The "lift," or vertical upward pull, obtained with the
type is high, and this, combined with its steadiness, makes the kite useful
for aerial photography, and, on a much larger scale, for man-lifting.
The materials required for the comparatively small example with which the
reader may content himself in the first instance are:
8 wooden rods or bamboos, 4 feet long and 1/2 inch in diameter. 4 yards of
lawn or other light, strong material, 30 inches wide. 12 yards of
unbleached tape, 5/8 inch wide. 8 brass rings, 1 inch diameter.
The Boxes.--Cut off 2 yards 8 inches of material quite squarely, fold
down the middle, crease, and cut along the crease. This gives two pieces 80
by 15 inches.
Double-stitch tape along the edges of each piece.
Lay the ends of a piece together, tapes inside, and stitch them together
half an inch from the edge. Bring a rod up against the stitching on the
inside, and calculate where to run a second row of stitching parallel to
the first, to form a pocket into which the rod will slip easily but not
loosely. (See Fig. 119, a.)
Remove the rod and stitch the row.
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