Roland Emett was a cartoonist, designing amazing machines, but better than Heath Robinson, he actually built them. Several are still in use today around the world, including 8 in Ontario Canada.
Here is an archive clip of a flying machine he built. I once spent a year rebuilding an airplane that had crashed. I then crashed it again on the test flight, which it failed. I feel Emett and I may have something in common when it comes to building airplanes.
There are short clips of some of Emmets other machines at this address.