Abstract: Apparatus is disclosed for continuously cleaning the housing of an operating rotary lawn mower of grass clippings which have been thrown up by the action of the cutting blade on the grass being mowed.Such apparatus comprises blades or chains radially spaced about the vertical rotatable shaft of the lawn mower, and spaced above the cutting blades and below the bottom of the housing.

Abstract: A mower deck including a shroud having a top, a discharge opening, first and second sides, the discharge opening located adjacent the second side and a peripheral skirt defining an open bottom, a plurality of cutting blades mounted to the shroud, each blade on a corresponding vertical drive shaft so as to cut plants and convey the clippings generated thereby from the first side to the second side and through the discharge opening, the drive shaft located closest to the discharge opening being provided with an impeller blade oriented at an angle to the corresponding cutting blade and adapted to direct the flow of cut plants toward the second side and through the discharge opening. The shroud also includes intake ports and a baffle which facilitates the flow of air and clippings from the first side to the second side.

Abstract: A rotary lawn mower having a trimming attachment for trimming around fence posts and the like is provided. The trimming attachment assembly includes an auxiliary trimming blade mounted in a housing and attached to a swing arm assembly mounted on the primary mower housing. In the forward position, the trimming attachment extends outwardly from, but slightly overlaps, the mowed path of the primary mower. The trimming blade preferably is driven by the primary mower motor. As a fence post or the like adjacent the primary mower is encountered by the trimming attachment assembly, the trimming attachment assembly is pushed rearwardly by the obstruction and swings into the mowed path of the primary mower, during which process the grass near the fence post is cut. As the fence post or other object is passed, an actuator assembly forces the trimming assembly back into its original forward auxiliary cutting position.

Abstract: An attachment for cleaning the underside of rotary lawn mowers which is a horizontal tubular device having a mower connecting member and quick connect receiver extension. The attachment is connected through the side casing of the mower and is releasably attachable to a quick disconnect fitting which can be connected to a conventional garden hose.

Abstract: A rotatable blade assembly suitable for use on a rotary power lawn mower is provided having an elongated bar member adapted to rotate in a substantially horizontal plane within the housing of a rotary lawn mower to which is detachably secured at diametrically opposed ends thereof cutting blade elements having cutting edges formed at oppositely facing edges which can be secured to the bar member without the need for special tools for removing the blade assembly from the shaft of the mower motor.

Abstract: A belt driven rotary mower spindle and sheave assembly having a plurality of bushings, spacers and bearings compressed with the sheave on the spindle between a nut and a support or shoulder portion of the spindle. Rotational movement of the belt driven sheave is thereby frictionally transferred to the spindle. The assembly is carried within a housing on a mower deck, and a rotary cutting device is fixed to the lower end of the spindle.

Abstract: A leaf raking attachment for a conventional lawn mower includes a frame adapted to be releasably mounted to a lawn mower, the frame in turn being adapted to releasably receive a leaf pusher. The frame may be comprised of a welded frame having a pair of spaced apart vertical guide channels, and the leaf pusher may be comprised of a frame covered with iron mesh, and having a pair of vertical guide rods adapted to be received in the guide channels. The side edges of the pusher are curved forwardly in order to enable the attachment to catch and hold a large quantity of leaves.

Abstract: An apparatus is provided for conversion of a gas-powered flexible line trimmer for use as a lawn edger by attachment of an extendable plate and wheel to a cylindrical trimmer boom, said plate and wheel acting as a support for maintaining position and orientation of a trimmer cutting path.

Abstract: A low-profile internal combustion engine is disclosed, featuring a unitary flywheel spark generation and distributor assembly. A hydraulic starter system is disclosed which may be adapted to such internal combustion engine. The engine of the invention is particularly suitable for use in push-type lawnmowers, to provide a low-profile construction enabling mowing of landscape areas such as under low lying tree branches, beneath bushes, etc., which are otherwise inaccessible to high-profile conventional lawnmowers.

