B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/73
B28B 7/22 (2006.01) B28B 7/00 (2006.01) E04C 1/39 (2006.01) E04B 2/02 (2006.01)
Patent
CA 1302058
ABSTRACT OF THE DISCLOSURE Apparatus for fabrication of concrete bricks having at least one visible surface with a texture similar to that of natural stone. The brick is made by filling a mold with concrete, vibrating the mold, and using a descending plunger to compress the concrete in the filled mold. At least one interior surface of the mold has a textured surface used to form the texture in the brick. Following compression of the concrete t a movable sidewall of the mold is moved laterally away from the brick a distance sufficient for the textured surface of the mold wall to clear the textured surface of the brick when the mold is raised. With the plunger remaining in place, the mold is raised, following which the plunger is raised. Lateral movement of the mold is effected by a cam element fixed on a slide plate, the cam element having its cam surface engaging a bolt fixed to the moving sidewall and biased outwardly from the mold. As the cam surface slides over the bolt, the outward bias of the bolt causes it to follow the cam surface and thus move the sidewall back and forth. Because the movable sidewall can be laterally cleared from the molded brick, the latter can have, for instance, an overhanging and textured visible surface, which is not possible using conventional molds.
568622
Borden Ladner Gervais Llp
Ruckstuhl Willi
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