Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1995-06-07
1998-01-20
Werner, Frank E.
Material or article handling
Vertically swinging load support
Shovel or fork type
414642, 414728, 414664, B66F 906
Patent
active
057095230
ABSTRACT:
A material handling lift having a movable frame, a mast mounted at one end to a shuttle assembly movable on the frame, and a load handling assembly attached to the mast by means of two extending arm members. The frame comprises two longitudinal C-shaped side rails in which the shuttle assembly can be reciprocated by wheels which engage the inner surfaces of the rails. The sections of the wheels which engage the rails are arched to prevent the lift from tipping when the lift is moving in a sloped direction. Guide wheels mounted on the shuttle assembly rotate across the surfaces of the sides of the upper rails, thereby stabilizing movement of the shuttle assembly along the rails. The shuttle assembly can be sustained in any position along the rails by operation of a hand-operated shuttle brake. The load handling assembly is characterized by a pair of forks adjustably mounted on two horizontally parallel bars, the lower bar attached to a curved extension arm which can be raised or lowered by means of a hydraulic cylinder, and the upper bar attached to a tie bar assembly extended and retracted by a hydraulic cylinder, thereby tilting the forks forward or backward, respectively. The lift can be easily disassembled and packaged in a crate to be shipped by the removal of five pins.
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