Weaving fibers to form a fabric has been a part of human existence since ancient times. Weaving is the process of interlacing longitudinally oriented warp threads with horizontally oriented weft threads to form a woven fabric. Weaving is performed on a loom, a device arranged to hold warp threads under tension while allowing the weft threads to be sequentially added to them, to produce a fabric. The relative movement and positioning of the warp and weft threads during the weaving process results in a sequence of thread
placements that together form a pattern in the finished fabric. To change patterns, the sequence of thread placements must be modified, a traditionally labor and time intensive process. Through the centuries, looms have had a variety of configurations, but their basic function has remained the same.
Loom technology has seen a variety of innovations throughout history in a continuous effort to make fabric production faster, easier, and more cost-effective. The Jacquard machine invented by French weaver Joseph-Marie Jacquard (born 1752 in Lyon, France) revolutionized the field of weaving. His invention, which uses punch cards to represent a desired sequence of thread placements during operation of the loom, greatly reduced the labor involved in the process of weaving. Jacquard designed a device that would be attached to a loom to control the placement of individual warp threads according to a pre-set progression of steps represented and controlled by a pattern of holes in each of a set of punch cards. This allowed looms to not only produce complex textile patterns such as brocade, damask, and lace, but also to be changed quickly from one pattern to another. By simply exchanging a first set of punch cards for a second set of punch cards, the loom could be reprogrammed to produce a new fabric pattern. Jacquard looms are used for weaving all sorts of intricate patterned textiles. They could be programmed to weave a single pattern fabric or a combination of patterns with different colors. Continue reading “Programming Fashion”