Abstract: A knockdown, portable combination wheelchair and lift which is readily assembled and disassembled, thereby enabling convenient stowage and transport when not in use. The invention breaks down into a base, a chair, a footrest for the chair, and a boom having a sling. The base is U-shaped, having front casters and rear wheels. A mast projects vertically from the base, and can be folded down, parallel with the legs of the U, during disassembly. The chair mounts on the mast, and folds for compact stowage. A boom having winch, chain, and sling is supported by telescoping fit into the mast, and can raise and lower a passenger seated on the sling. This enables the chair portion to be removed, the lift now being able to penetrate a motor vehicle, and deposit the passenger therein. Both the boom and the chair are removable from the remaining components, so that the invention is selectively configured alternatively as a wheelchair or a lift.

Abstract: A tree harvester (3) is mounted on the front end of a steerable self-propelled vehicle (2) in line with the vehicle's longitudinal axis (8). The harvester frame (11) is pivotable about a longitudinal axis (13). A telescoping boom (15) having a plurality of grab jaws (24, 25) at one end is mounted on the frame for pivoting between a vertical and horizontal transverse position. Delimbing jaws (30, 31) are fixedly mounted to the frame. When the boom is vertical and retracted, the jaws are in line and form a pocket (36) which faces transversely so that the harvester can be steered sideways into the tree for grabbing and cutting off ahead of the vehicle. The harvester is then pivoted so that the boom and cut tree are disposed horizontally transversely and above the ground ahead of one side of the device. The boom is then extended so that the grab jaws thereon pull the cut tree trunk through the delimbing jaws.