Liquid dispensing device and water sprinkler including same

Claim 1

A liquid dispensing device, comprising a body member having an inlet end connectable to a source of pressurized liquid and a nozzle carried by said body member and having an inlet communicating with said source of pressurized liquid, and an outlet throat for discharging the pressurized liquid therethrough in the form of a jet; said nozzle being rotatably mounted in said body member from an operative position wherein its inlet faces said source of pressurized liquid for discharging the pressurized liquid through its outlet throat, to a self-cleaning position wherein its outlet throat faces said source of pressurized liquid for flushing out clogging particles through the nozzle inlet; said nozzle inlet having a cross-sectional area of conical configuration decreasing in diameter from the inlet end of the body member to the outlet throat; said nozzle being split along a plane extending parallel to the jet discharged therefrom to define a first section and a second section; said first section being formed with a partial bore constituting a part of the cross- sectional area of said nozzle inlet and said nozzle throat; said second section being presettable to a plurality of different positions with respect to said first section and being formed with a complementary partial bore having recesses of differnt cross-sectional areas facing the partial bore of the first section and cooperable therewith to define a plurality of outlet throats of different cross-sectional areas according to the preset position of said second section with respect to said first section.