Abstract: A mobile metering and storage apparatus which includes a mobile unit such as, for example, a tractor of a tractor-trailer unit adapted to transport, store and meter material accommodated in the mobile unit. A discharge conveyor is provided at a floor level of the mobile unit for receiving and discharging material from the mobile unit. At least one feed conveyor is disposed at a floor level of the mobile unit for feeding material to the discharge conveyor. The feed conveyor may take the form of a single tapered screw supported in a cantilever fashion along one side of the mobile unit or may be fashioned as two cantilevered tapered screw conveyors supported on a head assembly disposed substantially centrally of the mobile unit and extending in a longitudinal direction thereof.

Abstract: A bin unloading apparatus for unloading materials such as, for example, sawdust, peat, grains, silage, municipal waste, dry chemicals, shredded tires, and other ground bulk products accommodated in a bin, with the bin unloader including two cantilevered tapered screw conveyors and a single standard screw. The screw conveyors draw materials from the walls of the bin toward the center. The materials drop to the exit screw mounted at a right angle to the screw conveyor with the material in the exit screw then being transported out of the bin. The screw conveyors are supported on a head assembly mounted on a support beam of rail using a cam follower bearing and a chain drive system provides a reciprocating motion of the head assembly utilizing a ratchet mechanism driven by a drive of the exit screw. The screw conveyors are attached to the head assembly by a flange attachment and a spring loaded arm or linkage mechanism runs on an eccentric to drive the chain.