Abstract: A length-adjustable upper steering arm for a three-point coupling device, including a connecting eye having a threaded shank, and a coupling hook having a threaded shank, both of which are received in threaded bores of a sleeve, and which threads extend in opposite directions. To achieve a locked position or disengaged position of the coupling hook relative to the sleeve, there are provided an actuating lever and a locking ratchet which is partially pivotable independently thereof. Because the spring-loaded locking ratchet may be pivoted from the disengaged position into the engaged position independently of the actuating lever, the thread is not subject to jamming forces.

Abstract: An invention which is an attachment to a standard tractor for use in continuous clearing, uprooting and grubbing of small trees, stumps, roots and brush from the land. The unit is fabricated of structural steel elements specially designed for continuous cutting and release of targeted materials for removal. These elements, specially designed and new to the art include a safety shield with viewing windows which provides protection to the operator from flying, hazardous debris; a steel bar as a guide to the forward cutting blades which also aids in pushing over the targeted timber; a pair of curved blades for gripping and cutting, then releasing the material they cut and lift without clogging the blades. Also the blades do not stick in the wood. This is a unique property as it allows continual operation including clearing the blades of debris saving the operator time and labor dismounting and manually clearing the blades after each cutting operation.

Abstract: A coupling hook (5) comprises a housing (7, 8) defining a recess (10) in which a bearing ball (12) of an implement pin (41) is received. The hook also comprises a springt-loaded locking catch (14). The catch (14) is pivotal about a bearing pin (19) with play in the direction of a first line (18) connecting the center (13) of the recess (10) to a contact point (15) between the locking catch (14) and a ball (12) in the recess (10). The coupling hook (5) also comprises a locking stop (23) engaging the locking catch (14) in an undercut recess (25) thereof to define the locking position. The size of the undercut is less than or equal to the size of the play of the catch (14) on the bearing pin (19).

Abstract: A lifting strut having an adjusting sleeve with an externally threaded portion and an internally threaded portion. A connecting end with a threaded journal is screwed into the internally threaded portion, with a connecting end with a threaded sleeve being screwed on to the externally threaded portion. In addition, there is provided a movable holding sleeve having grooves and stops. The holding sleeve may be moved into any position relative to a rotary cross member of the adjusting sleeve provided with teeth for the purpose of changing the length of the lifting strut. Furthermore, the holding sleeve, with its grooves, may be moved across the teeth of the rotary cross member and across the teeth provided at the threaded sleeve in a corresponding position in order to arrest the change in length.

Abstract: A vertical angle adjustable quick-attaching coupler for attaching an implement to the three point hitch of a vehicle. The coupler comprises a coupler frame, attachment means for pivotally mounting the coupler to the three point hitch of the vehicle, hook members for attaching the coupler to the implement, and angle adjustment means which includes a lever arm and a hydraulic cylinder for adjusting the vertical angle of the plane defined by the three attachment points of the three point hitch relative to the plane defined by the hook members of the coupler.

Abstract: A reversible moldboard plow has a plow carrying beam swingably mounted at the rear crossbar of a frame which carries trunnion mounted cylinders connected to the beam for moving the beam, the front of the frame carrying hitch pins for connection to a tractor hitch, the hitch pins being vertically movable in alternate relation in order to tilt the frame and the beam with the moldboards supported thereon. The hitch pins may be moved by independent cylinders and pistons or, alternately, by the movement of a transverse hitch bar on which they are mounted.

Abstract: An improved soil leveling apparatus (10) includes a frame (12), connecting hitch means (14), and adjustable lost motion linkage (48) secured to the top connection point (52) of the hitch, and an optional scarifier assembly (16) which is supported on a connector (66) pivoted between the legs (36, 40) of the hitch. The scraper member (18) of the frame (12) is of generally inverted J-shaped cross section, and tine subassemblies (90) can be substituted for the teeth (78) on the scarifier assembly (12).

