AUTOMATIC PIPELINE STRAIGHTENER AND SPRINKLER HEAD LEVELER FOR SPRINKLER IRRIGATION SYSTEMS

摘要

In a sprinkler irrigation system in which an elongated pipeline is supported above ground on longitudinally spaced wheels and sprinkler heads are mounted on the pipeline also at longitudinally spaced intervals, each of at least some of the wheels is provided with a separate arcuate rim segment aligned vertically with the sprinkler heads and capable of being collapsed under the weight of water in the pipeline.