Abstract: A hurter for use in conjunction with a wicket dam prop at a downstream side f a wicket, the hurter comprising a block having therein on an upper surface thereof a bearing for receiving a free end of the prop, a ramp disposed downstream of the block on a base plate and inclined from the base plate to a top surface of the block and adapted to support the free end of the prop, a first trough wall on a first side of the ramp and the block hingedly connected to the base plate, a cover portion of the first trough wall extending over a first portion of the block, and a second trough wall on a second side of the ramp and the block hingedly connected to the base plate, a cover portion of the second trough wall extending over a second portion of the block, the first and second trough wall cover portions being engageable by the prop as the prop moves up the ramp, to cause the first and second trough walls to pivot away from each other to permit the prop to pass between the cover portions and into the bearing.

Abstract: The invention is directed to a breakaway prop for a wicket employing a slble and rotatable prop bearing which is secured to the prop by shear pins. Upon application of sufficient force, the shear pins release the prop bearing and allow the wicket to drop without damaging the prop.

Abstract: In one embodiment, the invention is directed to a hydraulic lifting module hich is removable as a unit from a wicket dam. A hydraulic cylinder is pivotably mounted about an axis in the frame and extends outwardly of an apertured cover between extreme positions. A slidable shield is secured and is pivotable with a portion of the cylinder extending out of the cover for closing the aperture and the extreme positions of the cylinder. A flexible boot interior of the frame renders the housing water and silt resistant.