Thread end holder for sewing machine with thread winding bobbin
US4733622A · kind A · utility
11Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1987 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Feb 24, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B59/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A needle thread end holder for a sewing machine having bobbin thread replenishing mechanism in which an annular groove formed in the presser securing screw accomodates a stretched rubber "O" ring so as to apply only a limited frictional resistance to a thread introduced beneath the "O" ring insufficient to abort a bobbin thread replenishing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.