PERFECTING THE DETAILS. 



195 



and as also the handle, a, should be of hard wood.. 

 The pieces, Jc and e, have each a half-moon notch for 

 the spool, m, to turn in. The crank, #, is reinforced 

 by the pieces, c, d and e, to strengthen it where it 

 encloses the square shank of the spool, m; also the 

 pieces, y and h, serve to give a firm setting to the 

 handle, a. 



a 



FIG. 91. TRANSVERSE SECTION OF AXLE SHAFT. 



In the vertical section given in Fig. 100, the imaginary 

 line of cleavage passes through the exact center of the 

 windlass or spool stick, m, lengthwise, and also through 

 the handle, a, lengthwise. 



Instead of a pouch or cylinder, what may be called a 

 sieve may be used for dropping feed. Figure 101 illus- 

 trates one of these turned bottom up, to show that the 

 bottom is made with a double slant, and consists of wire 

 mesh of different sizes, like that in a cylinder or pouch, 

 and a strip of tin in the center, this last serving as a 

 floor to hold the grain when the sieve is charged. A 

 long row of these sieves may be fastened to an iron pipe 

 by bolts passing through holes drilled in 



