How Engineer Helps Railway 167 



M. Moyse has adopted electric trans- 

 mission, and has thus secured traction units 

 which possess practically the elasticity of a 

 steam locomotive. The power unit of the 

 new locomotive tractor consists of a four- 

 cylinder Panhard-Levassor petrol motor; 

 this drives direct an electric generator of 

 Thomson-Houston construction, which 

 delivers direct current for operating the 

 two closed motors, one of which is 

 applied to each of the two axles of the 

 locomotive. 



By the adoption of this electrical manoeu- 

 vring gear, the locomotive can exert a haul- 

 ing effort up to any figure within 10,000 Ib. 

 in either direction forward or backward. 

 In addition it can exert a maximum trac- 

 tive effort at three miles per hour of nearly 

 9,500 Ib. In running order the weight of 

 the locomotive tractor is 20 tons and it 

 works up to a maximum speed of 15 miles 

 per hour. The total length over buffers is 

 22 feet, while the wheel-base is 9 feet only. 

 Under test it has been found that this 

 handy machine can handle satisfactorily a 



