GB402818A - Improvements in or relating to rotary engines, pumps and the like - Google Patents

Abstract

402,818. Rotary engines. DAW, A. W., and DAW, Z. W., 11, Queen Victoria Street, London. June 9, 1932, No. 16272. [Class 110 (ii).] A rotary internalcombustion or steam engine, or compressor comprises oscillating vanes 7 mounted on a shaft 9, co-operating with abutment partitions 6, 6a, to form working - chambers 24-27. The shaft 9 is connected to the main shaft 18 by cranks and connecting rods 14, 15, and a sliding crosslead 16 supported on pillars 19a. In the case of an engine two inlet and exhaust oscillating piston valves 28, 28a, each alternately connect inlets 22, 22a with passages 2a, 4a, or 3a, 5a, or similar passages, axially displaced, for exhaust are controlled by the two exhaust valves. For a combustion engine combustion chambers are placed in the casing walls in communication with the passages 2a-5a. For a compressor valve spindles 32 are connected by links and bell-cranks, Fig. 25 so that two inlet valves or two exhaust valves are moved together by cams 44 on the shaft 18. In another arrangement for an engine two push rods 34 are pivoted to rocking levers having bell-cranks controlled by cams on a separate cam-shaft, running at half the speed of the main shaft, geared to the shaft 18. Other types of valve and valveoperating mechanism may be used. For an engine the sequence of firing is 24, 27, 26, 25. The impeller vanes are cooled by water or oil under pressure entering the centre and being circulated throughout the vanes and shaft. The piston valves are also cooled through oil or water circulating around the spindle 32 and valve 56 as in Fig. 21. The engine cylinder is water or steam jacketed for internal-combustion engines, steam or air jacketed for steam engines, or water jacketed for compressors. Two engine units may be arranged side by side with the crankshaft between them. The cylinder 1 may be arranged for more working- chambers than described. In a steam engine cut-off may be arranged by stepping the cams. Lubricating passages are provided for oil under pressure to flow through the impeller vanes, hub, main cylinder and shaft. In the Provisional Specification it is stated that the piston vanes and boss of the rotor are made of cast iron, steel or a light alloy with the interior hollowed out for lightness.