Dictionary entry from Knight's American Mechanical Dictionary on the teaseling machine used in woolen manufacture to raise a nap on cloth. It explains how teasel burs (Dipsacus fullonum) raise the fibers, and traces the move from hand teaseling to the gig-mill. It describes the English patent machines of Oldland and Ferrabee (1830) and Birkenshaw's machine, illustrated by a diagram (Fig. 6233) showing teaseling cylinders, rollers and a shearing cylinder.