. Journal de chemin de fer électrique . utilisation,montrant le toit de Truss et les colonnes d'acier la connexion entre les deux sections sera faite au moyen d'un ferry à travers le lac. La principale activité du chemin de fer est le transport de notodden de salpeter artificiel fabriqué à Saaheim.les trains, avec un poids de remorque maximum de 290 tonnes métriques, sont tirés sur la section de Notodden à Lilleherred (qui a une pente constante d'environ 2.7 pour cent) par des véhicules à deux circuits, une locomotive est utilisée pour les autres sections. Trois locomoteurs à quatre essieux et deux essieux ont été fournis. Les premiers ont deux chariots à deux essieux, sont f

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. Electric railway journal . use, Showing Truss Roof and Steel Columns nection between the two sections will be made by means ofa ferry across the lake. The chief business of the railway is the transport toNotodden of artificial saltpeter manufactured in Saaheim.Trains, with a maximum trailer weight of 290 metric tons, are drawn on the section from Notodden to Lilleherred(which has a constant grade of about 2.7 per cent) by twolocomotives, one locomotive being employed for the othersections. Three four-axle and two two-axle locomotiveshave been supplied. The former have two two-axle trucks, are fitted with four 125-hp alternating-current motors andweigh approximately 46 tons. The two-axle locomotiveshave two motors of the same size and weigh about 23 tons.The locomotives are constructed for a line potential of 10, -000 volts to 11, 000 volts and 15 cycles to 16 cycles and areprovided with contactor control. The overhead suspension is of the. single catenary typewith a steel messenger of 31.5 sq. mm (No. 2 B. & S.). Rjukan Railway—Single Catenary Construction from Bridges at Stations has a maximum length of 659 ft. and a maximum width of347 ft. 9 in. It has twenty through storage tracks and threetwo-car shop tracks. Ladder tracks and loops permit anydesired car shifting within the yard limits. About 280, 000passengers a day are handled in cars run from this station. cross-section, a contact wire of 65 sq. mm (No. 00 B. & S.)cross-section and hangers of 3-mm (0.09-in.) diameterwith top and bottom clamp installed at intervals of 16 ft.5 in. At crossings and stations the spacing betweenhangers is reduced to 8 ft. to insure greater safety. The OCTOBliR 4, 1913.] ELECTRIC RAILWAY JOURNAL 647 normal clearance between the top of the rails and thecontact wire is 18 ft., but it is as low as 14 ft. 9 in. fortunnels, bridges and yards. Equal wear of the bow col-lector is assured by zigzagging the contact wire 17^4 in.from the center line. Along the right-of-way the overhead line is

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