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Origin of loom?
The earliest looms, from the 5th millennium BC, consisted of bars or beams forming a frame to hold a number of parallel threads in two alternating sets. By raising one set… of these threads (which together formed the warp), it was possible to run a cross thread (a weft, or filling) between them. The fundamental operation of the loom remained unchanged, but over centuries many improvements were introduced in both Asia and Europe. The drawloom, probably invented in Asia for silk weaving, provided a means for raising warp threads in groups as required by a pattern. In the 18th century joseph-marie-jacquard mechanized this function by the ingenious use of punched cards; the cards programmed the mechanical drawboy, saving labor and eliminating errors. (MORE)
