of the market, but thequality of the product is vastly superior to that of the besthand-made article, and with the system illustrated the qualityof brick manufactured is far in ad vance of the product of The following report of tests made by General Q. A. Gillmore shows the extraordinary strength… … other machines. Bricks made by machinery have been com-monly deficient in strength, unequal in size and density.The Gregg triple pressure and combination brick machine,shown in our engraving, possesses new and valuable features,which insure a yield of bricks superior to the best hand-made, and at a…
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