. The Street railway journal . 1 i. FIG. 2.—CROSS-SECTION OF EAST BOSTON TUNNEL UNDERTHE HARBOR is a fireproofed guard-strip, designed to keep the trolley andwire away from the concrete. It is made of North Carolinapine, and is 10 ins. wide and ij^-in. thick. Above this strip isan additional strip %-in. thick. Round trolley was used insteadof Fig. 8 trolley on account of the greater ease with whichit can be handled on the reels. There are no section insulatorsin the trolley at any point in the tunnel. The feeder system of the tunnel is shown in Fig. 5. Twocables of 1,000,ooo-circ.mil cross s
Image details
Contributor:
Reading Room 2020 / Alamy Stock PhotoImage ID:
2CH2DBGFile size:
7.1 MB (303.2 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
1763 x 1417 px | 29.9 x 24 cm | 11.8 x 9.4 inches | 150dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
. The Street railway journal . 1 i. FIG. 2.—CROSS-SECTION OF EAST BOSTON TUNNEL UNDERTHE HARBOR is a fireproofed guard-strip, designed to keep the trolley andwire away from the concrete. It is made of North Carolinapine, and is 10 ins. wide and ij^-in. thick. Above this strip isan additional strip %-in. thick. Round trolley was used insteadof Fig. 8 trolley on account of the greater ease with whichit can be handled on the reels. There are no section insulatorsin the trolley at any point in the tunnel. The feeder system of the tunnel is shown in Fig. 5. Twocables of 1, 000, ooo-circ.mil cross section each are run southwardfrom Lincoln power station on Atlantic Avenue along the ele-vated railway structure to the Atlantic Avenue station of thetunnel. Additional cables, used by surface and subway lines, are also run from Lincoln power station to this point. Here allthe cables for the tunnel conduits pass down the structure to adistributing switchboard located in that part of the AtlanticAvenue tunnel station, known as the At