Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 731
ference four projecting pieces called the beaters,their purpose being to beat or thresh the grain from the straw as this passes forward between the feed-rollers R, at the bottom of the feed-table F, upon which the unthreshen material is spread out in a layerprevious to its being introduced between… … On passing the beater-drum D, the straw is taken up by the twq sets of shakers S S in succession.The shakers are driven likewise from the shaft B by a pulley marked 7, and a pitch-chain which passesover a pulley marked 5, on the shaft of the first set of shakers. The second set of shakers is…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.