Chicago : Engineering and Contracting Pub. Co. · leaf 470
ted in layersof any desired thickness. Two men could doall the necessary handling of concrete in theforms. Some difficulty was found in keeping thescrapers at the ends of the belt in good re-pair, so that a considerable amount of mortarfound its way past the scrapers and was car-ried along the belt… … Fig. 2- View, Looking Toward Mixing Plant,crete Into the on the tripper car. When the concrete leftthe end of the boom, the speed of the beltwas great enough to throw the stones out ofthe mortar, which stuck to the belt until re-moved by the scraper. To remedy this, a of Tower on Flat Car for…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
