Building of a Locomotive 123 



it draws the hot gases from the fire-box up 

 the chimney as it goes, thus creating a 

 powerful draught. That is why the fire of 

 a locomotive is always seen at a glowing 

 heat, instead of like most of our fires, rather 

 smoky and often dull. Timothy Hackworth 

 was probably the first engineer to use the 

 steam blast in the early days of the Stockton 

 and Darlington, though Trevithick had in 

 his first locomotive, turned his waste steam 

 into the chimney to get rid of it. 



The puff-puff of the locomotive is so 

 familiar to us as the exhausted steam gets 

 to the open air that it comes as something 

 of a shock to find that the new experimental 

 turbine engines, which are being tried out 

 in various directions, are puffless if such 

 a word may be allowed. 



It is necessary to have some means of 

 forced draught in most of the turbine types 

 so far evolved and the steam fan is fre- 

 quently employed for this purpose. 



The difficulty found with the steam blast 

 throughout all the years which have passed 

 has been its liability to take up and expel 



