摘要 |
<p>The machine cleans paving stones etc. having a frame with one or more pairs of parallel rollers (14,16), driven in the smae direction. One or both of these are equipped with protrusions (15,17), while above each pair is a retaining plate of metal (1a), suspended in the frame and hinged. There can be a feed conveyor delivering to the rollers, and the machine can be mounted on a wheeled chassis. A motor can be included, to drive the wheels and rollers. quantity.</p> |