A short 1869 magazine article describing James Lyall's improved power loom, in which the shuttle rides on a roller-equipped carriage along an iron raceway instead of being thrown freely across the shed. The article explains how this gives control over shuttle speed, reduces friction and warp strain, allows very wide cloth (a six-yard-wide loom is mentioned), and produces a firm selvage. Three figures show the loom, the shuttle carriage, and the shed.