Recirculating liquid fertilizer apparatus with spiral agitation blade

Claim 1

A MOBILE SLURRY FERTILIZER SPRAY DEVICE COMPRISING A MOBILE CHASSIS; A HORIZONTALLY DISPOSED CYLINDRICAL SLURRY TANK MOUNTED ON SAID CHASSIS; A SUMP DEPENDING FROM THE BOTTOM OF SAID TANK AT ONE END; SAID SUMP HAVING AN INCLINED CLOSED BOTTOM; A ROTATABLE SPIRAL BLADE MOUNTED IN SAID TANK; SAID SPIRAL BLADE ROTATING IN A DIRECTION THAT WILL CONSTANTLY MOVE THE SLURRY TOWARD SAID ONE END OF THE TANK HAVING THE SUMP AND INTO SAID SUMP, IN CLOSE PROXIMITY TO THE WALLS OF SAID TANK, AND MIXING THE SLURRY; A SUCTION CONDUIT CONNECTED TO SAID SUMP AND SPACED ABOVE THE BOTTOM OF SAID SUMP; A CENTRIFUGAL PUMP HAVING A SUCTION INLET AND A PRESSURE OUTLET; SAID SUCTION INLET CONNECTED TO SAID SUCTION CONDUIT FOR WITHDRAWING SLURRY FROM SAID SUMP; A SLURRY SPRAY NOZZLE; CONDUIT MEANS CONNECTING SAID PRESSURE OUTLET OF SAID CENTRIFUGAL PUMP TO SAID SLURRY SPRAY NOZZLE; A BYPASS LINE CONNECTED AT ONE END TO SAID CONDUIT MEANS AND AT ITS OTHER END TO SAID CYLINDRICAL SLURRY TANK; AN ADJUSTABLE BYPASS VALVE POSITIONED IN SAID BYPASS LINE FOR CONTINUOUSLY RETURNING SLURRY PUMPED FROM SAID TANK BACK TO SAID TANK AT SELECTABLE RATES WHEN SAID MOBILE SLURRY FERTILIZER SPRAY DEVICE IS IN OPERATION; MEANS FOR ADJUSTING SAID VALVE TO RESTRICT THE BYPASS FLOW OF SLURRY FERTILIZER AND PROVIDE A SELECTED BYPASS RATE AND THEREBY A DETERMINABLE PRESSURE AT SAID SPRAY NOZZLE; A PRESSURE GAUGE POSITIONED IN DIRECT LINE BETWEEN SAID PUMP AND SAID NOZZLE AND GIVING A READING CORRESPONDING TO THE SLURRY PRESSURE GOING TO SAID NOZZLE THEREBY PROVIDING THE INFORMATION NEEDED TO ADJUST THE BYPASS VALVE TO OBTAIN A NOZZLE PRESSURE AT WHICH THE SLURRY WILL BE DISPENSED AT THE PROPER RATE; AND MEANS CONNECTING SAID SPRAY NOZZLE TO SAID MOBILE CHASSIS.