Les Wilms, of 2142 Dayton Street, Chicago, had been experimenting in airship construction and navigation since 1895. His 1910 flying machine, besides framework and a seat for the operator, consisted of a canvas sustainer overhead, flails of canvas and a rudder of like material. The hand-propelled flails, the inventor said, acted on the principle of the feathers in a bird’s wings. The aircraft, which was named “Dinosaur,” was launched into space with the aid of an incline. Trial trips conducted privately northwest of Ravenswood manor were said to have been successful.
All Aero 