| 摘要 |
Screening mechanism includes two systems of screen-carrying members, the two systems, in static condition thereof, extending in substantially the same horizontal plane, the carrying members being disposed spaced from one another in a given direction and substantially in transverse alignment with one another in the given direction, the carrying members of one system being in respective alternate arrangement with the carrying members of the other system, a screening member comprising a web, at least partly deformable by gravity, carried by the carrying members, each of the carrying members of one of the systems being connected by the screening member to the carrying members of the other system adjacent thereto, and means for relatively moving the two systems in the given direction whereby the spacing between the adjacent carrying members is continually varied in the dynamic condition of the systems, and the screening member is deformed in accordance with the varied spacing between the carrying members.
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