The device was attached to a crosspiece fastened just
below the propeller between the main frame uprights. A stick was
made to swing on a bolt in the center of the crosspiece to which
was attached a weight at the lower end and two lines connecting
the ends of the planes at the upper end. These are shown in Fig.
1. When the aeroplane tips, as
[Illustration: Warping the Aeroplane Wings]
shown in Fig. 2, the weight draws the lines to warp the plane so
it will right itself automatically.
--Contributed by Louis J. Day, Floral Park, N. Y.
** Repairing Christmas-Tree Decorations [11]
Small glass ornaments for Christmas tree decorations are very
easily broken on the line shown in the sketch. These can be easily
repaired by inserting in the neck a piece of match, toothpick or
splinter of wood and tying the hanging string to it.
[Illustration: Repaired Decoration]
** Homemade Scroll Saw [11]
A scroll saw, if once used, becomes indispensable in any home
carpenter chest, yet it is safe to say that not one in ten
contains it. A scroll saw is much more useful than a keyhole saw
for sawing small and irregular holes, and many fancy knick-knacks,
such as brackets, bookracks and shelves can be made with one.
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