THE EXTRACTION OF JUICE BY MILLS. 



headstocks ; these chairs may be a plane surface in which case the adjustment 

 of the trash turner is effected by the insertion or removal of wedges. In yet 

 more recent designs the trash bar is mounted on a trunnion bearing as seen at I 

 in Fig. 108 ; its adjustment being made by means of the lever as a bearing 

 on the mill cheek. 



FIG. 113. 



The size and setting of the trash turner is a point of very considerable 

 importance. In the first place its object is to direct the partially crushed 

 cane between the top and back rollers, and it is usually set sloping slightly 

 downwards in the direction in which the cane travels. If it is set too close 

 to the rollers, there is insufficient room for the blanket of megass to pass 

 without causing enormous friction, and if set with too great a clearance it 

 ceases to perform its proper functions. As friction depends on the area of 



183 



