. The Street railway journal . ernator at the extreme end of the system and out-side of the larger engine is also connected to this enginethrough a magnetic clutch, but can be driven only by thelarge engine. It will be noted from the general view, , that this alternator is also mounted on a hollow quill, July 7, 1900.] STREET RAILWAY JOURNAL. 609 so that when extensions are made to the system a solidshaft can be put through this alternator to connect it to thenext engine in the line in the same way that the two othergenerators can now be connected to either engine. By means of this system
. The Street railway journal . ernator at the extreme end of the system and out-side of the larger engine is also connected to this enginethrough a magnetic clutch, but can be driven only by thelarge engine. It will be noted from the general view, , that this alternator is also mounted on a hollow quill, July 7, 1900.] STREET RAILWAY JOURNAL. 609 so that when extensions are made to the system a solidshaft can be put through this alternator to connect it to thenext engine in the line in the same way that the two othergenerators can now be connected to either engine. By means of this system the failure of any one dynamodoes not incapacitate either engine, nor does trouble with service could be continued in case of failure of this gener-ator by feeding back from the sub-stations and by virtueof the storage battery at the power station. Normally thedirect-current machine and one alternator are run by oneengine, in case of light load by the small engine, and incase of heavy load by the large engine. At the time the. Scale 1 i0 _IFIG. 5.—SECTION OF POWER STATION any engine throw out of service any dynamo, while failureof the larger engine only shuts down one alternator. Thelarger engine is sufficient in size to carry the usual load,and a reserve source of power is provided without usinganother engine of the same size by fitting the smaller en-gine with a by-pass in such a way that both its cylinders photograph reproduced in Fig. 1 was taken, it will be seenthat the large engine was in operation, driving the alternatorat the left-hand end of the line and the direct-current ma-chine. At any time the couplings may be changed so thatthe small engine at the right-hand end of the line maydrive the alternator adjacent to it and the direct-current
Size: 2373px × 1053px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
