Multiple unit liquid dispenser

Claim 1

IN A DISPENSER FOR LIQUID, A UNITARY CASING HAVING AN INTEGRAL WALL INTERMEDIATE THE BOTTOM AND TOP TO DIVIDE THE CASING INTO AN UPPER RESERVOIR AND A LOWER METERING CHAMBER, SAID WALL COMPLETELY SEPARATING SAID RESERVOIR AND METERING CHAMBER FROM ONE ANOTHER VERTICALLY, A PORT IN SAID WALL FOR GRAVITY FLOW OF LIQUID FROM SAID RESERVOIR TO SAID METERING CHAMBER, VALVE MEANS OPERABLE IN SAID PORT, SAID METERING CHAMBER HAVING A SLANTING BOTTOM DEFINING A LOWERMOST PORTION, A DISCHARGE PORT IN SAID METERING CHAMBER AND POSITIONED ABOVE THE NORMAL LIQUID LEVEL OF THE METERING CHAMBER, A CONDUIT CONNECTED TO SAID DISCHARGE PORT AND EXTENDING TO THE LOWERMOST PART OF SAID METERING CHAMBER, AND A GAS INLET EXTENDING THROUGH THE BOTTOM OF SAID METERING CHAMBER AND TERMINATING ABOVE SAID DISCHARGE PORT.