Cam actuated tree cutting shears and buncher

Details Cam actuated tree cutting shears and buncher Cam actuated tree cutting shears and buncher

1976-04-23

1977-09-27

Simpson, Othell M.

Woodworking

Bench dog

144 3D, 144 34E, A01G 2308

Patent

active

040504883

ABSTRACT:
Shear knives are pivoted, side by side with sharp edges opposed, by a pair of adjacent ends to a pivot strap. Cam rollers are mounted respectively for rotation on the knives at the junctions of their free ends and outboard sides. Rearwardly converging cam edges are mounted in forwardly extending arms of a forwardly movable frame, and arms being adapted to receive the pivot strap transversely therebetween and a tree of not over an equal diameter. The knives are slidably mounted in slots in the respective arms with their free ends forward and their roller cam followers respectively engaging the converging cam edges on which they are spring biased forwardly. The knives are cammed closed to cut a tree as the movable frame moves forwardly relative to tree and knives. A swinging member, having a transverse blade pivoted to the top thereof, is itself pivoted to one of the pair of arms and is hydraulically actuated to swing past a cut tree between the arms and back to raise the tree clear of the shear knives and onto a raised floor rearwardly and hold it there. A second pair of arms vertically spaced above the first pair also receives the tree which is releasably retained therebetween by a one-way pair of gates at the ends thereof.

REFERENCES:
patent: 2529934 (1950-11-01), Gracey et al.
patent: 3807472 (1974-04-01), Propst et al.
patent: 3848648 (1974-11-01), Dika et al.
patent: 3911981 (1975-10-01), Tucek

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