Land clearing machine attachment
OwnerJohn P. O'Haganinventor
Life of this patent
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Abstract
A machine attachment of the type having a plurality of swinging blades and a rotor that rotates about a horizontal axis has a cylindrical tubular rotor with stub shafts and bearings at each end for rotation about the horizontal axis, so that the body of the rotor is a single piece, large diameter tubular section having improved structural stiffness and improved flywheel effect. The blade pivot shaft attachments are mounted directly on the external surface of the tubular rotor and inset mounting pockets allow the blades to swing through the rotor interior.
Claims15
In a land clearing machine attachment of the type having a plurality of swinging blades that rotate about a horizontal axis, the improvement comprising:
- a monolithic cylindrical rotor tube having internal and external surfaces and being mounted for rotation about the horizontal axis;
- a plurality of swinging blades having a cutting tip at the first end and a shaft receiving mounting hole at the second end;
- blade pivot shafts, the blades being mounted at their second end for free rotation on the blade pivot shaft, so that the blade tips swing through 360° at a radius thereabout;
- and
- a plurality of tubular blade pivot shaft attachments mounted directly to the external surface of the tubular rotor to support the blade pivot shafts parallel to the horizontal axis, the blade pivot shaft attachments receiving and supporting the blade assembly shafts so as to locate and hold the blades for free rotation thereon with the arcs of blade tip radii passing through clearance holes formed in the rotor tube wall and within the internal surface of the rotor.
A method for clearing brush and trees from land comprising the steps of:
- providing a monolithic cylindrical tube of substantial wall thickness, with exterior and interior surfaces and a horizontally oriented longitudinal axis;
- providing a plurality of blades with a cutting edge at one end and an attaching hole at the other;
- pivotally attaching the blades directly to the exterior surface of the cylindrical tube, to swing about an axis parallel to the longitudinal axis;
- cutting clearance holes through the cylindrical tube wall and interior to allow the blades to swing through 360 degrees;
- rotating the cylindrical tube and swinging blade assembly about the longitudinal axis;
- and
- crowding the rotating assembly against brush and trees so as to clear land.
A method for making a land clearing machine attachment of the type having a plurality of swinging blades and a rotor that rotates about a horizontal axis, comprising the steps of:
- providing a plurality of blades having given percussion and swing radii;
- providing a cylindrical tube rotor having an outside diameter, wall thickness, external and internal surfaces for the rotor;
- cutting spaced apart holes through the wall thickness of the cylindrical tube to provide clearance for the blade swing radius;
- assembling the swinging blades on blade pivot shafts separated by tubular spacers;
- mounting the tubular spacers and pivot shafts directly to the external surface of the cylindrical tube so that the blades can swing through the spaced apart clearance holes;
- mounting the cylindrical tubular rotor for rotation;
- and
- rotating the cylindrical tubular rotor so that the swinging blades stand out to a cutting diameter and cut brush and trees for land clearing.
Dependencies are inferred from the claim text.