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 128
cylinder which is actuated by steam or other power. The wings are composed of elastic ribs attached to a main rod, which latter is fulcrumed to a link attached to the cylinder, and its inner end is connected to the end of the piston-rod. The wings are made to turn on the rods in order to feather in… … A flexible parachute is made mushroom-shaped with a hole at the top for the passage of air.
Aeronautics
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
![An illustration from Histoire de mes ascensions : récit de vingt-quatre voyages aériens [1868-1877] (1880)](https://img.insideoutlibrary.com/img/200/ia-39002011210615.med.yale.edu-258-15.webp)
