Speed control for weft feed spool in weaving looms
US4715411A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Aug 13, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/33
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method to control the speed of the weft feed spool in weaving looms includes feeding at least two items of detected data related to weft delivery and supply, and loom operation, into a control mechanism, and using the data to calculate as a number of windings, the variation of the weft length reserve from the average minimum desired weft length reserve as determined by an average weft length reserve sensor and adjusting the speed of the feed spool in response to such calculations. A maximum weft length detector may be used as a control for the feed spool as well as a sensor for the time and number of unwindings of weft from the feed spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.