Yarn detectors
US4306231A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Apr 4, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2205/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A yarn tension detector having a cage-like form pivotably moveable between predetermined limits about the pivot point and under the control of the tension of a moving yarn. The detector includes a pair of spaced abutment members in an electrical circuit with a lamp. The cage-like member makes a circuit whenever it engages one or the other of the abutments to thereby cause the bulb to light. The member also includes oppositely directed guide formations about which a yarn is trained and as the yarn is fed from a creel to, for example, a tufting machine the tension in the yarn as it moves through the guide formations pivots the member. One of the guide formations progressively opens when the yarn tension is in excess of a predetermined high tension to release the yarn from the detector after it has indicated the yarn tension fault. One detector for each yarn cone in a creel may be connected into a circuit having an indicator at the end of a creel alley to indicate when one of the detectors in the alley has a fault and all detectors may be connected to a display device to identify a specific detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.