thumb of the grasping hand rests on its actuation knob.

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 pattern designer shaver system that includes a base unit for driving a number of user attachable trimmer and shaver accessories of varying widths.

Abstract: An implement for trimming grass and weeds, and for blowing clippings and debris. The implement consists of a rotatable housing having an outer wall; at least two fan blades, each of the fan blades having an inner end and a outer end; and at least two slide channels interconnecting each of the fan blades with the rotatable housing. The slide channels allow the outer ends of the fan blades to alternately extend from the outer wall of the rotatable housing to a fully extended position, and retract toward said outer wall to a fully retracted position. A weed trimming line is fixedly attached to and extends outwardly from the rotatable housing for performing weed trimming as a function in addition to debris blowing.

Abstract: A sanding block attachment for a jig saw including a block portion adapted for securement to the reciprocating blade of the jig saw. The block portion has a generally rectangular configuration. The block portion is defined by a long front face, a long rear face, a short top face, a short bottom face, and long opposed side faces. A sheet of sandpaper is removably secured to the long front face of the block portion.

Abstract: A razor blade tool relating to overcoming single use shortcomings of current utility knives allows a user to select multiple razor blade positions. Each razor blade position allows a razor blade tool to be utilized for a different purpose, such as scraping, case cutting, twine cutting, and as a knife. Additional razor blades are stored in a razor blade tool in a manner that prevents the sharpened edges of razor blades from contacting side-walls of the storage area so that stored razor blades remain sharp and undamaged.

Abstract: A coping saw attachment for a hand held power jig saw which is capable of being quickly and easily attached to a standard hand held power jig saw. The coping saw attachment for a hand held power jig saw generally includes a substantially “c-shaped” coping saw blade support member which supports a standard coping saw blade, a handle which is removably attached on either side of the substantially “c-shaped” coping saw blade support member and a coping saw blade adapter which facilitates the attachment of a standard coping blade into a hand held power jig saw blade chuck.

Abstract: A power tool system has detachable and interchangeable implements and driving sources. The interchangeable implements and driving sources use a housing having common mating interface to selectively assemble a power tool having the desired characteristics. A latch is used to hold a selected implement and driving source in functional engagement. An adjustable bale handle provides a comfortable and safe handhold for various configurations of the interchangeable implements.

Abstract: A hand-held circular saw which is characterized by a gasoline-powered, trigger-operated blade drive unit connected to a conventional circular saw by means of a specially-designed adaptor. In a preferred embodiment the circular saw is characterized by a circular saw blade rotatably mounted in a saw housing which is connected to a drive shaft housing and adjacent gear housing. The adaptor is secured inside the drive shaft housing, and the blade drive shaft extends from connection to a blade-driving gear train inside the gear housing, and through the adaptor and projects from the drive shaft housing. The blade drive unit receives the protruding blade drive shaft, and is fitted with an attachment collar which removably receives the adaptor to connect the blade drive unit to the circular saw. The gasoline-powered circular saw is lightweight, efficient and suitable for outdoor home, farm or commercial use.

Abstract: A feeding and picking device having a rotating feeding device that is rotated about a vertical axis. The device is able to work in fields not planted in rows and is designed to grasp plant stalks and feed them into a picking device. The picking device comprises a snapping channel formed by snapping bars under which is located at least one snapping roll. The feeding device comprises a disc having fingers that overlap the snapping channel. The feeding device is therefore designed to transport the plant throughout the effective length of the picking device.

Abstract: A pencil sharpener bit for use in sharpening pencils utilizing a portable electric drill, any motorized hand tool supporting the use of a chuck assembly or any hand held tool accepting tips with hexagonal ends is disclosed. The sharpener assembly rotates in a standard clockwise motion while the pencil is held by hand in a stationary position. The sharpener frame is of sufficient size to completely encase the point cutting assembly. The said point cutting assemble is set at a sufficient depth to remove successive layers of a pencil resulting in a conically shaped point. The sharpening assembly removes only enough material to bring the pencil to a sufficient point of sharpness. A slot is provided for material dispersal and collection in an outer cover. The housing of the sharpener is cylindrical in shape and is attached to a hexagonally shaped shaft bit intended for use with any standard chuck with three jaws or teeth.

