. Electrical world. other a method patent. The specifications cover in anabridged form the specifications of the English patent, which wereprinted in full in our issue of February 13 of this year. As againstthe four claims in the English patent, the American system patentcontains seventeen claims and the American method patent eightclaims. The illustrations are the same as those in the English patent,with one exception in the system patent, which illustrates a methodof voltage regulation. Referring to Fig. I, the car transformer has two secondary cir-cuits, one of which is closed on itself and
. Electrical world. other a method patent. The specifications cover in anabridged form the specifications of the English patent, which wereprinted in full in our issue of February 13 of this year. As againstthe four claims in the English patent, the American system patentcontains seventeen claims and the American method patent eightclaims. The illustrations are the same as those in the English patent,with one exception in the system patent, which illustrates a methodof voltage regulation. Referring to Fig. I, the car transformer has two secondary cir-cuits, one of which is closed on itself and the active length madevariable by means of a switching device. The variable voltage inthis circuit may be impressed upon the motor circuit through theseries transformer diagrammatically indicated. By reversing theconnections this variable impressed voltage may be employed eitherto subtract from or add to the voltage of the motor circuit throughall of its varying values, thereby providing the necessary variation of. Governor Odell has signed the two New York City rapid transitbills passed by the New York Legislature. The bills were introducedat the request of the Rapid Transit Commission, which is now en-abled to proceed with the arrangements for the construction of an-other independent rapid transit tunnel up and down Manhattan Island. FIG. I.—DIAGRAM OF CAR TRANSFORMER. motor speed from zero to the desired maximum. It is stated thatwith this combined arrangement the motors may be designed forsuch voltage and such current as are best adapted for their oper-ation, and the controller designed for some other voltage and currentbest adapted for its operation. Instead of varying the active lengthof a portion of the main transformer winding, the magnetic relationsof the primaries and secondaries may be varied by adjusting one ofthe parts with reference to the other in a well-known manner; orsuch adjustment may be combined with means for varying the activelength of a portion of a t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
