| 摘要 |
The pivoting points (26) to swing the shrouding forward are located at the leading ends (24) of the longitudinal carriers (18). As the shrouding is tilted, they retract. The height of the shrouding is regulated (40) according to the back rest (4,4a) for the warps (12,12a), by the swing action on the pivots (26) at the leading ends of the carriers (18). The pivoting points (26) are at the leading edge (28) of the shrouding with an axis carried at the ends (24) of the carriers (18) and a bush to allow shrouding movement. Alternatively, the pivoting points can be hinges to link the ends of the carriers with the shrouding.
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