Yarn thickness zone monitor has a fork-shaped yarn guide for the running yarn which swings with a thicker zone to trigger a signal without blocking the yarn movement

摘要

To detect thicker zones in a running yarn, the yarn travels through a fork-shaped guide which is shifted when a thicker yarn zone passes through it. The movement of the yarn guide from its start position triggers a signal. When the yarn guide is tripped by a thicker yarn zone, it allows the yarn to continue moving, and then it returns to the start position. An INDEPENDENT CLAIM is included for an apparatus to register thicker yarn (2) zones, with a fork-shaped guide (4) which covers the moving yarn partially. The yarn guide has movement, and works with a movement detector. Preferred Features: The yarn guide is on a swing mounting with a horizontal swing shaft (5), and has a return spring (8) with an adjustable spring force. The width of the yarn guide can be adjusted, between the fork tines (4a,4b). The components for the yarn guide swing movement are encapsulated in a housing (6).