What kind of machine did Leonardo da Vinci design to weave rope automatically?

Leonardo da Vinci designed a rope-making machine intended to automate the twisting and production of rope.

Rope making was an important industrial task because ships, wells, construction projects, and military equipment all depended on strong cordage. Leonardo’s mechanical studies addressed ways to coordinate several motions through gears, drums, and rotating components. His rope-making design shows the same interest in replacing repetitive manual labor with controlled mechanical movement that appears in his textile and workshop drawings.

The surviving plans are engineering studies rather than evidence of a mass-produced machine. Leonardo frequently recorded mechanisms in notebooks without documenting construction or long-term operation. The design is also easy to confuse with a loom, but a loom interlaces threads to make fabric, while a rope-making machine twists fibers or strands together. This distinction matters because Leonardo designed many machines for different workshop processes.