LEONARDO DA VINCI - Using the toothed wheel to transmit motion - Continuous rotary motion producing alternate rotations - Pinions and semi-toothed wheels

Madrid Ms. I (BNM), fol. 19v (detail)

The same effect is produced with a more complex device. The crank activates a vertical wheel bearing teeth on only half its surface. The wheel meshes with two similar wheels placed at right angles to it. As a result, the two pinions m and n turn in alternating directions.

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