Improvements in Rotary Engines

22,299. MacKaskie, P. M., and Pittman, K. Oct. 9. Movable-abutment type with rocking abutments. Relates to valve and governing gear for rotary explosion engines, especially engines of the type described. Between the two halves 10, 11 of a casing revolves a disk 16 carrying piston blocks 15. Abutments with passages for the disks are rocked by means of a slide 20 actuated by an arm 31, working in an opening 28 in the slide, shaped so that the abutment is held stationary for the explosion, or the passage of the piston, and then moved. An explosion chamber 75 is provided to which gasolene and air are admitted by pipes 81, 79, provided with valves 83, 82, and communicating with pipes 101, 100 surrounding the casing. The valves 82, 83 and a valve 88 in an exhaust pipe 89 are connected to a bar 85 provided with a pin 121 passing through an angular slot in a plate 119 attached to a circular rod 103 passing round the casing. Similar valves and gearing are provided for driving the engine in the opposite direction. The valve-rods are actuated by tappets 113, 114 on an arm 109 carried on a rock-shaft 51. The tappets are carried on a block 110 adjustable by a screw so as to engage either valve-rod or neither. Fig. 8 shows an arrangement of the rod 109 in which the screw adjusting the block 110 is operated by bevel-gear connected with the loose sleeve M by a pin H working in a gap in the sleeve M so as not to be interfered with by the rocking of the shaft 51. The shaft 51 is actuated by a hook 48 on a bent lever 46 carried by a rocking arm 42 journaled on the shaft of the engine and driven therefrom as shown. The hook 48 is disengaged by the tail of the lever 46 striking against a piece 53 in the circumference of the casing 10. The position of the piece 53, and therefore the time for which the valve remains open, is regulated by a governor on the shaft of the engine. For this purpose the piece 53 is connected by a link 56 within an arm 57 adjustably connected to the sleeve 58 by a slotted disk 72 and a latch. The sleeve 58 carries a fork 60 engaging with a lever 61 connected to a collar 62 operated by the governor 67.