Patent GB-191226662-A (GB)
Title: A New or Improved Rotary Internal Combustion Engine.
Inventor: BRICKNELL AUGUSTUS LEA
IPC: F02B53/00
Filed: 1912-11-20
Granted: 1914-02-20
Abstract: 26,662. Bricknell, A. L., Bricknell, A. J. G., and Bricknell, J. L. Nov. 20. Movable-abutment type; balancing moving parts; cooling parts; driving - arrangements for motors; packing drums and vanes; reversing - details other than valves and valvegear; working - fluid supply. - Relates to rotary internal-combustion engines of the Roots'-blower type and comprises a number of modifications in all of which the air or gas mixture is passed between the meshed incoming teeth of the rotors on its way to the combustion chamber. In the modification shown in Fig. 1, air or gas mixture is admitted on the unencased side e of the rotors c, d and is passed between the incoming meshed teeth into the encased combustion chamber f, where continuous or intermittent combustion is effected, exhaust taking place at the parts g. The supply side e may also be provided with a casing having suitable fuel and compressed-air ports. In a reversing engine, Fig. 4, air is admitted at e, compressed air if desired at u, and fuel at o, and the mixture is carried into the encased chamber q and thence through the meshed teeth into the combustion chamber f, the exhaust gases being carried round to the ports g. Jets of cooling water and scavenging air may be supplied to the teeth by pipes r, s respectively. Duplicate sets of ports and relief cocks are provided for reversing, the functions of the chambers f, q being interchanged. Pockets may be formed in the end plates of the casing to connect the combustion chamber with the point of closest engagement of the teeth. In a compound arrangement, Fig. 6, the gases from the combustion chamber f are led by conduits x into the chamber y of a secondary engine, and the air or mixture compressed in the chamber q may be conveyed by pipes j to the teeth of the primary engine on their way to the compression chamber. With arrangements of the kind shown in Fig. 7, if compressed air or mixture is admitted through the end plates into a central chamber 8 on its way to the combustion chambers 2, 3, its retarding effect on the outgoing teeth of the wheels 4, 5, 6, 7 is balanced by its driving effect on the incoming teeth. Other modifications are described having a central combustion chamber or a central toothed wheel. The shafts of the wheels may carry at their ends hardened rollers bearing on one another. Reversing may be effected by providing each of the oppositely running shafts of the meshed wheels with a loose pinion gearing with a wheel on the main shaft and adapted to be clutched to its respective shaft or to run idly. The casing may be water-jacketed and cooling-passages may be formed in the wheels as shown in Figs. 14 and 15. Further cooling and also packing may be effected by directing thin sheets of water from pipes 63, Fig. 16, on to the teeth peripheries as they are leaving the combustion chamber. The spaces between the teeth may be cleared of exhaust gases by providing small toothed wheels meshing therewith. When the compression chambers are fitted with relief cocks, the engine may be governed by operating these cocks either by hand or by a governor. When the engines are coupled together in axial alinement, the teeth of each engine may be arranged out of line with those of its neighbour.