430 



A]>pcndix. 



COTTOX-WQOU 



DESCRIPTION 



OF 



WHITNEY'S SAW -GIN. 

 Plate 5. 



Figure 1 represents an end elevation of the machine. 

 Fig, 2 also an end elevation with the top part thrown 

 back, the side of which is seen partly removed, in ordes 

 to exhibit its internal construction. Fig. 3 is a plan view, 

 and Jig. 4 is an end view of the brushing-roller and cir- 

 cular saw. 



In this plate the corresponding letters denote similar 

 parts in all the figures ; a, a, is the frame ; b is the 

 band actuating the band wheels c, which are fixed on the 

 end of the axis of the roller e, which carries the saws,^^/*; 

 g is the brushing-roller, upon the axis of which is fixed a 

 small roller h, which presses upon the band i, carrying 

 the wheel j, and causes the brushing-roller to be driven 

 with great velocity ; ^ is a series of ribs or metallic 

 grating, so constructed as to fit nearly close between the 

 sawsjTyJ', and to admit a portion of their teeth through 

 the apertures, in order to free them from any particles of 

 the cotton fibre which may adhere to them ; / is a board 

 placed in the direction represented, having a number of 

 notches corresponding to the number of saws cut in the 

 lower edge, which press upon the metallic ribs or grating, 

 and thereby form a hopper or receptacle for the seed 

 before it is freed from the cotton ; m is an aperture in the 

 top cover to admit the supply of seed ; n, n, are boards 



placed 



