Loop holding device of chain stitch sewing machine
US6688246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B29/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chain stitch sewing machine comprises a needle for penetrating through a cloth on a throat plate to be vertically moved interlockingly with a main spindle of the sewing machine, thereby holding a needle thread, a cloth presser mounted on the throat plate and serving to press the cloth, a looper having a looper thread for reciprocating in such a direction as to cross a cloth feeding direction below the throat plate interlockingly with the main spindle of the sewing machine, a main feed dog for feeding a loop formed by the needle thread and the looper thread in cooperation of the needle and the looper rearward in the cloth feeding direction, and a loop engagement member for protruding from an upper surface of the throat plate and engaging the loop with the cloth presser when the main feed dog is descending from the upper surface of the throat plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.