Abstract: The specification describes a roller mill comprising a rotary grinding pan and grinding rollers adapted to roll on this grinding pan and which are journalled stationarily though with a provision for vertical pivoting. In accordance with the invention the grinding pan is supported by at least three hydrostatic axial individual bearings, which are arranged substantially symmetrically with respect to the grinding pan and can take up all vertical loads.

Abstract: The pre-grooved plates e.g. of chewing gum are advanced over a stationary breaker edge into the path of a rotating, polygonal (preferably triangular) breaker shaft whose apices form breaker edges which rotate past the stationary breaker edge. Each facet of the shaft is provided with a stop positioned to be engaged by the leading edge of the advancing plate. The distance across a facet from the respective stop to the respective rotating breaker edge is equal to the width of a strip to be broken from the plate at the next groove in the plate. The axis of rotation of the breaker shaft is transversally displaced from the level of the plate, by an amount sufficient to provide the rotating breaker edge, at the site where the breaking occurs, a velocity component in the direction of advance of the plate which approximately matches the velocity of advance of the plate. Accordingly, the advance and rotary breaking may proceed continuously.