DESEEDING METHODS 



93 



because of the possibility of marking the seed against the 

 hard straw when passing between the rollers . Notwithstanding 

 this possibility, the bulk of the deseeding of dry straw is 

 performed on one or other of several methods in vogue which 

 embody this principle. 



86. Two or Three Rollers. Fig. 50 illustrates in elevation a 

 method of deseeding by means of rollers, which may be 

 rotated by hand or power. Two upright gables A and A 

 support two or three horizontal shafts (usually two) B C D' 

 These are free to rotate in bearings E F G and E' F' G' ae 



FIG. 50 



shown. The bearings F E' F' G' are stationary, while those 

 of E G are free to move up or down, when subjected to slight 

 pressure. The spiral spring H and the steel spring I are 

 adjusted to offer the necessary resistance. Wooden rollers 

 J K L are secured to and near the left terminals of shafts 

 BCD respectively. Spur wheels M N 0, containing a like 

 number of teeth, are compounded with these respective shafts, 

 as are also a fast and loose pulley P and a handle lever Q, so 

 that the machine may be turned by hand or power. The 

 flax straw is shown at R and the seed bolls at S. 