Abstract: A rope guide for the recoil starter rope of a power lawn mower, said rope guide being adapted for attachment to an extruded mower handle member having a substantially C-shaped configuration without drilling, cutting or otherwise deforming the handle member. The guide comprises a tubular body portion having an inner configuration in substantial conformity with the outer configuration of the handle member and adapted to receive the handle member therewithin in close fitting, sliding relation. The body portion is attached to the handle member by means of a screw passing through a bore in the body portion, through the opening in the handle member and into a threaded plate within the handle member spanning the opening therein. An arm portion extending outwardly from the body portion includes an aperture therein for receiving and guiding the mower starter rope.

Abstract: A convertible mulching mower (10) including a housing (12) and chute (30). Chute (30) can be selectively blocked with a chute plug (32) to selectively put mower (10) in a mulching mode. Mounted beneath housing (12) is a plurality of kickers (72) which serve to deflect the grass clippings generally downwardly and inwardly to cause them to penetrate the standing grass blades in the cutting path, when the mower (10) is in its mulching mode (when chute plug (32) is blocking discharge chute (30)). When chute plug (32) is removed, it can be replaced by various grass handling means, including a grass bag (36) or a side discharge chute extension (140).

Abstract: A power lawnmower having a body, a motor mounted to the body with a vertical drive shaft, a cover over the motor defining a power source chamber and a cutter blade below the body. Located on the drive shaft below the motor is a fan enclosed within a cylinder having openings therethrough. An opening in the cover admits air in to the motor chamber through an air filter. Two rows of ribs extending downwardly from the cover provide a filter cavity for receipt of the air filter in this opening. A second filter is positioned atop the motor and compressed between the motor and the cover. This air filter is retained by positioning ribs extending downwardly from the cover to the motor. An attachment mechanism mounting the blade to the drive shaft incorporates an attachment plate to which the blade is attached, a socket receiving the end of the drive shaft and two collars. A first collar is located within the socket and abuts against the end of the drive shaft.

Abstract: An automatic guidance system for a lawn mower comprises four tension cables (10 to 13) each anchorged at a point (15) adjacent one of the corners of a quadrilateral area and each wound round a winch drum (16 to 19) on the mower, a motor (60) on the mower is arranged to drive the four winch drums selectively in pairs, one drum winding-in while the other winds out, by means of a common gear ring 63 which is shifted into one of four different driving positions determined by a guide plate 68 in a square opening (70). The plate is shifted automatically from one position to the next when the mower approaches any one of the automatically adjustable cleats (20) on the individual cables. The mower thus follows a rectangular path of diminishing size.

Abstract: .A mechanism and a method for converting a fixed wheeled walk-behind mower into a caster wheel walk-behind mower and vice versa comprising two caster wheel assemblies having wheels mounted in brackets journalled for rotation in frames. Each frame has means for attaching the mechanism to the front wheel axle. Each caster wheel assembly comprises an elongated member connected to each frame and extending the length of the mower on e.ach side between the frame and the respective rear wheel axle or mower housing. At the end of the elongated member most remote from its connection to each of the frames, a U-shaped notch is formed therein for connection with the housing. A tie rod is provided for interconnecting the two frames, for adding rigidity to the assembly and for maintaining the correct, constant distance between the frames.

Abstract: A wheel mounted string trimmer having a wheel support with a pair of wheels mounted on opposite sides thereof and handle bars extending rearwardly from the support. An elongated tube housing a drive shaft, is adjustably fastened to the wheel support to extend forwardly to a string trimmer head which is coupled to the drive shaft by a gear transmission whose housing is rotatably mounted on the front end of the tube. The trimmer head has a shield fixed to the transmission housing to be adjustable therewith about the tube housing. A yoke bracket is fixed to the shield while being mounted about the tube housing to be adjustable about the axis of the latter to orient the shield and head in the desired position for trimming. A gasoline engine, mounted to the rear of the tube housing, drives the head through the drive shaft and transmission.

