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

LEONARDO DA VINCI - Systems to reduce friction on rotating axles - Lubrication


Madrid Ms. I (BNM), fol. 118r (detail)

Automatic lubrication device for vertical rotating iron axles: oil is released by the small cup (right). Leonardo did have some doubts about the efficiency of this solution: "the wear of the axles produces iron filings, which, in admixture with oil and dust, rapidly fill these holes."

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