Abstract: A convertible furniture unit includes a tip-up bed (11) whose frame (12) is movable from a horizontal to a vertical position in a wall unit (10) around a torsion bar pivot (20). Connected to the frame (12) is an auxiliary furniture piece (30) such as a table (32) or sofa which is kept horizontal by a parallelogram linkage. As the bed unit (11) is moved from the vertical to horizontal position pivot point (34) attached to the bed frame moves forwardly and downwardly collapsing legs (37,38) with respect to fixed leg (35) and moving legs (37,38) outwardly from its point of connection with pivot connector (50). The table then nests under the bed when the bed is in the "down" position. The pivot connector (50) includes a floor connector (51), a U-shaped post member (57-59) and a hook member (55) which holds the post member on the floor connection.

Abstract: The following disclosure teaches ways and means for clarifying raw sewage and thickening secondary sewage sludge. The disclosed apparatus comprises a tank having upper and lower feedwells disposed therein. Raw sewage is introduced into the lower feedwell and flows into the lower part of the tank to be clarified therein, and secondary sludge is aerated and introduced into the upper feedwell so that it flows therefrom and thickens in the upper part of the tank by flotation type thickening.

Abstract: Apparatus for countercurrent washing of finely divided solids comprising a vertical tank divided by transverse plates into a plurality of superimposed compartments, a single opening in each plate, a rake in each compartment for scraping settled solids on the plate to the opening, an inlet in the uppermost compartment for introducing solids, an outlet in the bottom of the lowermost compartment for discharge of settled solids, a wash liquor inlet in a lower zone of the lowermost compartment, a wash liquor outlet in the uppermost compartment for liquid discharge and valves for regulating the rate of introduction of both solids at the top of the tank and wash liquor at the bottom. Tubular components may depend from the edge of the single opening in each plate.