THE LOCOMOTIVE. 



Number of I Letters of 



The water gauge, being a glass tube communi- 

 cating above and below with the interior of 

 the boiler, in which the water stands at the 

 same level as in the boiler . . . . 



Gauge-cocks, which serve a like purpose, one 

 being below and the other above the proper 

 level of the water. If the water be below 

 the proper level, steam would issue from the 

 lower, and if above it, water would issue 

 from the upper cock ..... 



The feed-pump, being a force-pump worked by"") 

 the engine, by which water is forced into the I 

 boiler from time to time to replace that which f 

 is evaporated . . . . . . -. 



The feed-pipe, leading from the feed-cistern on 

 the tender to the feed-pump 



The levers by which the engine driver governs the 

 feed. These open or close the feed-pipe accord- 

 ing as they are turned one way or the other. 

 When the engine driver sees the level fall too 

 low in the water gauge or by the gauge-cocks, 

 he opens the feed-pipe by these cocks and 

 puts on the feed, and when it has risen to 

 the proper point he closes them. There are 

 usually two feed-pumps, with their appen- 



The smoke-box door, opening on hinges at the top 

 by which that part of the engine may be 

 cleaned ....... 



The buffers, being circular cushions fixed upon the 

 ends of strong iron rods, which re-act against 

 spiral springs, to break the force in case of 

 collision ....... 



The heads of the cylinders, which are secured by 

 bolts and nuts, and can be taken off for the 

 purpose of cleansing the ash-pit 



The feeding cistern on the tender 



The feed-pipe proceeding from it . . . . 



The coupling of the parts of the feed-pipe attached 

 to the engine and the tender 



The coupling bar of the tender and engine . . 



The coupling chain of tender and train 



The buffers of the tender . .... 



The lids of the feed-cistern .... 



The handle of the brake upon the tender . . 



The space for coke 



128 



