| 摘要 |
The reusable plug-on ring for bobbins (2) consists of an elevated rim (8) and a plug-in part (3) in which the rim has, on the surface intended for contacting the bobbin, an arcuate recess (7) which serves to catch and fix the thread starting end and, when the ring is pulled off from the bobbin, to release the thread starting end again. <IMAGE>
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