Abstract: The invention relates to a lever system for force transmission for a grinding roller. A more cost-efficient, simplified lever system is to be created which no longer requires the integration into a mill stand but is more easily accessible for installation and maintenance works. For this purpose, provision is made in particular in that on the central rocking lever of the grinding roller an eccentrically arranged side lever is provided which has a lever arm extending in the opposite direction to the grinding roller and in that the force transmission onto rocking lever and grinding roller takes place via a lever arm of the side lever and a piston rod of the hydraulic cylinder.

Abstract: The invention relates to a grinding roller having an inclined, fixed inner roller axle (3), a roller jacket (6) being provided on a roller base body (7). The rotatable roller base body (7) is mounted relatively to the fixed inner roller axle (3) by means of an arranged fixed bearing (11) and a floating bearing (12) which is spaced apart therefrom. The floating bearing (12) is provided in the region of the end face of the roller axle (3) and for supporting the roller base body (7) having the roller jacket (6) so as to allow their rotation, and the fixed bearing (11) is arranged on the roller axle (3) in an outwardly offset manner in the direction of the swing lever (14).

Abstract: The invention relates to a roller mill having a modular construction. In order to permit an increased rated grinding capacity with a limited roller/rocking lever mass and a larger number of rollers, the standards are displaced outwards and the rocking lever axes, relative to the displaced standards, are positioned eccentrically and radially inwards between the grinding table and standards.

Abstract: The invention relates to a roller mill having a modular construction. In order to permit an increased rated grinding capacity with a limited roller/rocking lever mass and a larger number of rollers, the standards are displaced outwards and the rocking lever axes, relative to the displaced standards, are positioned eccentrically and radially inwards between the grinding table and standards.

Abstract: To reduce the manufacturing costs of air-swept roller mills and comparable mills and for optimizing the grinding and classifying processes via the flow direction of the fluid-grinding material mixture, according to the invention a blade ring is provided, which has pivotable guide blades. The blade ring is constructed as a polygon blade ring in segment form with at least one outer jacket ring or outer ring, which is constructed in segmented, polygonal manner and comprises a plurality of outer polygon segments formed from planar sheet metal blanks. One or more pivotable guide blades can be arranged with an upper, lower or central pivot axis on the polygon segments and can be pivoted and locked with no or few stages.

Abstract: To reduce the manufacturing costs of air-swept roller mills and comparable mills, according to the invention a segmented polygonal blade ring is provided, which is manufactured from a plurality of polygon segments, which have planar surfaces and are preferably cut to size from metal sheets. To individual polygon segments can in each case be fixed with a predeterminable inclination one or more guide blades. Preferably an outer polygon segment an an inner polygon segment with at least one guide blade form a polygon segment. Polygon segments can be linked to polygon runs and the latter to polygon blade rings with different diameters.

Abstract: A piston for an internal combustion engine with a separate head and skirt which are joined by the piston pin. At least one of the upper lands has a reduced diametrical clearance with the cylinder wall in an area perpendicular to the pin direction. The bottom land has a reduced diametrical clearance with the cylinder wall in the pin direction. The lands are oval shaped, the bottom land optionally a truncated oval. At least one of the upper lands can have the shape of two ovals offset by 90.degree. like a cloverleaf.

Abstract: In a piston whose rod 2 is connected in a hinged manner to the upper part of the piston through the piston axis and whose upper part, inside an annular support 5 in the central region of the base of the piston, is to be cooled by the cooling oil injected from the crankshaft chamber, the problem which arises is to introduce the cooling oil into this region without touching the annular support 5. In order to resolve this problem, a deflecting surface for the cooling oil in the shape of a channel section 11 is arranged at the upper end of the rod 2. This channel section 11 guides the injected cooling oil through a radial orifice 10 in the wall of the annular support 5 inside the central cooling chamber 9 below the base 4 of the piston. To improve the cooling effect of the cooling oil in the inner central chamber 9, the latter may be isolated from the crankshaft chamber by a cover 12.