Wilson-Knee Swash plate engine

 

Classic MotorCycle Dec1990

This is another idea in internal combustion engines from some British engineers in the 1920s, there is no crankshaft,  just a swash plate acted upon by the connecting rod/plungers. This one is a four cylinder two stroke, the pumping volume is the area below the piston, sealed by stuffing glands around the connecting rods. Apparently it was notably smooth-running but I can't find out much more than that, there is little information online. 

This not a unique idea, there was an American marine engine around in the thirties, the Sterling Diesel-  not a lot of information on it either.