Shear-mechanism-tree harvester
AssigneeCaterpillar Tractor Co.
InventorLeon A. Wirt
Life of this patent
Estimating the term…
Abstract
A shear mechanism includes shear members pivotally mounted to a first frame, with a second frame movable relative to the first frame, and first and second links connected to the second frame. The first and second links are also connected to the first and second shear members, and first and second cylinders are connected with the second frame and the first and second links respectively, so that actuation of the cylinders in one direction moves the links to bring the shear members together, and actuation of the cylinders in the other direction moves the links to move the shear members apart, with the second frame moving relative to the first frame upon such movement of the first and second shear members.
Claims10
A shear assembly comprising:
- first frame means;
- first and second shear members pivotably mounted to the first frame means to be movable toward and away from each other;
- second frame means movable relative to said first frame means;
- first and second links pivotably connected to the second frame means;
- the first and second links being pivotably connected to the first and second shear members respectively;
- first and second cylinder means, each pivotably connected with the second frame means, the first cylinder means being pivotably connected with the first link, the second cylinder means being pivotably connected with the second link;
- the actuation of the first and second cylinder means in one direction actuating the links to move the shear members toward each other, the actuation of the first and second cylinder means in the other direction actuating the links to move the shear members away from each other;
- the second frame means being moveable relative to the first frame means upon said movement of the first and second shear members toward and away from each other;
- and
- means for guiding said movement of the second frame means relative to the first frame means during said movement of the first and second shear members toward and away from each other.
Dependencies are inferred from the claim text.