N. H. Borgfeldt
Not much comment yet.
Had not seen this before.
Patent was hiding a bit.
Hang Gliding Association with both National and Local Forums
https://ushawks.org:443/forum/

RickMasters wrote:Reminds me of the early glider pilots who jumped out just before they crashed.
.The concepts of Newtonian physics and the acceleration of gravity were still some time off in my future