A good view of the Bleriot plane framework is
given on page 63.
Combined Triplane and Biplane.
At Norwich, Conn., the Stebbins-Geynet Co., after several
years of experiment, has begun the manufacture of a combination
triplane and biplane machine. The center plane, which is
located about midway between the upper and lower surfaces,
is made removable. The change from triplane to biplane, or
vice versa, may be readily made in a few minutes. The
constructors
claim for this type of air craft a large supporting
surface area with the minimum of dimensions in planes. Although
this machine has only 24-foot spread and is only 26
feet over all, its total amount of supporting area is 400 square
feet; weight, 600 pounds in flying order, and lifting capacity
approximately 700 pounds more.
The frame is made entirely of a selected grade of Oregon
spruce, finished down to a smooth surface and varnished. All
struts are fish-shaped and set in aluminum sockets, which are
bolted to top and lower beams with special strong bolts of
small diameter. The middle plane is set inside the six uprights
and held in place by aluminum castings. A flexible twisted
seven-strand wire cable and Stebbins-Geynet turnbuckles are
used for trussing.
The top plane is in three sections, laced together.
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