. The Street railway journal . es formed into terracesby the cross streets, the grades ofthe track crossing the latter notexceeding 3 per cent or 4 per a safety precaution, the trackon this street has been equippedwith two sets of derailing of these sets is shown in , which is a view looking up thestreet. The switches are regularlyleft open, and, on the down track,the car has to lie brought to a stopand the switch closed by the conductor by means of a hand leverfrom the ground before it can be the corner of the loop, Fig. 7, the first 100 ft. of single- 1136
. The Street railway journal . es formed into terracesby the cross streets, the grades ofthe track crossing the latter notexceeding 3 per cent or 4 per a safety precaution, the trackon this street has been equippedwith two sets of derailing of these sets is shown in , which is a view looking up thestreet. The switches are regularlyleft open, and, on the down track,the car has to lie brought to a stopand the switch closed by the conductor by means of a hand leverfrom the ground before it can be the corner of the loop, Fig. 7, the first 100 ft. of single- 1136 STREET RAILWAY JOURNAL. [Vol. XXIV. No. 27. track is on a comparatively steep grade, and, as may be noticedin the illustration, the spare track at the left is made continuouswith it, while the main track is connected by means of a springswitch. This switch is always left open as a safety precaution,so that, should a motorman lose control of his car on the heavygrade, it would simply fall back into the level spare track, where. FIG. 5, -VIEW ON PORTLAND HEIGHTS LINE AT FOOT OFTWENTIETH STREET it would soon come to a standstill. The track shown in theforeground of Fig. 7 is the down track of the loop. In addition to the safety switches mentioned above, there isone installed at the lower end of a steep grade and near a sharpcurve on the stretch of track shown in Fig. 5. This is arrangedso that if a car should leave the track above this point it wouldrun into a hill instead of going down the bank on the oppositeside. In an hours trip over the entire Heights line, a car passesover four safety derailing switches on the up trip, and over
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
