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Abstract

A method for fractionating milling of cereals between two milling disks having annular working surfaces facing each other and composed of serrated segments, such that the desired fraction, for instance bakery flour, can be recovered by sifting even after a single passage of the milling material between the milling disks. The invention is characterized in that the serrate pattern of said segments comprises a plurality of straight, parallel ridges acting as cutting teeth alternating with parallel grooves and being so designed that the cutting teeth of each segment have a constant height and width and make such an angle with respect to the line of symmetry of the segment that the cutting teeth of each milling disk will intersect the lines of symmetry of each segment of the other milling disk at an angle of .+-..alpha..sub.1 for one milling disk and .+-..alpha..sub.2 for the other milling disk, such that the first cutting tooth of each segment of one milling disk will intersect the cutting teeth of the other milling disk at angles of intersection K which vary according to the relationship K=(.alpha..sub.1 +.alpha..sub.2).+-.x.degree. where .alpha..sub.1, .alpha..sub.2 is said angle between one cutting tooth of each segment in relation to said line of symmetry R.sub.x, and x is the sectoral arc angle of the segment.

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First Claim