Abstract: A passive anti-clogging device for feeding water into marine jet pumps, which displaces the laminar flow around the trailing surfaces of the intake port, such that foreign debris and grass are precluded from clogging the intake to the jet pump. The primary component of the invention comprises an exclusion plate that is placed in, or immediately below the intake port, and affixed to the breadth of, or becoming a part of, the trailing edge of the intake port, leaving an opening, or slot, between the exclusion plate and ride plate, or bottom of the vessel, which, when at rest, allows the passage of water only from its anterior and lateral extents, thereby excluding the flow of water into the device from directly below or behind the plate. The edge of the exclusion plate angles or curves from a forward central point or apex to a back point at the trailing edge of the intake port, providing a fair surface to resist laminar attachment of debris, marine vegetation or other debris.

Abstract: A bucket auger for excavating holes for planting trees is disclosed which includes a trapezoidal cutting frame having teeth secured to the side and bottom. A central vertical shaft adapted to connect to a rotational drive mechanism is secured through upper and lower members of the frame. Two half frusto conical bucket members are pivotally suspended from the upper cross member of the cutting frame by arms such that the weight of the bucket members plus the weight of earth contained within force the bucket to remain closed during lifting of the bucket auger out of the excavation. Lifting flanges are provided for attaching lifting/opening cables to force the two bucket members open to release the earth contained therein.