AGRICULTURAL MACHINERY lOOQ 



owing to the lowering and slope of the screen and the vibration of the 

 apparatus, to the point from which it was raised. 



Thus speed plays an essential part in the ovitput of the appaiatus 

 and it cannot go below a certain limit, otherwise the apparatus will not work 

 and the grains tend to descend towards the end s' . 



786 - The Vasino Paddy Cleaning Machine, fitted to a Threshing Machine. — tarchetti a. 



in I'l Giornalc di Kisicoltura, Ylih Year, Xo. 9, pj). 131-154, i fit;. Vercelli, Ma}' 15, igi6. 



As shown by the appended figure, the paddy cleaning machine de- 

 signed by Messrs. Vasixo Brothers (at Ponzana, province of Xovara) can 

 be fitted beneath an ordinary machine for threshing this cereal. 



The cleaning apparatus is entirely suspended by wooden supports to 

 the lower cross-members of the framework of the thresher. It may re- 

 ceive the reciprocating screening movement eithe;" by means of the lever 

 P P actuated b}' an eccentric mounted on the shaft of the ist beater (the 

 whole shown in dotted lines on the figure), or still better by means of a 

 special countershaft L, fitted with an eccentric or elbow-joint and driven 

 by a belt. 



The cleaning apparatus does not gather ever^-thing that falls from 

 the gratings of the thresher, but cnly the material from the ist shaker and the 

 2nd beater, because generally the products of the ist beater do not need 

 cleaning, while those of the last shakers are so full of impurities, and at 

 the same time so small, that it is desirable to blow them separately b}'' hand. 



The threshing product falls on an inclined plane (which, MESSRS Vasino 

 have divided with advantage into several parts : A, A' , A" ,to save space 

 in height), which conveys it to the ist screen B. The latter may be of 

 perforated sheet iron, but the inventors prefer plates with oblique holes 

 (shown in a vertical section on the principal figure, and in plan on the small 

 figure annexed) in order the better to prevent leaves, stalk fragments, 

 glumes, etc. from passing into the lower part. 



The nozzle of the fan divides into 2 branches, M and A', at the en- 

 trance to which is a slide valve by which the current of air in both may be 

 regulated. 



The air emerging from M strikes the grain falling from the sieve B and 

 separates the small straw, empty grains, light seeds and dust, ejecting them 

 from the machine together with the leaves etc. falling from the end of B. 



The heavy grains drop on the 2nd screen, which has a solid part C 

 and the rest punched out like the 1st screen, but with smaller hcles, with 

 a reverse direction of slope at D. 



The stones and other large impurities gather in the channel E, from 

 which they are expelled at one side of the machine. 



The paddy falls into the plane C , then on to F, and G, and into the chan- 

 nel H, which discharges it on the other side of the cleaner. In falling from 

 F to G, however, the paddy is subjected to the air current of the channel 

 N, which, striking against G, forms an eddy holding the screens suspended 

 for some moments and freeing them from the last impurities. 



This cleaner, both simple and efficient, does not take up much space, 

 requires little driving power and can be fitted to any threshing machine. 



