Don't look like turbines/rotors to me. I think it's more likely an "umbrella helicopter" except of course Barry's version worked. It ties in with Franz' comment about stuff with birds and kites being silly if you look at some of the other far-fetched "flyingfailing machine ideas.
viz: http://www.youtube.com/watch?v=tyKruOzPWZw
Sorry I couldn't find a still of it, but I think that clip may be the only photographic record ever made.