Device for reducing polymers or the like to substantially uniform small size pieces
OwnerBernard H. Graniteinventor
Life of this patent
Estimating the term…
Abstract
A machine for chopping polymers, and in particularly elastomeric materials such as tires, into uniform small size particles through the use of a rotating cutting head having teeth that have side cutting edges generally perpendicular to their outer end edges, which are parallel to the axis of rotation, and interfit with stationary teeth formed in complimentary shape. The cutting head is used in combination with a material infeed mechanism that maintains a steady, positive feed of material to reduce the elastomeric material into uniform small chunks that can be used for fuel, or otherwise more readily disposed than the present large size tires or similar articles.
Claims15
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade including side stationary teeth edges parallel to the side edges of the teeth on the rotor, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor and the adjacent side edges of interfitting teeth provide a scissor like cutting action along the mating sides of the movable and stationary teeth.
A device for shredding polymers such as vehicle tires comprising a support frame, movable cutting blade means having a rotationally leading surface and a cutting edge formed into a plurality of speced, blunt ended parallel sided teeth rotatably mounted on said frame about an axis, stationary cutting blade means having a generally planar feed surface and a cutting edge formed into a plurality of spaced blunt ended parallel sided teeth, the teeth formed on said movable cutting blade means and on said stationary cutting blade means interdigitating upon rotation of said movable cutting blade means to provide discrete pieces of polymeric material advanced across the stationary cutting blade means, the plane of said feed surface being substantially parallel to and intersecting said axis of rotation, said movable cutting blade means being positioned so that the leading surface thereof is parallel to the feed surface substantially at the time when the respective teeth on the movable blade means reach the plane of the feed surface on a cutting stroke.
A device for chopping elastomeric materials comprising a support frame, a rotor rotatably mounted on said frame comprising a wall member having a plurality of part annular grooves formed therein, and ribs formed between said part annular grooves, at least one movable cutting blade extending in direction axially along the rotor, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said ribs being positioned to back said teeth of said movable cutting blade on a rotationally trailing side of said movable cutting blade, said teeth on said movable cutting blade being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, a stationary cutting blade mounted on said frame having teeth adapted to mate with and be complimentary to the teeth formed on said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor, and the teeth on said stationary cutting blade align with and pass through portions of said grooves on said rotor as said rotor rotates.
A device for chopping elastomeric materials comprising a support frame, a rotor including at least one movable cutting blade extending in direction axially along said rotor and being rotatably mounted on said frame, said movable cutting blade having a plurality of teeth formed adjacent one edge thereof extending toward the periphery of the rotor, said teeth being defined by outer end edges and spaced side edges generally perpendicular to the axis of rotation of said rotor, means to retain said movable cutting blade on said rotor including a wedge groove defined in said rotor and extending along and opening to said movable blade, said movable blade being backed by a shoulder formed on said rotor, a wedge mounted in said wedge groove and forced against said movable blade to force the blade against said shoulder, means to retain said wedge in position in said groove, a stationary cutting blade having a cutting edge having teeth adapted to mate with and be complimentary to the teeth formed in said movable cutting blade, and means to mount said stationary cutting blade adjacent the peripheral edge of said rotor so that said movable cutting blade teeth and said stationary cutting blade teeth interfit upon rotation of said rotor.
Dependencies are inferred from the claim text.