The structural and industrial materials of California (1906)
Aubury, Lewis E., b. 1862 · Sacramento, W.W. Shannon, Superintendent State printing · leaf 246
ck isthe hydraulic pressed brick, in which the pressure is applied by a pairof hydraulic rams, which first give a pressure of 240 pounds to the squareinch, followed directly by a pressure of 3700 pounds, or about fortytons to the brick. The enormous pressure greatly increases the hard-ness and… … ILL. No. 110. FIELD BRICK KILN, SHOWING METHOD OF BURNING WITH OIL. made in many localities. The advantages claimed for the dry-press brickare smooth face, sharp edges, and freedom from defects. They generallycommand a nuich better price than the common brick. Drying.—The bricks molded by hand and…
Building stones · Portland cement · Clay · Mines and mineral resources
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