Abstract:
A pre-cast cobblestone (10) is comprised of a concrete body (11) of substantially rectangular outline and having a top and bottom wall (13-14) and opposed side walls (15). The top wall (13) is embossed and the side walls (15) have longitudinally shaped flat side surfaces (15'). At least two of the side walls have spaced-apart protruding sections (16-17, 18-19) of irregular transverse cross-section which are aligned with straight intersecting outer parallel axes (12-12') of the side walls. The side walls (15) also have recessed sections (19) of irregular transverse cross-section defined between the protruding sections. When the cobblestones (10) are laid on a support surface in substantially straight aligned relationship to define a pavement (22), they are offset end-to-end and irregularly interlocked by some of the protruding sections (16, 17, 18, 19) of some of the cobblestones entering into the irregular recessed sections (19) of other of the cobblestones to prevent shifting of the cobblestones in the pavement (22).
Abstract:
A culvert structure interconnectable with interconnectable paver blocks. The culvert structure comprises an elongated rigid casing having a bottom wall, opposed parallel vertical side walls, and an open top end. One of the vertical side walls has at least one projection formation for interconnection with a slot of adjacent ones of the paver blocks in a paved surface formed by the paver blocks. The other of the vertical side walls has a slot formation for interconnection with a blocks engaging projection of adjacent ones of the paver blocks in the paved surface. The bottom wall has passage means for the evacuation of water therethrough and a support structure connected to the rigid casing for supporting a grate over the open top end.
Abstract:
A concrete cast stone resembling a flagstone for use with other ones of the concrete cast stones for covering a surface. The concrete cast stone comprising a body having a peripheral contour of non-repetitive jagged shape for interlocking engagement of a plurality of the concrete cast stone. The peripheral contour defining a distinguishable orientation with interlocking side sections and part-interlocking side sections such that said concrete cast stones placed side-by-side interlock by one or a combination of (1) matching the interlocking side sections in a linear arrangement of the concrete cast stones, and (2) matching the part-interlocking side sections in a herringbone arrangement. A method for assembling the concrete cast stone is also provided.
Abstract:
A casted concrete stone having opposed parallel surfaces formed in a mold and wherein the opposed parallel surfaces have a molded textured surface. The concrete stone is fabricated by a dry-cast concrete mold wherein a profiling plate is provided with mold bottom wall formations each having a textured outer surface. A bond release film or spray or permanent coating is provided on the textured outer surface of the mold bottom wall formations. Mold forming side walls are disposed about the mold bottom wall formations. After the mold is filled with a dry-cast concrete mixture a top plate, having mold top wall formations, is disposed over the mold forming side walls with the mold top wall formations disposed inside respective ones of the molds to close the molds. Pressure and vibration is applied to compact the dry-cast concrete whereby to form a dry-cast concrete stone with opposed molded textured surfaces.
Abstract:
A casted concrete block surface-roughing machine having an in-line conveyor displaceable over a stationary horizontal support surface for slidingly supporting a lower surface of concrete blocks displaced thereon by the conveyor. At least two pairs of spaced-apart vertically supported conveyor belts are disposed to engage opposed side faces of the concrete blocks to displace them along the stationary horizontal support surface. One of the pairs of the conveyor belts engages the opposed side faces in a lower surface section thereof to expose an upper surface section thereof to be abraded by respective surface abrading devices. The other of the pairs of conveyor belts engage the opposed side faces in the upper surface section of the concrete block to expose the lower surface section thereof to be abraded by further respective surfaces abrading devices.
Abstract:
A culvert structure interconnectable with interconnectable paver blocks. The culvert structure comprises an elongated rigid casing having a bottom wall, opposed parallel vertical side walls, and an open top end. One of the vertical side walls has at least one projection formation for interconnection with a slot of adjacent ones of the paver blocks in a paved surface formed by the paver blocks. The other of the vertical side walls has a slot formation for interconnection with a blocks engaging projection of adjacent ones of the paver blocks in the paved surface. The bottom wall has passage means for the evacuation of water therethrough and a support structure connected to the rigid casing for supporting a grate over the open top end.
Abstract:
A transport apparatus for the engagement, orientation and installation of a unit of paving blocks is comprised of a support frame having a pair of spaced-apart aligned pivot connections. Support arms are pivotally connected to each pivot connection under the support frame. Two or more spaced-apart parallel block engaging arms are displaceably secured by connecting posts to the pair or parallel support arms. A piston simultaneously displaces the parallel support arms and the block engaging arms. The block engaging arms each have two or more suction cups for releasable securement to a top face of respective ones of paving blocks in the unit of paving blocks. When the piston rod of the piston is at a first position all of the suction cups are aligned on transverse parallel axis and when at a predetermined second position they are disposed in alignment on parallel angulated axis. The method of installation is also described.