| 摘要 |
A solid core plug formed from wood, plastics or a composite woody material is of substantially cylindrical shape with a body portion 17 and an integral tapered forward portion. The outer face 16 of the body portion has a diameter substantially equal to the inside diameter of the core 15 for which the core plug is intended, and the inner face of the forward portion is of slightly less diameter than the outer face to facilitate entry of the core plug into the ends of a core. The core plug includes an opening or groove 19 spaced from the center thereof and at or near its remote outer edge, the groove extending the full length of the plug for facilitating removal of the core plug from a core. The groove may be curved or straight sided. <IMAGE> |
