Animal watering installation

Claim 1

AN ANIMAL WATERING INSTALLATION ADADPTED FOR OUTSIDE USE ABOVE THE SURFACE OF THE GROUND, THE LATTER HAVING A FREEZE LINE AT A DISTANCE BELOW THE SURFACE, SAID INSTALLATION COMPRISING: A SUPPORT EXTENDING ABOVE THE SURFACE OF THE GROUND; A RECEPTACLE; MEANS MOUNTING SAID RECEPTABLE ON THE SUPPORT FOR SHIFTING BETWEEN A NON-FILLING DRAINING POSITION AND A FILLING POSITION; AN INLET PORT IN THE RECEPTACLE; AN INSULATED INLET CONDUIT COMMUNICATING WITH SAID INLET PORT AND EXTENDING BELOW THE FREEZE LINE FOR COUPLING TO A PRESSURIZED WATER SUPPLY; A DRAIN IN THE RECEPTACLE; AN INSULATED OUTLET CONDUIT COUPLED TO SAID DRAIN AND EXTENDING BELOW THE FREEZE LINE; A PIPE CONNECTED TO SAID INLET CONDUIT BELOW THE FREEZING LINE AND EXTENDING BELOW THE LATTER; VALVE MEANS FOR SAID INLET CONDUIT WITHIN THE PIPE BELOW SAID PIPE AND INLET CONDUIT CONNECTION AND HAVING OPERATING POSITIONS FOR OPENING AND CLOSING SAID INLET CONDUIT TO THE PASSAGE OF WATER THROUGH SAID PIPE; AND PRESSURE-RESPONSIVE MECHANISM INTERCOUPLING SAID VALVE AND SAID MEANS MOUNTING SAID RECEPTACLE TO NORMALLY YIELDABLY DISPOSE THE RECEPTACLE IN SAID NON-FILLING DRAINING POSITION WHEN SAID VALVE IS IN SAID CLOSED POSITION AND OPERABLE TO OPEN SAID VALVE WHEN SAID RECEPTACLE IS SHIFTED TO SAID FILLING POSITION IN RESPONSE TO A PREDETERMINED PRESSURE EXERTED THEREON, WHEREBY WATER WILL FLOW FROM THE PIPE TO SAID RECEPTACLE UNTIL THE PRESSURE IS REMOVED FROM THE RECEPTACLE WHEREUPON SAID VALVE CLOSES AND EXCESS WATER IN THE INLET CONDUIT AND RECEPTACLE GRAVITATES BELOW THE FREEZING LINE THROUGH SAID PIPE AND OUTLET CONDUIT, RESPECTIVELY.