. Electric railway review . Ravenswood Extension of the Northwestern Elevated—Plan andSection of Track on Tangent and Curves. Ravenswood Extension of the Northwestern Elevated-Station Platform. -View of fastened to the ties by specially designed screw spikes withcold-rolled threads. Details of the standard track constructionon the tangents and on curves are illustrated herewith. Aswill be noted, the guard rails are fastened to the ties byscrew spikes and the ties are secured to the structure bythrough hook bolts. Since much difficulty has been experienced with the stand- -O^KaiFOPHf %t10LLSCOR
. Electric railway review . Ravenswood Extension of the Northwestern Elevated—Plan andSection of Track on Tangent and Curves. Ravenswood Extension of the Northwestern Elevated-Station Platform. -View of fastened to the ties by specially designed screw spikes withcold-rolled threads. Details of the standard track constructionon the tangents and on curves are illustrated herewith. Aswill be noted, the guard rails are fastened to the ties byscrew spikes and the ties are secured to the structure bythrough hook bolts. Since much difficulty has been experienced with the stand- -O^KaiFOPHf %t10LLSCORED,ro(*k BOLTS. the switches are all provided with movable frogs. All the spe-cial track work was furnished by the Morden Prog & Cross-ing Works, Chicago, 111., in accordance with designs furnishedby the company. The sharpest curves are 400 feet radius-,and the maximum superelevation of the outer rail is 4 inches. Details of Electrical Work. An interesting detail which is illustrated in one of theaccompanying drawings is the form of insulator employedfor the third rail. This insulator, which was designed andpatented by P. J. Guernesey of the Northwestern Elevated, KfcFtflOS5SECTJON/WQfL£ or Jtiflar5SpH03AVDH
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
