Abstract: A ground-working tool is including a shaft, a drive motor, a gear set, at least one arm and at least one head is disclosed. The drive motor is disposed in mechanical cooperation with the shaft. The gear set is configured to be driven by the drive motor. The arm is disposed in mechanical cooperation with the gear set and defines a longitudinal axis. The head is disposed in mechanical cooperation with the arm. The arm is movable proximally and distally in a reciprocating motion.

Abstract: A walk aerator comprises a frame supported by a plurality of ground engaging wheels, the frame carrying a coring head having a plurality of side-by-side tine assemblies. The wheels define a wheelbase which is substantially equal to or less than the width of a coring swath and the wheels are located in advance of the coring head to keep the wheels from passing over the holes or soil cores left in any preceding coring swathes formed by the aerator. The vertical position of the coring head is adjustable up and down as the ground contour changes to keep hole depth substantially constant. The tine assemblies are reciprocated by a single crankshaft driven by a single pulley, the crankshaft being assembled from multiple crank arms that are splined and bolted together. Sealed bearings connect drive arms that drive the tine assemblies to the crankshaft. The crankshaft can be disassembled to allow the sealed drive arm bearings to be replaced. Integral core deflectors are used on the drive arms.

Abstract: An electric garden tiller is disclosed. The tiller is light weight, compact and easy to use. The tiller includes a two stage speed reduction transmission and an aluminum transmission housing. Connected to the transmission housing are a main housing and electric motor, a fender, a tine shaft and four tine assemblies, a rotatable wheel assembly and a foldable handle. Connected to the handle is a safety switch mechanism requiring two simultaneous actions to activate the motor. Once activated, if an operator's hand is removed, the motor will stop.

Abstract: A powered appliance includes a working member, a handle operably coupled to the working member and a control movable between a first position proximate the handle in which movement of the working member is permitted and a second position distant the handle in which movement of the working member is at least reduced. One of the handle and the control is configured to at least partially receive the other of the handle and the control when in the first position. At least one of the handle and the control includes a flexible member adjacent the other of the handle and the control.

Abstract: A walk-behind electric working machine has a frame, an electric motor mounted on the frame, and a handle support section mounted on the frame, the handle support section having a pair of electrical terminals. A handle post has a first end portion for removable connection to the handle support section, a second end portion, and an electrical terminal disposed on an outer peripheral surface of the first end portion for electrical connection with the electrical terminals of the handle support section when the first end portion of the handle post is connected to the handle support section. A handle is removably mounted on the second end portion of the handle post and has handle portions. Grip members are mounted on the respective handle portions and are configured to be gripped by respective hands of an operator. An operation button controls power to operate the electric motor when the electrical terminal of the handle post is electrically connected to the electrical terminals of the handle support section.

Abstract: A portable handheld edge cutter (1) has a cutterhead (2) fixed to a guide tube (4). Two wheels (6, 7) are attached to the cutterhead (2). The cutterhead (2) includes a gear unit mounted in a gear housing (8). A first wheel (7) is rotatably journalled on a first end (27) of the gear housing (8). On the opposite-lying end (28) of the gear housing (8), a cutting knife (9) is mounted and is rotatably driven by the output shaft (18) of the gear unit. In order to achieve a simple assembly of the edge cutter (1) and to protect the gear housing (8) against wear, the second wheel (6) is mounted between the gear housing (8) and the cutting knife (9) and that the two wheels (6, 7) are journalled coaxially to the output shaft (18).

Abstract: A combination machine for trenching, for forming the edge of a bed, and for laying and burying tubing, cable, piping, and the like. The machine includes steerable caster wheels mounted on the rear of the machine which, together with a single front wheel, allow for a tight turning radius when using the machine. The machine also includes a blade height adjustment which allows for the trenching or edging blade depth to be readily adjusted in a substantially infinite variation. Other aspects of the present invention include an edging machine and a trenching machine, both being of a compact design. Both include an extendable handle which, in a preferred embodiment retracts or folds to allow for the volume of space occupied by the machines to be minimized, preferably, to the extent that either of such machines can typically be carried in a trunk of a standard automobile.

