Control valve for sprayers

Claim 1

IN A SPRAYER OF THE TYPE HAVING A CONTAINER OF LIQUID UNDER PRESSURE TO BE SPRAYED, A FLEXIBLE CONDUIT LEADING FROM THE CONTAINER AND COMMUNICATING WITH THE INTERIOR THEREOF FOR PASSAGE THERETHROUGH OF THE LIQUID UNDER PRESSURE, AND A TUBE EXTENSION EXTENDING FROM THE CONDUIT AND HAVING A NOZZLE CONTROLLING THE SPRAY PATTERN OF THE LIQUID AT THE DISCHARGE END THEREOF, AND A SPRAY CONTROL VALVE INTERPOSED BETWEEN THE CONDUIT AND THE TUBE EXTENSION, AN IMPROVED SPRAY CONTROL VALVE COMPRISING: AN ADAPTER HAVING A LONGITUDINALLY EXTENDING CENTRAL BORE, A STEM EXTENDING THROUGH THE ADAPTER BORE BEING COUPLED WITH THE FLEXIBLE CONDUIT AND HAVING A LONGITUDINALLY EXTENDING PASSAGEWAY COMMUNICATING WITH THE FLEXIBLE CONDUIT AND INTERIOR OF THE CONTAINER, A FERRULE FITTING EXTENDING FROM THE TUBE EXTENSION AND HAVING A CENTRAL PASSAGE FOR COMMUNICATING WITH THE TUBE EXTENSION AND RECEIVING THE FORWARD END OF THE STEM, SAID ADAPTER BEING PROVIDED WITH EXTERNAL THREADS AND THE FERRULE FITTING BEING PROVIDED WITH INTENAL THREADS MESHED WITH THE EXTERNAL THREADS OF THE ADAPTER, AND LATERALLY EXTENDING FINGER ENGAGING WING ELEMENTS ON THE EXTERIOR OF THE FERRULE FITTING TO PROVIDE A WING-NUT TO FACILITATE MANUAL ASSEMBLY AND DISASSEMBLY OF THE FERRULE FITTING, SAID FERRULE FITTING BEING COUPLED DIRECTLY WITH THE ADAPTER WHEREBY THE STEM IS ADAPTED TO BE SHIFTED BETWEEN A REAR VALVE OPEN POSITION AT WHICH THE LIQUID UNDER PRESSURE IS PERMITTED TO PASS FROM THE CONDUIT THROUGH THE CONTROL VALVE TO THE TUBE EXTENSION AND FORWARD VALVE CLOSED POSITION AT WHICH THE FORWARD END OF THE STEM COOPERATES WITH SURFACES OF THE FERRULE FITTING TO STOP PASSAGE OF THE LIQUID UNDER PRESSURE THROUGH THE CONTROL VALVE FROM THE CONDUIT TO THE TUBE EXTENSION, A SPRING BIASED BETWEEN THE STEM AND THE ADAPTER WHEREBY THE STEM IS URGED TOWARDS THE VALVE CLOSED POSITION, AND MANUAL MEANS FOR SHIFTING THE STEM TO A RETRACTED POSITION AT WHICH THE VALVE IS OPEN.