Patent GB-191021303-A (GB)
Title: Improvements in Rotary Engines.
Inventor: JACOBS OLAUS BRUIN
Filed: 1910-09-13
Granted: 1911-07-13
Abstract: 21,303. Jacobs, O. B. Sept. 13. Movable-abutment type; working-fluid supply; valve-gear; cooling parts.-A reversible simple or compound rotary engine, adapted to be operated by steam or gas, comprises a number of sliding- rocking abutments supported partly by a rotary casing and partly by a sleeve surrounding a stationary eccentric through which the motive fluid is admitted and exhausted. In the engine shown in Figs. 1, 2, and 8, motive fluid from a chest 8<1> passes through a port 11<a> in a tubular valve 11. According to the position of the valve, which can be rotated by a crank 29, this port registers with one or other of two opposite passages 19<a> in a stationary eccentric 19, and the rotary casing 13 is driven in a forward or reverse direction by the motive fluid passing through ports 22<a> in a rotating sleeve 20 and acting on the abutments 23, which are connected to the sleeve by a pivot and slidable link, and are adapted to enter pockets 24 in the casing. Similar sets of ports and passages for exhausting the fluid are provided at two different axial points in the sleeve and eccentric, and the exhaust fluid finally escapes through ports 11<b> into the interior of the valve 11 on the other side of the partition 12. In the modification shown in Figs. 9 and 11, two cylinders are compounded, or the first cylinder 91 may compress a charge into the second cylinder 90 where it is exploded. In this case, the tubular valve 70 is provided with an inlet section 70<1> which supplies the first cylinder 91, an intermediate section 70<111> which receives the compressed charge from the first cylinder and supplies it to the second cylinder 90, and an exhaust section 70<11> which discharges the exploded gases from the second cylinder. In addition to ports and passages similar to those of the single-stage engine, a ring valve 100 is provided. This valve is secured by a pin 102 to the rotating casing, and is adapted to close the passages leading to the intermediate chamber 70<111> at the moment of ignition in the working-chamber. Ignition is effected by sparking-plugs 110, the rotating casing actuating an intermittent contact. By arranging the casing and eccentric so that a small passage is left between their lowest points, the heated exhaust gases automatically ignite the compressed charge. The engine is regulated and reversed by moving a lever which causes a casing 131 to slide axially, this movement being communicated by a pin 124 and web 123 to the valve-stem 122, which by means of a pin 121 engaging a spiral slot 121' in the valve rotates the latter in either direction relatively to the fixed eccentrics 60, 61. The same movement of the lever reverses the point of ignition. Cooling passages and chambers are arranged in the eccentrics and walls of the working-chambers and between the valve sections 70<11>, 70<111>. Gasoline from a tank 177 may be circulated in these passages instead of water, the heat absorbed being utilized for vaporizing. In Fig. 17, a modified form of sleeve is shown formed in halves 180, 181, each abutment 182 being pivoted to the portion 180 and adapted to operate on -either side of an inlet port 80<a> according to the direction of working.