Abstract: A walk aerator comprises a frame supported by a plurality of ground engaging wheels, the frame carrying a coring head having a plurality of side-by-side tine assemblies. The wheels define a wheelbase which is substantially equal to or less than the width of a coring swath and the wheels are located in advance of the coring head to keep the wheels from passing over the holes or soil cores left in any preceding coring swathes formed by the aerator. The vertical position of the coring head is adjustable up and down as the ground contour changes to keep hole depth substantially constant. The tine assemblies are reciprocated by a single crankshaft driven by a single pulley, the crankshaft being assembled from multiple crank arms that are splined and bolted together. Sealed bearings connect drive arms that drive the tine assemblies to the crankshaft. The crankshaft can be disassembled to allow the sealed drive arm bearings to be replaced. Integral core deflectors are used on the drive arms.

Abstract: An implement and method of assembly, wherein the implement comprises a housing having a first-side portion and a second-side portion, at least one element having a weight, the element being attached to the second-side portion of the housing and the weight of the element creating a moment arm, a shaft positioned between the first-side portion and second-side portion of the housing and operably coupled to at least one of the element, and a counterweight attached to the first-side portion of the housing, the counterweight offsetting the moment arm created by the weight of the element.

Abstract: A trimmer comprises a cutting head (1) housing a cutter (5), and a shaft (2) for supporting the cutting head. A large diameter wheel (8) is rotatably mounted with respect to the cutting head (1), and a motor is provided for driving the cutter (5) via an output shaft (7). The cutting head (1) is connected to the shaft (2) by a joint (3) permitting the cutting head (1) to be positioned with its cutter (5) either substantially horizontal or substantially vertical. The wheel (8) is sized to contact the ground when the cutter (5) is substantially vertical and to circumscribed the axis of the output shaft (7). The arrangement is such that the cutter (5) extends beyond the circumference of the wheel (8).

Abstract: An electric tilling machine has a motor mounted on a machine body for rotationally driving a tilling shaft provided with tilling claws. A housing/cleaning box has an upper opening and is configured to receive therein the tilling shaft and tilling claws with the machine body closing the opening of the box. Front and rear locking sections lock the machine body to the housing/cleaning box with the tilling shaft and tilling claws housed in the box. A control section keeps the motor in a controllably operable condition while the machine body is locked in the housing/cleaning box so that the motor can be operated to rotate the tilling shaft and tilling claws within the box in a cleaning mode.

Abstract: A rear-tine roto-tiller with a chassis having a forward end and a rearward end; a set of rotating tines at the rearward end; a set of ground-engaging wheels between the forward end and the tines; and a tine transmission mounted on a substantially vertical shaft at the rearward end with a substantially horizontal shaft holding the tines. The tine transmission is rotatable about the vertical shaft between a first position in which the tines rotate in the same direction as the wheels and a second position in which the tines rotate in a direction opposite the direction of rotation of the wheels, thus allowing easy conversion between SRT mode and CRT mode.

Abstract: A gardening/landscaping utility machine having a counter-rotating twin shaft system that can perform multiple types of work required for gardening/landscaping, including tilling, trench-edging, weeding, brush cutting, snow removal and lawn mowing. These processes can be accomplished by exchanging attachments from, or altering the orientation of, the counter-rotating twin shafts.

Abstract: A walk-behind electric cultivating machine has a body frame, an electric motor mounted on the body frame and having a motor shaft, and batteries mounted on the machine body frame for supplying electric power to the electric motor. Each of the batteries has a longitudinal axis disposed generally perpendicular to a longitudinal centerline of the motor shaft. A cultivating shaft is rotatably mounted to the machine body frame and has cultivating members mounted on the cultivating shaft for rotation therewith. A transmission mechanism is mounted on the body frame and is connected to the motor shaft for transmitting a driving power of the electric motor to the cultivating members via the cultivating shaft.

