Valve mechanism for cream dispensers

Claim 1

VALVE MECHANISM FOR DISPENSING CREAM FROM A SUPPLY CHAMBER OF A CONTAINER, SAID VALVE MECHANISM BEING MOVABLE IN A CYCLE IN WHICH CREAM FROM THE SUPPLY CHAMBER IS DISPENSED IN A AMOUNT OF PREDETERMINED QUANTITY, SAID MECHANISM BEING ADJUSTABLE TO VARY, AT WILL, THE QUANTITY OF CREAM IN EACH AMOUNT THEREOF DISPENSED, SAID VALVE MECHANISM INCLUDING A SUMP MEMBER PROVIDING A SUMP CHAMBER FOR THE RECEPTION OF CREAM FROM THE SUPPLY CHAMBER, A TUBULAR GUIDE DEPENDING FROM SAID SUMP MEMBER AND OPENING INTO THE SUMP CHAMBER THEREIN A LIFT VALVE MOVABLE UPWARDLY FROM A DEPRESSED POSITION AND BACK AGAIN, SAID LIFT VALVE INCLUDING A STEM AND A HEAD, THE STEM BEING SLIDABLY RECEIVED WITHIN SAID TUBULAR GUIDE, SAID STEM BEING FORMED WITH A LONGITUDINAL BORE OPEN AT ITS LOWER END FOR THE DISCHARGE OF CREAM THEREFROM AND FORMED WITH AN INGRESS PORT IN THE SIDE THEREOF LEADING INTO SAID BORE, SAID TUBULAR GUIDE SERVING TO CLOSE SAID INGRESS PORT IN THE VALVE STEM IN DEPRESSED DISPOSITION OF THE LIFT VALVE, A VALVE PLATE CAPPING THE SUMP MEMBER AND HAVING AN INLET PORT LEADING FROM THE CREAM SUPPLY CHAMBER INTO SAID SUMP CHAMBER, THE HEAD OF THE LIFT VALVE BEING ADAPTED TO MOVE FROM THE SUMP CHAMBER INTO SAID INLET PORT OF THE SAID VALVE PLATE OBSTRUCTING THE SAME, AT LEAST INITIALLY UPON THE LIFTING OF SAID VALVE, THE INGRESS PORT IN THE VALVE STEM BEING ADAPTED TO CLEAR THE VALVE GUIDE AND OPEN INTO THE SUMP CHAMBER UPON THE LIFTING OF THE VALVE SUFFICIENTLY TO ELEVATE ITS HEAD INTO VALVE OBSTRUCTING RELATIONSHIP WITH THE INLET PORT OF THE VALVE PLATE, LOW-LIMIT STOP MEANS FOR ARRESTING THE DESCENT OF THE VALVE AT THE DEPRESSED DISPOSITION THEREOF WHEREIN ITS INGRESS PORT IS CLOSED BY SAID TUBULAR GUIDE, AND ADJUSTABLE HIGH-LIMIT STOP MEANS FOR VARIABLE ARRESTING THE ASCENT OF THE VALVE, AT LEAST INITIALLY IN ITS ASCENT, AT DISPOSITIONS THEREOF WITH ITS HEAD OBSTRUCTING THE INLET PORT OF THE VALVE PLATE AND WITH A GREATER OR LESSER AREA OF THE INGRESS PORT OF THE VALVE STEM OPEN TO THE SUMP CHAMBER, SAID HEAD OF SAID LIFT VALVE BEING OF GREATER DIAMETER THAN THE STEM THEREOF AND ADAPTED TO PASS UPWARDLY THROUGH THE INLET PORT OF THE VALVE PLATE AND THEREBEYOND ON THE ASCENT OF THE LIFT VALVE, THEREBY OPENING THE CREAM SUPPLY CHAMBER TO THE DISCHARGE BORE OF THE VALVE STEM VIA THE SUMP CHAMBER AND AN INGRESS PORT IN SAID VALVE STEM.