Soil cultivation implement

Claim 1

A soil cultivation implement comprising a frame comprising means adapting the implement to be coupled to a prime mover and including means adapted to be coupled to a source of rotary power for driving a rotor and having disposed thereon, one behind the other in the direction of travel, rotary cutters for cutting up the ground vertically, plowshare-like cutters disposed side by side for dividing the ground horizontally, a horizontal rotor having prongs and serving as a clod-breaking roller, and being adapted to be rotationally driven and a freely rotating clod packing roller for firming the ground without substantially compacting the soil; said plowshare-like cutters having cutting edges which are disposed at an acute angle with respect to one another and symmetrically with respect to the longitudinal axis and having at their front end in the working direction an angle of inclination in relation to the horizontal of about 10° to 30°; said rotor having a rotor shaft on which there are disposed in a helical manner wedge-shaped, substantially linear prongs in at least three rows spaced uniformly around the circumference of the rotor shaft, said prongs being rigidly fastened substantially tangentially on said rotor shaft and being located each on the leg of the tangent leading with respect to the direction of rotation of the rotor shaft at an angle of about 50 ° to 80° in relation to radii associated with their fastening points, the length of each prong being substantially in the proportion of about 2:1 as compared to the diameter of the rotor shaft and said prongs being pointed at their outer ends and said linear prong comprising a camfered digging end curved in a shovel-like manner in the direction of rotation; and said clod packing roller being provided on its surface with rounded teeth helically offset in relation to one another and aligned in rows around and helically across said roller for firming the surface of the soil.