Abstract: There is disclosed a farm implement having a frame connectible to a tractor by means of a three-point hitch to permit it to be moved forwardly over the ground level, a first set of chisels supported on the frame in laterally spaced-apart relation, a second set of chisels supported on the frame rearwardly of the first set and laterally intermediate laterally adjacent chisels of the first set, and a lister mounted on each chisel of the second set with its lower edge above the lower edge of the chisel of the second set. In use of the implement, the first set of chisels form longitudinally extending trenches in the ground, and the listers mounted on the chisels of the second set turn the soil toward the trenches in order to build beds thereover.

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: In a timing circuit for controlling the time of operation of the electric motor of a game feeder, first and second semiconductor switching devices are connected so that the control electrode of the first is connected to a power source but will not conduct until the second semiconductor switching device is conductive. The first switching device when conducting actuates motor control means to run the motor. The second switching device is in its conductive state for a period of time controlled by an RC timing circuit.