Patent GB-190702645-A (GB)
Title: Improvements in and connected with Two Stroke-cycle Internal Combustion Rotary Engines.
Inventor: WILKINSON HENRY ORWIN
Filed: 1907-02-02
Granted: 1908-03-26
Abstract: 2645. Wilkinson, H. O., Johnson, H. C., and Teather, J. Aug. 2. Revolving - cylinder type. - A twostroke-cycle internal-combustion rotary engine with radial cylinders is made so that cylinders and crank both rotate, but in opposite directions, suitable gearing being provided whereby they drive a common shaft. Pressure feed is used. The engine is governed by a governor of the tilted-ring type. The ignition arrangements allow for the misfiring of alternate cylinders when it is required to run the engine at a low speed. Four radial cylinders a<1>, a<2>, a<3>, a<4>, Figs. 1 and 2, are arranged within a fly-wheel a. The lower parts of the cylinders are connected to hollow casings c, c<2>, Fig. 1. The casing c also supports a web b connected to the rim a. The fly-wheel, cylinders, and casings revolve as a whole on ball bearings, as shown in Fig. 1. Within the cylinders are four pistons connected to a crank A' formed on a hollow shaft A. A bevel - pinion j, Fig. 1, is formed integrally with the crank and shaft, and a similar pinion j<1> is carried on the revolving casing c. These bevel-wheels are connected together by bevel-wheels j<2> mounted upon spindles forming part of a non- revoluble sleeve k. As the crank and cylinders revolve in opposite directions, the power of both is thus transmitted to the shaft A. Gas under pressure enters the lefthand side of the hollow shaft A, and passes through holes in the shaft into the interior of the casing c<2>, whence it reaches the cylinders by way of perforations q, chambers e<5>, semicircular channels e<1>, and ports e<2>. After explosion by means of sparking-plugs y, the exhaust passes out by way of ports e<3>, semicircular channels e<4>, and pipes e<6> to the atmosphere. The explosive mixture is generated in a spray carburettor C, Fig. 4, and passes through a valve 61 to a rotary compressor r of the fixed abutment type with outwardly-sliding valves. The compressor is driven by the engine. After compression it passes through a check valve s' to a reservoir s, whence the mixture passes to the hollow shaft of the engine, as described above. The valve 6 is of the oscillating cylindrical type, having an oblique partition, and is provided with a spring trip - gear 9 whereby it may be rapidly reversed. The function of this valve is to enable the gas to flow as set out above when the engine, and consequently the compressor, is reversed. The compressor shaft r<4> carries a governor of the tilting- ring type, consisting of aring 15, Figs. 4 and 5, pivoted to a spindle carried by the shaft. The ring 15 is connected by links 20, 21 to two sliding sleeves 18,19, connected by arms 22, 27 to link-work 26,25, 24, 29, t<5>. Under the action of a spring 30, the sleeves 18, 19 are drawn outwards, thereby tilting the ring 15 to the position indicated by R, R, Fig. 5. The link 26 is normally stationary, but is carried by an accelerator lever so that the action of the governor may be modified if desired. The link t<5> actuates the throttle valve. On the rotation of the shaft r<4>, the ring 15, under centrifugal action, tends to assume an upright position in opposition to the spring. The sleeves 18, 19 are thereby drawn inwards, and motion is imparted to the valve lever t<5>. Ignition is effected by sparking-plugs y, Fig. 1, connected to a contactbreaker arranged on the casing c by leads y<1>. The contact-breaker comprises alternate long and short contact-pieces y<2>, Fig. 1<b>. A brush y<3>, Fig. 1<a>, consisting of a spring-carried roller, may be shifted laterally by a quick-thread screw mechanism y<8>, whereby all or half the contact-pieces may be brought into action as required. Ignition in alternate cylinders may be thereby prevented, when it is desired to run the engine at a low speed.