Abstract: A battery mounting is provided for a walk-behind lawn mower. An enclosable compartment houses a battery bracket to suspend the battery within the compartment and protect it from sunlight and moisture. The bracket is composed of resilient rod-like material to clampingly hold the battery in place and avoid friction wear on the battery case.

Abstract: A cutter bar with indexable blades for a rotary lawn mower which can be substituted for a conventional cutter bar in the rotary lawn mower and is replaceable and easily indexable without detaching the replaceable blade from the cutter bar or upending the mower. The cutter bar has a recess with abutment shoulders on opposite ends thereof for receiving the indexable blades, each such indexable blade comprising a plate with a plurality of sides sharpened into cutting edges and a socket with a hole for receiving the head of a bolt. Each recess in the cutter bar has a socket into which the socket of the indexable blade is fitted and a hole for receiving the shank of the bolt. The indexable blades are held in the recesses with a nut threaded on the bolt which is preferably a carriage bolt with means for retaining the nut on the shank when the nut is loosened.

Abstract: A "short turn" powered vehicle having a transverse structural mower housing or implement that is used to also vertically stablize the unit. One embodiment uses a self powered mower housing with lateral support wheels which also give lateral support, as do the choice of implements, by means of a vertically restricting hinge in relation to a powered drive wheel; thus the drive wheel is in a floating mode as it gives thurst to the housing or implement, so as to always have traction on uneven ground.On each of the embodiments steering is done by, either a generally centrally located steered front support wheel steered from a rearward operator's seat on the vehicle, or steering being from an operator's seat rearward on the vehicle, by breaking of either of the housing's or implement's lateral support wheels and there being at least one castor type front support wheel or lateral front support wheels located close to the rear support wheels.

Abstract: A power handheld cultivating device has a protective tube for a motor drive shaft and a working implement mountable at the end of the protective tube. A miter-like gear is connectible to the end of the drive shaft and has an output shaft carrying a gear wheel which cooperates with a toothed gear rigid with a drive shaft for the working implement. The implement is mounted on a carrier which is laterally surrounded by an impact body and passages open to the outside may be provided between the impact body and the carrier.

Abstract: A deck for a rotary lawn mower is disclosed which is designed to be fabricated from a polymeric composition by a blow mold process thereby forming double walls. The cavity between the double walls is filled with a suitable foam for added rigidity and sound absorption. The deck includes a support for an engine which defines an opening in the deck for the output shaft of the engine to extend through to the bottom of the mower, a tunnel for directing the grass clippings having a discharge opening for the clippings, and mounting platforms for the mower wheels and handle are integrally formed therewith in a single forming operation.

Abstract: A power trimmer including a handle, a housing, a gas operated engine, a plurality of wheels, and a cutting blade. The housing includes a front wheel mounting member, a rear wheel mounting member, and a cutting blade mounting member. The cutting blade mounting member is offset from the front and rear wheel mounting members. A passageway extends along the upper surface of the cutting blade mounting member. The first end of the passageway is positioned adjacent the exhaust port of the gas operated engine. The second end abuts the rear wheel mounting member. The passageway directs the exhaust fumes from the gas operated engine underneath the housing thereby significantly reducing the noise of the invention. Further, harmful exhaust fumes are directed away from the operator. The cutting blade mounting member includes fixed and removable sections. The removable section can be secured to either side of the fixed section. Thus, an operator can trim from both sides of the power trimmer.

