Part-circle sprinkler head with ball bearing swivel, adjustable cams for deflection spoon and oscillating spray deflector

Claim 1

A rotary sprinkler comprising an intermediate sleeve adapted for mounting on a standpipe or the like and having an annular shoulder formed thereon externally, a bearing ring surrounding the intermediate sleeve rotatably and forming therewith annular ball bearing compartments above and below said shoulder, plural ball bearing elements disposed loosely within said annular compartments, a sprinkler head carried by the bearing ring and rotating therewith as a unit upon said intermediate sleeve, said sprinkler head including a base portion secured to the bearing ring and an inclined sprinkler nozzle projecting from the base portion, a cam-support ring anchored to said standpipe and surrounding the bearing ring, circumferentially spaced engaging and retracting cams on said cam-support ring, a pivoted cam follower member on the sprinkler head extending into the planes of said cams, a pivoted deflector spoon on the nozzle forwardly of the pivoted follower, and a link interconnecting the deflector spoon and follower so that the same will move in unison when the follower engages said cams to move the spoon into the nozzle stream and retract it therefrom.