Abstract: The invention relates to a crane truck with a drivable undercarriage and a superstructure supported on the undercarriage to be rotatable by means of a slewing rim, the superstructure having a counterweight, which is movable by an elevating mechanism consisting of two piston-cylinder drives between an elevated operation position and a driving position when it rests lowered onto a support on the undercarriage. The piston rods of the piston-cylinder drives are drivable to rotate between a locking and unlocking position referred to the counterweight. The desired positions of the piston rods in their positions of crane operation and release as well as their locking and unlocking position are displayable by means of proximity switches on the piston-cylinder drives, so as to eliminate operation errors and disturbances in the hydraulic system of the piston-cylinder drives by way of various control units.

Abstract: A method for preventing digestive disturbances in herbivores entails supplementing their feed with adequate amounts of pancreatin which has preferably been given a neutral taste.

Abstract: This invention provides a self-propelled hop picking machine including a hop bine draw-through device which, as the machine moves forward, pulls bines in the path of movement of the machine rearwardly, preferably at a speed greater than the forward speed of travel of the machine, so as to pull such bines from their supporting wires and to convey the bines to picking elements for removal of the hop cones from the bines.