What type of machine did Leonardo da Vinci design to weave ropes automatically?

Leonardo da Vinci designed a rope-making machine to automate the twisting of fibers into rope.

Rope production traditionally required coordinated manual work to twist strands and combine them. Leonardo's mechanical studies explored ways to organize that process with rotating parts, guides, and controlled tension, reducing the need for several workers to coordinate every movement.

His notebooks contain designs for machines used in manufacturing, including devices related to textile work and cordage. These inventions show that Leonardo's interests extended beyond weapons and flying machines into the mechanization of ordinary production.

The design should not be confused with a spinning wheel or a loom. A spinning wheel turns fibers into yarn, while a loom interlaces threads into fabric. Rope-making combines twisted strands into a thicker, stronger cord.