USA Roller or ball mill for the refining of cocoa ...
A mill for the refining of cocoa and chocolate and the grinding of paints, enamels and the like which consists of an outer tubular stator and an inner rotor revolvable in the stator. Forks are provided on the outer wall of the rotor for supporting rollers for rotation while permitting the rollers to be urged outwardly when the rotor turns so that the rollers ride on the inner surface of the ...