APPARATUS AND METHOD FOR FEEDING STRING.

摘要

A method of and apparatus for feeding string from a supply involves entraining the string around at least one feed roll and driving the feed roll continuously in cycles in a direction for feeding the string forward. Each of the cycles involves varying the speed of the roll for feeding a predetermined length of string forward per cycle. The string is subjected to a force in the reverse direction upstream from the feed roll and to a force in the forward direction downstream from the feed roll.