Abstract: The invention relates to an three-point coupling device (3) for connecting a tractor to an implement (4). Two lower hitch arms (5, 5a) have been provided with catching hooks (7, 7a). An upper hitch arm (8) has also been provided with a catching hook (11). The lower hitch arms (5, 5a) may be raised or lowered by a power drive via lifting bars (10, 10a) and lifting arms (9, 9a). The upper hitch arm (8) is suspended from a holding device (20, 20a) which is associated with the lifting bars (10, 10a). As a result, the upper hitch arm (8) may be moved jointly with the lower hitch arms (5, 5a) upon actuation of the power drive which moves the lifting arms (9, 9a) and the lifting bar (10, 10a). It is no longer necessary for the tractor driver to hold the upper hitch arm (8) himself and place it on the upper coupling point (14) of the implement (4).

Abstract: A moldboard plow with a bidirectional moldboard which includes a moldboard frame that can turn by use of a reversal mechanism which also serves as a tilting mechanism. Included is a hitching frame which has a central pole and hitching plates, a moldboard frame having a guide member extending along the longitudinal axis thereof, a set of bidirectional moldboards fastened to the hitching frame by a pivot pin for reversal of the plow so that the bidirectional moldboards cuts into the soil on a right and left side of the plow, a tilting mechanism for tilting said hitching frame and a reversing mechanism connected to the guide member of the moldboard frame for moving the moldboard frame and the set of bidirectional moldboards to the right side and left side of the plow.

Abstract: Improved tractor frontal three-point connection apparatus with lower links attached to the front bolster at a pivot axis behind the front panelling of the tractor housing and pivotable to positions behind such panelling, the lower links having rear extensions acted on by lower ends of substantially vertical hydraulic cylinders to pivot the lower links to a substantially vertical orientation, thereby facilitating movement of lower links to inoperative positions over the front axles. Preferred embodiments include a tubular rock shaft rotatably mounted on the front bolster and having rearwardly extending cylinder-attachment lugs, opposite ends removably receiving journals of the lower links, and pocket members at each end receiving and interacting with the rear extensions of the lower links.

Abstract: A ditch forming apparatus includes a pair of discs rotationally mounted in a back-to-back arrangement to a support frame with their respective convex surfaces in facing relation and their concave surfaces directed outwardly. The discs are oriented in an angled manner relative to the direction of displacement of the support frame such that the leading edges of the discs overlap along the displacement direction, with one disc positioned aft of and lower, or deeper in the soil, than the other disc to compensate for the increased drag imposed on the forward disc in providing straight tracking for the apparatus through the soil. Drag compensation may also be provided by orienting the aft disc at a greater angle relative to the direction of displacement of the apparatus than the forward disc.

Abstract: A plow having a forwardly facing V-notched digger blade, lifting wings, side arms, frame members, ears for attaching a hitch and breakable attachment of the hitch to the tow vehicle is provided. In use the plow cuts or digs out subterranean plant roots, and lifts soil for aeration.

Abstract: A weight transfer linkage arrangement for connection between the three-point hitch of a tractor, a tool bar carrying agricultural implements and a hitch. The linkage arrangement includes a first parallel linkage connecting the tool bar and the hitch and a second parallel linkage connecting the three-point hitch of the tractor and the tool bar. The first and second linkages are both adaptable to be moved between corresponding cooperative lowered and raised positions, such that the tool bar may be raised and lowered without raising and lowering the hitch. Force applying means are connected to the first linkage to apply downpressure on the tool bar when the linkage arrangement is in a lowered position.

Abstract: A hitch adapter is attached to the tongue of an implement having components adapted for being driven by a tractor power take-off shaft and is constructed to permit the implement to be semi-integrally mounted either to a tractor having a hitch arrangement consisting only of a three-point hitch or to a tractor having a hitch arrangement wherein a quick coupler is carried by its three-point hitch without necessitating a change in the length of a drive shaft interconnecting the tractor power take-off shaft with an input shaft of a transmission assembly carried by the implement tongue.

