Hydraulic and earth engineering – Fluid control – treatment – or containment – Flow control
Patent
1986-07-10
1987-08-11
Corbin, David H.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Flow control
251147, 405 40, E02B 720
Patent
active
046858288
ABSTRACT:
An irrigation ditch gate, comprising port means for defining a passage for conduction of water, configured for mounting in a wall of an irrigation ditch and attached to a frame. A plate means comprising a generally circular plate is pivotally mounted on the port means, for being pivoted transverse to the passage, between a closed position to cover the passage and prevent the flow of water therethrough, and an open position to substantially uncover the passage to permit the flow of water therethrough. A handle lever moves the gate between the closed and open positions being pivotally attached on a first end to the plate. A moving fulcrum is provided for the handle by a second lever having one end pivotally attached to the frame and a second end pivotally attached to the handle. A retention means exerts a retaining force on the handle so that the plate is urged into close wiping engagement with the port means. The port means can be provided with a plurality of means for securing to the sidewall of an irrigation ditch.
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