Cummins-allison Corporation

James M Amburn

Donald E Raterman

Heinz W Schrieter

A shredding device uses a plurality of interleaving, counter-rotating discs to reduce sheets of material into longitudinal strips. One or more parallelogram or diverging configured notches, formed in the periphery of each disc, cut the longitudinal strips into segments. Deflectors disposed in the spaces between each disc clear unwanted material from between the discs.

Shredder cutting discs

A document shredder comprising the combination of a pair of counter-rotating rolls forming integral cutting discs interleaved with each other for cutting documents fed between the rolls into multiple strips, the discs also having cutting edges extending longitudinally of the rolls for cutting the multiple strips into short segments; multiple spacers mounted along the length of each roll, each of said spacers extending into the space between a pair of adjacent cutting discs on the same roll, and multiple diverters spaced along the length of each roll in register with the discs on the respective rolls, each of the diverters having an arcuate surface in closely spaced relationship to the radially outer surfaces of one of the discs for preventing the accumulation of the short segments of the cut documents adjacent the rolls.

Growing community of inventors

Mundelein, IL, United States of America

James M Amburn