Abstract: A portable handheld work apparatus, such as a motorized cultivator (1) or the like, includes a frame (2) which extends essentially in the longitudinal direction (21) of the work apparatus. A drive motor (3) is fixed at one end (22) of the frame (2) and a work tool is driven by this drive motor. The opposite-lying end (23) includes at least a handle (7, 8) for guiding the work apparatus during the operation thereof. In order to make possible an ergonomic work posture of the operator, the handle (7, 8) lies facing away upwardly from the ground surface (42) in the work position of the motorized work apparatus. The work position is a position in which the work tool lies on the ground surface (42) to be worked.

Abstract: A walk-behind trenching implement has a side mounted rotary trenching tool for creating a profiled trench into the surface of the earth, which can also be used as an implement to edge landscape beds. The trenching implement is powered by an engine that delivers rotational power in an unbalanced manner to the wheel adjacent to the rotatable trenching tool. The wheel opposite to the trenching tool is can be non-powered to freely rotate as the implement is moved across the surface of the ground, or braked to unbalance power delivery through a differential. This unbalanced propulsion drive induces a skewing action into the operation of the implement that counterbalances the opposite skewing action resulting from the operation of the trenching tool to provide a more smoothly operating implement. A trenching tool having a configuration conducive to profile modification allows flexibility in the desired shape of the trench being formed.

Abstract: A combination machine for trenching, for forming the edge of a bed, and for laying and burying tubing, cable, piping, and the like. The machine includes steerable caster wheels mounted on the rear of the machine which, together with a single front wheel, allow for a tight turning radius when using the machine. The machine also includes a blade height adjustment which allows for the trenching or edging blade depth to be readily adjusted in a substantially infinite variation. Other aspects of the present invention include an edging machine and a trenching machine, both being of a compact design. Both include an extendable handle which, in a preferred embodiment retracts or folds to allow for the volume of space occupied by the machines to be minimized, preferably, to the extent that either of such machines can typically be carried in a trunk of a standard automobile.

Abstract: A walk-behind tiller has a body and a pair of wheels mounted on the body for undergoing rotation to cause the walk-behind tiller to undergo travelling along a ground surface. A tilling device is mounted on the body for undergoing a first movement operation in which the tilling device travels along the ground surface while the tilling device is disposed in spaced-apart relation to the ground surface, a second movement operation in which the tilling device tills the ground, and a third movement operation in which the tilling device is maintained generally horizontal to the ground surface.

Abstract: A walk-behind working machine has a machine body and a wheel mounted on the machine body for undergoing rotation to move the walk-behind working machine along a ground surface. A cultivator device is mounted on the machine body for cultivating the ground. A working device attachment is removably connected to the machine body for working the ground. A connection mechanism removably connects the working device attachment to the machine body. The connection mechanism has a pair of link members each pivotally connected at a first end portion thereof to the working device attachment and a control unit for controlling a position of the working device attachment with respect to the ground surface so that when the working operation, the first end portions of the link members are disposed closer to the ground surface than the second end portions of the link members.

Abstract: During forward rotation of a power-transmitting member, either engagement between left meshing claws of the transmitting member and a left driven member or engagement between right meshing claws of the transmitting member and a right driven member is cancelled, through axial movement of the left or right driven member away from the transmitting member, when a difference between loads acting on the engagement between the left meshing claws and acting on the engagement between the right meshing claws has exceeded a reference value. During reverse rotation of the transmitting member, both the engagement between the left meshing claws and the engagement between the right meshing claws are constantly maintained. When necessary, a claw control mechanism compulsorily keeps the engagement between the left meshing claws and between the right meshing claws.

Abstract: A walk-behind trenching implement has a side mounted rotary trenching tool for creating a profiled trench into the surface of the earth, which can also be used as an implement to edge landscape beds. The trenching implement is powered by an engine that delivers rotational power in an unbalanced manner to the wheel adjacent to the rotatable trenching tool. The wheel opposite to the trenching tool is can be non-powered to freely rotate as the implement is moved across the surface of the ground, or braked to unbalance power delivery through a differential. This unbalanced propulsion drive induces a skewing action into the operation of the implement that counterbalances the opposite skewing action resulting from the operation of the trenching tool to provide a more smoothly operating implement. A trenching tool having a configuration conducive to profile modification allows flexibility in the desired shape of the trench being formed.

Abstract: A walk behind powered apparatus for operating working attachments includes a ground engaging carriage with two endless tracks on opposite sides of the frame. A support frame attached to the carriage includes a pair of rearwardly and upwardly extending side plate members with upper end portions that pivotably support a boom and a controller. The boom is arcuately-shaped and has a working attachment at a forward end. The controller includes linkages which are connected to two drive units which enable independent operation of each endless track. The apparatus also includes at least one selectively positionable counterweight that may be moved relative to the vertical traverse plane passing through the center of gravity of the apparatus to increase the operational parameters of the apparatus.

Abstract: A rotary head for dethatching machine includes a plurality of channels which are evenly distributed along the outer periphery of the rotary head for receiving flexible dethatching filaments. The dethatching filaments are elongated with a plurality of barb-like protrusions on one end thereof for engagement in the channels of the housings. Once a filament is inserted into a channel, it cannot be pulled out due to the protrusions engaging the interior and exterior walls of the channel of the rotary head. A plurality of rotary heads are mounted on a shaft of a machine. During rotation of the shaft and the rotary heads, the flexible filaments contact the accumulated dethatch with sufficient force to dislodge thatch for later retrieval and clean up.

Abstract: A walk-behind cultivator has a body, at least one pair of first tine assemblies mounted on the body to undergo rotation about a rotational axis in a first direction of rotation, and at least one pair of second tine assemblies mounted to undergo rotation about the rotational axis in a second direction of rotation different from the first direction of rotation. Each of the first tine assemblies has first tines connected together along end portions thereof. Each of the second tine assemblies has second tines connected together along end portions thereof. The second tine assemblies are arranged in the same phase with respect to each other around the rotational axis.

Abstract: The lawn and garden implement caddy is useful for storing and transporting various implements, including long handled tools, hand tools and containers, useful in lawn and garden care. The caddy has a wheeled base with a front area having a container platform and a rear area that supports the head portion of the long handled tools. A center support interconnects the base with the top support and provides a plurality of shaped members that form a lower container enclosure and support the top support frame. The center support also includes a mechanism for supporting a lower container on or above the container platform. The top support frame forms a container enclosure in the front and a series of openings in the back configured to receive the handle end of the long handled tools. With the caddy, a lawn care worker can efficiently and effectively care for a lawn or garden.

Abstract: Walk-behind electric cultivating machine includes an electric motor provided and a plurality of batteries provided on an upper portion of a machine body frame, and a transmission mechanism and cultivating shaft mounted to a lower portion of the machine body frame. The cultivating shaft has a plurality of cultivating claws. The electric motor has a motor shaft extending downward, the transmission mechanism is positioned immediately below the motor shaft, and the plurality of batteries are positioned around and adjacent to the electric motor. The plurality of batteries and motor are positioned adjacent to the center of gravity of the machine practically immediately above the cultivating claws.

Abstract: Walk-behind electric working machine includes an operating handle section extending rearwardly from a rear portion of a machine body frame. The operating handle section includes a handle post removably attached to a handle support provided on a rear portion of the machine body frame, and a handle attached to the handle post and having left and right grip portions. The right grip portion includes a work preparing lever, and the left grip portion includes a work starting operation button. Electric motor for driving cultivating claws is activated in response to operation of both the work preparing lever and the work starting operation button.

Abstract: A walk-behind working machine includes a motive power source, right and left transmission shafts, and a clutch for transmitting motive power from the source to the shafts. The transmission shafts are disposed in alignment with their respective ends butting against each other. The clutch includes a driving cylindrical member rotationally mounted around the transmission shafts. The transmission shafts have first grooves formed on their outer peripheral surfaces while the cylindrical member has second grooves formed on an inner peripheral surface thereof. The clutch further includes balls disposed between a space defined by the first and second grooves. The first groove is of substantially V-shaped configuration. The first groove has a leading end positioned between the ends of the transmission shafts.

Abstract: An implement having an engine and a transaxle which may be rigidly and directly attached to one another in a vertically stacked orientation to form an engine and transaxle module. The implement also includes ground engaging wheels attached to the transaxle axles, a handle allowing control of the implement, and one of a plurality of interchangeable working devices attached to the engine and transaxle module. For example, the implement may be a snow thrower having an auger assembly which is operatively coupled to one of the engine and the transaxle. The transaxle may include a pair of axially aligned axles which are selectively coupled together, such that when the axles are coupled together, the wheels are rotatably fixed together, and when the axles are not coupled together, the wheels are free to rotate relative to each other.

Abstract: Connection mechanism includes upper and lower links pivotably connected at one end to a machine body and connected at the other end to a working device, and a control unit for controlling a lower limit position of the device. When the device is in a soil-contacting position prior to initiation of desired work, an end portion of the links adjacent the device is located higher than another end portion adjacent the body. The mechanism further includes a base member connected to the body, an arm vertically pivotably connected to the base member, and a connection member connected to the other end of the links for connecting the device. The device is vertically movable by the arm being vertically pivoted with an engaging member guided along an edge of a window formed in the base member.

Abstract: A tiller includes an engine, a transmission mechanism, and a rotor shaft having tillage tines mounted thereon. The transmission mechanism transmits a motive power of the engine to the rotor shaft to thereby cause the tillage tines to perform a tilling operation. The tiller also includes a tranmission case having the transmission mechanism housed therein, and a fender disposed to cover the tillage tines. The fender is mounted to the tranmission case by bolts. Each bolt has a portion projecting downwardly from the fender. The tiller further includes a guard member extending downwardly from the transmission case to a level lower than the downwardly projecting portion of each bolt. The guard member guards the bolts against a foreign object thrown upwardly by the tillage tines during the tilling operation.

Abstract: A walk-behind tiller having a loop-shaped handle is provided. An operating portion of a rear portion of the handle includes left and right horizontal grips, left and right rising portions and a cross portion interposed between the rear ends of the rising portions. For holding the tiller substantially horizontally, the left and right horizontal portions are held. For tilling operations, the left and right rising portions are held. For pushing down the handle, the cross portion is held.

Abstract: A portable handheld work apparatus, such as a motorized cultivator (1) or the like, includes a frame (2) which extends essentially in the longitudinal direction (21) of the work apparatus. A drive motor (3) is fixed at one end (22) of the frame (2) and a work tool is driven by this drive motor. The opposite-lying end (23) includes at least a handle (7, 8) for guiding the work apparatus during the operation thereof. In order to make possible an ergonomic work posture of the operator, the handle (7, 8) lies facing away upwardly from the ground surface (42) in the work position of the motorized work apparatus. The work position is a position in which the work tool lies on the ground surface (42) to be worked.

Abstract: Front-rotary working machine employs a vertical engine having an output shaft projecting downward, and a transmission case, provided beneath the vertical engine, has a flat underside so as to extend generally parallel to the ground surface to be cultivated. Distance between left and right transporting wheels, connected to a driving shaft at a rear end portion of the transmission case, can be reduced as necessary. With these arrangements, it is possible to reduce the overall width of the front-rotary working machine.

Abstract: An aerator that allows the operator to make a turn with the machine while the tines are still in contact with the turf through the use of a differential shaft and brakes that enhance the maneuverability of the machine. The aerator is fitted with a mechanical gear type differential on an intermediate drive shaft that provides for automatic, separate and variable rotational motion of the individual halves of the tine shaft. This differential apparatus also provides constant and equal torque application to both sides of the tine wheel assembly simultaneously while the machine is operating. This insures that tine penetration into the turf is equal on both sides at all times. The tine shaft halves are designed and mounted in such manner as to allow each half (left and right sides) to be driven by separate chains from the differential shaft. This design results in a desired variation in the speed of rotation of the two halves that facilitates turning the unit.

