Abstract: A rotating piston engine for use as a combustion engine, air or gas compressor, water or hydraulic pump or motor, and the like. A stator supports a rotor which is bored to receive a double acting piston journalled on the crank of an eccentric mounted crankshaft. The crankshaft penetrates the rotor and cylinder wall in a manner to reduce the overall dimensions of the engine. Inlet and outlet ports are provided with a slide valving arrangement adapted for operation in four-stroke cycle combustion engines.

Abstract: An electrolytic cell for generating chlorine by decomposing brine has a housing defining therein closed anode and cathode chambers disposed side by side and communicating with each other through a vertical semi-permeable diaphragm. The anode and the cathode are spaced both horizontally and vertically with the anode either at the higher or the lower level and also at a higher or a lower level than the diaphragm.