GB403914A - Improvements in rotary motors - Google Patents

Abstract

403,914. Rotary engines. KEMPTHORNE, J. L., 78, Hawthorne Place, Montclair, New Jersey, U.S.A. Sept. 2, 1933, No. 24422. [Class 110 (ii).] The capacity of a rotary engine or pump having a rotor 38, forming a segment of a sphere and an inclined abutment wall 38b, is varied by tilting the member 39 so that the wall 38b moves towards the vertical position. A sealing strip 47, which extends diametrically across the hemispherical working chamber, rotates with the rotor to pump fluid entering at a port 29 and leaving through a similar port. The square end of the driving shaft 33 fits into an elongated slot 41 in the rotor 38 so that the face 38a of the rotor may approach the abutment face. In a modification the abutment is formed by a plate screwed to the casing 30, and contains the inlet and delivery ports. In a further arrangement a rotating plate is secured to the sealing strip and ports in the plate co-operate with channels in the abutment which communicate with inlet and outlet ports. Fig. 12 shows a construction having the shaft 82 extended through the casing 70 to be coupled to another motor or pump shaft 85 by means of a key 84. The sealing strip 80 is circular and contacts partly within a rotating abutment disc 75 which contains ports 91, 92, leading to outlet and inlet ports 90, 89. Thrust bearings and collars on the shafts are provided. The ports in the abutment ring may be used as cut-offs, especially where steam is used to drive the rotor. Where several units are connected in alignment, the starting angles of the rotors may be different, to secure an even torque. In Fig. 13 rotating plates 117 divide a spherical space into two working chambers, wherein segmental rotors 118, 118a operate. Packing rings 125, 126, 127, are provided, and may be spring-pressed as by springs 127a. The shaft 113 has a polygonalshaped driving section extending through the centre 121. A spring 132 presses against a collar on the shaft. Intake ports 128 are furnished and the exhaust takes place through conduits 129 controlled by reed valves 130. The segments 118, 118a may be of different sizes and the two working chambers form two stages of a compound compressor. The outer radii of the two rotors may differ. This construction may be modified and arranged as a two stage steam, air, or internal-combustion engine, or one chamber may be used as an engine cylinder and the other as a compressor.