Sprocket-type pulverizer for use at rear of plowing tool to prepare field for cultivation, has eart

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A clod-breaking roller (1) in particular for mateable to the rear of a soil working tool, such as a working tool is the subject matter of, or an agricultural vehicle traction, such as a tractor, comprising at least : -two bearing axles (11) parallel to each other and to the ground and extending substantially perpendicular to a general direction of movement (F) of said roll (1) when the latter is towed during use, -a set of broken lumps means (20) spaced rotary mounted respectively on each of said pins (11) and extending perpendicularly thereto, said means broken lumps (20) being adapted to rotate with said axes (11) for breaking up clods of earth on their passage, and-means for scraping earth (30) arranged between two broken plug means (20) adjacent, characterized in that the scraping means ground (30), as well as the broken plug means (20), are arranged in a staggered configuration of a supporting axle (11) to each other.