Powell Helicopter Project of 1935

[hesham]

Hi,

Mr. Russell S. Powell designed a coaxial-rotor helicopter or autogiro in 1935,mentioned
in Aerofiles site;

http://www.aerofiles.com/_pl.html

http://blog.modernmechanix.com/inventors-patent-odd-designs-for-safer-planes/

 

[Apteryx]

I'm not seeing anything co-axial about this machine. ???