Machines for raising water; diving and water-walking devices

Screw-and-wheel engine to raise ten barrels of water

A screw that turns always the same way yet goes and returns; its wheel-teeth are twisted so as to meet the square pinion because the frame is triangular. Leonardo claims it would raise more than 10 barrels of water at a turn and drive them as high as wished. Because the turning pinion has only a single tooth, one turn of the great wheel advances the screw 20 threads.

Bellows device to make water rise

In the lower right half a machine fitted with a bellows is labelled as a way of making water rise, with the bellows itself marked for drawing up water. The chamber beneath holds water and a small flap-valve.

Diving apparatus with reed tube and cork

At the upper left are heads of submerged men wearing goggles and a breathing tube. The captions name a reed and cork and call it a way of going underwater.

Floats for walking on the water

A standing figure is shown supported on the water surface, captioned as a way of walking upon water.

Crank-driven well machine raising a piston

Toward the centre a machine draws from a well, its parts numbered 8, 32, 6, 24. The note explains that for every four turns of the wheel's handle the rod (piston) rises and falls.

Nella metà superiore destra: figura di grande macchina con quattro didascalie. Nel cassone:

Nelle quattro ruote i numeri:

Dall'alto in basso:

Nella metà inferiore destra, macchina con mantice:

Dentro il mantice:

Dentro la parte sottostante:

Angolo inferiore destro. Macchina con ruota:

Metà superiore sinistra Testa d'uomo sommerso con occhiali e respiratore. Altra testa d'uomo sommerso:

Macchina con semiruota dentata, sopra la quale:

Sotto la stessa figura:

Verso il centro del foglio. Macchina che attinge da un pozzo; entro la quale i numeri:

Sopra la figura:

Lungo il margine sinistro:

Figura di uomo che cammina sull'acqua:

Figura di macchina con mantice:

Figura senza scritto. Figura di tromba idraulica:

In the upper right half: a large machine with four captions. On the chest:

On the four wheels, the numbers:

From top to bottom:

In the lower right half, a machine with a bellows:

Inside the bellows:

Inside the part below:

Lower right corner. A machine with a wheel:

Upper left half. Head of a submerged man with goggles and breathing tube. Another head of a submerged man:

A machine with a toothed half-wheel, above which:

Below the same figure:

Toward the centre of the sheet. A machine drawing from a well, within which the numbers:

Above the figure:

Along the left margin:

Figure of a man walking on the water:

Figure of a machine with a bellows:

A figure without writing. Figure of a hydraulic pump: