Complex sentence: The first power loom, a mechanized loom powered by a line shaft, was designed in 1784 by Edmund Cartwright and first built in 1785, it was refined over the next 47 years until a design by Kenworthy and Bullough, made the operation completely automatic.
Split into simpler sentences: The first power loom was designed in 1784 by Edmund Cartwright and first built in 1785. It was refined over the next 47 years until a design by Kenworthy and Bullough, made the operation completely automatic.