MAYDAY SAFETY SHUTOFF SYSTEM RESPONSIVE TO ERRANT TOWERS OF AN AUTOMATIC IRRIGATION SYSTEM

摘要

A safety control system for shutting down a self-propelled sprinkling apparatus when any of the towers, and thus the pipeline supported thereby, deviates from a substantially straight line relationship with the rest of the towers. Safety control means on each tower senses when the tower is leading or lagging the adjacent towers by more than a preselected distance, and in turn actuates means which terminates the flow of water to the pipeline and shuts down the entire sprinkling apparatus. Actuation is accomplished via the introduction of pressure, or by a drop in pre-established pressure.