| 摘要 |
An apparatus for conveying rain water to a point remote from a building wall, comprising a frame mounted trough which is automatically lowered in response to movement of a piston within the frame. The piston moves in response to the weight of water accumulated within the frame, but is delayed until the rising water level actuates a trough release mechanism. Trough deployment is resisted by the lean of the stored trough and springs which are in tension for all trough positions. Water exits the frame through a cylinder port and drains from the remote end of the trough. A trough stabilizer collects a small amount of water at the end of the trough, the weight of the collected water keeping the trough down until water flow from the trough ceases. Small holes allow slow drainage from the trough stabilizer, which eventually allows the springs to return the trough to its upper position. Provisions are made allow accumulation of water to exit the frame without trough deployment.
|
