Automatic swimming pool chlorinator

Claim 1

A CHLORINATOR FOR USE IN FURNISHING A CHLORINE SOLUTION AUTOMATICALLY TO SWIMMING POOLS THAT COMPRISES IN COMBINATION A FILTER DEVICE AND A SUCTION COUPLING, THE SUCTION COUPLING HAVING MEANS FOR DETACHABLE CONNECTION TO A SOURCE OF PRESSURIZED WATER, THE FILTER DEVICE EMBODYING AN UPSTANDING CYLINDRICAL SHELL OPEN AT ITS TOP AND PROVIDED WITH A FLARING BOTTOM FOR RESTING ENGAGEMENT ADJACENT TO THE EDGE OF A SWIMMING POOL, A CLOSURE COVER HINGEDLY CONNECTED TO THE UPPER END OF THE SHELL TO CLOSE THE OPEN END, LATCH MEANS FOR HOLDING THE COVER IN THE CLOSED POSITION, THE SHELL HAVING A DOWNWARDLY DIRECTED CONICAL BOTTOM THAT IS PROVIDED WITH A CENTRALLY ARRANGED OUTLET COUPLING, A FILTER BASKET IN THE SHELL AND ADAPTED TO BE SUPPORTED UPON THE UPPER MARGINAL EDGE OF THE SHELL, THE BASKET HAVING IMPERFORATE TAPERING SIDE WALLS AND A PERFORATED BOTTOM, FILTER MEANS SUPPORTED UPON THE PERFORATED BOTTOM, THE SAID COVER BEING PROVIDED CENTRALLY THEREOF WITH A DOWNARDLY DIRECTED SPRAY NOZZLE THAT IS AXIAL TO THE BASKET, A RELATIVELY LARGE FLEXIBLE SUCTION TUBE THAT IS CONNECTED TO THE OUTLET COUPLING OF THE CONICAL BOTTOM AND ALSO TO THE SUCTION COUPLING, THE FLOW OF WATER THROUGH THE SUCTION COUPLING CREATING A SUCTION TO THE OUTLET COUPLING AND A RELATIVELY SLENDER FLEXIBLE FEED TUBE THAT IS CONNECTED TO THE SUCTION COUPLING TO EXTEND UPWARDLY THROUGH THE FIRST-NAMED TUBE AND INTO THE SHELL ABOVE THE CONICAL BOTTOM, THE LAST-NAMED TUBE BEING EXTENDED THROUGH A SIDE WALL OF THE SHELL FOR CONNECTION WITH A CUTOFF VALVE, A FEED TUBE CONNECTED TO THE VALVE AND TO THE SPRAY NOZZLE, THE FEED TUBE CONNECTING WATER UNDER PRESSURE FROM THE SUCTION COUPLING TO THE SPRAY NOZZLE FOR CONTINUOUSLY SPRAYING WATER UPON A MASS OF GRANULES SUPPORTED IN THE BASKET TO DISSOLVE THE GRANULES AND FEEDING A SOLUTION OF CHLORINE THROUGH THE PERFORATED BOTTOM TO BE WITHDRAWN BY THE SUCTION ACTION OF THE SUCTION TUBE.