. Electric railway journal . d low-tension wires are in the samehorizontal plane. The 600-volt trolley is sectionalized withwooden section insulators 8 ft. long at a distance of 100ft. on each side of the crossing, and is carried over thecrossing under an inverted 5-in. channel which is supportedby four Y%-m. stranded steel cable span wires. The 11,000-volt trolley wires are sectionalized with similar sectioninsulators inserted on each side of the channel, so that trolley wire normally carries no current of any the north side of the crossing a feeder is taken off the600-volt tr
. Electric railway journal . d low-tension wires are in the samehorizontal plane. The 600-volt trolley is sectionalized withwooden section insulators 8 ft. long at a distance of 100ft. on each side of the crossing, and is carried over thecrossing under an inverted 5-in. channel which is supportedby four Y%-m. stranded steel cable span wires. The 11,000-volt trolley wires are sectionalized with similar sectioninsulators inserted on each side of the channel, so that trolley wire normally carries no current of any the north side of the crossing a feeder is taken off the600-volt trolley wire and carried to a switch mounted on topof a wooden pole set just outside the curb line. The otherside of this switch is connected to one of the steel spanwires supporting the crossing channel. A wooden rod runsdown the pole from the switch and by pushing up on thisrod the switch may be closed and 600-volt direct currentfed to the crossing channel and trolley wire so as to permit Cross Catenary 10 4 (rom Top of Rail. Hoosac Tunnel—Twin Hanger for TunnelTrolley Wires Hoosac Tunnel—Crossing of n,ooo-Volt and 600-Volt Trolley Wires in North Adams rails in the open. The steel messenger cable and the trolleywires for the open sections were received from the manu-facturer in lengths of about 1 mile and were run out simul-taneously as in the tunnel. All of the steel catenary bridges,cross-catenary towers and transmission line towers werefabricated by the Archbold-Brady Company, Syracuse, N. Y. OPERATION OF TRAINS DURING CONSTRUCTION While the construction trains were at work on one trackin the tunnel freight and passenger trains were operated inboth directions over the other track with the use of a trainstaff, the 5-mile tunnel section constituting an absoluteblock. As soon as the work trains emerged from the tunnelafter a days shift normal operation was restored on bothtracks. Right-of-way was given to passenger trains at alltimes and as a consequence freight trains ofte
Size: 2384px × 1048px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