Abstract: A pipe beveling attachment for a rotary power tool including base means, an arbor sleeve adapter assembly for mounting the base means to the rotary power tool, bearing means in the base means for securing a shank of a pipe beveling rotary cutting tool, and alignment and guide means for cooperatively engaging a pipe wall of a pipe end to be beveled and for accommodating different diameter pipes including removable pins on each side of the pipe wall to provide a slidable cooperative engagement of the base means and pipe beveling rotary cutting tool with the end of the pipe to be beveled. The attachment includes a safety shield for an operator's protection and an optional flexible rotational stopper for preventing the attachment assembly from rotating when the power tool is at idle, generally a circular power saw. An alignment pin extending from the end of the arbor sleeve adapter assembly juxtaposed the power tool is optionally included to engage an aperture in a circular power saw retainer washer.

Abstract: A hand-held reciprocating power tool, such as a reciprocating saw, wherein the angle of the reciprocation motion axis with reference to the longitudinal axis of the power tool motor housing is adjustable. Within a motor housing there is a motor driving a motor shaft which rotates on a motor shaft axis generally along the longitudinal axis. A nosepiece includes a nosepiece base portion fixed to the motor housing, and a nosepiece movable portion rotably mounted to the nosepiece base portion. The nosepiece moveable portion can be positionally adjusted relative to the nosepiece base portion over an angle of at least 180.degree. by rotation on a nosepiece axis which is perpendicular to the motor shaft axis. A reciprocating element is supported by the nosepiece moveable portion.

Abstract: A handling device for a power working machine provided rotatably with a rear handle portion, wherein the handling device is constructed such that the rotation of the rear handle portion is always locked whenever the throttle lever for actuating control member of the prime mover is manipulated, and such that, when the rotation of the rear handle portion is once engaged and fixed, a locking mechanism is actuated to lock the rotation of the rear handle portion. The handling device comprises a throttle lever, attached rotatably to the device and designed to actuate a control member of the prime mover, and a handle-engaging member, designed to be engaged with a mount base of the handling device so as to lock the rotational position of the handling device relative to the mount base.

Abstract: In an attachment to a multifunctional tool, comprising a construction that frames are projected on a cylinder head, a yoke having a fixed die and a latch are pivotally supported by the frames, and a movable die is fitted to the piston head opposite to the fixed die, or frames are projected on a cylinder head of the body of the tool, two props are pivotally supported by the frames, and working parts of the tool are pivotally attached to the two props, sliding grooves are formed on inside surfaces of the yoke and latch and, the attachment possesses a mechanism for attaching or detaching auxiliary dies to inside surfaces of the fixed die and movable die, or the attachment is attached to inside surfaces of the both props pivotally supported by the frames at the position of the piston head; sliding grooves are formed on the inside surfaces of the props to make a movable die slide by being linked to the slide of the piston head; and the attachment possesses a link mechanism which is in contact with a contact surfac

Abstract: Attachments of the present invention are generally attached to a power drill that has a chuck with an axis of rotation. The attachments include a circular cutting blade attached perpendicularly to a shaft that is removably interconnected with the chuck and a stabilizing handle rotatably attached to and supporting the shaft between the drill chuck and the cutting blade. The stabilizing handle extends substantially transversely to the axis of rotation. The circular cutting blade may be a replaceable cutting blade or it may be integral with the shaft. The extension of the stabilizing handle may include a pivot and the gripping section if the stabilizing handle may include a hand guard. The stabilizing handle may also include a depth gauge mounted perpendicularly to both the shaft and the stabilizing handle. The stabilizing handle may also be two connected handle portions.

Abstract: A cutter blade retaining plate having a fitting hole to be used for attachment onto a drive shaft in its center position, in which, on both sides of the fitting hole, a boss portion is provided to which cutter blades having different diameters may be fitted. The various cutter blades, each having a different diameter fitting hole, can be easily attached to the drive shaft by changing the orientation of the cutter blade retaining plate or by pressably sliding the blade onto the boss portion, thereby compressing a moveable boss portion. The invention thus eliminates the need for use of differing collars with cutter blades having differing diameter fitting holes, thereby also reducing the incidence of loss of the collars.