Abstract: A mulching attachment is provided which is adapted to be detachably secured in place within the cavity defined by the deck of a lawn mower in spaced relation to the mower discharge chute opening, so as to permit air flow thereby and to enable virtually unhampered bagging of the leaves picked up by the mower. The mulching attachment comprises a mulching plate which is disposed above the plane of the path of travel of the mower cutting blade, with a portion of the lower edge of the mulching plate being disposed closely adjacent to the upper surface of the cutting blade during rotation of the cutting blade so as to provide a shearing or scissoring cutting action in the area of the lower edge portion. The radial outermost portion of the lower edge of the mulching plate is shaped so as to permit air flow thereby. In one embodiment, a pair of plates are used to form the mulching plate so as to enable the size of the mulching attachment to be adjusted to accommodate mowers of different types and sizes.

Abstract: A lawn mower having a housing with a top, a bottom and a cutting chamber which is open to the bottom. A plurality of wheels are rotatably mounted to the housing and support the housing upon a ground surface while a push bar extends upwardly and outwardly from the housing to enable the housing to be maneuvered by a person utilizing the lawn mower. An electric motor has an output shaft and a long cutting element is secured to the output shaft. The electric motor is detachably secured to the housing so that, upon attachment, the cutting element is positioned within the cutting chamber of the lawn mower. An electric rechargeable battery is also attached to the motor.

Abstract: A ground-working vehicle including a chassis, at least three ground-contacting wheels coupled with the chassis for supporting and moving the vehicle on the ground and an implement coupled with the chassis for working on the ground, at least beneath one side of the chassis, while the vehicle is in motion. A first one of the wheels is positioned opposite the one side of the chassis and mounted for rotation about only a single axis extending generally towards the one side of the chassis. Each of the at least two other wheels are mounted for rotation about two axes including a vertical pivot axis. The pivot axes are asymmetrically spaced from the first wheel to enhance the operability and maneuverability of the vehicle in various configurations.

Abstract: A wheeled attachment for a grass trimmer includes a mounting bar having a wheel at each end, detachably mountable to the grass trimmer to provide easy control and easy support for the grass trimmer. The detachable bar may be securable by a nut and bolt combination either to a housing or protective cover mounted on the grass cutting head immediately above the grass cutting element, or to an adjustable bar component which is detachably securable to the elongated shaft of the grass trimmer. For easy mounting upon the housing of a grass trimmer, the detachable bar includes adjustment slots for the nut and bolt fasteners so that the fasteners may be easily and quickly adjusted to the size of the housing component. For easy mounting upon the elongated shaft of the grass trimmer, the adjustable bar component includes two or more vertically extending bar members which are adjustably attachable to permit forward or rearward adjustment of the wheeled attachment.

Abstract: A grass trimmer includes a structural support frame, a single ground engaging wheel connected to the frame, a rotary trimmer positioned to rotate around the wheel, a motor mechanism to drive the trimmer mechanism and a user handle attached to the frame. The single wheel and location of the wheel relative to the trimmer mechanism allows the operator to very accurately guide the apparatus and to adjust the cutting height of the trimmer quickly and easily to the terrain by tilting of the apparatus about the wheel to one side or the other or from front to back by rotation about the axis of the wheel.

Abstract: An apparatus that can be readily converted from a lawnmower to a trimmer including a housing, an engine mounted thereon, a plurality of wheels rotatably mounted to the housing, a handle secured to the housing and a control linkage system. The housing includes a main body portion and an adjustable segment. The adjustable segment is pivotally connected to the main body of the housing. The adjustable segment is further spring biased in a first position wherein the apparatus is in the traditional lawnmower mode. The control linkage system is operably associated with the adjustable segment so that upon depression of a control lever the adjustable segment pivots upwardly and exposes a portion of the blade. The exposed portion of the blade extends several inches outwardly from the outermost portion of the apparatus. Therefore, the apparatus is able to effectively trim grass from around obstacles such as trees, fences, and posts.

Abstract: A cutter-trimmer comprising a drivingly rotatable cutter disposed at the front end of the body thereof, a guide handle disposed at the rear end of the body, a wheel member disposed in the vicinity of the cutter and reversibly rotatable about a horizontal axis for supporting the body thereon, and a cutter driving engine and a wheel member driving electric motor provided at a longitudinally intermediate portion of the body toward its front end. The device is adapted to perform a cutting operation while traveling forward, rearward or sideways by shifting the wheel member to a forward position or to a lateral position about a vertical axis and holding the wheel member in the shifted position.

