LEONARDO DA VINCI - Using the toothed wheel to transmit motion - Continuous rotary motion producing linear motion - Crank, pinion, toothed wheel and rack
Codex Atlanticus (BAM), fol. 998r (not in Leonardo's hand)
A toothed wheel, operated by means of a crank and toothed wheel, meshes with a rack, turning the rotary motion into a linear motion.