. Electric railway journal . ijj \<-6-\ 1L _L_. U/ron Rod fifr U~*f ■>!>}*/<3#v~-?4$ (Inside) m fW 4-Q&;Wheel 6age ... :- J END AND SIDE ELEVATIONS OF MOTOR SECTION CARS BUILT AT DETROIT March 22, 1919 Electric Railway Journal 591 Conditions Govern the Choice of Rail Bonds Several Common Types of Rail Bonds Are Discussedand Their Adaptation to Conditions Is Pointed Out By G. H. McKELWAY Engineer of Distribution, Brooklyn Rapid Transit System THE first bonds used to connect track rails wereof iron wire and were riveted into the web of therail. These very much resembl
. Electric railway journal . ijj \<-6-\ 1L _L_. U/ron Rod fifr U~*f ■>!>}*/<3#v~-?4$ (Inside) m fW 4-Q&;Wheel 6age ... :- J END AND SIDE ELEVATIONS OF MOTOR SECTION CARS BUILT AT DETROIT March 22, 1919 Electric Railway Journal 591 Conditions Govern the Choice of Rail Bonds Several Common Types of Rail Bonds Are Discussedand Their Adaptation to Conditions Is Pointed Out By G. H. McKELWAY Engineer of Distribution, Brooklyn Rapid Transit System THE first bonds used to connect track rails wereof iron wire and were riveted into the web of therail. These very much resembled the bonds nowused for the track circuits controlling signals, exceptthat the material differed. When it was found thatgreater conductance than that afforded by iron wire wasdesirable, a change was made to copper and the cross-section of the conductor was increased until solid bondsof No. 0000 capacity are now common. There is verylittle danger of a heavy solid bond being broken by themovement and vibration of the rails, as is the casewhe
Size: 2135px × 1171px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
