Lindsay Manufacturing Company

Kenneth E Arndt

David A Siekmeier

Lonnie E Otto, Jr

This is concerned with a water drive system for a center pivot irrigation system in which a string of pipe pivots in a circle or oscillates about a center pivot or upright with the pipe supported on towers at intervals and each tower being independently driven by a power mechanism which is operated by the pressure of the water in the string of pipe. It includes a mechanism to prevent one or more towers from rolling ahead on a downhill slope, a diaphragm valve arrangement for controlling the cycling of the drive, and an enlarged bellows or bladder for operating the water drive mechanism.

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Columbus, NE, United States of America

Kenneth E Arndt