| 摘要 |
<p>The invention relates to the tarpaulin-covering of a hopper loaded on a platform. The device includes two parallel series (S, S') of horizontal compasses (3), said series being connected to a tarpaulin winder (2) at one end and to the free end (8) of the tarpaulin at the other end, and co-operating together so that their expansion results in the unwinding of the tarpaulin, a mechanical device being provided for synchronising the opening and closing of the series of compasses.</p> |
