| 摘要 |
The cover has fork-shaped mountings (22) which enclose bolts (30) that are held in the wall (38) of the spinning box (2) so that they can rotate. The mountings (22) are attached to the bolt (30) by a locking device (32) that is easily accessible from the outside, e.g. a screwed bolt (32) through the front of the spinning box.
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