Abstract: A tongue for connecting a pull type implement to a towing vehicle is provided with a front end portion adapted to be detachably connected to the rear portion of a towing vehicle and a rear portion adapted to be pivotally connected to a lower front portion of the implement for movement about a substantially horizontal lateral axis, with an abutment fixedly supported by the frame and being positioned above the rear end portion of the frame, the abutment being adapted to abuttingly engage a corresponding upper front portion of the implement for limiting pivotal upward movement of the tongue relative to the implement and for permitting the abutment to swing forwardly away from the upper front portion of the implement to accommodate pivotal movement of the tongue relative to the implement incidental to downward movement of the towing vehicle relative to the implement and to unhitching of the implement.

Abstract: In apparatus for mounting agricultural implements to be propelled over the ground by a tractor or the like, a laterally extending tool bar arrangement is provided in which a tool bar mounting at least one implement is supported to extend substantially horizontally and to be movable to and from a lowered laterally extended position and a raised laterally retracted position while the tool bar is maintained substantially horizontal.

Abstract: A foundry apparatus and a method of operating a foundry in which molding material is prepared by mixing sand and water in a muller, formed into molds for sand casting of metals, and later recycled. In accordance with the present invention, fine particles of molding material are removed as a wet waste, which is subsequently delivered to the muller for mixing with sand and water in preparing molding material.