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Manufacture of Stone Brick

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International Tract and Missionary Society · OAKLAND, CALIFORNIA · Jul 15, 1886

FromSigns of the Times, Vol. 12, No. 27.

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Manufacture of Stone Brick

ONE of the most recent enterprises brought to the notice of the New York public is the manufacture of a so-called stone brick. The process consists in grinding quicklime and silicious sand together, and then mixing intimately with more sand in the presence of moist steam. The mixture is then moulded under heavy pressure and blows, and the bricks stacked up and plentifully sprinkled while hardening. They are not put on the market until at least three months old.