20120175443 | CONTROLLED FEED-RATE SHREDDING - A method, and method-implementing system structure, for metering the flow of material through the shredding zone in a rotary shear shredder, which zone is defined, at least in part, by confrontingly rotating knives that are carried on a pair of adjacent, power-driven, nominally matched-motion counter-rotating shafts. The method includes holding the speed and rotational direction of one of the shafts essentially constant while selectively varying, in a manner variably differentiating the relative rotational motions of the two shafts, the speed, and under certain circumstances also the direction, of rotation solely of the other shaft. | 07-12-2012 |