Abstract: A system for adjusting the alignment of ground engaging tools of an agricultural implement may include a first toolbar configured to support a first plurality of tools aligned along a first tool axis, and a second toolbar configured to support a second plurality of tools aligned along a second tool axis. The second toolbar may be movable relative to the first toolbar between a first toolbar position and a second toolbar position such that the second tool axis is movable relative to the first tool axis. The system may additionally include an actuator configured to actuate the second toolbar between the first toolbar position, where the first and second tool axes are substantially coincident, and the second toolbar position, where the second tool axis is substantially spaced apart from the first tool axis.

Abstract: An agricultural implement includes a plurality of ground-engaging tools configured to modify a surface configuration of an agricultural field and a hydraulically-controlled subsystem configured to modify an operating angle of the plurality of ground-engaging tools. The agricultural implement also includes a sensor coupled to the hydraulically-controlled subsystem configured to generate sensor signals indicative of a current operating angle of the plurality of ground-engaging tools. The agricultural implement also includes an implement control system configured to receive the sensor signals from the sensor to determine the current operating angle of the plurality of ground-engaging tools, and, upon determining the current operating angle is to be changed to a new operating angle, generate control signals for the hydraulically-controlled subsystem to modify the operating angle of the plurality of ground-engaging tools from the current operating angle to the new operating angle.

Abstract: An agricultural machine has a symmetrical chassis hydraulically transformable between a folded transport configuration and two unfolded configurations, using articulated beams. An air seeder example has a primary beam linking a tractor to a hopper-carrying trailer, also locating the chassis. Machinery such as seed openers is held in frames pivoted from the tertiary beams. In all configurations except completely folded, lateral chains that are maintained tight with a hydraulically powered tensioning system having sideways compliance maintain the tertiary beams and frame-supported machinery in a symmetrical configuration to each side of the primary beam, when working.

Abstract: A marker assembly mountable to an agricultural implement includes a set of interconnected frame sections that can be pivoted with respect to one another to retract the marker assembly for transport and/or storage. The marker assembly has a support wheel that supports the marker assembly above the ground as the marker assembly is being deployed and when in an extended working position. The point at which the support wheel engages the ground is controlled by a rigid link and cam assembly. The rigid link has a first end connected to a first frame section and a second end connected to a lever arm that is connected to a link of a second frame section. The rigid link is operative to pull down on the lever arm when the marker assembly is being deployed so as to force the second frame section away from the first frame section. The amount the second frame section pulls away from the first frame section is determined by the cam assembly.

Abstract: A tractor-pulled grubber including a frame for movement over the ground. The frame includes: a blade carrying assembly, a trailer hitch assembly secured to the front of the blade carrying assembly, and a lifting assembly pivotally secured to the rear of the blade carrying assembly. The lifting assembly has a pair of forward legs that are pivotally secured to the rear of the blade carrying assembly and extend downwardly therefrom. The lifting assembly also includes a pair of rearward legs, each of which is affixed to a respective one of the forward legs and extends downwardly and rearwardly therefrom. A tie bar rigidly connects the rearward legs together. A pair of forward wheels is rotatably secured to the forward legs. A pair of rearward wheels is rotatably secured to the rearward legs. An earth penetrating blade assembly is suspended from the blade carrying assembly for plowing the ground.

Abstract: An agricultural apparatus comprises a main frame with ground wheels supporting the frame for movement across the ground and a plurality of ground engaging openers mounted on the frame for engaging the ground. Each opener includes a depth control wheel mounted on the opener frame member for movement in a direction for varying the height of the depth control wheel on the opener frame member to vary the depth of the opener element in the ground. A common adjustment apparatus for all the depth control wheels comprises an actuator, a common drive linkage mounted on the main frame and driven by the actuator and a plurality of individual adjustment members. A cam plate operable by the adjustment member. The depth control wheel is mounted on an arm on which is pivotally mounted on the opener frame member on a first pivot pin, the arm including a portion thereof for engaging the cam plate.

Abstract: This invention is directed to a novel zero-till seed drill which has a shortened wheel base and can thus closely follow the contours of a field which is being seeded, is capable of being raised and lowered at the beginning and end of each pass on the field, and has adjustable level and packer wheel weight capability. The invention is directed to a zero-till drill apparatus which is adapted for optionally carrying a Coulter disk, at least one seed drill, and a holder for carrying seeds, the apparatus being mounted on transport wheels. The apparatus includes means for raising at least one of the transport wheels off the ground while the Coulter disk and/or drill are on the ground in position for dispensing seeds into the ground, and lowering the transport wheel onto the ground when the Coulter disk and/or drill are raised off the ground.

Abstract: A drag attachment for a disk or cultivating implement which includes a linkage system mounted in cooperation with a fluid cylinder apparatus for raising and lowering the disk transport wheels, which linkage system includes a pair of drive arms connected to the rotatably-mounted wheel shaft carrying the transport wheels, a pair of double pivoted links connecting each drive arm to a separate, adjustable connecting rod, which connecting rod is in turn pivotally attached to a pivot arm rotatably mounted on the frame of the disk. A pair of rearwardly and downwardly extending frame arms mounted on the pivot arm and spaced by an arm brace serve to support a drag pipe, harrow or other cultivating implement in a desired attitude. The drag attachment can be manipulated to raise or lower the drag pipe, harrow or other cultivating implement by operation of the conventional fluid cylinder apparatus provided on the disk.

