The aerial screw, and an armored cart drawn by horses
The helical air-screw of starched linen that rises when spun, and an armored horse-drawn cart in place of war elephants
The lower half of the sheet carries the famous flying machine: a helical screw whose framework of long, thick reeds is covered in linen with its pores stopped by starch. Turned swiftly, the screw is said to cut its thread in the air and climb; the outer edge is iron wire, the radius from center to rim eight braccia, and a small paper model can be spun by a twisted iron spring. Above, a note describes an armored cart drawn by horses that takes the place of elephants, carrying blowers to frighten the enemy's horses and gunners to break every rank; a fragmentary caption reads 'to joust against...'.
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The aerial screw of starched linen
If this screw-shaped instrument is well made of linen cloth with its pores stopped by starch and turned swiftly, it cuts its female thread in the air and rises high; the example is a wide thin ruler driven hard through the air, whose edge guides the arm. The framework is of long thick reeds, the outer edge iron wire, and from rim to center is 8 braccia. A little paper model can have a thin iron-plate shaft, twisted by force, that spins the screw as it unwinds.
Armored cart drawn by horses, in place of elephants
A horse-drawn armored cart, marked with its support (sostegno), takes the place of elephants. With it one may joust, carry blowers to frighten the enemy's horses, and place gunners inside who will break every rank.