Automatic filtration system

Claim 1

IN A FILTERING APPARATUS FOR REMOVING SOLID SOILS FROM A LIQUID, SAID APPARATUS COMPRISING: A RESERVOIR FOR SAID LIQUID; A MAIN FILLTER; A SECONDARY FILTER OF THE ROTATABLE CENTRIFUGE TYPE ADAPTED TO FUNCTION AS A SUB-FILTER AND MUCH STORAGE CONTAINER; AN AUTOMATIC FILTER POWDER DISPENSER MOUNTED ON SAID RESERVOIR AND HAVING A ROTATABLE FEED MECHANISM ADAPTED TO DISPENSE INTO SAID RESERVOIR A UNIFORM QUANTITY OF DRY FILTER POWDER FOR EACH ROTATION OF SAID FEEDING MECHANISM; CONDUIT MEANS INTERCONNECTING SAID MAIN FILTER, RESERVOIR AND SECONDARY FILTER; VALVE MEANS FOR CONTROLLIG THE DIRECTION OF FLOW THROUGH SAID CONDUIT MEANS; ELECTRICALLY RESPONSIVE VALVE OPERATOR MEANS, INCLUDING VALVE OPERATOR SWITH MEANS; A PUMP FOR FLOWING SAID LIQUID UNDER PRESSURE THROUGH SAID CONDUIT MEANS, MAIN FILTER, RESERVOIR AND SECONDARY FILTER; PRESSURE SENSITIVE SWITCH MEANS IN THE CONDUIT MEANS CONNECTING SAID RESERVOIR TO SAID MAIN FILTER AND ADAPTED TO BE ACTUATED WHEN THE FLOW PRESSURE RISES ABOVE A SELECTED VALVE; RELAY CONTROL MEANS CONNECTED ELECTRICALLY TO SAID PRESSURESENSITIVE SWITCH MEANS AND TO SAID VALVE OPERATOR MEANS AND ACTUABLE IN RESPONSE TO ACTUATION OF SAID PRESSURE