S0WI2Ca-MACHINES. 



153 



Fiff. 1&4. 



is made by Bichford <Sb Huffman^ of Macedon, IST. Y. It 

 is represented in 

 the accompany- 

 ing cut, showing 

 eight dropping 

 tubes. The mode 

 by which the 

 grain is dis- 

 charged from the 

 hopper down 

 these tubes is ex- 

 hibited in section in fig. 165 ; <? being the interior of the 

 hopper, hh a revolving wheel, the projecting rims of which 



form the bottom of the seed-holder ; 



the axle at a causes this wheel to 



revolve, and the small projections on 



the interior of the 



rim carry the seed 



to c, where it drops 



through an opening 



in the plate which 



forms the side of the 



seed-holder. The 



rapidity of discharge is perfectly con- croLection of du- 

 trolled by wheel-work, which causes the charger. 



axle a to revolve slowly or fast at pleasure. The 

 seed-holder is divided into two parts by the w^heel 

 a b, as shown by cross section in figure 166 ; one 

 part, d, containing wheat, barley, and other medium- 

 sized grains, and the ^is- 167. 

 other, c, for com, peas, 

 and the larger seeds. 

 This figure shows the 

 opening in the side- 

 plates, through which the grain is discharged. As these 

 two divisions must be used on separate occasions, the 



Cross-section of Seed- 

 holder. 



1 



W^=T ' i 



^/^^>^' 



Sliding Reversible Bottom of Hopper. 



:^ 



