Union Pacific Locomotive #119 and Central Pacific Locomotive #60 ...

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rectly by the moving machinery of the engine, and
which, by their adhesion to the rails, propel the enginb
along. ,-• . . '•:
Eccentrics.—See Cam. •••'.:
Pmi.—A passage.on side of cylinder to Ieacl
aw.ty the waste steam from same, to the blast pipes. :'
Equalizing Lever.—A bar suspended by its eentve, beneath
tho frame, and connected at each end to the springs
of the drivers, to distribute any shook cr jolt between both
pairs of wheels. • ' .1^
Expansion Valve.—See Cid-qff', ' '
—The furnace, of the boiler. :
Foaming.—An. artificial excitement, or too great ebullition
on the water-level, observed .when the boiler lifts
become greasy, or otherwise foul. Generally pi'oduetive
of priming.
Footboard.—A plate iron floor, behind the toiler, for the
ehgineraan and fireman to stand upon.
Frame.—Made to attach to the boiler, cylinders, axles,
and al! cross shafts, and binds th»: whole fabric together.
Friction, of Trains.—The friction of the 'bearings of the
carriages, and for every ton drawn, offers a direct resistance
of from seven to ten pounds; . ' .
Frost Cocks.-—Cocks to admit steam to the feod pipes
leading from the tender to the pump;' used when the
water becomes frozen. . . . .
. Gangs Cocks.—Cocks at different levels on the side of
the fire-box, and to ascertain the height of water in the
boiler. When opened, water or-steam'will escape, according
as the level of (tic water is above or below them.
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Glmid.—A. bushing to secure the packing in a stuffingbos.
Grade.—The inclination of a road ; expressed either by
the number of feet rise per mile, or by.naming the distance
passed in rising one foot; thus, a grade of 1 in .330,
which is 16 feet per mile. . : ' •
Gravity.—The tendency which all'bodies have to find
the lowest level. The resistance in pounds, occasioned by
the gravity of. one ton on any grade, may be found by tnul-''
tiplylng the grade, in feet per mile, by the decimal number
•4212.
Grate.—The parallel bars supporting the fuel in thefire-box.
. • :
Guides.—Rods, or bars, lying in the direction of the
axis of the cylinder, and giiiding tlie cross head, to insure
n perfectly parallel motion in the piston rod. • ,
Sand Zevers.—Levers to work the main valves' by
h a n d . . • ' • • - . • . • . ; .
Housing.—-See Jaw. •. "'•...' • ' • •
Induction Forts,—T\vo passages on side of cylinder, to
admit steam within it,—one port communicating with
each end. . .
Jaw.—A stand secured to the frame, to holo! the box of
an axle. The jaw must allow the bos to slide up and
down within it. ' '. • .
\ Journal.—The part of 3 shaft or asle resting in the
. Lagging.—-A wooden sbeathing arotrnd a boiler or
cylinder.
Lap.—The- distance which the valve overlaps on eaeii
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