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 44
33 construction, having most of its working parts hollow to give lightness, and the gas required is drawn direct from the … balloon. A small auxiliary balloon, situated inside the balloon, is inflated with air to compensate for the loss of gas. A.D. 1865. No. 1037. KOTHLEB, Gustave Wilhelm. (Provisional only.) " Flying Machine." A steong but light framing surrounds the body of the person who is to fly, and the said…
Aeronautics
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