This company is known as the Toroidal Aircraft Motors Co. of Nebraska, and they developed a strange engine in 1935.

- It had two cylinders curved in a semicircle, as seen in the photograph.

- The valves were in the center of each cylinder. There were four cylinders producing 56 HP.

"Toroidal Engine"

"Drawing of the above Toroidal Engine"

- Curiously, we include the drawing of the Toroidal engine that appeared in Ricardo Miguel Vidal's first book, entitled "Alternative Aviation Engines," published by CEAC in May 1966, in the Spanish language.