A 1904 first-edition treatise issued by the Draper Company of Hopedale, Massachusetts, on plain power weaving and the Northrop automatic loom. It covers the history of weaving and the Northrop loom's development, the standard loom models (A through K), and the mechanisms: let-off, take-up, cut-motion, shedding, brakes, shuttles, bobbins, filling changers and warp stop-motions. It also gives adjustment and operating instructions, cloth defects, labor-cost comparisons, testimonials and press notices, and tables of loom dimensions and lists of mills using the looms. Illustrated with many line drawings and photographs of loom parts; there are no weaving drafts.