Method and apparatus for preloading material to be sewn into a sewing machine and for compensating for uneven lengths of such materials
US5097777A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B35/105
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved method and apparatus is provided for use in a sewing machine. The improvements include preloading two pieces of material which are to be sewn together. The preloading is accomplished by positioning pieces of material to be sewn under a gripper spaced from the sewing head on a table while prior pieces of material are being sewn. The gripper engages the material and, when the prior sewing operation is completed, the gripper is moved across the table toward the sewing head to load the preloaded pieces of material. When the two pieces of material are preloaded, most of the material hangs over an edge of the table and the lengths of the pieces of material are determined by movable detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.