What sets this loom apart from the way many Jacquards are used is the double harness. As Jacquard machines were made ever larger their hook number increased, giving them the ability to work full harness, with each hook controlling an individual warp yarn. The early lower capacity machines were often used in conjunction with a ground harness, the Jacquard lifting groups of warp yarns in a figure harness while the actual weave structure was created by a separate pressure harness. My loom operates on the early double harness system, the Jacquard figure harness lifting pairs of warp yarns that are also individually controlled by a four-leaf ground harness.