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Scientific American, Vol. 56, No. 22 (May 1887) (1887)
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o quickly move the bridge under all circum- latticed in pairs and united to form a box six feet deep the top of the center panel by four bars five inches stances. and six feet from center to center of girders. The wide by 1% inch thick. These bars support the weight The first proposed method of… … (Temporary-Draw Closed. View of Oia Draw, showing Side track. Temporary Draw Open. NEW DRAW BRIDGE OVER NEWARK BAY ON THE N. J. CENTRAL R.S. ©1887 SCIENTIFIC AMERICAN, INC.Patented · Patents · Munn · Center · Contained · Scientific American · Dammar · Emergent pencil · Sole manufacturers · Specific gravity · American supplement · Address munn · Letters patent · Express money · Sewing machine · Side pieces
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