Abstract: A tree shearing apparatus is provided which cuts virtually all of the wood fibers at an oblique angle thereto thus reducing power requirements by improving the shearing action. Upward compression and/or splitting forces on the trunk are very significantly reduced as compared with the prior art devices and provision is made for a major portion of the compressive forces to be transmitted downwardly to the stump. An increased recovery of usable wood may also be realized by virtue of the use of the present invention. The tree shearing apparatus includes a support means adapted to be positioned adjacent the trunk of a standing tree. The apparatus includes first and second cutter blades each having a cutting edge mounted to the support means, with the cutter blades projecting generally forwardly from the support means.

Abstract: The following specification discloses a tree harvesting apparatus controlled from a light weight tracked vehicle having a rotatable platform for holding a boom apparatus to which a harvester head is hingeably attached. The harvester head comprises shearing means and delimbing knives mounted to a support member which can be positioned by the boom against a tree to be severed and then rotated into a horizontal position for the delimbing and severing of a tree into bolts in proximity and to the side of the control vehicle.