| 摘要 |
<p>An automatic reset reversing mechanism that resets a sprinkler to its preset cycling path or arc after it is moved to a position outside of the preset cycling arc. The automatic reset reversing mechanism utilizes a single clutch tooth on a dog drum that supports the reversing dogs. The reversing dogs are adjustable on the dog drum into any desired angular position in order to preset the arc of movement of the cycling sprinkler nozzle. The base of the sprinkler includes a notch that mates with the single clutch tooth during normal reversing movement of the cycling sprinkler nozzle. The dog drum is also movable upwardly to remove the single clutch tooth from the mating notch when the sprinkler nozzle is moved forceably outside of the preset cycling arc. Further movement of the sprinkler nozzle will replace the clutch tooth in the mating notch to re-establish the original preset sprinkler nozzle cycling arc.</p> |
