Pump-driving wheel trains and a self-turning weighted device

Figure 1: geared drive with a 14-weight flywheel working paired pumps

Two toothed wheels turn a third wheel fitted with fourteen weights set around its rim to act as a flywheel. A crank on this wheel guides the alternating (reciprocating) motion of a pair of pumps that raise water.

Figure 3: partly toothed wheel sweeping the water surface with boards

A wheel toothed only over part of its circumference carries wide rectangular boards that beat or drive the surface of the water. It is one of Leonardo's studies of moving water by mechanical means.

Overbalancing weight instrument (a, b, c)

A small rotating instrument at the left is lettered a, b, c. The note states that a is the weight that presses, marking an attempt at a self-turning device kept in motion by an unbalanced weight.

Figura numero:

Due ruote dentate muovono una terza ruota fornita di 14 pesi - in funzione di volano - e di una manovella che guida il moto alterno di una coppia di pompe, con:

In basso. Figura numero:

Altre tre ruote impegnate nel moto alterno di due pompe, con:

Figura numero:

Ruota parzialmente dentata muove con ampie tavole rettangolari la superficie dell'acqua, con:

A sinistra. Strumento girevole, con:

Figure number:

Two toothed wheels move a third wheel fitted with 14 weights — acting as a flywheel — and a crank that guides the alternating motion of a pair of pumps, with:

Below. Figure number:

Another three wheels engaged in the alternating motion of two pumps, with:

Figure number:

A partially toothed wheel moves the surface of the water with wide rectangular boards, with:

On the left. Rotating instrument, with:

Pump-driving wheel trains and a self-turning weighted device

On this page

Figure 1: geared drive with a 14-weight flywheel working paired pumps

Figure 3: partly toothed wheel sweeping the water surface with boards

Overbalancing weight instrument (a, b, c)