Abstract: Driving worm provided on a transmission shaft, driven worm wheel provided on a cultivating shaft, main shaft portion of the transmission shaft and clutch are collectively accommodated in a transmission casing, which includes first and second bearings for preventing the clutch and driving gear from being displaced toward each other. The main shaft portion is screw-coupled to the clutch and a direction in which the screw-coupling between the main shaft portion and the clutch is tightened corresponds to only one rotational direction of an engine. The casing has a single opening for inserting therein the worm and worm wheel, and the opening is closed with a lid that also functions to prevent the worm from coming off the casing.

Abstract: A turf aerator consisting of a cast concrete roller having an axis of rotation, and having an annular surface displaced radially away from the axis of rotation; first and second radial arrays of tubular tines, each tine among the radial arrays having inner and outer ends, and having soil input and soil output ports; and mounting lug and tine receiving channel combinations attaching the radial arrays of tubular tines to opposite ends of the concrete roller so that the outer ends of such tines extend outwardly from the annular surface of the roller, and so that the inner ends of the tines extend inwardly from the annular surface.

Abstract: A walk-behind working machine includes a motive power source, right and left transmission shafts, and a clutch for transmitting motive power from the source to the shafts. The transmission shafts are disposed in alignment with their respective ends butting against each other. The clutch includes a driving cylindrical member rotationally mounted around the transmission shafts. The transmission shafts have first grooves formed on their outer peripheral surfaces while the cylindrical member has second grooves formed on an inner peripheral surface thereof. The clutch further includes balls disposed between a space defined by the first and second grooves. The first groove is of substantially V-shaped configuration. The first groove has a leading end positioned between the ends of the transmission shafts.

Abstract: A hand control mechanism to produce a selectively changeable effect on a continuously variable input shaft is disclosed. The mechanism selectively varies the length of a lever arm to effect a change in the amount of rotation of a continuously variable input shaft of a machine.

Abstract: A support bracket includes a cylindrical portion sized to have a skid inserted therethrough, and a receiving portion sized to receive a handlebar. The cylindrical portion and the receiving portion are formed by bending a single plate in two. The plate includes a groove portion formed centrally thereof, right and left flat plate portions positioned rightwardly and leftwardly of said groove portion, right and left curved portions protruding outwardly from the right and left flat plate portions, respectively, and right and left connection portions protruding outwardly from the right and left curved portions, respectively. The right and left flat plate portions include right and left projecting portions, respectively. The right and left flat plate portions are reinforced by the right and left projecting portions. When the plate is bent in two, the flat plate portions are joined together to form the groove portion into the cylindrical portion.

Abstract: A combination machine for trenching, for forming the edge of a bed, and for laying and burying tubing, cable, piping, and the like. The machine includes steerable caster wheels mounted on the rear of the machine which, together with a single front wheel, allow for a tight turning radius when using the machine. The machine also includes a blade height adjustment which allows for the trenching or edging blade depth to be readily adjusted in a substantially infinite variation. Other aspects of the present invention include an edging machine and a trenching machine, both being of a compact design. Both include an extendable handle which, in a preferred embodiment retracts or folds to allow for the volume of space occupied by the machines to be minimized, preferably, to the extent that either of such machines can typically be carried in a trunk of a standard automobile.

Abstract: A tiller (10) having an engine (24), a plurality of rotating times (20), and a handle (26) which are rotatable with respect to a main frame (12) of the tiller (10) and cooperate with pivoting wheels (14) to facilitate turning of the tiller (10) while maintaining balance and stability.