Abstract: A tractor has a typical three-point hitch with lower lift arms and an upper stabilizing arm comprising, in part, of a transverse horizontal rod extending between the lift arms. A pair of connecting structures are mounted on the implement and spaced on the order of the lift arms but being transversely offset therefrom. Each of the connecting structures includes a vertical plate having a U-shaped edge opening vertically for receiving the transverse bar. A link is mounted on the fore-and-aft plate and extends from one position in which it traverses the opening of the U so as to retain the bar in the nip area of the U-shaped edge and a position in which it extends vertically and opens up the U-shaped edge so that the bar may have ingress and egress from the nip area. A latching rod extends from the plate and there is provided an opening in the link that receives the latching rod.

Abstract: A variable length lift link for a three-point hitch has two parts which are threaded together such that one part which is formed as a spindle moves relative to the other as it is rotated. Rotation of the spindle is provided by way of an electric motor which drives the spindle through a step-down transmission, including a worm gear. The electric motor can be controlled from either the operator's station on the vehicle or from behind the vehicle in the area where an implement is attached. Limit switches control the maximum and minimum lengths of the variable length link.

Abstract: In a working vehicle having hydraulic lift cylinder (39) on the top of rear end of the vehicle and seat (34) above the cylinder case (33) of such cylinder, fluid supply system is provided which supplies fluid from a single pump (47) to both of the lift cylinder and fluid-operated working implements. This system comprises first and second valve assemblies (49, 50), connected in series and mounted on the cylinder case (33), for controlling operation of the lift cylinder and working implements, respectively. The second valve assembly (50) is particularly disposed, for an easy mounting and piping, horizontally along a lateral direction within large open space before the cylinder head (81) of cylinder case (33) and below the seat (34) by mounting same to the front of head (81). For this, stop valve (52) for lift cylinder (39) is disposed within the head (81) so as to be displayed laterally and a vertical seating surface (96) is formed to the front of head (81).

Abstract: Disclosed herein is a support for supporting the load sensing bar of a draft control system. The support includes an L-shaped bracket which is adapted to have one leg attached to a vehicle and the other extending outwardly therefrom. The attached leg has a through opening with a spherical bearing therein through which the load sensing bar passes. A stop is carried on the other end of the outwardly projecting leg to limit bending of the bar. A clip is also carried by the outwardly extending leg and extends to a position where it will prevent the bar from sliding out of the bearing in the attached leg in the event the bar breaks.

Abstract: A powered adjuster for a three-point hitch upper arm includes a housing adapted for rotatably supporting a drive hub having opposite ends with oppositely threaded openings for receiving the oppositely threaded connection members of a three-point hitch upper arm. A motor is supported on the housing and a drive connection is provided for rotating the drive hub in response to actuation of the motor. Finally, a coacting guide mechanism is provided on the housing and one of the connections members for preventing relative rotation between the housing and connection member while permitting relative axial sliding movement therebetween to accommodate powered extension and retraction of the upper arm by the adjuster of the invention.

Abstract: A quick coupler latch mechanism includes a latch pivoted on a quick coupler frame above a hook having a recess. A guide pin extends horizontally through the frame and is supported by thickened frame parts to resist bending deformation of the guide pin. An operator-controlled lever device moves a control bar within the frame. A guide member is rigidly fixed for movement with the lower end of the control bar and has a recess which slidably receives the guide pin. The guide member operatively engages the latch to pivot it between open and closed positions.

Abstract: An agricultural tractor comprises lifting devices to which are hitched rotary supports in the form of rollers. The lifting devices push the rollers downwardly relatively to the rest of the tractor. This transfers some or all of the weight of the tractor to the rollers which reduces or eliminates pressure on the underlying surface, and consequent soil compaction, applied by wheels of the tractor. The rotary supports may be drivable and improve traction. If all of the weight of the tractor is placed on the rotary supports, the wheels are raised from the ground.A system is also described for automatically detecting and eliminating or correcting for skidding of the wheels of the tractor.

