What machine did Leonardo da Vinci design to weave several threads automatically?

Leonardo da Vinci designed an automatic loom concept to mechanize parts of textile production.

A loom interlaces lengthwise warp threads with crosswise weft threads to make cloth. Leonardo’s mechanical studies explored ways to coordinate repeated actions such as lifting threads, inserting the weft, and beating the fabric into place. Automating those steps could make weaving more regular and reduce manual effort.

The design belongs to Leonardo’s wider interest in machines that convert continuous rotary motion into precisely timed repeated movements. Textile technology was economically important in Renaissance Europe, so improvements to spinning and weaving had practical value beyond pure curiosity.

Leonardo’s drawings should not be treated as proof that he invented the modern industrial loom. Later textile machinery introduced different power systems, controls, and production methods. His concept is best understood as an early attempt to mechanize weaving operations.