Fluid sprinkling – spraying – and diffusing – Processes – Of discharge modification of flow varying
Patent
1978-12-12
1980-10-14
Saifer, Robert W.
Fluid sprinkling, spraying, and diffusing
Processes
Of discharge modification of flow varying
239177, 239DIG1, B05B 312
Patent
active
042276489
ABSTRACT:
A center pivot irrigation system has first and second auxiliary nozzles, or end guns, aternately operable for irrigating substantial portions of corner regions. The system includes a main pipeline sprinkler having main fluid discharges nozzles for irrigating a central, generally circular area, and the end guns are connected to the main pipeline sprinkler and draw irrigation fluid from it. When a corner is approached, one of the end guns is actuated while maintaining actuation of the main fluid discharge nozzles. A short period of time thereafter, the second end gun is actuated, and the pivotal rate of the main pipeline sprinkler is reduced to zero. At this time the main fluid discharge nozzles and the first end gun are closed, thereby providing all of the fluid from the main pipeline sprinkler to the operating end gun. After a predetermined time period, the second end gun is inactivated, the first gun and the main nozzles are reactivated, and the system is pivoted to a new orientation. After several such sequences and the corner has been passed, only the main nozzles are actuated until another corner is approached. Timers are provided for determining the duration of the periods during which the irrigation fluid is being discharged through the various nozzles, thereby to allow effective control of the amount of irrigation fluid discharged.
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Holloway Huland L.
Norum, Jr. Edward M.
Lockwood Corporation
Saifer Robert W.
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