Patent for a new and improved cultivator. This design consists in "the wheeled frame, the two laterally and vertically movable drag-bars jointed thereto, and each provided with shovels, the horizontal rotary-shaft lying between the drag-bars and provided with a blade arranged to revolve between the shovels of the respective beams, the transverse shaft mounted on the frame and connected by driving devices with the ground-wheel, and the intermediate shaft connected to the [other] shafts . . . by universal joints" (lines 17-27).