Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1976-01-26
1978-07-04
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264 86, B28B 300
Patent
active
040988651
ABSTRACT:
A method and mold are provided for making interlocking paving block and the like in which an aqueous concrete slurry is placed in a mold and subjected to instantaneous pressure of at least 1000 pounds per square inch over its entire surface to expel a large portion of water from the slurry, removing the formed article and curing. The mold is made up of a generally rectangular carrier plate with vertical sidewalls in which is placed a base plate, a pair of side plates and spacer wedge plates holding the end and side plates and a die head plate entering the mold.
REFERENCES:
patent: 2877531 (1959-03-01), Heine
patent: 3825382 (1974-07-01), Davidson
patent: 3838001 (1974-09-01), Greiner
Hanover Prest-Paving Co.
Pavelko Thomas P.
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