We have located a Canadian patent on another revolver, axial or barrel type engine, whose inventor was Henry Eales Smallbone.

-The one described has four cylinders and apparently the intake valve was automatic and located in the peripheral part of the engine while the controlled exhaust valve had its stem in the direction of the cams on the central shaft.

“Drawing taken from the Canadian Patent”

-The use of ball joints at the connecting rod joints and at the end of the shaft, on the oscillating plate side, also stands out.