. The Street railway journal . th much success. Besides equal-izing the load, the battery furnishes before the beginningand after the close of the actual days service current forthe night trains, for it would hardly pay to run all the ma-chinery for such light traffic. Of recent years these bat-teries have been of twice or even three times the capacityof those first used, for it has been shown that their instal-lation was a good investment. More details in regard tothis system will be found under the heading Germany. The most notable departure in European practice fromAmerican standards is in
. The Street railway journal . th much success. Besides equal-izing the load, the battery furnishes before the beginningand after the close of the actual days service current forthe night trains, for it would hardly pay to run all the ma-chinery for such light traffic. Of recent years these bat-teries have been of twice or even three times the capacityof those first used, for it has been shown that their instal-lation was a good investment. More details in regard tothis system will be found under the heading Germany. The most notable departure in European practice fromAmerican standards is in the use of the bow instead of thetrolley wheel. During the last few years the former hasgrown steadily in favor, although it is not as generallyused as the wheel. It is claimed on behalf of the bow trol-ley that it eliminates all danger of loss of contact and thatthere is no necessity for reversing the bow when the di-rection of the car is changed. Greater contact surface isafforded and much easier spans in curves are secured,. THREE-PHASE RAILWAY, LUGANO which improves the appearance of the overhead construc-tion and greatly decreases the cost of maintenance. In or-der to allow the bow to turn over automatically when thecar changes its direction, the distance between the rail andthe trolley line ought to be as constant as possible. Euro-pean engineers who favor this form of construction say thatthere is no difficulty in doing this, and even many users ofthe trolley wheel favor the bow for lfigher speeds andheavier traffic where heavy currents are used. Europeanstreet railway engineers have not, however, always favoredthe bow construction, and this may explain the fact that itis not more generally used at the present time. When thework of the re-establishment of electric railway systems inGermany (Bremen, 1890,) was undertaken, the trolleywheel had been fully developed in the United States andhad been adopted as standard American practice. The bowtrolley at that time had not be
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
