A short 1868 notice on the development of double box power looms for weaving checks, ginghams and plaids in Philadelphia. It recounts J. C. Kempton's first double box power loom at Manayunk around 1833 and the hand loom weavers' opposition to it. It then describes a two box loom built by Thomas Wood, with a star-pattern box motion, a one-piece cast shuttle box, a filling stop motion and a spring-cushioned shuttle stop. One engraving of the loom is included.