Abstract: Motor graders and circle drives associated with the same. An example work vehicle includes a frame, a circle drive coupled to the frame, moldboard coupled to the circle drive and a planetary gear apparatus including an output shaft configured to mesh with the circle drive to rotate the circle drive relative to the frame.

Abstract: A mount for carrying a plurality of field-conditioning implements selected from trash whipping implements, rolling baskets and coulters for connection to a planter or other multi-row implement is disclosed. A height and force adjustable mounting system is also disclosed that enables the force of such an implement on the soil to be modulated as desired.

Abstract: The combination of a rolling basket tillage implement and a seed distribution implement is disclosed. A height-adjustable mounting system for a rolling basket soil tillage implement is also disclosed for use with a planter that enables such an implement to be raised above the soil as needed to avoid wet conditions.

Abstract: A ripper assembly includes a linkage assembly and an actuator. The linkage assembly has a mounting section, a frame member with a frame axis, a carriage member and a connecting member. The actuator is movable along an actuator axis between a retracted position and an extended position. The linkage assembly is movable between a ground engaging position at which the actuator is at the retracted position and a raised position at which the actuator is at the extended position. An angle between the frame axis and the actuator axis is between approximately 40 degrees and 65 degrees when the linkage assembly is in the ground engaging position.

Abstract: The combination of a rolling basket tillage implement and a seed distribution implement is disclosed. A height-adjustable mounting system for a rolling basket soil tillage implement is also disclosed for use with a planter that enables such an implement to be raised above the soil as needed to avoid wet conditions.

Abstract: A precision hoe opener assembly is provided with improved accuracy of seeding as well as improved control over the opener and packer wheel assemblies. The opener assembly includes a hydraulically-driven parallel linkage assembly, a lost motion linkage, a hoe opener, and a packer wheel. The design provides improved seeding accuracy, by adjusting assembly components to and compensating for changes in terrain elevation.

Abstract: A ripper assembly includes a beam assembly with a central ripper shank and tip flanked by a left linkage and a right linkage. In order to improve visibility of the central ripper shank and tip from an operator station of a track type tractor, the left linkage and the right linkage are unconnected to each other, except via the beam assembly. Without cross bracing between the left and right linkages, the beam assembly and individual linkages are configured to absorb side and twisting loads that may occur during production ripping. The ripper assembly left and right linkages may be of a fixed or variable parallelogram design. The hydraulic actuator(s) of the ripper assembly are configured to extend when moving to a dig position to provide a high penetration force. Part of the ripper assembly linkage shares a common pin with its associated hydraulic actuator.

Abstract: A ground engaging apparatus (10) has a support plate (50) pivotally attached to a frame (100); a pair of arms (30, 40) interconnecting the support plate (50) and a shank support (60), which supports a shank (70) and ground follower (90) and first and second biasing rams or springs (200, 300), to maintain the ground follower (90); against the ground (91) but allow controlled break out of a ground opening, or tillage, tool (81) if an obstruction is engaged.

Abstract: A flexible bag for receiving flowable material is suspended, as from a gantry, and is tethered transversely and yet has substantially free movement along three sides for complete filling. The length of the tethers may be selected to prevent complete collapse of the bag when empty, and tubular perforated members having an “H” configuration within the bag may be provided for this purpose. Auxiliary structures provide for cooling of materials provided to the bag, their diffusion on inlet to the bag, their recirculation in the bag, and their removal from the bag. Accessories for use with wet gas provide for separation of inlet liquid and drainage of condensate within the bag.

Abstract: A seed planting assembly is provided having a plurality of planting units supported by a tool bar, each of which being operable to form a seed trench in soil, plant seeds in the seed trench, and close the seed trench. Each planting assembly is supported by the tool bar via a mounting assembly that can be actuated by a vertical positioner to raise and lower individual planting units.

Abstract: An attachment device for attaching an implement to an attachment plate for a vehicle. The attachment device includes at least two sets of two or more arms, each arm having a first end and a second end, the first end of each arm being operably coupled to the implement and the second end of each arm being operably coupled to the attachment plate, wherein the two sets of two or more arms allow the implement to be tilted such that a first end of the implement may be raised to a higher vertical position than a second end of the implement.

