GB625658A - Improvements in or relating to milling of cereal grain - Google Patents

Abstract

625,658. Treating grain. CARTER. R. J. S. Nov. 22, 1945, No. 31505. [Class 58] [Also in Group XXVI] In a process of milling wheat or rye grain the cleaned and conditioned grain berries before grinding which may be first . lightly cracked are subjected to an impacting action as by being flung centrifugally at high velocity against an impacting surface to break away the germ in substantially whole form without it being ground to any appreciable extent and thereafter removing the fines (such as pass through a 32 mesh screen) and the largest particles (such as are retained on an 18 mesh screen), and subjecting the said largest particles to preliminary grinding and separating germ contained therein from such ground particles, crushing such separated germ and the remainder of the impacted grain containing the majority of the germ, to flatten the germ while breaking up remaining endosperm to a greater extent, and sifting the flattened germ from the crushed portions of the berries which may be flaked and then sifted. The impacting may be done in an impacter comprising a hollow casing 11 in which a circular disc 14 attached to a driving shaft 9 has attached to it an annular disc 16 and between the discs a series of vanes 17 by means of nutted bolts 18. The disc 16 has a conical flaring mouth 16a into which the grain is fed by chute 22 and is flung centrifugally by the revolving discs and vanes, against transverse corrugations on the face of an impactor ring 19 secured in concentric relation with respect to the discs and is then discharged at 12.