US 7,584,921 B1 · Shredding apparatus and method of clearing land

Abstract

A shredding apparatus utilizes a cylindrical drum adapted for quickly and effectively clearing large tracts of land. Several blocks are positioned in two spiral rows on the periphery of the drum and are secured to the drum by welding. The blocks in each row are spaced from one another an axial distance that provides a complete sweep of the land as the drum rotates. Each of the blocks includes a replaceable cutter tooth. The teeth each include a shank that is anchored in a hole in each block. At least one block is mounted along each edge of the drum at a slight outward angle between about 2°, and about 15°, and is tilted outwardly between about 2° and about 5° so that its corresponding tooth provides protection of the drum edge. All of the remaining blocks are mounted so that the teeth are parallel with the drum axis.

Claims16

Dependent claims

A shredder assembly adapted for use in clearing terrain of unwanted debris and growth comprising:

a. a drum having a cylindrical surface and first and second edges, said drum mounted on a drive shaft;
b. a plurality of blocks mounted on the cylindrical surface of the drum arranged in rows from one edge of the drum to the other edge, each block provided with a first hole to receive a cutting tooth, and a second hole, each block being in the shape of a rectangular parallelepiped having two sides, a top surface and a bottom surface, and a front surface and a rear surface which, except for blocks mounted on the edge of the drum, are parallel to the axis of the shaft;
and
c. said cutting tooth having a shank that engages said first hole in each block, said cutting tooth facing the direction of rotation of the drum.

1 more element

A shredder drum for use in clearing land, said drum having a cylindrical surface surrounding a drum axis, and two edges, and including:

a. a plurality of blocks mounted around the cylindrical surface of the drum in a plurality of spiral rows parallel to one another, the blocks arranged in each row from an edge mounted block along one edge of the drum to an edge mounted block along the other edge, each block having a front surface and provided with a first hole to receive a cutting tooth, and a second hole;
b. each said edge mounted block positioned on the drum so that said front surface of each edge mounted block forms an angle of between 2° and 15° with respect to the axis of the drum, and each of the remaining blocks positioned so that their front surface is parallel to the drum axis, and
c. a tooth engaging said first hole in each block, the tooth having a cutting surface that, when so engaged, is at right angles to the direction of rotation of the drum.

Dependencies are inferred from the claim text.

Shredding apparatus and method of clearing land

Life of this patent

Shredding apparatus and method of clearing land

Life of this patent

Abstract

Claims16