Abstract: A ripper carriage assembly has a transverse cross beam fixedly mounted at a central portion of the cross beam to a ripper implement support structure. The distal ends of arms extending outwardly from the central portion of the transverse cross beam are adapted for pivotal connection to a pitch control mechanism. Stress relief notches are formed in the transverse cross beam at a position between the distal ends of the arms and the central rigidly mounted portion of the beam. Energy generated as a. result of the ripper tip twisting upon impact with rock or other solid objects in hardened ground is stored in the transverse cross beam, and subsequently returned to the ripper tip to bring the tip into a desired operational orientation.

Abstract: The invention relates to an implement for treating soil and, in particular, to an implement used to improve the hygroscopic properties of the soil by making holes in it using one or more tools mounted on an irregular, variable, quadrilateral jointed structure pivoted to a frame and actuated by a linkage system which can modify its configuration in such a way as to drive the tool into the soil and then angle it gradually so as to widen the bottom of the hole.

Abstract: An agricultural implement such as a planter has wing sections which, when folded for transport, are stacked side-by-side above a center section. Improvements include structure which reduces bending moments about the pivot connections between a guide link forming part of a four-bar linkage which stacks the wings, and the wing frame. A drive train for the row unit meters is also placed in the transport position without disconnecting the drive shafts.

Abstract: The harrow includes a series of sleeves each having a plurality of teeth and telescoped non-rotatably over a rod which is rotatably journaled by laterally spaced bearings supported by mounting arms which, in turn, are attached to a tool bar. The teeth roll over the ground and pulverize and level the soil as the tool bar is pulled forwardly. The toothed sleeves may be laterally positioned as necessary on the rod to enable the bearings and the mounting arms to be located laterally as required to permit attachment of the arms to any particular tool bar. The tool bar is supported by parallel links which may be adjusted upwardly or downwardly by manually operable jacks in order to change the operating height of the harrow, the jacks being connected to the links in such a manner as to enable the links to float upwardly or downwardly in the event the harrow encounters a rise or falls into a valley.

Abstract: A planter row unit having a frame with a first unitary rigid plate and structure for attaching a soil engaging component in an operative position on the first unitary rigid plate and first structure cooperating between a towing frame that is movable in a forward towing direction and the first unitary rigid plate for attaching the first unitary rigid plate to a towing frame so that the first unitary rigid plate a) follows forward movement of the towing frame to which the first unitary rigid plate attaches and b) is movable vertically relative to a towing frame to which the first unitary rigid plate attaches to allow the first unitary rigid plate to move conformingly over uneven terrain.

Abstract: An implement for preparing a field includes a ground engaging device that allows the implement to be pushed or pulled on the field. The ground engaging device includes a reversible roller with projections joined to an outer surface thereof to engage the ground. The projections do not extend along the complete length of the roller but rather a portion thereof thereby reducing the power necessary to rotate the roller. The implement includes reversible guards for keeping the disturbed ground in front of the roller.

Abstract: A grain drill is disclosed having a folding frame for parallel operation and a parallel link system that controls the tension to earth openers in order to produce relatively constant downward pressure for the openers. The grain drill includes a rotating tool bar for facilitating the adjustment of downward pressure to the openers, controlling the ground cutting depth of the openers and raising the tools to obtain the ground clearance needed for road transport. The drill has disc openers with axially collocated discs having different outer diameters and a narrow angle between the opener discs producing a "V" shaped groove for seeding. The grain drill has a common horizontal center to support seed boxes, fixed dual wheels and a hitch for connection to a pulling vehicle.

Abstract: A towable road tender device for grading unpaved roadway surfaces. The tender device may be hitched to commercial vehicles but is particularly suited for use with private vehicles, such as small tractors and pickup trucks. A set of relatively lightweight frames reduce the weight to be pulled by the vehicle. The towable road tender device is sized to be operated using small-scale power take-off units commonly available in private vehicles, such as, for example, the power units of conventional front-end plows. The set of lightweight frames includes a support frame that secures the tending tool, a wheel frame that pivots the rear towing wheels either toward or away from the support frame, and an attachment frame joining the other two frames to a hitch on the towing vehicle. The attachment frame is designed to keep the support frame parallel to the plane of the underlying roadway surface as that support frame is raised or lowered.

Abstract: The disclosure relates to a road transportable, adjustable or non-adjusta width trailable plow which is adapted to be pulled by a tow vehicle, a four bar linkage interconnects the plow with the tow vehicle allowing the plow to yaw with respect to the vehicle while limiting motion in the pitch plane to parallel displacement, the horizontal links in the four bar linkage are telescopic and spring biased to allow for surge between the tow vehicle and the load and a frame portion securable to the tow vehicle is gimballed with the hitch on an axis parallel to the links for allowing the plow to roll with respect to the tow vehicle.

