Abstract
We experimentally discuss the distribution of points where the speed of every fiber changes from the surface speed of the back roller to that of the front roller in the roller draft field. The term “fiber” as used here means the fiber tip. When the ratch widens, the center of the distribution shifts from the side of the front roller towards the back roller, and the range of distribution windens. The variation of draft ratio and of the roller speed is unrelated to distribution.