Abstract: The invention relates to a transportable roller mill for reducing solids with a mill housing, a grinding pan, two grinding rollers, two swing lever units, a grinding pan drive and a gear for the grinding pan. It is further provided that the roller mil is arranged for transport and operation in a container. The swing lever units are respectively connected to the mill housing and supports extend from the connection regions of the swing lever units to the bottom of the container. Vibration dampers are provided between the container bottom and the supports. The invention further relates to a grinding installation.

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.