. The Street railway journal . iron petticoat cast-ing and wooden insulating plug,have been abandoned, and awrought iron collar now supportsthe span wire with the insulationmade in three places on the spanwire. The return circuit is made byconnecting the ends of the railswith a No. o, soft drawn, tinnedcopper wire. This is laced backand forth one and one-half timesso as to present three times theconductivity of a single No. o is held in place in the rail bybonding chucks. The return is alsosupplemented by connecting therails at intervals with the under-ground return consisting of barec
. The Street railway journal . iron petticoat cast-ing and wooden insulating plug,have been abandoned, and awrought iron collar now supportsthe span wire with the insulationmade in three places on the spanwire. The return circuit is made byconnecting the ends of the railswith a No. o, soft drawn, tinnedcopper wire. This is laced backand forth one and one-half timesso as to present three times theconductivity of a single No. o is held in place in the rail bybonding chucks. The return is alsosupplemented by connecting therails at intervals with the under-ground return consisting of barecopper wire already mentioned asbeing carried in the feeder still further improve the return circuit, galvanized iron rods are driven down into theground at every manhole, and connected with the re-turn feeder already mentioned. In the suburban dis- were: For laying the conduit, the manufacturers of theconduit; for driving the galvanized iron rods, bondingand overhead system, Pepper & Register, of Philadelphia;. FIG. 6.—GENERATORS- -13TH STREET STATION OF PHILADELPHIA TRACTION for all lines except the Twelfth & Sixteenth, Thirteenth &Fifteenth, Morris & Tasker and Grays Ferry lines andthe Long Lane extension. The greater part of the work on
Size: 1831px × 1364px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
