Water feed control valve for watering troughs

Claim 1

A VALVE CONSTRUCTION, COMPRISING A HOUSING EMBODYING TWO SEPARABLE PARTS, MEANSE DETACHABLY COUPLING SAID PARTS TOGETHER, SAID PARTS WHEN COUPLED TOGETHER FORMING AN ENCLOSED AREA, ONE OF SAID PARTS HAVING A WALL WITH AN OUTWARDLY EXTENDING CENTRAL DOME PORTION, TUBULAR MEANS EXTENDING INTO THE CENTER OF THE DOMED PORTION FROM THE WALL THEREOF AND PROVIDING A LIQUID INLET AND AN INWARDLY DIRECTED ANNULAR SEAT, A DIAPHRAGM WITHIN THE SAID ONE PART OF THE HOUSING AND EXTENDING ACROSS SAID DOMED PORTION AND FORMING THEREWITH A FIRST LIQUID CHAMBER, SAID DIAPHRAGM WHEN FLEXED IN ONE DIRECTION ENGAGING SAID SEAT TO SHUT OFF ADMISSION OF LIQUID INTO SAID CHAMBER, THE DIAPHRAGM HAVING A CENTRAL APERTURE ALIGNED WITH THE LIQUID INLET, MEANS FOR CONDUCTING LIQUID OUT OF SAID CHAMBER, A CYLINDRICAL SHELL POSITIONED IN SAID ENCLOSED AREA AND HAVING A WALL AT ONE END IN SPACED OPPOSED RELATION WITH THE SIDE OF THE DIAPHRAGM OPPOSITE THE FIRST CHAMBER AND SAID END WALL HAVING A PERIPHERAL AXIALLY DIRECTED FLANGE BEARING AGAINST THE DIAPHRAGM AND MAINTAINING THE WALL PORTION CIRCUMSCRIBED BY THE FLANGE SPACED FROM THE DIAPHRAGM TO FORM A SECOND LIQUID CHAMBER, SAID SHELL END WALL HAVING A CENTRAL OPENING THERETHROUGH DEFINED ON THE SIDE OF THE WALL REMOTE FROM THE SECOND CHAMBER BY A VALVE SEAT, THE OTHER END OF THE CYLINDRICAL SHELL BEING OPENED, MEANS CARRIED BY THE SHELL AND THE HOUSING PARTS FOR SECURING THE SHELL AND THE TWO PARTS OF THE HOUSING TOGETHER, A VALVE BUTTON ADAPTED FOR ENGAGEMENT WITH SAID VALVE SEAT, A BODY PIVOTALLY SUPPORTED WITHIN THE SHELL AND SUPPORTING THE VALVE BUTTON, A FLOAT ARM CONNECTED WITH SAID PIVOTED BODY AND EXTENDING OUTWARDLY THROUGH OPENINGS IN THE SHELL AND HOUSING, AND A FLOAT CARRIED BY SAID ARM EXTERIORLY OF THE HOUSING.