Two pages from a series on mechanical power transmission in textile mills, covering shaft couplings. The first section describes flexible couplings (disc, flange with flexible pins, link, belt, and insulated types) and their allowable shaft misalignment and size ranges. The second section covers clutch couplings (jaw and friction types) used to cut sections of line shafting in and out. Illustrated with Figs. 23-33 of couplings.