Evening star. [volume] (Washington, D.C.) 1854-1972, 1881-07-02
Are you ready, sir?"
"Y.y-yeS-yes, STR"

Tho people stood looking on, and quite ready
70 iaugh &C the poor boys failure. All. she
moves. The big wheels turn slo Wy. and the
coid ara Silent engine rolled slowly backward.
For an instant there was laugh. She was
gong the wrong way. She moved faster and
Ias1er, and the laugh died away. All she's
NO. Tom could be seen turning the reversing
par. The engine gave one loud whistle and
started ahead. Faster and faster! On it came,
hour. How the people cheered and cheered
IL was wonderful Tom was looking straight
ahead, like good engineer. The ladies waved
. .helr nandkerchiefs and the boys shouted until
prize. WA WIG
The engine ran on about half mile, stopped,
ana then came slowly back. and stopped tust
DeIofe the PRESIDENTS pretty daughters. Tom
came 10 the window, aud took OF his hat and
bowed politely to the ladies'.
HOW much pressure have you. Master Eagi-
neer 2" said the president.
T-t-twenty-20 pounds, SIR"
Inf q the school gave three cheers for Tom,
ana tnree more for the president. for every one
write tie best composition ever seen. Or course
every ore wished to know just how 1t was done.
aso TO make 1t all clear, the president m 1unted
Fne e OF s,eepers ana told them the whole story
and furnace, or flre-box. Water Is put In the
oolier, and fire is made In the furnace precisely
IS as IN tsa.kettle on stove: The water bolls In
the tea kettle, and we see the steam escape. In
the engine the steam Is locked In, and cannot
Escape, and very soon 1t becomes crowded and
y. sun so Kept locked IN; 1t VIII burst the boiler
valve. and permits the steam to enter two ob-
long iron boxes called the cylinders Here 1t
meets q piece Of metal, called the piston, that
nus the inside OF the cylinder pretty closely. 1t
cannot get past. and SO It puahes the piston
away 10 the other eud OF the cylinder. As soon
as this happens the valves close OF their own
accord and the steam escapes into the open ar
with loud pun. Then the steam enters the
other end OF the cylinder and drives the pis.
ION pack again. III this manner the steam
pushes the piston to and fro as 1t tries to escape
Now there is rod fastened to the piston.
and passing through the end OF the cylinder.
Eacn cylinoer has one, and these are oonnec Led
Dy means OF other rods with the great wheels
OF the locomotive. You now see that the PTS
ten, driven forward and backward. moves the
wheels, and thus 1t Is the escaping steam moves
the engine. These rods you can see outside the
ems ine; the piston and valves are inside, out oil
sight.
te used In any engine In place of steam. II ali
Is pumped into tight box like boiler 1t may
De locked up or compressed, and II We were Ia
go On pumping, we might burst the boiler with
and he also knew that when an empty engine
as happened on our ride out here, the wheels
Will turn round, and these move the rods and the
Plstols ana each cylinder works like pump.
instead OF letting steam OUT, It pushes air back
into the boiler, and very soon the boiler is full
OF elastic compressed air struggling to get out.
master stay OolIt, as soon as the train stopped,
opened the valves, and the air rushed out the
way 1t went In, making the pistons move, and
the wheels turn round. OF course the air soon
ran out, and the engine stopped, This made
NO difference to US, for Master Stayboltt early
showed that he had learned his lessons well.
and knew how to apply them"
Then the presidents youngest daughter
clin bed up into the engine, and gave Tom the
pl1Ze watch. The boys took him on their
shoulders In triumph to the presidents car.
every one got ON board, the nag men were
called In, and the entire party went gayly home
With the empty engine trailing behind.