seed

Hi good people - does anyone have knowledge of old seed cleaners? This gem is a prototype we are playing around with to build a modern version - J. Bean, 1851, Montville (Maine maybe?). Basic online search yielded no info. There are instructions still in tact on which sieve to use for the particular type of seed cleaned, and how much to open or close the damper... but much of the frames and screens have been replaced and reworked, thus losing the corresponding numbers.