What type of machine did Leonardo da Vinci design to make textile threads?

Leonardo da Vinci designed a spinning machine to mechanize the production of textile thread.

Spinning transforms loose fibers such as wool or flax into a continuous thread by drawing out and twisting the fibers. Leonardo’s textile-machine studies explored ways to coordinate these actions mechanically, using spindles, wheels, and gearing. Textile production mattered greatly in Renaissance Italy because cloth manufacture was a major commercial industry.

Leonardo’s drawings do not represent one universally adopted machine that replaced hand spinning. They are proposals and studies showing how mechanical power might improve speed and regularity. Some designs were intended for operation by people, while others could use water power or linked mechanisms.

A spinning machine is not the same as a loom. A spinning machine makes thread from fibers; a loom interlaces finished threads into fabric. Leonardo also studied automated looms and other textile devices, so identifying the machine’s function is essential when comparing his engineering sketches.