Automatic pipeline straightener and sprinkler head leveler for sprinkler irrigation systems

Claim 1

In a sprinkler irrigation system wherein an elongated pipeline mounts a plurality of longitudinally spaced sprinkler heads and is adapted to be supporteD above ground on a plurality of longitudinally spaced wheels, a pipeline support wheel comprising a. a major wheel rim portion defining a major segment of a circle, b. a wheel hub connected to the major wheel rim portion concentric therewith and arranged for connection to the pipeline with the chord of the major wheel rim portion disposed perpendicular to the vertical axis of the sprinkler heads, c. a minor wheel rim portion of resilient material defining a minor segment of the wheel circle, and d. connecting means interengaging the major and minor wheel rim portions for movement of said minor wheel rim portion resiliently toward and away from said chord, e. the minor wheel rim portion having a resilient resistance sufficient to support the pipeline when empty of water, whereby to complete the circle of the support wheel, but insufficient to support the pipeline when full of water, whereby to cause collapse of said minor wheel rim portion toward said chord.