. Building and repairing railways . Fig. 133. jump crossing frogs for steam and street railroads. ST. I2V Dj 1 &D8 OF Coys TBI rCTlON. 235 Switch stands are so arranged that they throwthe switch and display a signal at one opera-tion; the signal is arranged to indicate a cleartrack on the main line or show the train crewthat the switch is open to enter the siding. Withall split and safety switches where the train cantrail through and open the switch, an automaticor safety switch stand should be used to preventeither the points of the switch or the switch rodbeing damaged. Figs. 134 and 135 ill
. Building and repairing railways . Fig. 133. jump crossing frogs for steam and street railroads. ST. I2V Dj 1 &D8 OF Coys TBI rCTlON. 235 Switch stands are so arranged that they throwthe switch and display a signal at one opera-tion; the signal is arranged to indicate a cleartrack on the main line or show the train crewthat the switch is open to enter the siding. Withall split and safety switches where the train cantrail through and open the switch, an automaticor safety switch stand should be used to preventeither the points of the switch or the switch rodbeing damaged. Figs. 134 and 135 illustrate a Fig. 134. RAMAPO SAFETY SWITCH stand as it APPEARS WHKN half THROWN BY HAND. 236 BUILDING AND REPAIRING Fig. 135. RAMAPO SAFETY SWITCH STAND AS IT APPEARS WHENHALF THROWN BY WHEELS PASSING THROUGH THE SWITCH. safety switch made by the Ramapo Iron firm have recently added an adjustable crankto their safety switch stand; it assures the switchstand of being able always to lit the throw of the STANDARDS OF CONSTRUCTION. 237 switch, and to take up any lost motion that mayaccumulate from wear and avoid the necessity ofadjustable head rods, or of shimming out the rodto keep the gauge. There is an endless varietyof switch stands, and the types only will he givenhere. Fig. 136 represents a switch stand for a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
