ound on their pivots, orby turning them upward on their hinges, the topof the shed may be opened so as to allow a bal-loon to rise from within. upper plane has an opening in its median por-tion ;^the front portions of this upper plane nearthe opening have a greater angle of incidencethan the other… … U. S. PATENT 954,574 May Willi; U. S. PATENT 957744 U. S. Patent 957,744.Christmas. This is an aeroplane for which automatic sta-bility is claimed, through the shape of the twosupporting planes. The upper and lower planesconverge toward one another at the ends: the air toward the ends of the-Qt…
Aeronautics
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