Chain stitch conversion for lock stitch sewing machine
US4278037A · kind A · utility
2Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1979 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Sep 14, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B1/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chain stitch conversion throat plate for a lock stitch sewing machine, the throat plate carrying a thread loop retaining pin and a thread stripper device actuated by the up and down motion of the sewing machine feed dog. The thread stripper device includes a block pivotably supporting a wire form having one end for extending beneath the feed dog for up and down motion therewith, and the other end extending adjacent the thread loop retaining pin for stripping the retained loop therefrom on downward motion of the feed dog.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.