| 摘要 |
<p>The clay in the form of granular material or wet powder which is poured into a mold (4) is swept by different independent scrapers (2) connected to the feed slide (7) and capable of being situated at a different height with regard to the free edge of the mold (4) for the purpose of accepting a larger load in the squared portions (16) in which each tile (15) is imaginatively divided, which do not attain the density of the rest. These areas of a lesser density are detected by the density testing apparatus, which are known and wherein previously obtained portions of the tiles are treated with a distribution identical to the one referred to.</p> |
