| 摘要 |
Step-by-step rotary irrigator with a swinging nose and of the type provided with an inclined propelling tube rotatable on a substantially vertical column, a brake is provided for automatically braking the rotation of the rotatable tube in accordance with the water pressure. Provision is included for adjusting the period of swing of the swinging nose, and there is a double acting deflector for swinging the nose by interference with the water jet and for arresting its swing by interference with the water jet just before it collides against the propelling tube.
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