Dictionary entry from Knight's American Mechanical Dictionary describing the napping-machine, used to raise the nap or pile on woolen and cotton fabrics. It explains an improved machine (Fig. 3293) with a napping cylinder, rollers, eccentrics and ratchet feed that naps four pieces of cloth at once, and a variant (Fig. 3294) using a stenciled metal band to nap only patterned areas. Two engraved figures illustrate the mechanisms.