Abstract: The adjustable blade apparatus (10) is adapted for use with an earth moving vehicle (12). It includes a support frame (20) which is pivotable in the vertical plane relative to the vehicle (12). A blade assembly (22) is rotatably secured to a connecting frame portion (54) of the support frame (20) by means of a turntable (26) and a swivel connection (27). The blade assembly (22) is moved relative to connecting frame (54) by hydraulic cylinders (28,30).

Abstract: An arrangement of a roller in combination with a draft vehicle comprising a draft frame, axle means supported by the draft frame, and roller supported by the axle means to allow rotational freedom about a central axis of a cylindrical shape of the roller, the arrangement being characterized in that the draft frame is connected to the draft vehicle by means constraining rotation of the draft frame relative to the draft vehicle about a vertical axis.

Abstract: An agricultural tool assembly includes a rotary disk mounted on a lower end of a rotary spindle. A mount for the spindle includes a shank adapted to be received in the vertical slot of a clamp and a sleeve for rotatably supporting the spindle. The sleeve is connected to the shank by spaced side plates connected to the sleeve with a lower pivot member and an upper fastener extending through arcuate slots in the spaced plates. A cultivator implement has front and rear disk gangs and a rear centered tool assembly. An onion undercutting implement has a front tool bar with front tool assemblies clamped thereto and a rear tool bar with rear tool assemblies clamped thereto.A tool assembly for material distribution has a spindle with a through hole, a swivel fitting at the inlet and a flared section at the outlet. Crop cutting and windrowing apparatus has pairs of tool assemblies tilted in and down toward the crop row and forwardly and down.

Abstract: An improved vehicle-mounted lifting apparatus for a vibratory device. The apparatus includes bearings in which a principal pivot shaft is journaled, a lifting link and at least one center-bonded joint spaced along and nonrotatably mounted on the pivot shaft, a lift cylinder secured to the vehicle and extending to the lifting link, and a rigid arm extending from each center-bonded joint to a support for the vibratory device. Although a compact simplified lifting structure, excellent vibratory isolation to protect the lift cylinder is provided.

Abstract: An agricultural planter has a main carrier frame attached to a tractor by an hydraulically actuated telescoping tongue. Individual row units are mounted on a lift frame which in the illustrated embodiment has a center section and left and right wing sections. The wing sections are mounted to the center section for independent vertical pivotal motion relative to the center section in the use position. Power locks secure the wings rigidly to the center section for road transport. The lift frame is mounted to the carrier frame by a vertical pivot post and an hydraulically powered lift linkage. The pivot post may be rotated by an hydraulic cylinder under control of the operator. In the use position, the hitch tongue is retracted and the lift frame is lowered and extends transverse of the direction of travel.

Abstract: In a drill, there is provided the combination of a pair of foldable pivot frames to each of which is attached a wheeled wing frame for up and down swinging movement, together with a tongue assembly for effecting the folding action, as well as a subframe for each wing made up of a T-frame and a hoe frame especially adapted for opening seed-receiving furrows and pressing the soil in each seeded furrow.

Abstract: A system for actuating a plurality of farm implements includes a frame adapted to be connected between a tractor and a first farm implement such as a drill. A tool frame, adapted to be connected to one or more additional farm implements, is pivotally suspended beneath the frame by front and rear support linkages. The rear support linkages are also connected with a linkage which raises and lowers the grain drills on the drill. An hydraulic actuator is connected to the front support linkage to move the tool frame and the drill between a transport position and a working position. Adjustment means are provided at the connection between the rear support linkage and the linkage to the drill for determining the transport height of the drill, the spring tension on the grain drills, and the height of the rear of the tool frame with respect to the front of the tool frame.

Abstract: Earthmoving vehicles are often provided with a linkage arrangement on one end that is utilized to manipulate a work implement, such as a loader bucket. The linkage typically includes a tilting arrangment for the bucket that incorporates a tilt lever that is mounted to a lift arm that supports the bucket. The mounting between the tilt lever and the lift arm is normally of a complex nature requiring multiple bearing surfaces and lubrication means. Others may have a structure that requires exact positioning between the relative components or a failure will occur due to improper loading. The linkage arrangement of the present invention provides a mounting member that is attached to only one of the tilt levers. It also includes an axial motion limiter that is attached to the other tilt lever. In doing so, a very simple and economical mounting device is provided. The mounting device also allows the tilt levers to rotate with respect to each other so that each of the levers function to bear a portion of the loading.

