Device for clamping the workpiece in a sewing machine
US4031835A · kind A · utility
4Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1976 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | May 7, 1996 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2207/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a device for selectively actuating the workpiece clamp of an automatically controlled bar tacker sewing machine utilizing electrically operated pneumatic cylinders operatively connected to the upper clamping element to cause release of the workpiece. The clamp feet are releasably independent of other sewing operations. The upper clamping plate and the feed plate are secured to the clamp assembly by quick change fittings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.