MANUFACTURE OF CASEIN. 
13 
that fall into the lower cylindrical drum in which a rapidly revolv- 
ing iron boater 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 shredding 
and. revolving beater features. 
be handled regularly it is advisable to purchase a larger, better con- 
structed, and more expensive mill. 
CURD PRESS. 
The curd press is subjected to a heavy strain and necessarily must 
be strongly constructed. A sufficiently 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 