Abstract: A tractor front end hitch comprising a main frame removably secured to the front end of a tractor and having a pair of lower lift arms pivotally secured thereto and extending forwardly therefrom for connection to the implement. A pair of upper lift arms are pivotally secured at their rearward ends to the main frame and extend forwardly therefrom above the lower lift arms. A length adjustable float arm assembly is pivotally connected at its upper end to the forward end of each of the upper lift arms and is pivotally connected at its lower end to one of the lower lift arms rearwardly of the forward end thereof. Each of the float arm assemblies has a clevis element at the lower end which is provided with an elongated slot to permit the associated lift arm to vertically move or float relative to the upper lift arm associated therewith. A float stop pin is removably insertable into the slot in the clevis element to limit the float.

Abstract: An implement attachment for the front end of a tractor comprises a tractor frame having transporting wheels and a frame device fixedly carried by the tractor frame, which extends parallel to the direction of transport. The frame device projects forwardly beyond the front end of the tractor. An actuating linkage movably carried by the tractor and also projects forwardly thereof and in combination with the frame device carries a three point hitch, one of the three points being on the linkage and the other two being on the frame device. The two hitch points are horizontally spaced transversely of the tractor and the one hitch point is disposed above such two hitch points. A conventional three point hitch can be connected to the three hitch points and manipulated by means of the actuating linkage.

Abstract: An attaching device is described for facilitating the attachment of various implements to the chassis of a motor vehicle. The attaching device includes a first frame having a pair of generally L-shaped support members with vertical and horizontal legs. The vertical legs are connected together at an upper end by a cross bracket and are tiltable relative to the chassis of the vehicle by a hydraulic cylinder connected between the chassis and the cross bracket. The horizontal legs are pivotally attached at one end to a lower point of the chassis and permit the first frame to pivot thereabout. A second frame is movably supported by the vertical legs of the first frame and contains a plurality of coupling elements arranged in the preset relationship for easy coupling to an attachable implement. The second frame is movable relative to the first frame by hydraulic drive cylinders which provide up and down movement of the second frame in a stepless manner.

Abstract: An attachment device is shown for mounting an implement onto the front of a motor vehicle. The attachment device is substantially contained within the hood portion of the vehicle and includes a pair of vertically aligned support members fastened to the frame of the vehicle. A first pair of swinging arms are pivotally attached to the support members and extend forward thereof to merge into a single pivot point. A second pair of swinging arms are also pivotally attached to the support members, below the points of attachment of the first pair of swinging arms and in a parallel fashion thereto. The forward ends of the first and second pair of swinging arms support an adjustable implement. The swinging arms are vertically adjustable by a pair of lifting means, such as hydraulic cylinders, which are pivotally attached at a lower end to the frame of the vehicle and are rotatably attached at their upper ends to the first pair of swinging arms.

Abstract: A pick-up hitch arrangement for a vehicle comprises a rigid support frame which is secured to a driven axle of the vehicle and has a pick-up hitch pivotally mounted thereon. The support frame is pivotally attached to the body part or chassis of the vehicle by means of pairs of upper and lower links. Each respective upper and lower link extend in directions which converge in vertical alignment with or forwardly of the center of gravity of the vehicle to reduce the tendency of a load applied to hook causing stretching of the vehicle rear springs and inclination of the chassis. The upper links converge above or rearwardly of the axle to give lateral stability to the hitch arrangement.

Abstract: An overload coupling member is used as a strut to interconnect the upper link of a tractor lift device with an implement, such as a cultivator. The member includes two portions that are moved towards one another upon overload to allow the implement to pivot upwardly on the other two links. One portion has an inner end sleeve pivoted to a further sleeve on the other portion's inner end and relative movement between the two portions is prevented by a shear pin that extends into an opening of the sleeves. Upon overload, the pin shears and the portions jack-knife until the lift raises the implement past the obstacle and the implement is then lowered. The inner opening end is normally closed by an abutment member, but when the portions are pivoted, the opening is exposed and a severed pin portion falls out. The shear pin can have a number of severable portions and be spring biased to slide in a holder and establish rigid connection between the two portions a number of times.