Abstract: This invention provides an apparatus to support a trimmer used in cutting weeds or grass in a generally horizontal mode and having an elongate tubular member providing a handle. The support apparatus includes a mounting assembly having opposed ends, one of said ends being connected to the tubular member in height-adjustable and angularly-adjustable relation and the other of said ends being connected to a pair of ground wheels having an axis of rotation transverse to the axis of the cutting plane of the trimmer.

Abstract: A mobile lawn mower is designed multi-part in that the four-wheel carriage housing is provided with a center opening for lockable accommodation of a self-acting so-called grass trimmer, such design permitting operation of the lawn mower as such or the use of the grass trimmer by itself.

Abstract: A power lawn mower has a cutter blade mounted on a vertical output shaft driven by an engine and extending substantially horizontally, and a housing covering the cutter blade. The power lawn mower has a throw-out plate for throwing out the grass cut by the cutter blade, the throw-out plate being mounted on the output shaft above the cutter blade within the housing and extending substantially horizontally. The throw-out plate is angularly spaced from the cutter blade and positioned therebehind in the direction of rotation of the throw-out plate. The throw-out plate is shorter than the cutter blade and substantially flat. The throw-out plate includes a throw-out arm having a leading edge in the direction of rotation thereof and curved progresively rearwardly in the same direction from a proximal end of the throw-out arm to a radially outward end thereof.

Abstract: An attachment for temporarily converting a flexible cord-type lawn trimmer to a lawn edger is disclosed. The attachment comprises a base plate for mounting to the housing of the lawn trimmer. The attachment includes an edge guide, a deflection shield, a bracket and wheels mounted to the base plate. The bracket supports a portion of the lawn trimmer housing upon securing the base plate to the lawn trimmer.

Abstract: A blade coupling assembly includes a spindle having a base plate and a collar which fits about the drive shaft of an engine. A pair of locking pins are removably received within pockets formed on opposite sides of a central bolt opening in the base plate. A lawn mower cutting blade is provided with three corresponding openings which are aligned with the central bolt opening and the locking pins, respectively. The cutting blade is secured between the bolt head and base plate, and a spacer ring is compressed between the base plate and the end of the drive shaft. The locking pins have reduced diameter portions which are received within the blade openings, and annular shoulder portions which engage the cutting blade. When locking pins are removed from the base plate pockets, the base plate is converted for attachment to a replacement blade having upturned side flanges instead of locking pin holes. In the converted arrangement, the upturned side flanges lock the cutting blade against the sides of the base plate.

Abstract: A conventional hand-held weed trimmer of the type including a motor with a flexible cutting line fixed to the output of the motor is provided with a carriage for converting the trimmer into a wheel-mounted lawn mower. The lawn mower consists of a wheel-mounted, planar deck having an open interior portion for receiving the housing of the weed trimmer, and means for supporting the lower skirt portion and protective shield of the motor housing below the plane of the deck. The supporting means comprises means for clamping the rear portion of the skirt to the deck, and a toe-piece for supporting the front portion of the skirt. The deck, or at least the bottom flange of the toe-piece, is flexible enough to allow the forward portion of the trimmer to be tilted downwardly when a downward force is exerted on the trimmer housing. In a first embodiment of the invention, the deck of the carriage is essentially circular, with a key-shaped aperture formed therein.

