| 摘要 |
<p>A chain comprised of a conventional sequence of pivotally connected links some of which links have extensions for engaging objects, e.g., links wherein the extensions have sharpened edges for engaging and cutting trees. The novelty being the provision of links preceding and following the links having the extensions provided with forwardly projected portions and rearwardly projected portions. The rearwardly projected portions underlie the forwardly projected portions of the following links to restrict independent pivotal movement via leverage action.</p> |
