Metering device for dispensing identical quantities of liquids from liquid containers

Claim 1

A TUBULAR DISPENSING DEVICE FOR INSERTION INTO THE OPENING OF A LIQUID CONTAINER FOR DISPENSING EQUAL VOLUMES OF LIQUID FROM SAID CONTAINER, SAID TUBULAR DEVICE BEING CLOSED AT ITS INNER END AND HAVING A PARTITION EXTENDING TRANSVERSELY BETWEEN OPPOSITE SIDES OF SAID TUBULAR DEVICE AND AXIALLY FROM ITS OUTER END WITH THE INNER END OF THE PARTITION SPACED FROM THE CLOSED INNER END OF THE TUBULAR DEVICE, SAID DEVICE BEING OPEN AT THE OUTER END ON ONE SIDE OF SAID PARTITION TO FORM A DISCHARGE PASSAGE AND CLOSED BY A TRANSVERSE WALL ON THE OTHER SIDE OF THE PARTITION TO FORM A CLOSED CHAMBER INWARDLY OF THE OUTER END, THE TUBULAR WALL OF SAID CLOSED CHAMBER HAVING AXIALLY SPACED OPENINGS INWARDLY OF SAID TRANSVERSE WALL TO FORM A METERING CHAMBER BETWEEN THE INNER ONE OF SAID OPENINGS AND SAID TRANSVERSE WALL HAVING A VOLUME EQUAL TO THE QUANTITY OF LIQUID TO BE DISPENSED, SAID PARTITION BEING SPACED FROM THE CLOSED END OF SAID DEVICE SUFFICIENTLY TO DEFINE A RECEPTACE BEYOND SAID PARTITION OF THE VOLUME AT LEAST AS GREAT AS THE VOLUME OF SAID METERING CHAMBERM SAID PARTITION EXTENDING AXIALLY INWARDLY BEYOND SAID INNER OPENING A DISTANCE SUFFICIENTLY TO FORM COLLECTING CHAMBER IN SAID CLOSED CHAMBER INWARDLY OF SAID INNER OPENING OF A VOLUME TO RECEIVE FREE LIQUID WHEN SAID CONTAINER IS INVERTED AND THE LIQUID THEREIN FILLS SAID METERING CHAMBER AND EXERTS PRESSURE TO RAISE THE LEVEL OF AND LIQUID ABOVE SAID INNER OPENING, SO THAT WHEN SAID CONTAINER IS TILTED WITH ITS DISCHARGE PASSAGE ON THE LOWER SIDE, LIQUID WILL FLOW FROM SAID RECEPTACLE AND THE LIQUID WILL FLOW INTO SAID METERING CHAMBER AS SAID CONTAINER IS INVERTED AND BEYOND SAID INNER OPENING UNTIL THE WEIGHT OF THE LIQUID AND THE REDUCED PRESSURE OF THE AIR ABOVE THE LIQUID ARE IN EQUILIBRIUM