Abstract: Attachments of the present invention are generally attached to a power drill that has a chuck with an axis of rotation. The attachments include a circular sawblade attached perpendicularly to a shaft that is removably interconnected with the chuck and a stabilizing handle rotatably attached to and supporting the shaft between the drill chuck and the sawblade. The stabilizing handle extends substantially transversely to the axis of rotation. The circular sawblade may be a replaceable sawblade or it may be integral with the shaft. The extension of the stabilizing handle may include a pivot and the gripping section if the stabilizing handle may include a hand guard. The stabilizing handle may also include a depth gauge mounted perpendicularly to both the shaft and the stabilizing handle.

Abstract: The invention relates to a splinter shield comprising a protective cover (20) for a substantially plane, circular tool, e.g. a cutting wheel (6), circular-saw blade or the like, which is rotatable about a rotation axis (31) and which, together with the splinter shield, can be fitted on a tool carrier (5) on a manually operated machine (1), which protective cover (20) is intended to house a section of the tool and has a through-running fixture hole (27) for the splinter shield on the side facing the tool carrier. What distinguishes the invention is that the side of the protective cover which contains the fixture hole is double-walled around the fixture hole, the walls (30, 60) in a region around the fixture hole being arranged at a distance (H) apart.

Abstract: A portable power tool includes a power module and a tool module, e.g., a chain saw module which is attached to the power module and which can be readily exchanged with another tool module, e.g., a cutter module. The power module includes a power source such as two-stroke gasoline engine with a drive shaft. To facilitate rapid exchange of tool modules, there are two or more torque transmission members such as a pulley and a sprocket wheel on the drive shaft, so that different tool modules can be attached to the power module without removal and replacement of the torque transmission member.

Abstract: There is a need for an efficient cutter to cut openings in drywall for electrical switch and outlet boxes. Existing cutters typically press out an opening and consequently require great hand supplied force and use of a back plate which must be positioned behind the wallboard.

Abstract: A hand-held reciprocating power tool, such as a reciprocating saw, wherein the angle of the reciprocation motion axis with reference to the longitudinal axis of the power tool motor housing is adjustable. Within a motor housing there is a motor driving a motor shaft which rotates on a motor shaft axis generally along the longitudinal axis. A nosepiece includes a nosepiece base portion fixed to the motor housing, and a nosepiece movable portion rotably mounted to the nosepiece base portion. The nosepiece moveable portion can be positionally adjusted relative to the nosepiece base portion over an angle of at least 180.degree. by rotation on a nosepiece axis which is perpendicular to the motor shaft axis. A reciprocating element is supported by the nosepiece moveable portion.

Abstract: The present invention describes an adaptor primarily intended for attaching a door jamb saw blade to a reciprocating tool. The adaptor includes a rigid and generally U-shaped structure having first and second substantially parallel and generally opposed side portions extending from a central base portion, with the first side portion extending a predetermined length from the base portion and having a predetermined thickness and a predetermined width, the second side portion extending a second predetermined length from the base portion and having a substantially planar surface along a side thereof distal from the first side portion, with the distal surface being generally normal to a plane defined by substantially parallel axes extending through the first and second portions.

Abstract: A battery powered tool includes a housing adapted to carry a battery. A shaft having first and second ends is connected to the housing at the first end thereof. A first mechanical joint is adapted for rotatably receiving and supporting an attachment. The first mechanical joint is mounted at the second end of the shaft. The first electrical connector contained within the first mechanical joint is adapted to cooperate with a second electrical connector in the attachment to provide electric thereto. A first electrical conductor extends within the shaft from the housing to the first electrical connector for carrying electric current from the battery to operate the attachment. A second electrical connector engages with the first electrical connector, and is connected to a boom. A second electrical conductor extends within the boom, and the other end of the boom carries a hedge trimmer, a line trimmer, a pruner, a blower or an extension.