Abstract: An outrigger construction for raising and supporting selected portions of a railer or other wheeled vehicle, e.g. to provide a level stable vehicle attitude while the vehicle is located on sloping terrain. The principal feature of interest is a low-cost power mechanism for operating the outrigger. In one case the power mechanism comprises a winch-cable system. In another instance the power mechanism comprises a level-link assembly.

Abstract: The system includes a pull-type frame with a forward line of disc blades widely spaced to part the trash, mix it with soil and displace most of the mixture laterally on top of previously undisturbed soil, thereby creating strips of ground which are alternately cleared and windrowed. At least a second line of disc blades, also widely spaced, is placed to the rear of the first line; and these blades are offset laterally from, and located in the windrows formed by, the discs of the first row, to part and return at least some of the previously cleared trash and previously undisturbed soil back onto the cleared strips while still leaving strips of undisturbed soil with an accumulation of cleared trash on top. Cooperating with the discs are novel plow points located in the undisturbed strips having accumulated layers of cleared trash.

Abstract: An agricultural tillage implement has a main frame provided with support wheels and carrying the first set of ground working tools. A first lift mechanism raises and lowers the main frame relative to the support wheels. A sub-frame, carrying a second set of ground working tools, is adjusted in height relative to the main frame by means of a second lift mechanism comprising a single rock shaft and four-bar linkage. Vertical frame extensions on the main frame and the sub-frame provide parallel links in the four-bar linkage to permit greater angular adjustment of the rock shaft and, hence, greater vertical adjustment of the sub-frame for a single rock shaft actuator.

Abstract: A ground working implement is disclosed which comprises three rectangular frames connected together by means of hinges. A center frame is provided with a tongue for attachment to a traction device such as a tractor. Each of the frames is provided with a packer wheel attached to and extending along the rear portion thereof and each of the frames is also provided with a separate frame from which S tines depend. S tines are sometimes referred to as Danish tines. The separate frames are connected to the first frame by means of a bell crank which is fulcrumed on members depending from the first frame and which are connected together by means of levers which in turn are connected to a rotatable shaft. Each frame is provided with a rotatable shaft which are connected together for concurrent rotation by an articulated connection permitting the outermost frames to be rotated 180.degree. by means of hydraulic cylinders and supported on the center frame for road transportation.

Abstract: A tillage system includes forward and rear sets of widely spaced discs and a set of plow points. The discs in the forward set are mounted at spaced intervals so as to leave alternate strips of worked and unworked soil of substantially equal width. Each disc of the rear set is mounted in a strip of soil left unworked by the forward set to complete the working of the top soil. The plow points are located in the furrows of one of the sets of discs (preferably the rear set) to permit some deep plowing. The working depths of the points and discs are independently adjustable. The system is designed for operation at high speed to provide complete coverage of the soil with minimal double working by the discs. It permits deeper penetration by the discs and a controlled amount of deeper plowing by the points while leaving a finished contour which is substantially free of ridges and furrows.

Abstract: An agricultural tillage implement adapted to be pulled by a vehicle comprises a main frame adapted to carry ground working tools. The main frame is supported on wheels rotatably mounted thereto. A sub-frame carrying ground working tools is mounted to the main frame by means of a lift mechanism. The lift mechanism includes a single horizontal rock shaft mounted to the main frame for rotation about its axis. A hydraulic cylinder rotates and holds the rock shaft at determined rotational displacements. Shaft arms affixed to the rock shaft are pivotally connected to the sub-frame. Connecting arms are rotatably connected to the main frame at one end and are rotatably connected to the sub-frame at another end. Rotation of the rock shaft moves the shaft arms, connecting arms, and sub-frame in a four-bar linkage motion to raise and lower the sub-frame while maintaining the sub-frame in a generally horizontal position for all working depths.

Abstract: An implement hitch has a cultivator carrier mounted on a sprayer trailer by a four point linkage actuated by a hydraulic cylinder to raise and lower a standard rigidly connected to the cultivator, there being a quick attach, three point pin-hook coupling between the carrier and the standard.

Abstract: A multi-section agricultural implement comprising a plurality of side-by-side separate sections each comprising a main carriage frame independently supported by ground engaging wheels and an implement supporting sub-frame supported by the main frame, an adjacent sub-frame being connected solely through universal joint connection means, and a towing frame connected to some of the sub-frames and being arranged to be hitched to a towing vehicle.

