394 



EXPLANATION OF THE PLATES. 



F, Steam-pipe from boiler. 



G, Stop valve. 

 H, Cylinder. 



I, Belt round the cylinder, to bring the 



steam into the valve case. 

 K, Slide valve. 

 L, Steam ports. 

 M, Piston. 

 N, Eduction pipe. 



0, Feed pump. 



P, Feed pipe. 



Q, Water cock. 



R, Clack valves of feed pump. 



S, Connecting rod. 



T, Eccentric, for working the slide valve. 



U, Eccentric rod for ditto. 



V, Governor wheels. 



W, Governor. 



PLATE LXIV. 



ELEVATION OF LOCOMOTIVE ENGINE, STANHOPE- AND TYNE RAILWAY; CON- 

 STRUCTED BY MESSRS. ROBERT STEPHENSON AND CO., OF NEWCASTLE- 

 UPON-TYNE. 



This plate exhibits a general elevation of the engine without the tender. It 

 should be observed, that the construction of locomotive engines has undergone con- 

 siderable variation in external form and detail since the establishment of the Liver- 

 pool and Manchester railway. The particular form and arrangement of engine 

 represented in the accompanying engraving is such as was adopted on this railway 

 about the year 1834. The following is a general table of the dimensions of the 

 various parts. 



Ft. In. 



Diameter of boiler 36 



Length of ditto ........ 80 



Length of fire-box outside ...... 37 



Breadth ditto . 40 



Depth below boiler 23 



Length of inside fire-box . . . . . . 2 11^ 



Breadth of ditto 3 7 



From top of bars to crown of fire-box .... 3 5f 



Area of fire-grate in square feet . . . . . 10 7 

 Length of smoke-box . . . . . . . 2 If 



Breadth of ditto . 4 1| 



Depth below boiler 25 



Diameter of chimney ....... 12 



Height from rail 140 



