. Electrical world. sary in this system. Even if they should be soimproved as to have a starting torque equal to that of direct currentmotors, it is likely that a variable ratio process would still be worthusing, especially on lines with frequent stoppages. He closes bysaying that sufficient has been said to show that the system possessesgreat flexibility, and offers at least a practicable solution of the prob-lem of a comprehensive general system of electric traction for rail-ways. Mr. P. E. Huber, before the Zurich Association of Engineers andArchitects, has set forth the advantages of the W
. Electrical world. sary in this system. Even if they should be soimproved as to have a starting torque equal to that of direct currentmotors, it is likely that a variable ratio process would still be worthusing, especially on lines with frequent stoppages. He closes bysaying that sufficient has been said to show that the system possessesgreat flexibility, and offers at least a practicable solution of the prob-lem of a comprehensive general system of electric traction for rail-ways. Mr. P. E. Huber, before the Zurich Association of Engineers andArchitects, has set forth the advantages of the Ward Leonard sys-tem, and he gives some very interesting figures with reference toweights. He puts the weight of the locomotive at 44 tons, and statesthat a three-phase locomotive of equal power would weigh only about30 tons. He holds that this advantage of weight is more than oflsetby the difficulties arising in connection with the trolley wires of a?three-phase system. Mr. Rubers paper was read February r8, FIG. 5.—ELEV.\TIOX AND PLAX OF LOCOMOTIVE. and at that time he did not have at his command data with referenceto the additional weight and complication required by the multipleunit system, which would have naturally added further to his remarksin favor of the flexible controller ofltered. During the latter part ofthe year 1902 the Royal Commission of Swedish Engineers reportedto the Crown upon the practicability of substituting electricity forsteam power, and after carefully considering the various single-phasesystems then extant, reported in detail upon the Ward Leonardsystem. This report was reported in the Swedish periodical, Tek-iiich Tidskrift, of January 10, 17 and 24, 1903. and after making everyproper allowance for the cost, operation and installation of the WardLeonard system, a net yearly saving was estimated at $2,000,000. De-tails on the subject were given at the time in the pages of the Elec-trical World and Engineer. In connection with the Oerlikon wo
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