Abstract: A crankshaft impact protector for protecting the crankshaft of a lawnmower engine from bending beyond its elastic limit whenever a hard or immovable object like a rock or a stump is struck by the lawnmower blade. The protector has a flange for mounting on a mower deck, a mounting base for mounting the lawnmower engine thereupon and a bumper for providing physical support to the crankshaft. Impact forces experienced by the crankshaft are dissipated by the bumper of the protector and shifting of the bumper with respect to the crankshaft is prevented because the engine is integral with the crankshaft impact protector. A small clearance is provided between the bumper and the crankshaft thereby also helping to prevent soil and dust from traveling therethrough and reaching the main bearing of the engine.

Abstract: A quick attachable and detachable mower blade assembly comprising a blade member and blade holder member having flat adjoining surfaces and fixed to the lower end of a vertical drive shaft. A pair of studs are fixed to and project from one of the members through stud openings in the other of the members. The latter openings have an enlarged portion for passing the head of the studs and a narrow portion extending from the enlarged portion to an end conforming to the shape and dimension of the shank of the respective stud. The narrow portions of the openings are located and directed so that the studs, when seated in the respective ends, prevent axial and angular movement between the blade member and the blade holder member. The blade holder member and blade member have, in addition, a central opening which receives a downwardly biased pin extending from the lower end of the drive shaft.

Abstract: A cutter housing for use in a power-driven lawn mower has a substantially cylindrical skirt wall and a top wall covering the upper end of the skirt wall. The top wall has a substantially central recess for accomodating the engine of the lawn mower and includes a pair of half members positioned one on each side of the recess and lying substantially flush with each other in symmetrical and contiguous relation. The cutter housing also has a rear housing portion extending rearwardly in contiguous relation to the skirt wall and the top wall, and a partition disposed in the rear housing portion and dividing the rear housing portion into two spaces. The skirt wall, the top wall, the rear housing portion, and the partition are integrally molded of synthetic resin.

Abstract: An improved cutting blade structure and method of use is disclosed, characterized by use of a flexible, planar member formed of a plurality of interconnected elongate tubular segments which when rotated, contacts and effectively cuts vegetation. Due to its planar tubular segment construction, the cutting blade constantly exposes a multiplicity of new cutting edge surfaces during use and possesses an extremely low mass which reduces the possibility of personal injury to a user or property damage to structures located in the vicinity of use.

Abstract: A lawn mower having a housing and a cutter unit positioned below the housing. The cutter unit comprises an upper rotating cutting unit and a lower stationary cutting unit that is concentric with the upper cutting unit and which have a plurality of upper and lower blades at their borders. Each blade has a cutting surface with a near end close to the border, and a far end away from the border. The blades of the upper cutting unit extend in front of a line passing through the concentric axis and the near end, in the direction of rotation of the upper cutting unit.The upper blades rotate and slide over stationary lower blades, thereby cutting the lawn in a manner similar to a pair of scissors. The angle between the upper and lower blades is preferably 16-20 degrees.

Abstract: A carriage finding particular utility for support of a lawn trimmer is comprised of two frame members connected by a yoke. The yoke is made of two pieces which may pivot with respect to each other to allow insertion or removal of the handle of the trimmer. When it is desired to store the apparatus, the yoke may be broken into two pieces to reduce the area required for storage. The yoke is pivotally mounted to the frame members to permit angular adjustment about a horizontal axis, and various mounting holes are provided in the frame members to permit further adjustment of the yoke.

Abstract: A forwardly opening cylindrical housing is mounted on the forward end of a wheeled frame coupled to the front of self-propelled prime mover and the rear of the housing includes a forwardly facing axial inlet and radial discharge rotor assembly mounted therein. The housing includes a tangential outlet for the rear end thereof aligned with the rotor assembly and the outlet has the inlet end of conduit means connected thereto for conveying large volumes of air having forage entrained therein to a remote bin into which the discharge end of the conduit opens. The forward end of the housing includes generally diametric stationary bar structure and a forward extension of the rotor shaft includes radial cutting blades spaced slightly axially from the stationary bar.