Abstract: An implement having an engine and a transaxle which may be rigidly and directly attached to one another in a vertically stacked orientation to form an engine and transaxle module. The implement also includes ground engaging wheels attached to the transaxle axles, a handle allowing control of the implement, and one of a plurality of interchangeable working devices attached to the engine and transaxle module. For example, the implement may be a snow thrower having an auger assembly which is operatively coupled to one of the engine and the transaxle. The transaxle may include a pair of axially aligned axles which are selectively coupled together, such that when the axles are coupled together, the wheels are rotatably fixed together, and when the axles are not coupled together, the wheels are free to rotate relative to each other.

Abstract: An electric garden tiller is disclosed. The tiller is light weight, compact and easy to use. The tiller includes a two stage speed reduction transmission and an aluminum transmission housing. Connected to the transmission housing are a main housing and electric motor, a fender, a tine shaft and four tine assemblies, a rotatable wheel assembly and a foldable handle. Connected to the handle is a safety switch mechanism requiring two simultaneous actions to activate the motor. Once activated, if an operator's hand is removed, the motor will stop.

Abstract: A tiller includes an engine, a transmission mechanism, and a rotor shaft having tillage tines mounted thereon. The transmission mechanism transmits a motive power of the engine to the rotor shaft to thereby cause the tillage tines to perform tilling operation. The tiller also includes a transmission case having the transmission mechanism housed therein, and a fender disposed to cover the tillage tines. The fender is mounted to the transmission case by means of bolts. Each bolt has a portion projecting downwardly from the fender. The tiller further includes a guard member extending downwardly from the transmission case to a level lower than the portion of each bolt. The guard member guards the bolts against a foreign object thrown upwardly by the tillage tines under the tilling operation.

Abstract: Front-rotary working machine employs a vertical engine having an output shaft projecting downward, and a transmission case, provided beneath the vertical engine, has a flat underside so as to extend generally parallel to the ground surface to be cultivated. Distance between left and right transporting wheels, connected to a driving shaft at a rear end portion of the transmission case, can be reduced as necessary. With these arrangements, it is possible to reduce the overall width of the front-rotary working machine.

Abstract: A front-rotary cultivator having a plurality of tillage tines provided at the front of a body and left and right driving wheels. The tillage tines include a plurality of forward-rotating tines arranged in the center of the body width and a plurality of reverse-rotating tines arranged transversely outward of the forward-rotating tines. The reverse-rotating tines are arranged in the same phase in a side view to simultaneously dig into the ground.

Abstract: A tiller (10) having an engine (24), a plurality of rotating times (20), and a handle (26) which are rotatable with respect to a main frame (12) of the tiller (10) and cooperate with pivoting wheels (14) to facilitate turning of the tiller (10) while maintaining balance and stability.

Abstract: A tiller has rotational blades for tilling the ground. A power source generates a rotational driving force for rotating the rotational blades and for advancing the tiller unidirectionally while tilling the ground. A power transmission mechanism transmits the rotational driving force of the power source to the rotational blades. A handle for guiding the tiller is pivotally connected to a rear portion of the power source or to a rear portion of the power transmission mechanism so that shock energy generated during tilling of the ground and transmitted to the power source or the power transmission mechanism is absorbed by pivotal movement of the power source or the power transmission mechanism relative to the handle about a pivot point spaced rearwardly from a center of gravity of the tiller and disposed approximately at the same height as the center of gravity of the tiller from a surface of the ground.

Abstract: A sod cutter (10) is disclosed including a frame (12) formed by welding the free edges of mount, frame and end plates (46a, 46b 46c) bent relative to one of two side plates (46) to the corresponding edges of the other side plate (48). An axle assembly (160) is pivotal relative to the frame (12) by a depth adjustment lever (198) between a working position where wheels (16) carried by the axle assembly (160) engage tubular members (168) slideably and nonrotatably received on a drive shaft (166) and a transport position where the wheels (16) are spaced from the tubular members (168). A U-shaped handlebar (210) is positionable between an operating position for grasping during operation and a storage position for lifting and handling. A U-shaped control (212) is pivotably mounted in front of and above the U-shaped handlebar (210) for actuating the throttle of the engine (18).