Standard cotton cloths and their construction (1927)
Nichols, Henry W. (Henry Wyman), b. 1872 · Fall River, Mass. : Dover Press · leaf 86
have double eyes in place of the single eye found in the ordinary wire heddle. Each twine on the doup harness has one end carried through the top eye of the standard heddle and back through the bottom eye of the same heddle, thus forming a loop at one side of the standard heddle. The third harness… … ends, are shown in Fig. 76. The doup end 8, is drawn through the back harness, also through the loop formed by the doup passing through the top eye of the standard heddle and back through the bottom eye. Thus this end may be lifted by the back harness, also by the doup and standard harnesses…
Cotton · Cotton weaving · Textile fabrics
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.