Abstract: A portable collapsible livestock feeder comprising a rear panel hingedly attached to a lower container, and a restrainer fibrous feed attached to the rear panel. At least one hinge attaches the rear panel to the lower container. The rear panel is adjacent the lower container in a closed position, and is angularly related to the lower container in an open position. The feeder may be maintained in the open position. The feeder is maintained in the closed position by two L-shaped brackets which are rotatably mounted to the rear panel and which have a locking and a hanging position. In the locking position, the L-shaped brackets engage the lower container when the feeder is in the closed position. In the hanging position, the L-shaped brackets provide for hanging the feeder when the feeder is in the open position. In the preferred embodiment, the rear panel comprises an upper container.

Abstract: A selectively removable sludge filtration system that provides for retrofit into a container and separation of the sludge solids from the sludge liquids therein. A pair of spaced vertically oriented filter assemblies each define a filtrate cavity therein and are connected by separator plates. The filter assemblies permit the flow of sludge liquids into the filtrate cavity, but not sludge solids. A set of fasteners hold the filter assemblies in the container and bias the filter assemblies against the container bottom. The fasteners may be released to provide for removal of the sludge filtration system from the container. A fluid communication passageway directs filtrate from the filtrate cavity to a position exterior of the container. Functionally applying this sludge filtration system provides a method of retrofitting a container with a sludge filtration system and removing filtrate from a sludge in the container.