. Electric railway journal . P. L. M. Locomotive—Plan of Motor, Showing Methodof Gearing to Axle. (All Dimensions Arein Millimeters.) each driving axle and 16 tons on each bogie truck axle. Each driving axle is driven by a 300-volt, direct-current,six-pole, series motor having a i-hour rating of 400 hp ata speed of 650 , corresponding to a speed of the loco-motive of about 63 km (40 miles) per hour. The two motorsof each half-unit are connected in series. The armaturesof these motors are not mounted parallel to the driving axlebut are at right angles thereto and are connected to thedrivi
. Electric railway journal . P. L. M. Locomotive—Plan of Motor, Showing Methodof Gearing to Axle. (All Dimensions Arein Millimeters.) each driving axle and 16 tons on each bogie truck axle. Each driving axle is driven by a 300-volt, direct-current,six-pole, series motor having a i-hour rating of 400 hp ata speed of 650 , corresponding to a speed of the loco-motive of about 63 km (40 miles) per hour. The two motorsof each half-unit are connected in series. The armaturesof these motors are not mounted parallel to the driving axlebut are at right angles thereto and are connected to thedriving axles by bevel gears as shown in one of the draw-. P. L. M. Locomotive—Side View of Double Unit Permutator Locomotive One air compressor equipped with a single-phase syn-chronous motor. One auxiliary motor-generator for starting the syn-chronous motors of the permutators and providing directcurrent for the auxiliary equipment. The apparatus for the control of the collectors, high-ten-sion switches and the speed of the driving motors is locatedin the cab of each locomotive. Each half unit is equipped with a Westinghouse panto- ings. Each motor is supported over its center of gravityby a yoke with spiral springs. permutators The permutators, of which there are two on each half-locomotive, differ somewhat from those first brought outby the inventors and described in the article previouslymentioned. The two direct-current commutators of eachpermutator are connected in series instead of in parallel, asin the first machines. The terminal leads of the two per- 386 ELECTRIC RAILWAY JOURNAL. [Vol. XXXVIII, No. 10. mutators are also connected
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