| 摘要 |
A scraper for moving friable material. The scraper includes a frame adapted for attachment to a vehicle and an articulated blade. The blade has left and rig ht portions mounted on the frame for pivoting about a substantially horizontal axis transverse to the articulated blade. Each of the left and right portions of the articulated blade is adapted for pivotal movement about the axis between a substantially horizontal lower ed position and a raised position, and each portion is independently positionable in at least one position between the lowered position and the raised position. The articulat ed blade is positionable for engagement with the friable material as the vehicle travels over the friable material for moving a part of the friable material to shape the friable material in accordance with a predetermined design.
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