. The Street railway journal . FIG. 6.—SHORT GEARLESS MOTOR—1891 in 1891 and 1892. But the developments of the last year or so—the experiments and the still more recent NewYork Central locomotive—demonstrate that there is still a fieldin the future for the gearless motor. Steel castings for motor frames were introduced in 1891 onthe T-H. W. P. motor. The GE 800 motor of 1893 presents some interesting fea-tures; the frame, made of steel casting, entirely enclosed theworking parts of the motor. Gaskets under the covers and sealedjoints protected the motor to such an extent that it
. The Street railway journal . FIG. 6.—SHORT GEARLESS MOTOR—1891 in 1891 and 1892. But the developments of the last year or so—the experiments and the still more recent NewYork Central locomotive—demonstrate that there is still a fieldin the future for the gearless motor. Steel castings for motor frames were introduced in 1891 onthe T-H. W. P. motor. The GE 800 motor of 1893 presents some interesting fea-tures; the frame, made of steel casting, entirely enclosed theworking parts of the motor. Gaskets under the covers and sealedjoints protected the motor to such an extent that it was hopedit would be absolutely waterproof. This feature, however,never was a marked success, as the lack of ventilation anddrainage was the source of troubles which soon caused a re-action from this type of motor toward a more open type andone more capable of long-time service. Another feature whichwas introduced in the motor was the Eickemeyer coil, all the. FIG. 7.—GE 2000A MOTOR—1S99 armature coils being symmetrical and interchangeable aroundthe circumference of the armature. The name GE 800 was based on the fact that at its normalhorse-power the motor would develop a draw-bar pull of 800lbs. when running at 10 miles an hour, and marks the first at-tempt to establish an accurate commercial rating for railwaymotors, a subject which had been more or less indefinite up tothis time. In 1894 the GE 2000 introduced a still further improvementin symmetrical armature windings; the coils of this motor were 554 STREET RAILWAY JOURNAL. [Vol. XXIV. No. 15. made of solid strap copper, one turn per bar, carried straightout on the back end of the motor and the corresponding coilssoldered together with clips, thus making a barrel windingwith an approximately flat diamond shaped coil. Directly afterthis the Westinghouse 12-A and Walker motors appeared withcoils of this diamond shape, wound of several turns of con-tinuous wire, a characteristic which
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
