| 摘要 |
A simple, inexpensive sprinkler head is disclosed which may be adjusted to discharge a fluid in a full circular pattern of variable radius or in a variable size segment of such circular pattern of variable radius. The structure of the sprinkler head, which includes a short tubular body having an array of apertures through the wall thereof forming a closed elipse is described, together with a valve means for adjustment of the radius of the circular pattern of fluid discharge and a movable diaphragm means for adjustment of the size of the segment of the circular pattern in which fluid is discharged. The method of making such structure, including the fabrication of the tubular body of such structure in two parts by casting or molding techniques, is disclosed.
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