Jack MechanismUpdated 6 months ago

A Jack Mechanism is a system in multi-shaft looms, particularly jack looms, that allows individual shafts (harnesses) to be raised independently. This system is powered by a series of jacks, which are essentially levers or cams that lift each shaft when activated. Typically, the jack mechanism is connected to treadles (foot pedals) on floor looms, so pressing a treadle raises specific shafts to create a shed—the opening through which the weft thread passes.

The jack mechanism is known for its versatility and ease of use, making it a popular choice among hobbyist and professional weavers alike.