| 摘要 |
PURPOSE:To shave the jags of the crushed stones to make the surfaces smooth as the natural stones by rotating the drum container into which the crushed rocks with the sand, water, small stones, etc. as the interfering materials are thrown in. CONSTITUTION:Two rails 3 are provded around the drum container 1 to roll over the roller 6. The container 1 has a flap 2 through which the crushed rocks 9 and the interfering materials 11 such as the water, stones, iron balls, etc. are thrown in when the container 1 is rotated. By doing so, the sharp jags of the crushed rocks 9 are shaved and the stones as round and smooth as the natural ones can be produced in a short time. |