Abstract: This invention relates to an auger and to a plow including such auger. This specification discloses an auger which is suitable for use even in the difficult terrain encountered in typical reforestation operations. An auger in accordance with this disclosure has its axis extending in the direction of movement of the plow and is arranged to rotate in a direction opposing the forward movement of the plow. The auger has a plurality of generally helical turns. Sections of the ground engaging portions around the periphery of the turns have an angle of attack in a plane at a selected angle to the axis of the auger and other sections have angles of attack in planes at a different angle. These ground engaging sections of the periphery are preferably teeth which because of the difference in angles discussed above attack the ground at different cutting angles.

Abstract: A ground-working implement to be attached to a tractor or other motive power means, to be pulled through and over the ground. It comprises a ripper having several ripping teeth which dig into the ground and are hydraulically adjustable by the operator of the tractor. A scraper is hingedly mounted relative to the ripper to be adjusted hydraulically by the operator from a raised or retracted position to a lowered operating position, there being locking means between the ripper teeth and the scraper comprising a locking bar on the scraper which is caused to fit within a notch or recess in the ripper teeth to lock the scraper into operating position as it is lowered.

Abstract: A vibrating ripper having quadrilateral linkage. The linkage, equipped with a remote hydraulic control therefor for making running adjustments as afforded by a depth actuator cylinder during ripping and possibly, but not necessarily, as afforded by a pitch actuator cylinder which also can be provided, has a raised-carry position and a lowered-rip position in which it has a vibratory rocking action, and defines a pitch axis fixed in the linkage and shifting therewith during depth changes. Strategic upper level placement of an elastic strut connection which is provided, and diagonal placement of the lift or depth cylinder connection to the draft frame or to the ripper beam and shank assembly, locate the pitch axis at the node of the rocking assembly as it vibrates.

Abstract: An agricultural implement having a primary frame on which is mounted an adjustable secondary support frame through connecting links and depth control screws enabling adjustment of the secondary support frame relative to the primary frame while maintaining the secondary support frame in generally parallel relation to the plane of the primary frame. First tools such as disk gangs are carried by the secondary support frame, while different type tools such as shank mounted earth working points and contiguous moldboards are mounted on the primary frame spaced from the first tools. Wheels mounted on the primary frame enable raising of the primary and secondary frames and associated tools for transport, and are adjustable to serve as gauge wheels for the earth working points and moldboards.

Abstract: A press grain drill includes a plurality of opener units mounted on an elongated tow tube and including a plurality of elongated, pivotably coupled elements forming a pair of parallelograms which support a self-penetrating shovel and a press wheel respectively. A first one of the parallelograms permits up and down movement of the shovel relative to the tow tube while maintaining the pitch of the shovel relative to the ground substantially constant. A second one of the parallelograms responds to each movement of the shovel to move the press wheel in the same direction and relative to the shovel so as to maintain the depth of the shovel within the ground substantially constant. Whenever the tow tube which is coupled by pairs of parallel links to an elongated main frame tool bar is raised relative to the tool bar for towing, a lift tube coupled to the links via bracket numbers engages the opener units to lift them relative to the tow tube.

Abstract: Seed drill (FIG. 1) having furrow openers 10 and accompanying press wheels 12 pivotally arranged on frame 1 by mounting means 3. A spring 18 is interposed between the frame and the furrow openers - press wheels. The bias of the spring can be adjusted by operation of the hydraulic cylinder 20, which can also be used to shift the furrow openers - press wheels between working position and the transport position. An adjusting means 14 is interposed between the frame and the furrow openers - press wheels. By operation of the adjusting means the level of a furrow openers relative to the level of the press wheels can be adjusted. The furrow openers - press wheels are arranged in transverse rows and the furrow openers - press wheels of each transverse row are ganged by shafts 22 so that only one of the mounting means in each transverse row need be outfitted with the spring 18 and hydraulic cylinder 20, and the adjusting means 14.

Abstract: A foldable implement construction includes an implement tool carrying center frame pivotally connected to a draft frame and is provided with a pair of transversely extending outrigger tool sections connected on respective opposite sides of the center frame by a single ball and socket-like hinge which provides a single hinge for both horizontal swinging of the outrigger sections from their transversely extending working position to a longitudinally extending transport position, and further provides for radial pivotal movement of the outrigger sections in their working position to allow the latter to cant and rise and fall in accordance with uneven terrain.

