Patent ID: 6461552
Filing Date: 2002-10-08
Classification: B28B

Abstract:
A method for producing paving stones or building stones having a basic body formed by coarse concrete and a concrete marble facing layer consisting of colored concrete solidly covering the basic body of course concrete on the top side, comprising the following steps:a) filling coarse concrete in a molding tool located below a lower space of a supply container; b) compacting the coarse concrete by shaking or pressing the coarse concrete in the molding tool; c) applying a plurality of partial segments of colored concrete to the coarse concrete in the molding tool from the lower space of the supply container to form the concrete marble facing layer on the coarse concrete via the following steps: i) supporting a plurality of differently colored partial segments of colored concrete near the top of the supply container, one stacked on top of the other on a first transversely displaceable slide; ii) displacing the first slide transversely to allow the partial segments of the colored concrete to move jointly, simultaneously, and freely down toward the lower space of the supply container via a passage slot formed between the first slide and a wall of the supply container wherein the partial segments of colored concrete move along a deflecting curve by force of gravity; iii) displacing transversely an additional slide serving as a baffle element wherein the additional slide projects into the path of movement of the partial segments of colored concrete and is variably spaced from the wall of the supply container, the additional slide guiding the partial segments of colored concrete along at least one additional deflecting curve; wherein the partial segments of colored concrete are mixed with each other as the partial segments of colored concrete move along the deflecting curves; and d) compacting the concrete marble facing layer to the coarse concrete.