| 摘要 |
A flat sewing device without bobbins is provided that includes an oblong case, a plurality of gears, shuttle casing, a shuttle, and a large spool of sewing thread. The gears are connected with one another to rotate the shuttle. A pinion rotated by a driving spindle rotatably engages a driving gear. The driving gear rotatably drives a second pinion mounted on a hollow driving axial rod. The hollow driving axial rod is coupled to the shuttle and the sewing thread passes through the hollow driving axial rod.
|
