. Electric railway journal . e field control. Eachmain field coil is made up of two separate coils whichare insulated from each other but held intact as a coil does not have the same number of turns;therefore all of the four larger sections of the fourfield coils are connected in series, and the four smallerones are also connected in series. Two field circuitsare connected in series for acceleration, thus producinga strong field which results in high tractive effort. Thefield circuit containing the smaller number of turns—namely, the weaker field—is cut out of the circuit forrunning,
. Electric railway journal . e field control. Eachmain field coil is made up of two separate coils whichare insulated from each other but held intact as a coil does not have the same number of turns;therefore all of the four larger sections of the fourfield coils are connected in series, and the four smallerones are also connected in series. Two field circuitsare connected in series for acceleration, thus producinga strong field which results in high tractive effort. Thefield circuit containing the smaller number of turns—namely, the weaker field—is cut out of the circuit forrunning, giving a higher speed at any given current. Some of the advantages of field control in this motorare as follows: The accelerating tractive effort is in-creased for any given current because there are moreturns in the field coils, which gives a slower speed thanwith a motor not arranged for field control. Whenoperating on a short field—namely, with the field thathas fewer turns cut out of the circuit—the speed is in-. Field-Control Motor for Chicago Elevated Railways creased for any given current since the number of fieldturns in series is reduced and the motors thus haveweakened fields. Further, whenever field control rail-way motors are used, these equipments are very flexible,,because a car equipped with field control motors maybe used in either limited or local service without changeof gear ratio, and at the same time a large saving inenergy is effected by their use. PROPOSED ELECTRIFICATION OF LOS ANGELES& SAN DIEGO BEACH RAILWAY The Railroad Commission of California has rendereda decision under which the Los Angeles & San DiegoBeach Railway, San Diego, Cal., is to make applica-tion for extension of its franchise, agreeing, if theextension is granted, to apply for permission to is-sue bonds. The proceeds of the bonds shall be usedto electrify the road and provide better service. Thecompany now operates with steam trains and gasolinemotor cars. The company stated th
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