CHAPTER XXXVIII.

=THE LOCOMOTIVE.=

=Modern Freight Locomotive= 389, 390 General construction 389 Course of steam from boiler to smoke stack 389 Boiler feed 389 Position of parts for starting 389 Steam supply to injectors 389 Oil supply to slide valve and cylinder 389 Control of safety valve 389 Pop valve 389 Automatic air brake 390 Draught of fire 390 Sand valves 390 =American Passenger Locomotive= 390 to 393 General construction 390 Steam reversing gear 390, 391 Link motion in full gear forward 391 In mid gear 392 In full gear backward 392 Reversing gear 392 Changing gear of link motion 393 Running forward 393 Running backward 393 =Special Operations= 394 Setting the slide valves 394 Getting the length of eccentric rods 394 Setting the lead 394 Backward eccentric 394 Marking sector notches 394 Setting Allen valves 395 =Special Parts= 395 to 400 The injector 395 to 397 Westinghouse automatic air brake 398 to 400 =Locomotive Running= 400 to 404 General discussion 400 Getting the engine ready 400 Laying the fire 400 Banking the fire 401 Starting up a banked fire 401 Examining the engine 401 Oiling the engine 401 Starting the engine 401 Saving fuel 402 Methods of firing 402 Examples of trips 402 =Accidents on the Road= 402 Knocking out cylinder heads 402 Heating of piston rods 403 Throwing off a wheel tire 403 Throwing off a driving wheel 403 Breaking a spring 403 Bursted tubes 403 Slipping eccentrics 403 Hot axle boxes 403 Breaking a lifting link 403 Breaking the saddle pin 403 Adjusting the wedges of the axle boxes 404