Fuente: WIPO "rice" 16,940. McKesson, C. L., and Rice, B. F. July 20. Separating by shaking-apparatus. - Material such as seeds, grain, fruits, vegetables, coal, ores, salt, &c. is sorted according to size or volume by means of an inclined table F, Fig. 12, which receives a combined longitudinal and vertical reciprocating motion through suitable mechanism, the surface being formed with transverse deflectors f of a progressively inc r e a s i n g inclination, whereby the material or mixture is sorted into grades of gradually decreasing size and delivered at the lower edge into channels S. To facilitate this action, the deflectors are formed with transverse corrugations G whereby the material is stratified during the upward movement of the table. As shown in Fig. 12, the deflectors are arranged to form four separate tables with feed distributors i, i. The apparatus is reciprocated by a rod d connected through a rod d, Figs. 11 and 12, to a rotating crank-shaft d carried by a frame d. The rotation of the shaft d reciprocates the frame d' through the toggle-links d. The sorting-table is supported by links B which give a rising and falling motion to the table as it is reciprocated. In a further modification, one set of tables is superposed above another set in the same apparatus. Fig. 7 shows an enlarged view of the deflecting-surfaces f. The corrugations G retard the movement of the particles down the inclined deflectors until the inclination is sufficiently steep to prevent further progress in a longitudinal direction. In this arrangement, it is stated that if the line y-y represents the mean level of the material held in the pocket between the adjacent corrugations 2, 4, the part 7-2-8 of the lower corrugation effects a separation, all particles as large or larger than say x passing over the lower part of the corrugations between the points 1-7, while the smaller particles y. z pass into the adjacent pocket of the succeeding deflector.1>11>11>4>2>5>2>6>12>