Waste product ripping and grinding machine and methods of constructing and operating the machine
AssigneeMorbark, Inc.
InventorJames L. Strong
Life of this patent
Estimating the term…
Abstract
A vehicle has a housing mounting within it a rotor assembly comprising parallel shafts having intermeshing cutter discs in axially spaced relation thereon. The discs have radial projections with first cutting edges extending axially to face in a rotatively leading direction. Cutter segments carried on the discs project radially outwardly to provide second cutting edges of lesser axial extent facing in the leading direction. A toothed member mechanism carries teeth which project into the axial spaces between the discs and provides axial surfaces for coacting with the first and second cutting edge.
Claims18
Disintegrating apparatus for waste wood and other fragmentable material, comprising:
- a. a material receiving housing open at one end for receiving material to be fragmented and at another end for the discharge of fragmented material, and having opposing side walls;
- b. a rotor assembly comprising parallel shafts with an array of axially spaced cutter elements on each disposed in axially intermeshing relation with cutter elements on the other;
- c. mechanism for driving said shafts in counter-rotation;
- d. said cutter elements comprising radially projecting, circumferentially spaced teeth with rotatively leading first cutting edges thereon configured to take an aggressive bite of said material;
- and
- e. cutter teeth segments carried on said teeth to project generally radially therefrom and having second cutting edges thereon radially outwardly of said first cutting edges configured to take an initial axially narrower bite of said material.
A cutter disc for the drive shafts of rotor assemblies on wood fragmenting machines, comprising:
- a. a shaft receiving annular base having cutter elements radially projecting in star-like array with hook projections thereon, providing first cutting edges terminating forwardly in a rotatively leading direction, and
- b. cutter segments mounted on said cutter elements to extend radially beyond said first cutting edges and providing second ripping cutting edges terminating forwardly in a rotatively leading direction circumferentially beyond said first cutting edges.
A cutter disc for the drive shafts of rotor assemblies on wood fragmenting machines, comprising:
- a. a shaft receiving annular base having cutter elements radially projecting in star-like array with hook projections thereon, providing first cutting edges extending axially;
- b. cutter segments mounted on said cutter elements to extend radially beyond said first cutting edges and providing second ripping cutting edges of lesser axial extent than said first edges;
- and
- c. wherein said cutter elements have peripheral relief surfaces terminating forwardly in a rotatively leading direction in said first cutting edges which merge with undercut concave surfaces forming a leading face portion rotatively, and said segments mount on said elements to project radially therefrom outwardly.
Dependencies are inferred from the claim text.