Abstract: A sprinkler and valve operator is disclosed that enables a single rotatable sprinkler head to be mounted coaxially to an upright irrigation pipe valve. The operator is comprised of two independently coaxially rotatable pipe sections that include a central valve operating mechanism. The lower pipe section includes mechanisms for releasably attaching the operator to a standard upright irrigation pipe valve. The valve operating mechanism engages and rotates the irrigation pipe valve actuator in response to rotational movement of the upper pipe section. A removable tripod may be provided to brace the pipe sections against operating forces produced through rotatable sprinkling head attached to the upper pipe section.

Abstract: A rollover mechanism for pivoting the plow frame of a two-way gang plow between alternate operative field positions angularly spaced 180 degrees apart relative to a center axis on a supporting three point hitch framework. The plow frame is further positionable in an upright attitude for travel purposes. Movement of the plow frame relative to a supporting wheeled carrier or three point hitch framework is accomplished through a crank arm connected to a plow frame pivot shaft. An elongated lever arm is pivotally connected both to the crank arm and to an extendable hydraulic cylinder assembly mounted to the supporting three point hitch framework. An intermediate link is pivotally connected to the three point hitch framework and is also pivotally connected to the elongated lever arm. Straight line movement of the hydraulic cylinder assembly is thereby converted to angular movement of the pivot shaft.

Abstract: A drawbar assembly for transporting three point hitch implements in an elevated or lowered condition by a single point connector towing vehicle. The assembly is wheel supported and mountable between the connector of a towing vehicle and the three point connectors of a three point hitch trailing unit such as a plow or other farm implement. The three point connectors are movably mounted relative to a central supporting framework. A jack assembly and appropriate linkage interconnect the three point connectors with the framework to enable movement of the three point connectors and attached implement between an elevated carrying position and a lowered operating position. The jack assembly is operated through provision of conventional accessory drive units provided on the towing vehicle. A tongue load relieving mechanism is also provided, operatively connecting the implement and tractor to reduce the load normally transferred to the hitch members through the tongue of the drawbar assembly.

Abstract: A drawbar assembly for transporting three point hitch implements in an elevated or lowered condition by a single point connector towing vehicle. The assembly is wheel supported and mountable between the single point connector of a towing vehicle and the three point connectors of a three point hitch trailing unit such as a plow or other farm implement. The three point connectors are movably mounted relative to a central supporting framework. A jack assembly and appropriate linkage interconnect the three point connectors with the framework to enable movement of the three point connectors and attached implement between an elevated carrying position and a lowered operating position. The jack assembly is operated through provision of conventional accessory drive units provided on the towing vehicle.