Aëronautics: an abridgment of aëronautical specifications filed at the Patent Office from A. D. 1815 to A. D. 1891 (1893)
Brewer, Griffith, comp, Alexander, Patrick Y., joint comp, Great Britain. Patent Office · London, Taylor and Francis · leaf 113
wheel-frame is provided at the lower part of the machine, and by running the machine down hill whilst actuating suitable treadles the machine is caused to rise by reason of the flap- ping motion of the wings. Several pairs of wings may be employed in one machine, and steam or other power may be… … containing the motive power, and the propelling is performed by oars and a screw. A rudder is employed for steering.
Aeronautics
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
