Residual thread chain back tacking device for overlock stitch machines
US4763590A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S112/01
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A residual thread chain back tacking device for stitching a residual thread chain in the proper position of a succeeding sewn cloth material has a thread chain cutting device which initially cuts most of the thread chain off, and then blows the remaining thread chain in the back tacking direction and horizontally. A thread chain suction pipe moves adjacent the back tacking position and sucks the remainder of the thread chain thereinto and holds it by means of a thread chain press cylinder while back tacking is completed. An air nozzle then blows the remaining thread chain against a cutter, and the suction in the thread chain suction pipe sucks the cut-off end away.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.