Abstract: The apparatus of the present invention is configured to cut a selected object at a location which is remote from a user. The apparatus comprises a saw having cutter teeth configured for cutting the selected object, a connector configured to attach to a mounting point generally above the location on the selected object, and a flexible line extending from the connector to the saw for positioning the saw adjacent the location on the selected object. The apparatus may also comprise a radio transmitter positioned within reach of the user, a servomechanism operatively connected to the saw for actuating the saw, and a radio receiver positioned remote from the radio transmitter for activating the servomechanism in response to the signal. Further, the apparatus may include a pole extending from the saw to guide the saw.

Abstract: A new Universal Chop Saw for utilizing a normal grinding tool for cutting and drilling objects in hard to reach areas by simply coupling the present invention to the grinding tool and adjusting the present invention to the required angle. The inventive device includes a protecting means to protect the user from injury during utilization of the present invention, a swivel arm allowing the user to adjust the present invention to the required angle, a drive belt means, a drill bit coupler and a cutting means.

Abstract: A powered lawn and garden tool for trimming and edging lawns is specially adapted for shipping and storing in collapsed state for reduced package sizes includes a single length of tube that is received within an extended neck portion of a motor housing. During final assembly, the tube is extended and locked into position in a single motion. The housing is further adapted to be rotated one hundred eighty degrees on the tube when it is extended and includes a button-operated mechanism for releasing the tube for rotation and locking it in either of two positions, one hundred eighty degrees apart.

Abstract: A powered bone cutting saw is used from within the intramedullary canal of a bone. A cutting blade is inserted through a bored intramedullary canal to a predetermined cutting depth. A motor is coupled to the cutting blade to rotate the cutting blade. The blade is extended to a cutting position and operated by a surgeon to cut the bone radially from the inside outwardly, transversely, to the intramedullary canal. Gearing selectable by the surgeon permits the blade to oscillate. The motor can also be coupled to a reamer tip for boring the intramedullary canal. The apparatus, including the reamer tip, can be cannulated to accept a guide wire.

Abstract: A compressed air safety gun for use underwater, having a handle and an elongate barrel extending therefrom, the handle including a valve therein being operable between open and closed position, by a trigger on the handle. A substantially flexible pneumatic hose connects at opposite ends between the handle and a pressurized air supply source for directing pressurized air flow to the valve in the handle, wherein operation of the trigger to open valve serves to direct the flow of pressurized air through the gun barrel and out from a distal end thereof. A coupling connectable to the distal end of the barrel is structured and disposed for attachment of various tools thereto, such as a nozzle for directing the flow of air from the barrel end.

Abstract: A multipurpose utensil which comprises a tubular casing and a pair of spoons. Each spoon includes a small, shallow bowl having a rim thereabout which is on an end of a handle. The spoons are positioned with the rims face to face, allowing the handles to be inserted together into a first end of the tubular casing, with the bowls together forming an enclosed compartment.

Abstract: Hair cutting apparatus including a housing and laser apparatus disposed in the housing and arranged to provide a beam of light impinging on hair to be cut, the beam of light being operative to cut the hair.

Abstract: A utensil holder for infants and toddlers is made up of a generally triangular handle having a hollow gripping area and a utensil-supporting portion at one side of the handle which converges forwardly and terminates in a socket end portion for insertion of a complementary shank end portion of a utensil. In another preferred form, an eating utensil is disposed with its eating surface facing in a direction substantially parallel to the longer dimension of the handle so that when the handle is grasped and held in a palmar, upright position by the infant, the eating surface can face upwardly for placement of food thereon and insertion into the infant's mouth. In the alternative, the utensil can form a permanent part of the supporting portion at one side of the handle but in either form the handle is longer in a direction transverse to the direction of entry of the utensil into the infant's mouth than the longest dimension across the infant's mouth to prevent lodging of the handle therein.

Abstract: A power hoe attachment for attachment to a power grass trimmer or the like includes a blade member of a continuous length having a first end attached to a disc shaped member and a second end attached to the disc shaped member. The disc shaped member contains a means for securing the same to a power grass trimmer. When affixed to the power grass trimmer, the power grass trimmer will be converted into a power hoe and the blade member used while rotating to turn soil.

