Weil Ornithopter / Bicycle Bird
The Ornithopter, or Bicycle Bird, was built by Lehman Weil in 1927. Inventor Wilde insisted "This Bicycle Bird will fly”.
Weighing 275 pounds, there was a sprocket-and-gear arrangement that flaped the wings while a pilot treadles and iron pipes for struts.
During tests at Curtiss Field on Long Island the airplane was not successful. There were stories of chasing the thing across Staten Island as the wings flexed and its engine strained.