| 摘要 |
<p>The present method provides for the making of blocks shaped on two faces by means of model plates (10, 11). After depression of the plates, the envelope (17) sealed at (40) containing the granular material (30) is, in its turn, subjected to depression through the tubes (23) and (24) of the armature. The plates are then removed, as shown on the drawing, while the internal depression is mantained. The blocks are juxtaposed, and two adjacents blocks will form a print and their free faces will enable the making of two more with two additional blocks. Thus, (n-1) prints will be obtained for n blocks.</p> |
