Interlock stitch sewing machine for blindstitch hemming with slippage preventing device
US6308647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | May 5, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B35/102
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An interlock stitch sewing machine for blindstitch hemming with a slippage preventing device is provided which is so constructed as to prevent slippage that is likely to occur due to a position error of a lower fabric portion of the fabric portions stacked by a top-stitching at the fabric end, or a locally deformed portion due to a cutting error, in the blindstitch hemming of a tubular article such as T-shirts or underwear. A top-stiching width guide and a fabric edge guide are oppositely disposed in front of a needle location. A slippage detecting sensor that detects the edge position of the lower fabric portion to detect the presence of slippage, is attached to the fabric edge guide. When the slippage quantity detected by the sensor exceeds a permissible slippage quantity, it is determined there is possibility of slippage, and an informing means is operated. Thereby, a faulty sewing such as slippage can be reliably prevented by previously detecting a position error of the lower fabric portion or a deformed portion due to a cutting error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.