Abstract: In an adjustable valve means in a sprinkler device, a locking system that includes a breakaway wedging member connected to an adjustable two part sprinkler device and a wedging cavity positioned between the two parts of the sprinkler device to lock the two relatively moveable parts together.

Abstract: In an improved oscillating arm mechanism including a fluid engaging member for contact with a fluid sprinkler stream to move a distal portion of the member into and away from the fluid stream. The fluid engaging member includes at least two surfaces on its distal portion for moving the member into and away from the fluid stream. A walling surface is used to wall the member onto the stream and for driving the member further into the fluid stream. A repelling surface is used to provide a disengaging or repelling force to drive the member out of the stream and to begin another cycle of operation. Further, the fluid engaging member provides an exit channel means on the side opposite the two or more surfaces of the device to allow maximum fluid flow of the fluid stream to continue its original direction during engagement and disengagement of the member and the fluid stream.

Abstract: A one-piece flexible guard for excluding dirt and other foreign matter from the internal parts of a pop-up sprinkler. More particularly, a flexible circularly shaped piece of material which can be attached to the edge of the fixed housing assembly of a pop-up sprinkler. Said material having a circular hole in its center in which the pop-up sprinkler protrudes, said movable part being securely attached to said material along the edge of said circular hole. The guard being attached to the sprinkler in such a way so as to exclude foreign matter from the internal parts of the sprinkler while permitting the movable nozzle portion free vertical or horizontal movement. In an up position the outer perimeter of the guard forms a dam. The sprinkler also may provide fluid to wash the dirt from outside of the dam portion of the guard when the nozzle is in the extended or up position.