. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . hich the route throughail interlocking plant is locked when thesignal is cleared, and cannot be changeduntil the train has passed the signal, ismost generally shown in the investiga-tions that are made into the causes ofderailments or accidents resulting fromthe home signal being improperly runby. The possibility of the route beingchanged, cither through carelessness,poor judgment or undue excitement onthe part of the signalmen, will alwaysexist unless a lock is used to prevent achange being
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . hich the route throughail interlocking plant is locked when thesignal is cleared, and cannot be changeduntil the train has passed the signal, ismost generally shown in the investiga-tions that are made into the causes ofderailments or accidents resulting fromthe home signal being improperly runby. The possibility of the route beingchanged, cither through carelessness,poor judgment or undue excitement onthe part of the signalmen, will alwaysexist unless a lock is used to prevent achange being made. As generally applied,the lock takes effect when the home sig-nal is cleared, provided an approachingtrain is within a certain distance of thedistant signal. If a train is not ap-proaching, the signal may be cleared andreturned to the stop position at will, asit is the presence of the train that dropsthe lock and holds the route. The lockbecomes •effective only when the leverhas been reversed, and while the levermay he returned to the normal positionnt anv time, the btch is held hv the lock. IN THE OF LONG AGO—NEW YORK L ENGINES AS THEY C.\ME FROM THEPITTSBURGH LOCOMOTIVE WORKS. gives a large degree of protection. Inno instance, in my experience, said , have distant signals for eachhome signal been provided with this sys-tem, but to do without distant signals isto dispense with an important part of thesignal system. Where automatic block signals areused, is it necessary for a man to goback and flag following trains? Wherethe blocks are long and trains infrequent,the necessity for flagging is more ap-parent, and men can be more fully de-pended upon to obey the rule. If thereare places where the flagging rule can-not be strictly observed, is it not time torecognize this condition and so change therule that it will not be held over theflagmans head to convict him when thereis an accident, and to be overlooked aslong as trains are running satisfactorily? Is
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