Abstract: A top mounted lift hydraulic ram on a tractor for a three-point hitch mounted on a removable subassembly to facilitate assembly and convenience in servicing.

Abstract: An improved hitch for attaching a trailer to a farm type tractor is disclosed, with a means for supporting the hitch at the distal end thereof by attachment to a support member provided on the tractor for implement support.

Abstract: A coupling apparatus for allowing one person to releasably connect a first object to a second object, which second object has a first engageable portion, a second engageable portion and a third engageable portion, is disclosed. The coupling apparatus includes a first connector mechanism associated with the first object for releasably engaging the first engageable portion of the second object. The coupling apparatus further includes a second connector mechanism associated with the first object for releasably engaging the second engageable portion of the second object. The coupling apparatus further includes a third connector means associated with the first object for releasably engaging the third engageable portion of the second object. Also included in the coupling apparatus is a support member, such as a frame, for interconnecting the first, second and third connector mechanisms.

Abstract: An implement for use with a prime mover, such as a tractor, for applying a uniform coating of a liquid sealant to pavement comprising a plurality of spray tubes for spraying a coating of the liquid sealant onto the pavement and a rotary brush for brushing the sealant onto the pavement and for ensuring that a uniform coating of the sealant is applied to the pavement.

Abstract: A three-point tractor hitch system includes a coupling hook structure as the upper link thereof formed with a hook body defining a concave recess for receiving therein in locking engagement a coupling sphere. A locking bolt received within a rectilinear opening extends into the concave recess of the hook body with a curved locking surface adapted to engage the contour of the coupling sphere. The locking bolt is pivotally mounted at its opposite end to a control lever having a generally U-shaped recess formed therein to engage a bearing pin mounted on the hook body. The U-shaped recess has lateral sides arranged so that imaginary extensions thereof will intersect the axis of the locking bolt and bearing means are interposed between the control lever and the hook body on a side of the pivotal coupling of the locking bolt to the hook body opposite the side on which the U-shaped recess is formed.

Abstract: An elongated coupling member is connectable to the upper link of a three point tractor lift and to an implement carried by the lift, such as a spreader. The member includes a piston slideably mounted in a cylinder and a hydraulic circuit between a space at each side of the piston. The piston can be adjusted to a set position in which the relative positions of the piston and cylinder are maintained by hydraulic fluid within the circuit and spaces. An overload device, such as a spring biased, one-way valve, is included in the circuit so that upon overload, the piston moves, usually to lengthen the coupling member and allow fluid to flow from one space to the other. In one version, an overflow space or reservoir is in the circuit to accomodate excess fluid when the piston is shifted and one space is larger than the other.

Abstract: An upper link storage device having a post secured to the cross bar of an inverted U-shaped bracket. A sleeve slidably retained on the upper link engages the post to positively arrest the upper link.

Abstract: A lower draft arm extension link stop in a tubular member of a lower draft arm of a three-point hitch for engaging the extension link in its extended position. The extension link is provided with a relief portion which clears the stop when the link is angular inclined so that it can be withdrawn from the tubular member. The tubular member includes a latch, axially aligned with the stop, for holding the link in its contracted position.

Abstract: An agricultural tractor having at least four side-by-side pneumatic rear tires which provide a relatively narrow path of travel, there being a narrow rear portion of the tractor's body having about the same width or less as seen in plan of each of the tires and which is centrally disposed between the tires. A three-point lifting device and towing bar extend rearwardly from the rear body portion and the lower links of the lifting device or bar part extend normally outwardly relative to the body of the tractor in the vicinity of the adjacent central tires to function as a scraper for mud or other material which accumulates on the tires in use. The towing bar which extends rearwardly from the bottom of the rear body portion is rectangular as seen in plan with its sides adjacent to the internal side walls of the two central tires wherein it also acts as a mud scraper, such towing bar being at a level above the ground of about thirty to forty percent of the tire's radius.

