. Railway track and track work . ital invested and depreciation, the cost of yard engine repairs and sup-plies, wages of yard enginemen, yard firemen, switchmen, yardmasters,signalmen, telegraph operators, way bill clerks and of trackmen, a percent-age of general office expenses and of wages of train dispatchers, the costof material used in track repairs, and the cost of labor and material usedin the repairs of cars damaged in the yard. Sand Track. A sand track for stopping runaway cars and trains has its rails coveredwith sand, which rapidly absorbs the momentum on the treads and flangesof th
. Railway track and track work . ital invested and depreciation, the cost of yard engine repairs and sup-plies, wages of yard enginemen, yard firemen, switchmen, yardmasters,signalmen, telegraph operators, way bill clerks and of trackmen, a percent-age of general office expenses and of wages of train dispatchers, the costof material used in track repairs, and the cost of labor and material usedin the repairs of cars damaged in the yard. Sand Track. A sand track for stopping runaway cars and trains has its rails coveredwith sand, which rapidly absorbs the momentum on the treads and flangesof the wheels run into it. This system is used instead of derails at twojunction points on the Chicago loop elevated electric railway, the length oftrack covered being about 100 ft. This will receive and stop trains whichmay pass home signals indicating stop. The faces of the outside andinside guard timbers (6x8 ins. flat and 6 x 6 ins.) are both 6 ins. from thegage side of the rail head, and a trough is formed by 2-in. planks wedged. Fig. 146.—Loop Terminals for Rapid Transit Railways. between the timbers and the bottom of the rail web, the joints beingtarred. The sand just covers the rail head. In the Friedrichstadt gravity switching yard at Dresden, Germany, about20 sand tracks were installed for stopping cars in ordinary switching work,few cars having hand brakes. The grade of the switching tracks is 1%,and the resistance with 2 ins. of sand is about of the load, so thatthe sand track can take care of cars at a velocity of 14 miles per cars on the two gravity tracks of down grade, leading from thegridirons of the classification tracks to the train tracks, are controlledby portable stop blocks (Fig. 135), which are placed upon the rails as re-quired, men being stationed for that purpose. It was desired, however, toprovide some means of stopping cars or trains which might get beyondcontrol on the grade, so as to prevent damage to the cars, the freightor the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
