An illustrated overview of the mechanisms of power looms used for woollen and worsted weaving, written by a University of Leeds weaving lecturer. It covers the primary motions (shedding, picking, beating-up), secondary motions (warp let-off and cloth take-up) and auxiliary devices such as warp and weft stop motions, warp protectors and automatic weft supply. It compares tappet, dobby and Jacquard shedding, describes alternatives to shuttle picking (rapiers, Sulzer carriers, gripper shuttles, air and water jets), and closes with likely trends in loom design and a glossary of ten terms. Photographs show power looms, a warping mill, a Jacquard loom and drawing-in.