Online Exhibits > Leonardo and the Engineers of the Renaissance > Manuscripts > Madrid Ms. I

LEONARDO DA VINCI - Using the toothed wheel to transmit motion - Continuous rotary motion producing reciprocal linear motion - Toothed wheel, pinion and rack


Madrid Ms. I (BNM), fol. 28r

"If you turn crank op in the same direction, rack mn will move back and forth." The lower drawing shows the same system, in which the rack has been replaced by a rod moved by a pinion, to which it is connected by ropes.

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