A short trade article from The Melliand describing the patented Treinis system of mechanical design creation, developed by Leonard R. Treinis of Brooklyn and licensed to mills. Designs are laid out on numbered "Jac-cards" and new patterns are produced by rearranging the order of the cards, so that one set of hosiery selectors can serve many designs. The article lists the textile applications suggested for the method, including hosiery, knitted outerwear, webbing, rugs, towelings, neckwear and worsted weaves. Illustrations show a master design for seamless hosiery, rearranged variations and photographs of the punched card stacks.