US Patent No. 2,528, granted April 1, 1842 to Rollin White of Williamstown, Vermont, for a way of mounting and operating the harness in looms that weave bolting-cloth. The heddles pass around neighboring warp threads so that the warp is twisted one or more times between successive weft picks, which keeps the mesh openings even. The drawing sheet has three diagrams (Figs. 1-3) showing single twists, multiple twists, and a two-harness arrangement, and the specification and claim follow.