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‘HOW TO BECOME AN ENGINEER. 13
Tn America our locomotives are built with long boilers
and have a general trim appearance.
Some have two driving wheels, others, still longer, have
four: We illustrate both of them. |
English locomotives present a clumsy appearance along-
side the American.
For us to attempt to decide which is the best, would be
the height of presumption. ,
-Certain it is, however, that English locomotives do run
at a greater average speed than those in the United States.
We will now proceed to describe by tabular arrangement,.
an English locomotive.
This. description will practically describe the American lo-
_comotive ag well.
-Wecannot enter into a detailed description of both for
want of space, and select therefore the machine which has
attained to the highest speed.
We will first look at the outside of the locomotive.
1, 2, 3, Barrel of Boiler, 6, Smoke-box. 22, Smoke Stack,
32, Spring balance.
33, Whistle. 34, Dome. 64, Exhaust pipe. 70, Cab..
85, Brake blocks. 87, Life guards, , 88,. Trailing axlefand
Wheel. 59, Heading axle and wheel. — 54, Driving axle. °
O, Speed indicator. P, Splasher. S, Sand-box. T, Tool- -
box V, Safety valve. W, Balauce-wheel. Yo.
Let us now’take an inside view of the locomotive. Com-
pare the numbers carefully with the cut, and take time to
ok what you are doing, otherwise don’t read this part at
all.
1, 2, 3, Rings arranged telescopically, forming
barrel of boiler. . 4, Solid angle-iron ring. 5, Tube
plate. 6, Smoke box. 7, Shell, or covering ‘plate.
8, Foundation ring. 9, Throat plate. 10, Back plate.
11, Fire door. 12, Covering plate of inside fire-box. 13,
Tube plate. 14, Back plate. 15, Stays. 16, Mouth-piece.
17, Stays from inside fire-box to shell plate. 18, Palm stays.
19, Tubes, 20, Smoke-box door. 21, Finching screw. 22,
Chimney, - 23, Chimney. cap. 24, Blast pipe. 25, Top of
blast pipe. 26, Balance weight. 27, Wheel spokes. 28,
Front puller, 29, "Mud plug. 30, “Safety valve. 31. Safety lever. °
2, Spring balance. 33, Whistle. 34, Dome. 35, Reeulator.
38 Steam pipes. 37, Elbow pipe. 38, Brick arch. 39, Fire
bars. 40, Ash pan. 41, Front:damper. 42, Back damper. .
43. Frame plate. 44, Iron .buffer beam (front). 45, Tron
buffer beam (back). 46, (See half width plan) cylinder. 47,
Cylinder posts, valve. 48, Valve chest. 49, Steel motion
plate. 50, Horn blocks. 51, Axle» boxes. "52, Slide bars,
53, Connecting rod. 54, Crank shaft. 65, Crank shaft, big