Mobile spraying units

Claim 1

A MOBILE UNIT FOR THE CHEMICAL TREATMENT OF A BODY OF WATER COMPRISING A BOAT, AN OUTBOARD MOTOR MOUNTED ON THE STERN OF SAID BOAT, SAID OUTBOARD MOTOR INCLUDING A FRAME MOUNTED FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS OF ROTATION, ON WHICH FRAME IS MOUNTED AN ENGINE WITH ITS DRIVE SHAFT EXTENDING DOWNWARDLY, A SPRAYING SYSTEM INCLUDING A PUMP MOUNTED ON THE LOWER END OF THE DRIVE SHAFT AND DRIVEN THEREBY, THE INLET OF SAID PUMP ADAPTED TO BE SUBMERGED BENEATH THE SURFACE OF SAID BODY OF WATER WHEN SAID BOAT IS FLOATING THEREON, A HORIZONTAL MANIFOLD ABOVE THE WATER LEVEL OF SAID BOAT AT THE STERN OF SAID BOAT CONNECTED WITH THE OUTLET OF SAID PUMP AND PIVOTABLE ABOUT SAID VERTICAL AXIS WITH SAID FRAME AND ENGINE, A PLURALITY OF SPRAY MEANS ABOVE SAID WATER LEVEL AND EXTENDING REARWARDLY FROM SAID MANIFOLD, A TANK ADAPTED TO CONTAIN A TREATING CHEMICAL ON SAID BOAT, WATERCONVEYING MEANS COMMUNICATING SAID TANK AND THE OUTLET SIDE OF SAID PUMP, AND ADDITIONAL WATER-CONVEYING MEANS FOR CONVEYING WATER CONTAINING SAID CHEMICAL FROM SAID TANK TO THE SPRAYING SYSTEM FOR ULTIMATE DISCHARGE FROM SAID SPRAY MEANS, WHEREBY THE WATER STREAMS DISCHARGED FROM SAID SPRAY MEANS MAY BE EMPLOYED AS A PROPULSIVE FORCE FOR DRIVING SAID BOAT FORWARDLY AND ALSO AS THE PROPULSIVE FORCE FOR STEERING SAID BOAT BY TURNING SAID FRAME, ENGINE AND MANIFOLD ABOUT SAID VERTICAL AXIS.