Patent ID: 7997967

Claim:
A grain cleaning sieve in a cleaning system of an agricultural combine, comprising: a plurality of louvers, each louver including a shaft carrying a plurality of fingers extending sidewardly therefrom at spaced apart locations therealong, and each of the shafts having at least one mounting portion of a predetermined sectional extent for supporting an adjacent region of the louver; and a frame bounding a grain flow region, the frame including at least one elongate support element including laterally spaced apart longitudinally extending first and second edges, and a plurality of laterally extending arrays of slots at longitudinally spaced locations along the element, each of the arrays of slots including an entry slot disposed along the first edge of the element, a plurality of adjusting slots spaced longitudinally apart and extending toward the second edge, and a plurality of connecting slots extending between and connecting the entry slot and the adjusting slots of the array, each of the slots having a width marginally larger than the mounting portions of the shafts, such that the mounting portions of the shafts are receivable in any of the adjusting slots for positioning the louvers in spaced apart relation in the grain flow region.