| 摘要 |
An expendable spool for threads, yarns and the like, having a hub and flanges at both ends of the hub. The flanges are formed by two mirror symmetrical portions with each flange portion having a radial slot for receiving a projection of the other flange portion thereby forming interlockable but separable portions. The hub also comprises two mirror symmetrical portions, each of which is secured to a flange portion at each end so that the spool can be separated into mirror symmetrical halves. The flanges have central apertures and the hub has a central passage which is continuous between the flanges. The inner wall of the hub is provided with ribs having a triangular cross-section, the apices of which lie in a cylindrical surface for securing the hub to a spindle for rotation therewith.
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