Knob hole sewing machine with sewing material backstop
A buttonhole sewing machine (1) has a workpiece (44) stopper (54), a supporting board (17) for the workpiece (44) having a hole (18) for moving up and down a sewing needle (11), and a clamp for pressing the workpiece (44) to the supporting board (17). The stopper (54) is connected to the supporting...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | A buttonhole sewing machine (1) has a workpiece (44) stopper (54), a supporting board (17) for the workpiece (44) having a hole (18) for moving up and down a sewing needle (11), and a clamp for pressing the workpiece (44) to the supporting board (17). The stopper (54) is connected to the supporting board (17) separably and has positioning edges (68, 69, 70) for the workpiece (44). The stopper (54) is made of materials which can be cut by hand (plastics, boards). The positioning edges (68, 69, 70) are made by cut. The stopper (54) can be connected at the predetermined position of the supporting board (17) by a certain engaging part without tools. The position of the stopper (54) is secured on a sewing level by the engagement of the certain engaging part. |
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