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Scientific American, Vol. 94, No. 19 (May 1906) (1906)

leaf 9

An illustration from Scientific American, Vol. 94, No. 19 (May 1906), 1906, leaf 9
he side of the mechanism. makes which really turned out blocks actually used in tial and business construction has opened a new era The mixture is tamped in the usual way, and the ma- putting up buildings. During the past few years there to the present-day builder. It has made, possible an chine… … machine working under one hundred tons pressure. in hardwood and polished pine, reached $4,000, in- Fig. I.—Carrying1 Away a Finished Hayden Block. In general they may be divided into two classes—the clusive of the cement walks. It will be evident to the side-face and face-down. It may be put down…

Concrete · Cement · Reinforced · Machine · San · Steel · Scientific American · Mixing · American supplements · York city · Reinforced concrete · Concrete blocks · American supplement · Concrete block · Portland cement · San Francisco · Twisted steel

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