. Electric railway journal . December 16, 191 i.] ELECTRIC RAILWAY JOURNAL. 1239 ing a brass contact piece which made contact with a fixedcarbon brush connected to the feeder cable. The experi-mental car was equipped with two magnet bars made ofNorway iron 20 ft. long, 2 in. wide and 1 in. thick sus-pended from the motor cases with wood of these bars carried three magnet coils each com-posed of 20 lb. of No. 19 cotton-covered wire inclosed in. Cross-Section Through Contact Box a sealed copper shell. The collector shoe was a long cop-per bar attached between the magnet bars and
. Electric railway journal . December 16, 191 i.] ELECTRIC RAILWAY JOURNAL. 1239 ing a brass contact piece which made contact with a fixedcarbon brush connected to the feeder cable. The experi-mental car was equipped with two magnet bars made ofNorway iron 20 ft. long, 2 in. wide and 1 in. thick sus-pended from the motor cases with wood of these bars carried three magnet coils each com-posed of 20 lb. of No. 19 cotton-covered wire inclosed in. Cross-Section Through Contact Box a sealed copper shell. The collector shoe was a long cop-per bar attached between the magnet bars and arranged topermit of a vertical movement of 3 in. The magnet coilswere connected in series with the collector shoe. This improved equipment was installed and put in serviceon April 7, 1909, and was in use until June, 1910. Theexperimental line was % mile long and in one month asmany as 1722 trips were made over the line. In the four-teen months of service the only failures were twentybroken carbon contacts caused by the impact of the arma-tures. After considerable experimenting Le Carbonebrushes were adopted, as they were found in perfect condi-tion after a test of more than 300,000 contacts. As the result of this test the Lewisburg & Tyrone branchof the Pennsylvania Railroad, 10 miles long, was equippedwith the system early in 1911 and has been in operationfor the last six months. The contact boxes used in thisinstallation are made of reinforced
Size: 2532px × 987px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
