| 摘要 |
<p>The strip of material, metal, fabric or similar, passes over a change of direction roller on the input side. It then passes downwards over a larger diameter roller changing direction to pass upwards. It then moves over a third roller on the outlet side, this being on the same level as, and parallel to, the input roller. Input and output rollers are mounted on U brackets which can slide in or out to adjust the distance between them. The lower roller is also mounted in a housing and can be adjusted for distance away from the two top rollers.</p> |
