Abstract: A tree harvester provided with a rotatable worktable assembly is disclosed herein. The tree harvester includes a movable frame, a worktable assembly rotatably mounted to the movable frame and an upper frame rotatably mounted to the worktable assembly. The upper frame is provided with an articulated boom that includes a feller/grapple head. The worktable assembly includes a tree delimbing mechanism, a tree cutting mechanism and a log stacker. The operation of the worktable is advantageously automated so that the operator can use the boom while the worktable is processing a tree. The position of the worktable between the movable frame and the upper frame makes the tree harvester more compact than conventional tree harvester, while the independent rotation of the worktable assembly and of the upper frame with respect to the movable frame increases the flexibility of operation of the tree harvester.

Abstract: The disclosure herein describes a dual head delimber for mounting to one end of the longitudinal boom of a machine of the type used for delimbing felled trees; it comprises a cradle structure to which are pivotally mounted two sets of clamps, the sets being juxtaposed to one another; to assist in concurring the butt ends of the grasped trees, the sets of clamps are mounted at an angle on either side of the longitudinal axis of the boom to define a V-shaped arrangement. The invention is also concerned with an apparatus for delimbing felled trees which includes such dual head delimber.