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 108
to steady tho machine, and if made double-skinned, it may be used as a condenser to con- dense the exhaust steam. The machine is guided by the aeronaut changing his position and thus altering the centre of gravity. {Drawings.) A.D. 1884. No. 2057. LAKE, William Robert. (Communicated by Francois… … Screw propellers rotate in cylindical casings situated in the girder, and a fan, which is mounted on a universal joint at the stern of the balloon, directs a current of air against an adjacent surface. H
Aeronautics
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