This inventor made a radial engine prototype with 4 cylinders, opposing two by two with a shuttle-type connecting-rod system and its connection to the crankshaft known as "Double Scotch Yoke".

“Collins engine diagram”(PiP=ps)

“Double Scotch Yoke system”(PiP=ps)

-We see it more clearly in Hustler Von Sauer's drawing. The engine is mechanically supercharged and has fuel injection. We also can see the mechanism of the two camshafts and the valves.

“Collins engine complete view” (PiP=ps)

-This engine was put in consideration by an expert from the Opel Department (GM) in West Germany, in its day, as "Do not rule out that it could succeed".