. Electric railway journal . Mesaba Railway—Signals in Vestibule of Car—Revolving Contact Shoe—Equipment in Dispatchers Office The east-bound and west-bound movement has madepossible the use on each car of a single shoe, whichmakes contact with those third-rails on the right-handside of the track. The removal of one shoe from thesingle-end car more than offsets the added cost of thepolarized relay. On a double-end car, however, two. Mesaba Railway—View at Center Siding Showing SignalRails and Switch Box shoes are required, and also a small four-pole poles of this switch connect the
. Electric railway journal . Mesaba Railway—Signals in Vestibule of Car—Revolving Contact Shoe—Equipment in Dispatchers Office The east-bound and west-bound movement has madepossible the use on each car of a single shoe, whichmakes contact with those third-rails on the right-handside of the track. The removal of one shoe from thesingle-end car more than offsets the added cost of thepolarized relay. On a double-end car, however, two. Mesaba Railway—View at Center Siding Showing SignalRails and Switch Box shoes are required, and also a small four-pole poles of this switch connect the shoes, and theother two poles connect either one or the other set ofcab signals. If a motorman changes from the frontto the rear cab, he cannot get the cab signal permittinghim to proceed until this four-pole switch is in theproper position. Open-switch protection is also provided in a simpleand inexpensive way. This is done by passing the sig-nal wire through an ordinary switch box before con-necting it to the third-rail. In this way, when theswitch is open or partly open, the signal current cannotreach the third-rail as the circuits are broken at theswitch box. The passage past a non-energized third-rail producesa red cab signal on the car at the distant rail, which is2000 ft. away from the home rail on this road. Both man, it does not depend on the human element. Incase the directional switch is not in the proper positi
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