Abstract: Removable lifting devices for tractors having horizontal front wheel axles which pivot relative to the contour of the ground, one device having tubes pivotably connected on each side of the tractor frame which rotatably and pivotably receive further tubes connected by a hinged structure to the tractor's forward axle and which extend forwardly thereof to be interconnected across the front of the tractor. The connecting hinged structure permits pivotable movement of the tube relative to the axle about substantially horizontal axes parallel and perpendicular to the longitudinal axis of the tractor. The front structure connecting the tube portions extending forwardly from the axle includes a hydraulically operated three-point lifting device wherein hydraulic cylinders are disposed within a quadrangular arrangement of pivotable arms including the lower of the three-point lifting device's links.

Abstract: A mechanical link member is provided which is easily variable in length for ease of connection yet rigid in operation by the use of hydraulic valve and screw-type adjustments. In addition to an interrupted flow position which prevents relative axial movement of the ends of the link member, the hydraulic valve has full flow and restricted flow positions to control the rate of length adjustment. A spring positions the mechanical link to a midrange position when the hydraulic valve is opened and the link ends are not attached to a load.

Abstract: A reversible plough has a headstock, a plough frame and a reversing spindle secured to the frame and rotatable in the headstock. A stop member rotatable about the reversing spindle is provided with two adjustable stops to enable the two ploughing positions of the plough frame to be preset relative to the headstock. To reverse the plough frame from one ploughing position to the other, the spindle and thus the plough frame is rotated by a hydraulic ram and an abutment on the spindle engages the stop member to cause said member to rotate with the spindle until the corresponding stop engages the headstock to locate the spindle and hence the plough frame in the other ploughing position.

Abstract: A three point linkage for coupling a tractor or similar vehicle to a working tool includes two lower guide members and an upper guide member which is resiliently connected to the lower guide members. A catch hook is located at one end of each of the guide members for coupling to the working tool. The other end of each of the guide members is coupled to the tractor. The upper guide member is longitudinally adjustable and includes an inner guide element telescopically cooperating with a spring loaded outer guide element. A nut, carrying pivotally movable locking jaws, is slidably carried on the outer guide element for fixing the outer guide element relative to the inner guide element. The catch hook of the upper guide member is carried at the opposite end of the outer guide element from the nut.

Abstract: Rotary cultivator having resilient vibration damper acting between the cultivator's drive and a reaction member, to absorb vibration generated by varying torque reaction exerted on the drive during use.

Abstract: An upper link storage clip for securely maintaining the upper link of a tractor three-point hitch in its storage position without side to side movement, the storage clip being so designed that the upper link can be readily placed within it by a one hand operation. The upper link storage clip utilizes a spring biased pivoted hook to maintain the upper link between a pair of rearwardly extending spaced apart arms when the upper link is in its storage position. The rearward surface of the pivoted hook is provided with a cam surface so that as the upper link is forwardly swung towards its storage position the pivoted hook will be cammed to an open position permitting the introduction of the upper link between the pair of arms, the spring causing the pivoted hook to swing to its closed operative position when the upper link attains its storage position.

Abstract: Apparatus for attaching a bucket to a conventional three-point hitch on a tractor to control dumping of the bucket. The bucket is pivotally secured by stub shafts to a yoke-shaped frame. The frame is secured to the bottom portion of a three-point hitch and has an upwardly extending center post attached to the adjustable upper link of the three-point hitch. A rod, pivotally secured to the rear edge of the bucket, is slideably disposed through a sleeve pivotally secured to a lug attached to the center post. A stop member is pivotally secured to the lug over the sleeve and is spring-urged forward over the upper end of the rod to limit movement of the rod upwardly through the sleeve. When the stop member is pivoted rearwardly away from the rod by pulling a rope, the rod slides upwardly through the sleeve as the tractor moves forward dumping the contents of the bucket onto the ground.

