A New or Improved Method of Restricting the Quantity of Water Delivered for Irrigation and like purposes and Improvements in or connected with Apparatus therefor.

摘要

15,615. Harvey, W. B., and Stoddard, A. A. July 4. Irrigation, agricultural.-Relates to forms of discharge orifices between a stream and a lateral irrigation channel, by which a uniform flow is obtained when the difference between the waterlevels in the stream and channel is small. One form is shown in Figs. 1 and 2, and another in Figs. 3 and 4. The stream-level is shown by the line C, and the channel-level by the line E-D. Vertical grooves J allow air to enter at the sides.