Abstract: A seed drill (FIG. 1 ) having a frame (1 ) with knife hoes (7 ) mounted thereon. The knife hoes are movable in a vertical plane and each has two laterally projecting wings (8 ) bent downwardly toward one another; the outer edges of the wings merge forwardly together to form a point. Each knife hoe has an upright strut (13 ) supporting the leading point of the knife. Further, each knife hoe is disposed on a shank (9 ) which is mounted on the frame with parallel guide means (10 ). The parallel guide means has at least one articulation (19 ) acting in a vertical plane, a stop (21 ) limiting forward swinging movement of the knife hoe about the articulation, and at least one resilient element (22 ) exerting a force on the knife hoe in the direction of the stop. The drill further includes a gauge wheel (16 ) for each knife hoe to limit the depth of penetration of the knife hoe into the soil.

Abstract: A ground-engaging implement assembly for installation on a vehicle includes a U-shaped frame having a bight portion extending around one end of the vehicle and a pair of spaced leg portions extending along and connected to the respective sides of the vehicle. Each of the leg portions of the frame has a mounting face thereon and an implement such as a ripper mechanism is connected to each mounting face for penetrating material at the opposite sides of the vehicle.

Abstract: A light soil tillage implement is adapted to be drawn by a farm tractor, and is designed to perform a light tillage immediately preceeding fertilizing, planting, and/or other farming operations. The implement comprises a frame having support wheels thereon engaging the ground, one or more tool bars having ground working tools thereon, and a mounting mechanism for each tool bar connecting each tool bar with the frame. Each mounting mechanism comprises a series of linkage elements which resiliently bias the working tools downwardly into the soil when the implement is in a tilling position. The mounting mechanism is adapted to positively lift the tools and tool bars out of engagement with the ground when it is desired to transport the implement, and further individually mounts each tool bar in a manner which allows the same to laterally rotate about a central point thereon in order to follow the contour of the soil independent from the other tool bars.

Abstract: A plurality of ground working sections such as cultivator sections, are flexibly connected together and operatively connected to a hitch pole assembly. Each section is supported upon a pair of castor wheels mounted on a fore and aft beam pivotally connected to the front and rear of the frame members. The sweeps or cultivators move in an arc via hydraulic or mechanically operated rock shafts and the depth control is by means of controlling the pivotal movement of the fore and aft beams. This also permits the penetration angle of the sweep or cultivator to be preset and maintained. For transport, the draw pole is raised and the implement is towed by one end thereof with the castor wheels automatically aligning with the direction of travel thus eliminating folding or raising of sections and permitting practically any length of cultivator or ground working implements to be assembled.

Abstract: The invention is a better road planing vehicle having an improved suspension system for supporting the rotary cutting unit under the vehicle chassis. The suspension includes a pair of lift and tilt cylinders connected in parallel spaced relation at one end to the vehicle frame and at the other end to the top of the cutter housing. Three parallel and triangularly arranged drawbars are connected at one end to the cutter housing and extend either fore or aft to connect at their other ends with the vehicle frame. A sideshift cylinder is connected between the frame and one of the drawbars. In the preferred embodiment the connections of the lift cylinders and the drawbars are ball joints.

Abstract: A towable seed drilling unit of the kind having a hopper-fed seed chamber whose base is constituted by a proportion of the lower run of an endless belt driven by a belt drive roller in a direction contrary to towing direction from a ground-contacting wheel and having regularly spaced holes therein for the containment of single seeds, a seed-repelling roller for agitating seed in the said chamber and a masking plate below the belt permitting release of seeds on a passage of holes therebeyond into a furrow formed ahead of temporarily unmasked holes by a coulter beneath the seed chamber and closed by a furrow closing member, wherein forward and rearward wheels supporting the unit are carried by arms pivotal about substantially horizontal axes and means are provided for adjusting the attitude of the arms relative to the remainder of the unit and thus the penetration depth of the coulter, and wherein a parallel linkage is provided by means of which the unit can be attached to a towing vehicle, said linkage being r

Abstract: A folding tool carrier to be attached to a tractor and to carry an array of cultivating tools or implements. The carrier includes three bars forming a central section and a wing section at each side of the central section. Each wing section is connected to the central section by inner and outer swing arms to function as a parallelogram when the wings are lifted and retracted above the central section. The central section, the wings and the arms, are placed in a common vertical transverse plane to provide for a compact unit which may be carried immediately behind a tractor.To accomplish this, the inner arms are above and the outer arms are below the central and wing sections when the wing sections are extended. A comparatively short crown bar is mounted upon and above the central section and an inner swing arm is pivotally attached to each end of this crown bar to pivotally connect with the inner end of the adjacent wing section.