How are patterns formed in Wilton carpets?

In Wilton carpets, patterns are formed primarily through the use of a Jacquard attachment on the loom. This mechanism utilizes a system of perforated cards, with one card corresponding to each row of pile. These cards are punched according to a predetermined design, allowing the loom to select the required combination of different colored threads for each row.123

When a specific pile yarn is not required for the surface design, it is not discarded; instead, it is concealed within the body of the carpet, woven longitudinally between the top and bottom weft. This process allows for intricate designs, though the number of colors available in a single design is typically limited by the number of threads per dent. Additionally, Wilton carpets can incorporate varied textures, as high-cut, low-cut, and uncut pile effects can be produced to further enhance the design.123