GB393156A - Improvements in rotary engines and pumps - Google Patents

Abstract

393,156. Rotary engines. MAXIMUM PUMPS & ENGINES, Ltd., 12, Campbell's Buildings, Vulcan Lane, Auckland, New Zealand. Oct. 6, 1932, No. 27837. Convention date, Oct. 17, 1931. [Class 110 (ii).] A rotary pump comprises a rotary casing 1 which drives an inner, eccentrically-positioned rotor 17 through a vane 29 hinged in the casing and sliding in the rotor, and extending for the full length of the working chamber. Fast and loose pulleys 8, 8a are supported on the driving shaft 5 to which an end wall 3 of the casing is keyed and also secured by a screw 9. The driving disc 3 has an inlet chamber 10 through which enters the fluid being pumped, and connects the hollow shaft 5 with the pumping chamber 2. A stationary shaft 18 is supported at one end by a bearing pedestal 16a, and at the other end by an offset portion 18a of the shaft held in a ball bearing located in the end wall 3. The casing endplate 4 has a projecting ring 14 which is supported on a ring 15 attached to the pedestal 16a. Packing is provided between the rings. The pump delivery port 20 is connected with the pumping chamber through a circular opening 13 and ports 28. The rotor 17 is supported on the shaft 18, and through springs 24 bearing axially on a plate 4 the rotor is caused to press against a wear plate 25. A series of parallel metal strips 32 are inserted in the periphery of the rotor and are retained in position by split rings 33. Springs 34 force the strips outwards. The rotor is balanced by a counterweight 35. Lubrication is obtained through passages 36 in the shaft 18. Fig. 11 shows a similar apparatus arranged as an internal-combustion engine. One rotary chamber 39 acts as a fuel compresser for the working chamber 40 from which it is separated by a partition 36a. The rotors 17 are supported on a cranked stationary shaft 37a. Fuel from a carburetter enters a port 41 into a circular recess 42 in a casting 43 which is pressed against the rotary casing by springs 44. The compressed charge passes through a valve 53 into a combustion chamber 54, fired by a plug 55 and enters the working chamber of the engine 40, through a valve 56. The latter is operated by a rocker arm 67 controlled by a fixed cam 69. Exhaust gases pass out by way of a passage 59 to a circular recess 62 which does not rotate but which is pressed against the rotary casing by springs. A water jacket surrounds the exhaust 62. The engine drive is imparted to a shaft 65 through gears 66.