Beverage dispenser

Claim 1

IN A BEVERAGE DISPENSER CONSISTING OF A LIQUID CONTAINER HAVING AN INTEGRAL, UPSTANDING NECK WITH AN OUTLET THEREIN FOR SAID CONTAINER, AND A LIQUID DISPENSING HEAD DETACHABLY SECURED TO THE SAID NECK, SAID DISPENSING HEAD COMPRISING A TAP AND MEANS FOR FEEDING GAS UNDER PRESSURE INTO SAID CONTAINER; THE IMPROVEMENT COMPRISING AN INSERT EXTENDING FROM SAID HEAD INTO SAID OUTLET AND HAVING A PASSAGE THERETHROUGH COMMUNICATING WITH SAID TAP AND WITH THE INTERIOR OF SAID CONTAINER, SAID INSERT ALSO HAVING A PASSAGE THERETHROUGH COMMUNICATING WITH SAID PRESSURE MEANS AND THE INTERIOR OF SAID CONTAINER; SEALING MEANS ENCIRCLING THE SIDE WALL OF THE SAID INSERT AND EFFECTING A SEAL BETWEEN THE SAID INSERT AND THE INNER WALL OF THE SAID NECK, AND MEANS CARRIED BY SAID HEAD FOR DETACHABLY CONNECTING THE SAID HEAD TO THE SAID NECK, THE SAID CONNECTING MEANS CONSISTING OF A RING FIXEDLY ATTACHED TO SAID DISPENSING HEAD ENCIRCLING THE SAID NECK AND HAVING SPACED APERTURES THERETHROUGH, LOCKING MEMBERS RECIPROCABLE IN THE SAID APERTURES INTO AND OUT OF LOCKING ENGAGEMENT WITH THE SAID NECK, AND A CAM RING ROTATABLE AROUND THE FIRST-MENTIONED RING, THE SAID CAM RING HAVING SPACED RECESSES THEREIN WHICH ARE REGISTERABLE WITH THE SAID APERTURES AND HAVING INWARDLY DISPOSED CAM SURFACES INTERMEDIATE THE SAID RECESSES AND ENGAGEABLE WITH THE SAID LOCKING MEMBERS UPON ROTATION OF THE CAM RING TO PRESS THE SAID LOCKING MEMBERS INTO LOCKING ENGAGEMENT WITH THE SAID NECK.