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

LEONARDO DA VINCI - Ratchet wheel with horizontal pawl


Madrid Ms. I (BNM), fol. 117r (detail)

Leonardo regards this as the best type: "Such servants are generally placed along a horizontal line [with respect to the wheel teeth], in order to have their weight always operating towards the site they are leaning upon."

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