36 Book of Locomotives 



to the works, and came out later as an eight- 

 coupled tender goods engine. 



The same sort of problem in the matter 

 of a powerful engine to run upon rails, 

 which were not too well laid, had to be 

 faced on the railways of Asiatic Turkey. 

 Here the strange device of placing small 

 carrying wheels between the coupled drivers 

 was tried, and so we get a very curious 

 engine, which, though never likely to be seen 

 in Britain, nevertheless did well on the 

 lightly laid track in Asia Minor. 



Many attempts have been made to get 

 two sets of machinery operated from a single 

 boiler. By doing so a very powerful engine 

 is obtained, and the weight of a heavy 

 machine is more equally distributed. This 

 type of locomotive is known as an " articu- 

 lated >: engine, the best known types of 

 which are the " Mallet " and the " Garratt ", 

 the latter now rather more popular than the 

 earlier class. 



In the " Mallet " articulated engine two 

 sets of driving wheels and cylinders are used 

 under the boiler, each set being quite dis- 



