| 摘要 |
<p>The jam cleat, partic. for sailboats, comprises two movable clamping jaws (13) which between them form a clamping gap (23). The jaws (13) have one or more rollers (17) which cooperate with the sheet. The rollers have a toothed formation and an axially symmetrical addendum envelope. The rollers (17) are mounted on spindles (16) which extend parallel to the plane of the movement of the clamping jaws. The sheet is pressed into the clamping gap (23) by rotating and separating the rollers (17). Under the usual load, the sheet is locked in the direction of pull (22), and in the opposite direction the sheet can be easily retightened.</p> |
