. Book of the Royal blue . MllUXT KOVAL IASSENllEK STATU iN. iliE. SHOWING , MOTORS ASH SWITCH TOWER. THE ELECTRICAL THIRL RAIL SYSTEM 0\ B. d- 0. R. A COMPREHENSIVE VIEW OF THE MAXNEK IX WHICH THE THIUI) RAILS ARE IHc)TE(TEn AXD GUARDED IX McirXT ROYAL PASSENGER STATIi)N. BALTIMORE. THE IILACK LINES IX CENTER ARE THE SLOTS THROrUH WHICH THE COXDUCTING SHOE OliTAIXS COXTACT WITH THE RAIL. into sections, each of which was insulatedfrom the one next adjoining, and controlledby the Murphy safety switch in such a waythat the current would be on this sectiononly when the locomo
. Book of the Royal blue . MllUXT KOVAL IASSENllEK STATU iN. iliE. SHOWING , MOTORS ASH SWITCH TOWER. THE ELECTRICAL THIRL RAIL SYSTEM 0\ B. d- 0. R. A COMPREHENSIVE VIEW OF THE MAXNEK IX WHICH THE THIUI) RAILS ARE IHc)TE(TEn AXD GUARDED IX McirXT ROYAL PASSENGER STATIi)N. BALTIMORE. THE IILACK LINES IX CENTER ARE THE SLOTS THROrUH WHICH THE COXDUCTING SHOE OliTAIXS COXTACT WITH THE RAIL. into sections, each of which was insulatedfrom the one next adjoining, and controlledby the Murphy safety switch in such a waythat the current would be on this sectiononly when the locomotive was passing overthat particular section. In the same way, allrails adjacent to crossings of foreign roads,special work and in the yard, the third railwas cut up in sections and protected bysafety switches. The question very naturally is asked bythe casual observer: Why would a systemthat has worked so well as the overheadunquestionably has, be replaced byanother? There are several very goodreasons for this, among which may beenumerated the following: The initial cost of the third rail wasonly about twenty-tive per cent of the over-head: it is adapted
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Keywords: ., bookauthorbaltimoreandohiorailr, bookcentury1800, bookdecade1890
