1 68 Book of Engineering 



load of 700 tons on the level at an approxi- 

 mate speed of 3 miles per hour, a speed, 

 by the way, which is adequate for most 

 shunting work. 



The locomotive tractor has also been able 

 to deal with a load of 150 tons up to a 

 grade of i in 50. 



The new machine has been designed to 

 conform to all the requirements of the 

 standards laid down by the Berne Conven- 

 tion. In order that the locomotive tractor 

 may be efficiently braked, Westinghouse air 

 brake apparatus is provided; in order that 

 shunting may go forward in darkness, 

 the machine is adequately lighted by elec- 

 tricity. Special attention has been given to 

 the provision of an efficient lubrication 

 system; all fittings for this purpose have 

 received most careful supervision. 



In many directions efforts are being made 

 to supplant the steam locomotive, and it 

 would seem that for shunting duties at any 

 rate, the internal combustion machine is 

 likely to prove the most suitable substitute. 

 Thus compared with the steam locomotive, 



