This unusual ornithopter was designed by William C. Horgan together with partners Theophilus Williams and M. Halsinger. It had six wings attached along each side of its five-foot diameter tubular fuselage, intended to make 90 beats per minute driven by a 3.5 hp vapour engine. The framework was made of aluminium and was claimed to weigh only 200 lbs, with the passengers intended to sit in a cage below the fuselage. The machine crashed during a test, putting an end to the Canadian-born Chicago inventor’s dreams of profitable passenger-carrying flights and his plans to participate in the 1904 St Louis Aeronautic Competition.
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