MANUFACTURE OF CASEIN. 



13 



that fall into the lower cylindrical drum in which a rapidly revolv- 

 ing iron beater drives the curd through a medium-mesh screen. For 

 the curd of not more than 20,000 pounds of buttermilk a curd mill 

 having both features referred to and one which is suitable for satis- 

 factory work can be purchased for about $50. If more material is to 



Fig. 4. — An inexpensive but satisfactory type of curd mill, possessing both the shreilding 

 and revolving beater features. 



be handled regularly it is advisable to purchase a larger, better con- 

 structed, and more expensive mill. 



CUED PEESS. 



The curd press is subjected to a heavy strain and necessarily must 

 be strongly constructed. A sufficient^ strong press rack can be 

 made easily of 4 by 4 inch material held together with f-inch iron 

 bolts. Two pieces of 4 by 4 inch surfaced material 5 feet long and 2 

 pieces 4 feet long are made into a rectangular form, the 5-foot pieces 

 being fastened to the shorter ones by the use of a f-inch mortise 

 in such manner as to leave a 30-inch space between the inner edges 