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 twin row seedling planter is provided with a new mechanical system for ejecting seedlings into a cut in the ground made by a dibble after the dibble has cut to a selected depth. The planter also features an improved modular lay-out of planting beams, packing beams and wheel support beams. The operators' station is located for ease of access to the planting dibbles. A simple and efficient system is used to raise and lower the packing beams and the planter frame in sequence.

Abstract: A tool bar control mechanism for an agricultural implement or the like having a frame, a pair of generally transverse tool bars mounted on the frame for rotation about their longitudinal axes and carrying ground working tools such as spring teeth for movement therewith, and transport wheels mounted on the frame and movable between lowered transport positions wherein the frame and ground working tools are raised for transport and raised positions wherein the frame and tools are lowered for ground working operation, the tool bar control mechanism including linkage means operatively interconnecting the transport wheels with the tool bars so as to effect predetermined rotation of the tool bars and ground working tools in response to movement of the transport wheels between their lowered and raised positions and positively maintain the tools in set position during ground working operation.

Abstract: A farm implement has a mobile frame from which is suspended a number of chisel plow shanks and a row of rolling coulters ahead of the plows for cutting crop residue to prevent trash buildup and plugging at the plows. A transverse rock shaft on the frame is provided with swingable wheel arms and cranks to which hydraulic piston and cylinder assemblies are connected for raising and lowering the frame, and therefore, the plows and the coulters in unison. The coulters are swingably mounted on the frame for up and down movement relative to the frame as well as fore and aft movement toward and away from the plows. Turnbuckles pivotally interconnecting the coulter supports and the wheel arms impart swinging movement to the coulters during up and down movement of the frame. Accordingly, adequate slicing heights for the cutters are automatically maintained even at shallow plowing depths.

Abstract: Apparatus is disclosed wherein a plow is mounted on a frame so as to form a ditch in the ground as the frame is towed behind a tractor. The frame is of such construction and so attached to a three point hitch that its rear end cannot be lifted without first fixing the angular relation of its pivotally connected parts. A means is provided for fixing this relation independently of manipulation of the three point hitch.

Abstract: The application discloses a multi-row plow adapted to be towed behind a small walking tractor. The plow comprises a draft frame having a pivotal attachment to the tractor and a tool frame. At the rear of the tool frame there is a ground engaging wheel. Apparatus is provided to change the elevation of the wheel relative to the draft frame, thereby to adjust the elevation of the rear end of the draft frame. Linkage causes the forward end of the tool frame to be raised when the rear end of the draft frame is raised, and vice versa. The foregoing provides a simple and labor-saving way of removing the tool from the ground at the end of the row for turning the apparatus around.

Abstract: Hydraulic mechanism for varying the angular relationship between a pair of adjacent end-connected disc harrow gangs which uses the same power source that ordinarily is employed for raising and lowering the harrow frame structure as a power source to actuate the gang angling mechanism. A bell crank lever mechanism embodying a pivot shaft, trailing wheel axle arms, and a crank arm, has the latter arm connected to the power source so that when the crank arm is swung in opposite fore and aft directions, the frame structure is raised or lowered.

Abstract: An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends thereof to the main frame for pivotal movement about a first transverse axis, ground engaging wheels mounted on the support arm, a lift arm operatively connected to each of the support arms for pivotal movement about a second transverse axis, a second earthworking implement mounted on the lift arms, chains interconnecting each of the lift arms and the main frame, a ground engaging wheel mounted on one of the frames and hydraulic cylinders operatively interconnecting each of the support arms and the main frame for angularly displacing the support arms relative to the main frame whereby upon actuation of the hydraulic cylinders when the ground engaging wheel is not in engagement with the ground, the working implements will be caused to move into and out of eng

Abstract: Disclosed is an automatic coupling mechanism for snow-plows and the like, provided by a first frame means which is attachable to a propelling vehicle for cooperating with a frame structure of a snow-plow for moving the plow along the road. A second frame means is provided for lockably connecting with the first frame means. Guide means are provided for guiding the first frame means into lockable relative position with the second frame means. Securing means carried by one of the frame means are provided for locking the first and second frame means together when in a lockable position such that as to prevent relative horizontal and vertical motion between the first and second frame means when locked together. Pivotal support means are provided at both the second frame means and the plow frame structure for supporting the plow, allowing free relative vertical movement of the plow with respect to the first and second frame means and controlling orientation of the plow relative to the second frame means.

Abstract: A lift device is mounted on a wheeled implement such as a disc harrow which has retractable wheels for transport. The lift device includes a pair of arms mounted on a horizontal pivot bar which is rotated by activation of the mechanism for lowering the wheels of the disc harrow. The arms hold a drawbar for a drag harrow when the drag harrow is to be transported and allow the drag harrow to hang vertically behind the disc harrow. In the suspended position, pivots in the arms allow the drag harrow considerable lateral freedom. When the arms are lowered, the drag harrow is released from the arms and dragged by pull lines. Hinges in the arms permit the arms to be folded up onto the disc harrow.

Abstract: The plow device is adjustable so that it can be pulled and operated by a powered tractor utilizing reciprocating lowering and lifting rods actuated by a 3 hitch hydraulic piston and piston rod attached to 3 respective hooks one hook pivotally connected to vertical posts and two oppositely disposed hooks connected to the opposed front ends of the frame of said plow device. The plow device has a pivotally connected shank connected by a pivot pin therethrough which also extends through horizontal side frame beams. The shank carries a plow blade point at its lower end which cuts levees, furrows or cultivates the ground with suitable kind of cultivating attachment.