Oh the Suspension Threshing by Double Cylinders

Abstract

In order to improve the threshing performance of Head Feeding Thresher, an apparatus for the laboratory experiment was reconstructed from two Manually Feeding Threshers and some tests were carried out for some paddy bundles. Bundles were threshed in suspended condition by two cylinders rotating oposite to each other while they fed through the clearance between them from upper position at entrance to lower position at end. The concaves were removed to know the threshing function of this threshing method. The results obtained are as follows;
(1) As the height of bundles increases, the torn pieces of heads and rubbish decrease.
(2) Tensile force loaded to bundle at threshing and its fluctuation are great near entrance, but they are small at the other position
(3) The percentage of torn heads (ears) are greater at the first half than at the latter half of the bassage of bundle in threshing.
(4) The threshing capacity are great, and it seems that there will be still various means to raise up greatly the capacity of Head (Ear) Feeding thresher.