Abstract: A system for removing oil from an oil-water dispersion such as in bilge water to form an effluent of high purity. At least one container for a coalescing medium (e.g., resin particles) is positioned in the interior of an upright reservoir wall and includes a liquid permeable lower wall in a frusto-conical shape in contact with water in the reservoir. The dispersion is directed through the coalescing medium wherein small oil droplets coalesce into larger ones which float to the surface of the aqueous reservoir to form a floating oil layer on the water. Purified water flows out from the lower portion of the reservoir in a radially outward direction from the coalescing medium container thereby reducing the water flow rate. Prior to flow through the coalescing medium, the dispersion is optionally passed into a holding tank wherein material heavier than water is settled for periodic removal of heavy contaminants. Pitch accommodating means is provided to adapt the system to ship board use.

Abstract: A method for coalescing oil from an oil in water dispersion by passing the dispersion through a granular bed of brominated monoolefin resin.

Abstract: An internal combustion engine employing a rotary valve having a single passage which is adapted to provide both intake and exhaust valving functions. The valve is formed with a circular outer periphery and is mounted for rotation about a transverse axis between intake and exhaust ports which are provided at the head end of the combustion chamber. The passage is defined by a concaval recess which extends across a chord of the valve periphery. Means is provided for rotating the valve in timed relationship with movement of a piston within the chamber so that the passage moves into simultaneous register with the intake port and combustion chamber during the intake phase, and into simultaneous register with the exhaust port and combustion chamber during the exhaust phase.