FIELD: textile.
SUBSTANCE: disclosed is method of preventing multi-strand chain stitch seam releasing. Normal sewing stops by looper installation in motion state advanced forward position, wherein needle thread loop is trapped by looper, subjected to retention in looper motion path front end position closer than to needle falling position, it is maintained until needle falling through needle thread loop, caught by looper. Then needle thread loop is released from retention position, allowing to realize sewing action at least in one stitch, thus allowing needle thread loop to be self-engaged with needle thread loop held by needle.
EFFECT: this undoubtedly reliably prevents occurence of multi-strand chain stitch seam releasing, formed by single needle, regardless of tension applied to thread needle and looper thread.
7 cl, 29 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SEWING MACHINE WITH MULTI-THREAD CHAIN STITCH AND DEVICE OF PREVENTION OF RIPPING STITCH | 2012 |
|
RU2563755C1 |
| METHOD OF PREVENTION OF RELEASING SEAM, DEVICE OF PREVENTION OF RELEASING SEAM AND SEAM TYPE | 2012 |
|
RU2555807C1 |
| SINGLE-THREAD CHAIN-STITCH SEWING MACHINE | 0 |
|
SU1124055A1 |
| METHOD FOR PREVENTING OF STITCH FROM RUPTURE AND APPARATUS FOR PERFORMING THE SAME | 2006 |
|
RU2322536C2 |
| METHOD OF MAKING OF OVERHANDING STITCH | 1993 |
|
RU2061131C1 |
| TWO-THREAD CHAIN-STITCH SEWING MACHINE | 0 |
|
SU1388489A1 |
| METHOD FOR FORMING A TWO-THREAD TWO-LINE CHAIN STITCH AND A DEVICE FOR ITS IMPLEMENTATION | 2021 |
|
RU2756206C1 |
| CHAIN STITCH SEWING MACHINE | 0 |
|
SU662637A1 |
| DOUBLE-THREAD CHAIN-STITCH SEWING MACHINE | 0 |
|
SU654710A1 |
| METHOD OF PRODUCTION OF THE EDGE-OVERLOCK TWO-THREAD BUTTONHOLE STITCH AND THE EDGE-OVERLOCK TWO-THREAD STITCH SEWING MACHINE FOR ITS REALIZATION | 2005 |
|
RU2290464C1 |
