Process for the precision measurement of the length of thread wound onto a bobbin

摘要

Process for measuring the length of the yarn wound onto a bobbin which, at discreet intervals, determines the length of yarn wound in a tangential direction, the length of yarn wound in an axial direction, combining them to obtain the precise partial length wound spirally onto the bobbin at each interval and integrating the partial lengths progressively indicated during the advancement of the bobbin to obtain the overall length.