Controllable automatic shutoff dispensing nozzle valve

Claim 1

IN AN AUTOMATIC SHUT-OFF FLUID DISPENSING NOZZLE COMPRISING A MAIN BODY MEMBER, A NOZZLE ATTACHED TO SAID BODY MEMBER, A VALVE MECHANISM FOR CONTROLLING THE FLOW OF FLUID THROUGH THE NOZZLE, MEANS FORMING A CHAMBER INN THE BODY MEMBER, A DIAPHRAGM N SAID CHAMBER, SAID VALVE MECHANISM INCLUDING A MAIN VALVE HAVING A VALVE OPENING ON THE DISCHARGE SIDE THEREOFF CONSTRICTED OPENING DIRRECTIONN OF FLOW THERETHROUGH, SAID CONSTRICTED OPENING AND SAID CHAMBBER BEING IN COMMUNICATION WITH ONE ANOTHER, AN ORIFICE IN AND DISPOSED ADJACENT TO THE DISCHARGE END OF THE NOZZLE, A CONDUIT LEADING FROM SAID ORIFFICE AND COMMUNICATING WITH SAID CHAMBER WHEREBY AIR IS DRAWN FROM SAID ORIFICE THROUGH THE DIAPHRAGM CHAMBER INTO SAID CONSTRICTED VALVE OPENING WHEN FLUIDD FLOWS THROUGH THE LATTER AND SAID ORIFICE IS EXPOSED, AIR BEING WITHDRAWN FROM THE DIAPHRAM CHAMBER WHEN SAID ORIFICE IS CLOSED BY SUBMERGENCE IN DISPENSED LIQUID OR WHEN SAID CONDUIT IS CLOSED TO THE PASSAGE OF AIR DIAPHRAM TO DEFLECT THE PRESSURE DIFFERENTIAL ACTS ON SAID DIAPHRAM TO DEFLECT THE SAME, SPRING MEANS CONSTANTLY URGING SAID MAIN VALVE TO THE CLOSED POSITION, A PLUNGER MOUNTED IN THE BODY MEMBER ADJACENT TO THE DIAPHRAMG TO MVE TOWARD AND AWAY FROM THE DIAPHRAM, A HAND LEVER FOR OPERATING THE MAIN VALVE, SAID HAND LEVER HAVING A FULCLRUM CARRIED BY SAID PLUNGER, SAID PLUNGER BEING MOVABLE BETWEEN A SECURED MAIN VALVE AND A RELEASED POSITION INN WHICH THE HAND MAIN VALVE AND A RELEASED POSIT IONN IN WHICH THE HAND LEVER IS RENDERED INOPERATIVE TO OPEN THE MAIN VALVE AND RELEASABLE LOCKING MEANS FOR RETAINING SAID PLUNGER IN THE FIXED POSITION WHEN SAID ORIFICE IS CLEAR OF SUBMERGENCE AND SAID AUXILIARY VALVE IS OPEN, A HOUSING MEMBER ATTACHED TO SAID BODY MEMBER AND HAVING A LOWER WALL WHICH FORMS THE TOP WALL OF SAID CHAMBER, SAID HOUSING MEMBER HAVING A CAVITY IN THE UPPER PORTION THEREOF ABOVE SAID WALL, SAID HOUSING MEMBER HAVING AN OPENING WHICH EXTENDS FROM THE OUTER SURFACE OF SAID HOUSING MEMBER TO SAID CAVITY, A HOLLOW CYLINDRICAL VALVE CHAMBER POSITIONED WITHIN SAID OPENING, SAID VALVE CHAMBER HAVING A FIRST PORT AND A SECOND PORT THEREIN, SAID CONDUIT INCLUDING A FIRST PASSAGEWAY EXTENDING THROUGH SAID HOUSING MEMBER AND COMMUNICATING WITH THE FFIRST PORT OF SAID VALVE CHAMBER, A SECOND PASSAGEWAY IN SAID HOUSING EXTENDING FROM SAID SECOND PORT OF SAID VALVE CHAMBER TO SAID DIAPHRAGM CHAMBER, A SHIFTABLE AUXILIARY VALVE MEMBER IN SAID VALVE CHAMBER NORMALLY URGED BY THE A SPRING AGAINST A SHOULDER SURROUNDING AN OPENINT AT THE END OF SAID CHAMBER ADJACENT SAID CAVITY, SAID VALVE MEMBER HAVING A NOSE PORTION EXTENDING THROUGH SAID OPENING INTO SAID CAVITY, SAID AUXILIARY VALVE MEMBER BEING NORMALLY BIASED BY SAID SPRING TO A POSITION IN WHICH IT CLOSES NEITHER OF SAID PORTS WHEREBY AIR MAY FLOW FROM ONE PASSAGEWAY TO THE OTHER THROUGH SAID HOLLOW CYLINDRICAL VALVE CHAMBER, SAID AUXILIARY VALVE MEMBER BEING SHIFTABLE TO A CLOSED POSITION IN WHICH IT CLOSES AT LEAST ONE OF SAID PORTS AND BLOCKS FLOW OF AIR THROUGH SAID VALVE CHAMBER, SAID NOSE PORTION EXTENDING INTO SAID CAVITY A DISTANCE GREATER THAN THE DISTANCE THE AUXILIARY VALVE MEMBER MUST MOVE FROM ITS NORMAL POSIT ION TO THE POSITION AT WHICH IT CLOSES AT LEAST ONE OF SAID PORTS, AND TIME CONTROL MECHANISM FOR EFFECTING SHIFTING OF SAID AUXILIARY VALVE MEMBER TO CLOSED POSITION AFTER A LAPSE OF A PREDETERMINED AMOUNT OF TIME AND BEFORE SAID NOZZLE ORIFICE IS SUBMERGED THEREBY CUTTING OFF THE FLOW OF AIR THROUGH SAID CONDUIT INTO SAID DIAHPHRAGM CHAMBER AND RELEASING SAID LOCKING MEANS, WHERBY SAID MAIN VALVE IS BIASED BY SAID SPRING TO THE CLOSED POSITION, SAID MECHANISM INCLUDING A ROTARY SHAFT AND A CAMM CARRIED THEREBY AND MOVED INTO ENGAGEMENT WITH SAID AUXILIARY VALVE MEMBER NOSE PORTION TO SHIFT THE AUXILIARRY VALVE MEMBER TO SAID CLOSED PORTION.