Abstract: A tractor-drawn levee plow having a telescoping frame pivotally supporting a pair of harrow-gangs arranged to move soil laterally toward each other to a center-line to form the levee, the frame also pivotally supporting a pair of hydraulic cylinders powered by the tractor and connected in fluid-power series, one each of which is pivotally connected to the outer end portion of one of the gangs and each of which is utilized in practicing a new method involving forcibly holding the outer portion of its gang in elevated and/or depressed relation to its inner end portion while in ground-engaging position to thereby most effectively and efficiently construct a levee.

Abstract: A self-propelled disk harrow apparatus having four gangs of disc members attached thereto which are rotated to propel the disk harrow and to thereby till the soil. Wheels are provided for allowing the disk harrow to travel on public roads and to aid in propelling the disk harrow. When the disc members extend too far into the soil or otherwise become ineffective in propelling the disk harrow, for example when in wet or sandy soil, the weight of the disk harrow transfers to the wheels and the wheels tend to primarily propel the disk harrow. A hydraulicly controlled pitch control is provided for controlling how deeply the discs extend into the ground. An automatic coupling structure is also provided for allowing each gang of discs to be folded for extending the effective length thereof and still providing power to all of the discs on each gang.

Abstract: A disk harrow embodies a fore-and-aft extending center pole which hitches at one end to a tractor and has paired tool gang assembly units which extend laterally from opposite sides thereof. These units include tool gang carrying inner beams which are supported on transport wheels and are connected to said pole for horizontal adjustment about pivots spaced along the longitudinal axis of the pole, one behind the other. Adjustable length truss bars connected between the pole and the inner beams releasably lock said tool gang assembly units in a transport position generally perpendicular to the pole. The tool gang assembly units also include a tool gang carrying outer beam which is hinged to the inner beam to fold vertically thereover onto the pole when the units are perpendicular thereto. The spacing of the pivots provides sufficient clearance that the folded outer beams lie flat with their tools in close side-by-side relation on the pole for transport.

Abstract: The tillage implement has tool beam assemblies that project laterally outwardly in opposite directions from the central fore-and-aft axis of the implement, and the inboard ends of the assemblies are overlapped transversely with respect to the path of travel of the implement while also being offset in a fore-and-aft direction so that the soil worked by the inboard end of the leading tool assembly is reworked by the inboard end of the trailing tool assembly to eliminate the formation of a furrow or ridge at the point of convergence of the tool assemblies. Notwithstanding the overlap and offset, the assemblies may be swung back into folded positions for transport in which the assemblies are substantially parallel to one another in order to reduce the overall roading width of the implement.

Abstract: Two tool-carrying beams extending laterally in opposite directions from the tongue of the frame may be swung fore-and-aft between lateral working positions and folded back transport positions. A collapsible link between the tongue and each beam, respectively, may be held partially collapsed against the tongue to maintain its beam in the operating position, or the link may be released for partial extension to permit the beam to swing back into its transport position. Although the innermost tools of the two beams are disposed in close proximity of one another when the beams are in their widespread working positions, the vertical pivots for the beams are so disposed that the beams can swing through arcs exceeding ninety degrees without causing said innermost tools to strike one another.

Abstract: A folding implement has a pair of oppositely, laterally projecting tool beams which pivot about vertical axes between wide-spread, working positions and fold-back, transport positions in which the beams are substantially parallel to the path of travel of the implement. A secondary tool assembly situated behind the primary tool beams can swing about a transverse horizontal axis between a fully raised position for transport and a fully lowered position for working the ground. Push rod structure interconnects the secondary assembly with the primary beams so that as the primary beams are swung back to their transport positions, the secondary assembly is raised to its upper position, and conversely, as the primary beams are swung forwardly into their working positions, the secondary assembly is lowered into its ground-engaging position.

Abstract: A self propelled disk harrow having four gangs of disc members attached thereto which are rotated to propel the disk harrow and to thereby till the soil. Wheels are provided for allowing the disk harrow to travel on public roads and to aid in propelling the disk harrow. When the disc members extend too far into the soil or otherwise become ineffective in propelling the disk harrow, such as because of wet or sandy soil, the weight of the disk harrow transfers to the wheels and the wheels tend to primarily propel the disk harrow.