Marine harvester with compressor means

Claim 1

IN A MACHINE FOR HARVESTING UNDERWATER, PLANTS, INCLUDING A HULL AND MEANS FOR PROPELLING THE HULL; A CONVEYING STRUCTURE PIVOTALLY SECURED TO THE FRONT END OF THE HULL COMPRISING: A PAIR OF OPEN MESH LATERAL CONVEYORS ADAPTED TO BE AT LEAST PARTIALLY SUBMERGED BENEATH THE WATER SURFACE AND WHEN SO SUBMERGED TO MOVE IN A DIRECTION TO CONVEY MATERIAL TOWARD THE CENTER OF THE HULL, AN INCLINED CONVEYOR DISPOSED REARWARDLY OF THE LATERAL CONVEYORS IN A POSITION TO RECEIVE MATERIAL CONVEYED BY THE LATERAL CONVEYORS AND TO CONVEY THE SAME UPWARDLY TOWARD THE HULL, SAID LATERAL CONVEYORS HAVING THEIR INNERMOST ENDS DISPOSED INWARDLY OF THE OUTER EDGES OF THE INCLINED CONVEYOR WHEREBY WATER PASSING THROUGH THE OPEN MESH OF THE LATERAL CONVEYORS WILL BACKWASH THE RETURN SURFACE OF SAID CONVEYORS AS THE HULL MOVES THROUGH THE WATER TO DISLODGE MATERIAL CLINGING TO SAID RETURN SURFACES AND TO CAUSE SUCH MATERIAL TO FALL UPON THE INCLINED CONVEYOR.