Abstract: Improvements are described for power mowers comprising a prime mover, a rotatable drive shaft driven by the prime mover and rotatable grass cutting means adapted to be driven by power from said drife shaft. The improvements involve including in the mowers (a) a centrifugal clutch interposed between the drive shaft and the cutting means, (b) apparatus enabling the prime mover to operate at a rate of speed at least high enough for the clutch to engage, and alternatively at a rate of speed low enough for the clutch to disengage, and apparatus including a pulley and at least one stationary belt frictionally engageable therewith for stopping rotation of the cutting means concurrently with the disengagement of the clutch.

Abstract: A plural-castor-mounted lightweight tubular frame has a central resilient housing-clamping mechanism adapted for holding a string trimmer having a tapered or other conventional-shape housing at a desired level for trimming weeds or grass. Mechanical advantage and threaded adjustment are provided by the clamping mechanism. The handle of the string trimmer is employed as the handle by which the castor mounted frame and the trimmer held in it are directed. Quick detach/quick attach features enable the string trimmer to be used conveniently by itself when desired. Two height-adjustment provisions can be used, a coarse adjustment of clamping-height, and a fine adjustment of threaded connection between threaded shanks of the castor and clamping nuts at the frame that also provides convenient tilt-adjustment of the string trimmer relative to the ground.

Abstract: An attachment for temporarily converting a flexible cord-type lawn trimmer to a lawn edger is disclosed. The attachment comprises a base plate for mounting to the housing of the lawn trimmer. The attachment includes an edge guide, a deflection shield, a bracket and wheels mounted to the base plate. The bracket supports a portion of the lawn trimmer housing upon securing the base plate to the lawn trimmer.

Abstract: An arrangement for mounting a two-stroke cycle vertical crankshaft internal combustion engine on a rotary mower deck to accept a four-stroke cycle vertical crankshaft internal combustion engine whereby either type engine may be adapted to the same mower deck is disclosed including a feature for minimizing the risk of crankshaft or crankcase damage in the event of impact of the rotating mower blade with a relatively immovable object. By employing the adapted which allows mounting of the two-stroke cycle engine on the mower deck to also reinforce the lower region of the engine crankcase where the crankshaft extends from the crankcase a lighter weight, cheaper construction of the two-stroke cycle engine is possible.

Abstract: An electric lawn mower and power cord combination in which the power cord has a central portion that is self-coiling. This central portion of the cord comprises the predominant length of the cord, and is constructed with an elastic memory, so that, when in its relaxed state, it automatically coils itself into a continuous spiralling helix that is too large to pass under the electric lawn mower. A cord grip is also disclosed that locks the cord to a stationary object to prevent the cord from inadvertently becoming disconnected during use.

Abstract: A rotary lawn mower attachment facilitating distribution and collection of leaves including a deflector device mounted in fixed position relative to the deck, the deflector including a flexible barrier surrounding the mower outside the annular wall enclosing the cutter blade and extending continuously from the surface of the ground to an elevation above the deck to define a leaf-collecting space intermediate the deflector and annular wall.

Abstract: A mowing apparatus includes a tractor with a mowing unit attached to the tractor in varying operable positions with respect to the tractor. The mowing unit includes a pair of reversible blades which are rotated in a designated fashion about a pair of perpendicular first and second axes. Each blade has distinct cutting surfaces so that successive rotation of the blades presents a new cutting surface for continued operation and longer blade life. A stop mechanism is designed to prevent excessive rotation of the blades with respect to a mounting hub upon encountering a predetermined force.

Abstract: A combination lawn mower cutting blade and removable thatching devices with he thatching devices being selectively adjustable to vary the depth of thatching relative to the depth of cut of the blade.

Abstract: The invention relates to a lawn mower knife assembly including a rigid bar, plate or disc attached to a motor-driven generally vertical shaft and provided, at a distance from the shaft attachment, with at least two attachment points for knife means, and at least two knife means, each including a blade section provided with a cutting edge and a shank section adapted for the fixation of the knife means to the bar, plate or sheet.