Abstract: An elongate pair of spaced support flanges is arranged in a parallel coextensive relationship pivotally mounting an elongate housing at a first end of the flanges, with the second end of the flanges having a support yoke oriented at an acute angle relative to the support flanges, such that a drill member mounted onto the yoke between the support flanges is in operative communication with the elongate housing, with the elongate housing mounting a circular saw at an obtuse angular orientation relative to the drill to provide for angled cutting and clearance during an angle cut.

Abstract: For safely opening drums that may contain hazardous materials, a remotely controllable drum opener attachment is provided, which is powered by air or electricity from a distance by means of a long power cord. The attachment is clamped in position on the drum by an appropriate frame.

Abstract: A split folding handle hatchet is disclosed that in a first position can be used as a hatchet and in a second position can be used as an Eskimo ulu-type of scraper. The hatchet shank is securely held by unique raised surfaces on the inside of each handle portion when the handle is gripped by the woodsman.

Abstract: An ice auger conversion apparatus has an ice auger support and steering mounting member and a winch connected to the ice auger support and steering mounting member. A ring conversion member detachably connects to the winch. A winch drive motor connects to a driven end of the winch. A winch drive socket conversion member connects to a driving end of the winch. One end of a drive conversion adapter member removingly connects to the winch drive socket and another end of the drive conversion adapter member removingly connects to an ice auger shaft member. An ice auger removably connects to the ice auger shaft member. The ice auger support and steering member also has a mounting plate attached to the winch and a steering handle member attached to the mounting plate. A power circuit attaches to the steering handle member to provide power to the winch drive motor. The power circuit has a power circuit actuation switch and a power source.

Abstract: A hack saw attachment for converting a power driven saber saw or other reciprocable tool to a power driven hack saw includes a plate having a hack saw frame fixed perpendicular thereto. The sole plate of a saber saw is provided with openings for releasable connectors whereby the plate of the attachment is easily connected to the saber saw sole plate. The hack saw frame carries guides at its inner and outer ends, the inner end of the blade passes through the inner guide for attachment to the saber saw arbor. The outer guide carries a second arbor for the outer end of the blade and a spring acts on the outer arbor to ensure proper tension of the hack saw blade during cutting. The hack saw frame carries a handle to facilitate manual reciprocation of the hack saw as it is also reciprocated by the saber saw drive to ensure even wear of the hack saw teeth along the length of the blade.

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 cutter knife including an upper cover, a lower cover engaged with the upper cover to form a handle, a knife holder force-fitted with a front end of the lower cover and having a slit and a threaded recess, a knife partly inserted into the knife holder through the slit of the knife holder, a knob threadedly engaged with the recess of the knife holder, and a tail seat engaged with a rear end of the handle and having a slit.

Abstract: The combination of: a) a portable vacuum unit useable independently in a portable vacuum mode and having a housing defining an intake opening into which debris to be picked up is drawn and an outlet opening in communication with the intake opening, and structure for developing suction at the intake opening and for directing debris drawn through the intake opening to the outlet opening for expulsion thereat; and b) a mobile support for the portable vacuum unit and having a frame and structure on the frame for facilitating movement of the mobile support against and relative to a subjacent surface carrying the mobile support. The combination further contemplates cooperating structure on the mobile support and portable vacuum unit for releasably holding the portable vacuum unit in an operative position on the mobile support wherein the vacuum unit intake opening is positioned to pick up debris on a subjacent surface on which the mobile support is carried.

Abstract: A multi-purpose yard maintenance apparatus consisting of a sickle-bar mower, a sickle-bar hedge trimmer and a garden tiller. The apparatus comprises a gasoline engine and a handle assembly having a pair of handles The apparatus further comprises a sickle-bar frame assembly having handle mounting means, sickle-bar hedge trimmer mounting means and a pair of wheels. Also included is a tiller housing assembly having handle mounting means, engine mounting means and a set of tines Finally, a sickle-bar hedge trimmer assembly having a housing, a engine mounting means, a pair of handles and a sickle-bar cutting assembly is provided to complete the components of the apparatus.