Abstract: An earth-working tool has mounting means at one end for attachment of the tool to the frame of an agricultural implement, a tool blade down the forward edge of the tool and attachment means at the other end of the tool for securing a tool point. The mounting means is so arranged that the tool may be attached to the frame in such a manner that the tool blade will form a rearward angle, from the top end to the other end, in relation to a line normal to the direction of forward movement which the tool will take during use, with the result that soil tilled by the tool point will be prevented from rising to the surface by the action of the rearwardly directed tool blade. Ideally the tool may be mounted so that the tool blade will be forwardly directed, either by reversing the tool or by providing alternative mounting holes for mounting the tool to an agricultural implement.

Abstract: A wheeled trailer, such as a liquid manure spreader, has a draft tongue which is adapted for attachment to a draft connection of a farm tractor so as to trail behind a soil working implement, such as a liquid manure injector, which is mounted upon the tractor three point hitch; and a driven member, such as a fertilizer pump, is driven from the tractor power take-off which is in a horizontal plane above that of the draft connection. The length of the draft tongue is sufficient to avoid interference between the implement and the vehicle on turns. The power train for the driven member consists of a drive shaft connected to the driven member which is in a horizontal plane below that of the p.t.o., an input shaft on the forward part of the tongue which is in the plane of the p.t.o. and is detachably connected to the p.t.o. by a drive link, and a driving connection between the input shaft and the drive shaft.

Abstract: A first farm implement having a front three-point hitch connection for mounting on a tractor is equipped with a rear three-point hitch means for connection with a front three-point hitch means on a second farm implement so that both farm implements can be lifted and towed in tandem fashion, or each implement can be individually lifted or towed by a single tractor. The first implement includes an elongated transverse tool bar which carries the respective connections of both the front and rear three-point hitch means therefor in alignment longitudinally of the tractor.

Abstract: This combine manure-crushing and soil-mixing rotary machine adapted to be hitched to a tractor is provided with a tool carrier shaft operable at least at two different velocities, namely a higher speed for performing the manure-crushing operation and a lower speed for performing the soil-mixing operation; the change from one velocity and one mode of operation to the other is obtained by simply interchanging gear wheels and reversing the machine end hitched to the tractor. (FIG.

Abstract: A tractor attachment comprised of a lifting boom hinged to a base carried by an A-frame or the like as part of the three point hitch system that is moveable vertically and adjustable as to height. The boom swings upward by means of an extensible actuator operable between the base and a lever that positions an adapter on which the boom is replaceable to receive a drop line or the like at its terminal end.

Abstract: A subsoil plow having a plurality of forwardly facing C-shaped plow teeth arranged on a rigid frame in a generally V-shaped array. Each plow tooth has an upper portion, a curved shank portion, and a bottom tip and is mounted on the frame by a so-called pivot bolt located directly above the tip of the tooth and by a shear bolt spaced from the pivot bolt, the shear bolt being adapted to fail in shear upon application of a predetermined load to the plow tooth, such as may be occasioned upon the tooth striking an underground object as the plow is pulled through the field, so as to release the tooth and to permit it to swing upwardly and rearwardly about the pivot bolt without the tip of the tooth digging deeper into the ground.Also disclosed is a hitch which enables the plow to readily be coupled to a tractor equipped either with a category 2 or 3N or a category 3 three point hitch with or without an automatic coupler.

Abstract: An earthworking implement mounted on a three-point hitch of a draft vehicle with a hitch assembly. The hitch assembly has members mounted in clamps secured to a main transverse beam. Two of these members include lower forward projecting portions and a third member therebetween has an upper forward projecting portion. The two lower portions are connected to a transverse bar, which is attached to the draft links of the three-point hitch. The upper portion is connected to the control link of the three-point hitch. These members are individually adjustable, whereby they may be adjusted to fit variations in structure of three-point hitches. A plurality of parallel linkages movably connect a transverse tool bar to the beam. Row guide units having guide and gauge wheels and furrowing tools are mounted with clamps to the tool bar. Earthworking tools, herbicide incorporators and seed planters can be mounted with clamps to the tool bar.