| 摘要 |
<p>A means for varying the distance between gear supporting shafts (3) is provided by mounting at least one of the shafts (3) eccentrically on a rotatable plate (2) which, when rotated, causes the shaft (3) to move laterally. The invention provides for further mounting this first support plate (2) eccentrically with a second rotatable support plate (5) to increase the versatility of the lateral movement of the shaft (3).</p> |
