Importance

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Abstract

An apparatus for the production of molded concrete building blocks (10), hollow concrete elements or the like, the apparatus having a mold frame (21) which has at least one mold cavity (14) into which concrete can be poured upright mold walls (15, 16) of the mold frame (21) bounding the mold cavity (14), and at least one scraping member (22) with which concrete can be scraped off on an exterior side of the molded piece, in order to form a roughened surface, preferably during an upward movement of the mold frame (21) while the molded pieces are being removed from the mold, with the scraping member (22), on a side facing the molded piece, having an exterior surface (24) which is at least partially curved in cross sections, and preferably of continuously curved design with a constant radius. The concrete building blocks (10) produced in this manner have a roughened surface in the region of upright side surfaces (13), the roughened surface being of particular quality and, in particular, being of particularly uniform design.

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First Claim