Method of, apparatus for, transporting yarns through measuring units
US3951321A · kind A · utility
10Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Sep 25, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for transporting yarns, especially filaments, through measuring units provides for driving the yarn from a yarn supply to a measuring point by means of delivery rollers disposed upstream of the measuring point in the direction of travel of the yarn and pulling on the yarn downstream of the measuring point to apply a predetermined amount of tension to the yarn, the pulling of the yarn being effected by a nozzle acting in the manner of an injector producing an airstream entraining the yarn so as to pull and also selectively rotate the yarn to apply a twist thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.