Adjustable arc spray nozzle

An adjustable orifice sprinkler spray nozzle assembly, comprising fixed housing means defining a passage having an inlet for attachment to a source of pressurized water and an outlet defined by an adjustable arcuate dispensing orifice;

• said adjustable arcuate dispensing orifice being formed by the interaction between a radially spiraled opening and an axially spiraled and sloped surface.

A sprinkler spray nozzle assembly comprising a fixed housing means defining a passage having an inlet for attachment to a source of pressurized water, said fixed housing having an outlet defined by an opening, and a flow control means cooperating with said outlet to establish a defined flow area, said flow control means being biased into said outlet so that said flow control means can be manually displaced upwardly to enlarge said defined flow area to release dirt particles during sprinkler operation, biasing means extend between the fixed housing means and flow control means to bias them together for sealing, said biasing means is a flexible washer.

An adjustable orifice sprinkler spray nozzle assembly, comprising fixed housing means defining a passage having an inlet for attachment to a source of pressurized water and an outlet defined by a spiraled edge having connected offset ends for dispensing water, a stationary round shaft in said housing means extends out of said outlet, a moveable member slideable and rotatable on said stationary round shaft, said moveable member having an axially spiraled sloped surface, said sloped surface extending into said outlet and cooperating with said spiraled edge for defining an adjustable arcuate dispensing orifice.

An adjustable orifice sprinkler spray nozzle assembly, comprising fixed housing means defining a passage having an inlet for attachment to a source of pressurized water and an outlet defined by a spiraled edge having connected offset ends for dispensing water, a moveable member having an axially spiraled sloped surface, said spiraled sloped surface extending into said spiraled edge of said outlet and cooperating with said spiraled edge for defining an adjustable arcuate dispensing orifice, said fixed housing means having an insert fixed therein to receive and properly position said moveable member with said fixed housing means, said insert having a shaft up through the outlet for mounting the moveable member.

An adjustable orifice sprinkler spray nozzle assembly comprising a fixed housing means defining a passage having an inlet for attachment to a source of pressurized water, said fixed housing having an outlet defined by a spiraled opening, an arcuate flow control means cooperating with said outlet to establish a defined arcuate flow area, means biasing said arcuate flow control means into said outlet so that said arcuate flow control means can be lifted upwardly to enlarge said defined flow area to release dirt particles during operation of the adjustable arcuate orifice sprinkler, said biasing means acting between the housing and said arcuate flow control means to hold them together during normal operation.