Abstract: The invention relates to a shredding machine, more particularly for shredding fibrous, lignin-containing or analogous materials. It comprises an endless belt carrying grinding tools such as gouges and forming an upper lap onto which the material to be defibred is delivered. The front portion of said belt rotates about a countershaft. The shredding machine, moreover, comprises a fixed end stop member located above the countershaft, while the lower profile of said stop member is adapted to the passage of the gouges. Means are also provided which cooperate with the said stop member to prevent the passage of thick fragments of the material to be defibred. The invention can in particular be applied to the grinding or defibring of pieces of wood, logs, branches, planks and similar lignin-containing materials.

Abstract: This invention is concerning a machine for rock removal and soil cultivation of newly broken or established farming areas. The machine picks up soil and rocks to a significant depth, and by a mixing and grinding process, breaks up sod, roots, and lumps of soil and by a classification process returns the size reduced material and small rocks to the ground, and retains the larger rocks.