Unloading system and apparatus

Claim 1

APPARATUS FOR UNLOADING LIGHT WEIGHT BULK MATERIAL FROM A CONTAINER, COMPRISING IN COMBINATION AN OVERHEAD ELONGATE TRACK STRUCTURE BENEATH WHICH A CONTAINER OF BULK MATERIAL MAY BE LOCATED FOR UNLOADING, A CARRIAGE SUPPORTED ON AND MOVABLE ALONG THE TRACK STRUCTURE LONGITUDINALLY OF THE LATTER AND INCLUDING TRANSVERSE MEMBERS, A SUCTION PIPE, A HOLLOW SWIVEL JOINT UNIT BETWEEN SAID TRANSVERSE MEMBERS AND HAVING AN END OF THE SUCTION PIPE CONNECTED THERETO, THE SWIVEL JOINT HAVING AN OUTLET FOR CONNECTION TO SUCTION MEANS, PIVOT MEANS OPERATIVELY COUPLING SAID SWIVEL JOINT WITH SAID CARRIAGE TRANSVERSE MEMBERS AND SUSPENDING THE SWIVEL JOINT AND THE SUCTION PIPE FOR SWINGING MOVEMENT TRANSVERSELY OF THE TRACK STRUCTURE, POWER MEANS MOUNTED ON SAID CARRIAGE OPERATIVELY COUPLED WITH THE SWIVEL JOINT FOR EFFECTING THE SAID SWINGING MOVEMENT THEREOF, CARRIAGE MOVING POWER MEANS MOUNTED ON THE CARRIAGE, A DRIVING CONNECTION BETWEEN SAID CARRIAGE MOVING POWER MEANS AND THE TRACK STRUCTURE FOR EFFECTING MOVEMENT OF THE CARRIAGE ON THE TRACK STRUCTURE, A SUCTION SNOUT EXTENDING CONCENTRICALLY FROM THE OTHER END OF THE SUCTION PIPE AND AXIALLY MOVABLE THEREON FOR CHANGING THE EFFECTIVE LENGTH OF THE SUCTION PIPE, AND OTHER POWER MEANS MOUNTED ON THE CARRIAGE AND OPERATIVELY CONNECTED TO SAID SNOUT FOR EFFECTING MOVEMENT OF THE LATTER AXIALLY OF THE SUCTION PIPE, THE SAID DRIVING CONNECTION BETWEEN SAID CARRIAGE MOVING POWER MEANS AND THE TRACK STRUCTURE EMBODYING A CABLE PULLEY CONNECTED TO AND ROTATED BY THE CARRIAGE MOVING POWER MEANS, AND A CABLE WRAPPED AT LEAST ONE TIME AROUND SAID PULLEY AND HAVING ITS OPPOSITE ENDS CONNECTED TO OPPOSITE ENDS OF SAID ELONGATE TRACK STRUCTURE.