(under subclass 236) Method or apparatus wherein are provided a step of or apparatus for producing cyclical or random variations in the thickness of the strip by changing the relative displacement of the fibers produced by the drafting action.
(1) Note. Such devices produce a thickness or slub in the fibers, thereby adapting the material to the production of
slubbed or fancy yarns.
SEE OR SEARCH CLASS
57, Textiles: Spinning, Twisting, and Twining,
317+, for variable drafting means combined with significant twisting (including false twisting) means.
