In connection with these supplemental planes (5), there is
employed a gravity influenced weight, the aviator in his seat,
for holding them in a horizontal, or substantially horizontal,
position when the main plane is traveling on an even keel; and
for causing them to tip when the main plane dips laterally, to
port or starboard, the planes (5) having a lifting effect upon
the
depressed end of the main plane, and a depressing effect upon
the lifted end of the main plane, so as to correct such lateral
dip
of the main plane, and restore it to an even keel. To the
forward,
upper edge of planes (5) connection is made by means
of rod (13) to one arm of a bellcrank lever, (14) the latter
being
pivotally mounted upon a fore and aft pin (15), supported from
the main plane; and the other arms of the port and starboard
bellcrank levers (16), are connected by rod (17), which has an
eye (18), for receiving the segmental rod (19), secured to and
projecting from cross bar on seat supporting yoke (7). When,
therefore, the main plane tips downwardly on the starboard
side, the rod (17) will be moved bodily to starboard, and the
starboard balancing plane (5) will be inclined so as to raise its
forward edge and depress its rear edge, while, at the same time,
the port balancing plane (5), will be inclined so as to depress
its forward edge, and raise its rear edge, thereby causing the
starboard balancing plane to exert a lifting effect, and the port
balancing plane to exert a depressing effect upon the main
plane, with the result of restoring the main plane to an even
keel, at which time the balancing planes (5), will have resumed
their normal, horizontal position.
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