80 



with saw teeth, separated by wooden brackets, three 

 eighths of an inch in thickness which catch in the 

 grooves in the disks. The grater when in position 

 looks like a drum with saw teeth, appearing about 

 one sixteenth of an inch above it. The beets go down 

 the inclined plane and are shoved against the grater 

 by an alternative motion by two mechanical pushers 

 having a reciprocating movement of 10 to 15 revolu- 

 tions a minute. The grater- in movement revolves 

 800 to 1000 times per minute. 



The grater is placed on a solid cast iron base and 

 is covered with a movable sheet iron cap. On the 

 upper part of the cap there is a small trench pierced 

 with holes over the full length of the grater., which 

 receives the water from a tap. This water spreads at 

 pleasure over the grater when in action. Under the 

 grater at each side there is a trough to receive the 

 pulp. 



3. HYDRAULIC PRESSES. 



The hydraulic presses are composed of a piston 

 of one foot in diameter by three feet in height, 

 sliding by friction in a cylinder ; this piston carries 

 a platform to receive the articles to be pressed. The 

 piston is moved by a force pump whose piston is one 

 inch in diameter. 



. The piston of the press lifts the platform between 

 four strong iron pillars firmly fastened to the base, 

 and to which apparatus there is a top or cap so 

 that the articles are pressed between the platform 

 and the cap. The diameter of the platform between 



