THE EXTRACTION OF JUICE BY MILLS. 



The Le Blanc mill is shown in Fig. 111. It consists of a main central 

 roller 0, round the periphery of which are placed three other rollers 5, c, d ; 

 the cane passes between each of these and the main central roller, so that it is 

 crushed three times. Two trash turners e are required. 



Five-Roller Mills. The five-roller mill, which is frequently 

 mentioned in the ephemeral literature of the cane, is merely a typical three- 

 roller mill in which the headstocks are extended so as to receive a pair of 

 rollers which are placed above and in front of the three-roller mill ; the shaft 



FIG. 109. 



of the top roller of the mill proper is extended on one side so as to receive a 

 large spur wheel, which gears with one of equal diameter on the gudgeon of 

 the top of the two preliminary rollers. On the other side of these rollers are 

 pinions gearing with each other, by means of which motion is transmitted to- 

 the lower of the two rollers. 



Nine, Twelve, and Fifteen -Roller Mills. These terms merely 

 refer to the number of rollers in a train and not to the number of rollers in a 

 unit. The addition of a unit to an existing train has a two-fold effect, namely, 

 in increasing both the extraction and the tonnage worked. The writer's- 

 experience of these combinations may be thus summed up. 



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