. The locomotive engineer . only do we obtain as perfect working asfrom ordinary towers, but no Irouhle is experiencedfrom the changing position of the draw due to ex-pansion and contraction, and the movement causedby passing irains. It very frequently happens thatswitches are located near the end of a drawbridge,and the use ofa machine fixed in the center of the pOKMible I Mpiiil withopen. Willi . inierlnrkinK ti Ml pnlull lie. Iiiil mil ini|iiis^ ^.b!^ bv working tlie -igtial by meaiiKof llie last movement of Iheplunger of facing |>olut lo
. The locomotive engineer . only do we obtain as perfect working asfrom ordinary towers, but no Irouhle is experiencedfrom the changing position of the draw due to ex-pansion and contraction, and the movement causedby passing irains. It very frequently happens thatswitches are located near the end of a drawbridge,and the use ofa machine fixed in the center of the pOKMible I Mpiiil withopen. Willi . inierlnrkinK ti Ml pnlull lie. Iiiil mil ini|iiis^ ^.b!^ bv working tlie -igtial by meaiiKof llie last movement of Iheplunger of facing |>olut lock. Aswitib ileteclor, bowevir, workedby Ihe home signal well be aeiepled iiw willl-cienlly certain, but witbmit iliisa crossing should nut he IluiKiileiTdultsolulely safe In this cim-neellou we may eonsiibr Iheworking of swilches and locks byIwo linwt of wire, which is far lessciwtiv than piiM. liiil wbieh ia open I,.nbji>; •.linilhl tK-eleiirivMnlriliioiliimlr^ It 1. s have not yett ihciffeclsnf iir\ in^.l «,.ri>. litit jiiM at. Iii-^ lire likely , We He ]„ ,, . , ,, ,U,|, .11,,1 . III - _ I., iiii switch In r III! will t\.>\iem. A Iruirfiil MHiree
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1888
