Method of and apparatus for detecting faults in the operation of open-end spinning machines
US4007457A · kind A · utility
34Cited by
7References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1975 |
| Grant date | Feb 8, 1977 |
| Priority date | — |
| Expiry date | Jan 24, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Faults in produced yarn occurring by fouling of spinning units can be detected by measuring changes in the cross-sectional diameter of the yarn and producing a control signal indicating irregularities. The apparatus of this invention includes a measuring device for measuring the cross-sectional diameter and producing a signal representative thereof, which signal is processed in a discriminator circuit, including at least a correcting circuit with a non-linear characteristic, an integrating circuit and a comparison circuit to compare the integrated signal with a predetermined standard, thereby producing the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.