We located a patent on a radial engine of which it is unknown if it has been built.

In the name of John S. Hasbrouck, S. Small Jr and Leslie C.

“‘Power egg’ and engine cross-section”

-As we see, this engine has a differentiating feature with respect to the others. The combustion chambers are called "hemispherical".

-But the position of the valves in the longitudinal advance direction of the engine makes the cam plate -generally with two tracks- divided with the intake track on the rear part and the exhaust on the front part of the engine .

“Two-speed supercharger”

-Two hydraulic clutches (in the style of American automatic Powermatic type cars), make the supercharger work in High or Low speed.

From Appendix 12: The designer is related to United Aircraft Corp. that owns several engine patents and among them the radial that we bring here.

“Patent drawing of the radial engine in cowling”

-Unlike the classic engines, in the following figure we see the abnormal valve actuation between the first and second cylinder row.

-The front cam plate operates the exhaust valves and the rear cam plate the intake valves.

-This is totally abnormal in this type of engines. And precisely because of this, when feeding the opposite rows, the inclination of the pushing rods is more pronounced.

“Cross-section extracted from the original patent"