Scrap chopper

A scrap chopper adapted to receive a narrow strip of scrap metal being fed from a slitting machine, said chopper comprising means for directing the strip along a predetermined path, a stationary cutting bar having a substantially straight cutting edge, a rotor including a rotary cutting bar having a substantially straight cutting edge, means supporting said rotor for rotation on an axis to orbit said rotary cutting bar adjacent said path, means supporting said stationary cutting bar adjacent said path and with its corresponding said cutting edge forming an acute angle with respect to each of two perpendicular reference planes including said axis of rotation, said rotor having means positioning said rotary cutting bar with its corresponding said cutting edge extending at an acute angle with respect to each of two perpendicular reference planes including said axis of rotation, each of said cutting edges having a non-uniform progressively changing radius with respect to said axis of rotation, at least one of said cutting bars having a plurality of perpendicular flat surfaces forming a plurality of parallel said cutting edges, means for selectively mounting said one cutting bar to position each of said cutting edges for engaging the strip, and means for driving said rotor to produce effective scissors-like shearing of the strip by said cutting edges.

A scrap chopper adapted to receive a narrow strip of scrap metal being fed from a slitting machine, said chopper comprising means for directing the strip along a predetermined path, a stationary cutting bar having a substantially straight cutting edge, a rotor including a shaft having a frusto-conical shaft portion, means defining a recess within said shaft portion, a rotary cutting bar disposed within said recess and having a substantially straight cutting edge, means supporting said rotor for rotation on an axis to orbit said rotary cutting bar adjacent said path, means supporting said stationary cutting bar adjacent said path and with its corresponding said cutting edge forming an acute angle with respect to each of two perpendicular reference planes including said axis of rotation, means mounting said rotary cutting bar within said recess to position its corresponding said cutting edge at an acute angle with respect to each of two perpendicular reference planes including said axis of rotation, each of said cutting edges having a non-uniform progressively changing radius with respect to said axis of rotation, and means for driving said rotor to produce effective scissors-like shearing of the strip by said cutting edges.

A scrap chopper adapted to receive two narrow strips of scrap metal being fed from a slitting machine, said chopper comprising means for directing the strips along corresponding predetermined paths, a set of stationary cutting bars each having a substantially straight cutting edge, a rotor including two axially spaced rotor portions, means forming a seat on each of said rotor portions, a rotary cutting bar mounted on each of said seats and having a substantially straight cutting edge, means supporting said rotor for rotation on an axis to orbit said rotary cutting bars adjacent corresponding said paths, means supporting said stationary cutting bars adjacent corresponding said paths and with each said cutting edge forming an acute angle with respect to each of two perpendicular reference planes including said axis of rotation of said rotor, each of said rotary cutting bars being arranged to position its corresponding said cutting edge at an acute angle with respect to each of two perpendicular reference planes including said axis of rotation of said rotor, each of said cutting edges having a non-uniform progressively changing radius with respect to said axis of rotation, and means for driving said rotor to produce effective scissors-like shearing of each strip by the corresponding said cutting edges.