What type of automatic loom mechanism did Leonardo da Vinci sketch to speed up weaving?

Leonardo da Vinci sketched an automatic loom mechanism to speed up weaving.

His textile-machine studies explored ways to automate repetitive actions such as moving the shuttle, coordinating threads, and winding yarn. A loom creates fabric by arranging lengthwise warp threads and passing a weft thread across them. Mechanizing those motions could make weaving faster and more consistent than relying entirely on hand operations.

Leonardo’s designs belong to a broader Renaissance interest in improving textile production. They were detailed mechanical proposals, but surviving evidence does not show that every loom concept was built or operated successfully. The sketches should therefore be described as designs or studies rather than as a documented industrial machine invented and commercialized by Leonardo.

An automatic loom is not a spinning wheel. Spinning turns fibers into yarn, while weaving interlaces yarns into cloth. Leonardo studied both textile processes, which is why the two kinds of machine are sometimes confused when his notebooks are discussed.