Abstract: A sawing device is attachable to an electric hand drill. The hand drill can be operated by either alternating current or direct current, using a battery. The battery operated drill eliminates the need for electrical cords, so it can be used anywhere. The saw bar may be made of material such as plastic that requires no lubricating oil, is lighter and less abrasive than conventional metal saw bars. There is also a non-metallic insert that will attach to a metal saw bar. This insert may go into the conventional metal saw bars with the same advantages as above. The hand drill rotation is transferred through a connecting shaft to the sprocket that drives the cutting chain, which travels on a chain bar with a single sprocket.

Abstract: A power take-off system for attachment to the elongated bar of a chain saw. A shaft is rotatably carried by a housing which is attached to the bar of the chain saw. A gear is carried on the shaft and is located in a transverse aperture in the bar such that the gear is driven by the nose sprocket in the bar. The housing serves as a guard over the chain on the bar also. The power take-off system may be provided as a self-contained integral unit which replaces the existing cutting bar on the chain saw.

Abstract: A belt tension system for a power tool such as a demolition saw. The system includes a driven gear and a drive gear. The drive gear is orientated perpendicular to the driven gear for more convenience access to adjust the driven gear and, hence, adjust the drive belt. The driven gear can include a second member movably connected to a first member. The second member has a threaded portion and a shaft portion. The first member has helical grooves to interact with the drive gear and a center hole with the second member shaft portion slidingly located therein. The first member can axially rotate the second member when it is axially rotated.

Abstract: There is disclosed a power-driven chain saw converted from a stripped-down power-driven circular power hand saw which has a unitary housing adapted to be mounted on the power unit of the stripped-down power-driven hand saw. The housing has bosses or raised portions which separate the housing into three vertical channels the sides of which are intact down to the open bottom ends thereof. The bosses are for mounting a chain support bar and a guard member and the channels are first, for the ascending chain, the second is for the descending chain, and the third, for venting sawdust. A deflector deflects sawdust into the vent channel. A sprocket floats on a splined shaft to accommodate different support bars, and special oiling ducts and special support bar adjustments are disclosed.

Abstract: A relatively small and light weight personal watercraft includes a driveshaft tunnel which permits the driveshaft housing of a string trimmer apparatus to be installed therein. The string trimmer apparatus is modified by removing the string trimmer or other head which may be attached, installing a propeller(s) or impeller(s), removing any handles from the string trimmer, temporarily removing the power head so that driveshaft housing may be installed within the driveshaft tunnel of the watercraft, installing a fairing (if desired) and/or handlebars, and reattaching the throttle control to the handlebars. The modified string timmer may be used as both a power system for the watercraft and also provides directional control by turning the attached handlebars or fairing in order to rotate the power system about an axis concentric with the driveshaft and thereby change the direction of the thrust line of the propeller(s) or impeller(s).

Abstract: Protection scissors comprising blades with sharpened outer edges and handles functioning as brass knuckles.

Abstract: An adapter for quickly and easily converting a portable, 71/4 inch wormdrive circular saw into a beam cutting chain saw, whereby to increase the cutting capacity of the saw from about 21/4 inches to about 12 inches. the adapter carries a standard cutting chain and includes a hinged attached assembly to be removably connected to the existing slide bars of the saw. The attachment assembly comprises a pivotal hinge and a hinge attachment plate. The hinge and/or the adjustment plate may be pivoted relative to one another to vary the effective length of the hinged attachment assembly and thereby facilitate the connection of the adapter to the slide bars of the saw. By adjusting the length of the hinged attachment assembly, the adapter can be selectively sized for use with virtually all commercially available power saws, regardless of the radial distance between the existing motor shaft and the slide bars of the saw.

Abstract: A chain saw attachment for driving a circular blade from a chain saw includes a chain mounted on a chain guide and driven by the chain saw motor. A sprocket is mounted at one end of the chain guide and is rotatable with the chain. A spindle is secured to the sprocket and is rotatble therewith. At least one housing member surrounds the sprocket spindle and has a flange section attached to the chain guide. The circular blade is connected to the sprocket spindle for enabling the circular blade to rotate with the spindle.