. The Street railway journal . should be said concern-ing the reliability of the apparatus inservice—for this is the final measure of merit. During the first years of its introduction, the most serious ob-stacle against the adoption of multiple control was the apparentcomplication of the system, which suggested a doubt as to whetherit could ever be operated with as few failures as the simpler appar-atus of hand control. The experimental stage is now past, however,and in the more modern types of multiple control it is safe to saythat the apparatus is fully as reliable in operation as hand contr
. The Street railway journal . should be said concern-ing the reliability of the apparatus inservice—for this is the final measure of merit. During the first years of its introduction, the most serious ob-stacle against the adoption of multiple control was the apparentcomplication of the system, which suggested a doubt as to whetherit could ever be operated with as few failures as the simpler appar-atus of hand control. The experimental stage is now past, however,and in the more modern types of multiple control it is safe to saythat the apparatus is fully as reliable in operation as hand control,and it has the ability of handling much larger current values. Onthe Manhattan Elevated Railway, in New York, where there areover 800 motor cars in daily service, the number of delays to ser-vice chargeable to failure of control apparatus averages onlyabout five per month. It is the practice to inspect the control ap-paratus on this road once every three days, and except for occa-sional cleaning, little work is WESTINGHOUSE UNIT SWITCH GROUP TYPE 253, REAR VIEW, COVER REMOVED Some of the large roadsamps continuous-carrying In conclusion, the writer would express the hope that this papermay serve to emphasize the merits of the multiple control systemfor many interurban and street railway lines where the limitationsof hand control have stood in the way of the best service and mostcomplete development of the property. The ability to run cars intrains of any desired length, without reduction in speed, and with-out overloading the motors; the advantage of limiting the currentduring acceleration to a predetermined value, and the decreasedfire risk by placing the control apparatus under the car, are featuresof the multiple control system which warrant the attention of allprogressive railway men. September 30, 1905.] STREET RAILWAY JOURNAL. 569 THE SERIES-PARALLEL RAILWAY CONTROLLER BY W. A. PEARSONElectrical Engineer, New York City Railway Company When the first elect
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
