86 Book of Locomotives 



Darlington Works of the London and North- 

 Eastern Railway, the home of many famous 

 engines of which perhaps "No. 1 0,000 J 

 may one day be written down as the most 

 famous. 



The experimental high-pressure loco- 

 motive which the London, Midland and 

 Scottish Railway decided to build in con- 

 junction with the Superheater Co. Ltd., at 

 the works of the North British Locomotive 

 Company is now running. 



The design of this locomotive follows the 

 " Royal Scot " class with regard to the 

 frame, but in this case the engine is a 

 three-cylinder compound, the high-pressure 

 cylinder being situated between the frames 

 and the two low-pressure cylinders outside 

 the frames. The boiler provided is of the 

 Schmidt high-pressure type. The design of 

 the latter is based on that of the experi- 

 mental boiler which was built for one of 

 the Continental Railways the trials of which 

 were entirely satisfactory. 



The Schmidt high-pressure boiler con- 

 sists of three distinct systems of boilers, 



