Method for manufacturing a building block imitating a pile of dr

Details Method for manufacturing a building block imitating a pile of dr Method for manufacturing a building block imitating a pile of dr

1987-06-24

1988-11-15

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

249 99, 264139, 264162, 264256, 264504, 264570, 264DIG57, 425357, 425446, B28B 1122, B29C 4320, B32B 3120

Patent

active

047848219

ABSTRACT:
A method of manufacturing a building block which imitates a pile of dry stones. According to the method, the stones (10) are placed side-by-side on the bottom of a mold whose inside shape corresponds to the desired block shape, said bottom being constituted by a grating. Cement is then cast inside the mold. The cement (11) is compressed in order to force it to spread out uniformly inside the mold and to creep between the stones (10). While the cement is kept under pressure, water is projected through the bottom grating against the outside face of the block (1), so as to remove any cement which may be found thereon. Pressure is then removed from the cement and it is allowed to set. Finally the block (1) is extracted from the mold.

REFERENCES:
patent: 756971 (1904-04-01), Leighton
patent: 772476 (1904-10-01), Podmore
patent: 1162172 (1915-11-01), Jones
patent: 1619733 (1927-03-01), Jeppson
patent: 1856906 (1932-05-01), Carvel
patent: 3390496 (1968-07-01), Weiner et al.
patent: 4466937 (1984-08-01), Johnston et al.
The Master Builders Company, "Concrete 64", vol. 3, No. 2, pp. 12-13, Apr. 5, 1965.

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