ELECTRICITY AT THE WORLD'S FAIR. 



-31 



power for light passenger and freight traffic. It is mounted on 

 four forty-four-inch wheels and is propelled by two gearless 

 motors suspended in such a way as to leave the wheels free to 

 adjust themselves to the irregularities of the roadbed. This 

 method of suspension consists in mounting the motors upon spiral 

 springs resting on the side frames of the locomotive truck, and 

 the armatures upon hollow shafts through which the axles of the 

 wheels pass, the connection between the two being made by uni- 



Jrio. i. — General Electric Thiety-tccn Electric Locom^tivz. 



versal couplings. The commodious cab is constructed of sheet 

 iron, finished in the interior in hard woods, and is given a curved 

 shape to diminish as far as possible the air resistance. The brak- 

 ing power is furnished by compressed air supplied by a special 

 electrical air compressor, and the whistle is operated by the same 

 means. The use of the electric locomotive is not yet practicable 

 on long lines on account of the great cost of long feeders, but this 

 bar to its employment is certain to be overcome in time. Wher- 



