Yorkville enquirer. [volume] (Yorkville, S.C.) 1855-2006, 1909-06-15
The waist-bearer under the COM

The waist-bearer under the COM
bustion chamber is bolted into place,
while the front waist-bearer and the
high pressure cylinder saddle are riv-
eted to the shell. The dome, which
is of cast steel, Is placed Immediately
above the high pressure cylinders, and
the arrangement Of the throttle and
live steam pipes Is similar to that
used on heavy articulated locomo-
tives previously built at these works.
The exhaust from the high pressure
cylinders passes into two pipes which
lead to the superheater. The steam
enters the superheater at the front
end of the device and passes success
lively through six groups Of tubes. 1t
then enters a T connection, from
which it is conveyed to the low pres
sure cylinders through a single pipe
having a ball joint at each end and a
slip joint in the middle. The steam
distribution is controlled by 15-inch
piston valves, which are duplicates of
those used on the high pressure CYL
inders. The final exhaust passes out
through the front Of each casting, in
to a T casting which communicates
with q flexible pipe leading to the
smoke-box. The slip joint in this
pipe is made tight by means Of snap
rings and leakage grooves. At the
smokebox end the ball joint is fitted
with a coiled spring, which holds the
pipe against its seat.
Reversing is effected by the Rag
gonet power gear, which is operated
by compressed air and Is self-locklng.
The gear is directly connected to the
high-pressure reverse shaft. The
reach rod connection to the low
pressure reverse shaft is placed on the
centre line of the engine, and is fitted
with a universal joint located imme-
diately above the articulated frame
connection. The joint Is guided be-
tween the inner walls Of the high
pressure cylinder saddle. In this way
the reversing connections are simpli-
fed, and when the engine is on a
curve the angular position Of the
reach rod has practically no effect on
the forward valve motion. This ar
rangement has been made the sub
ject of a patent.
One Of the locomotives Is equipped
with vanadium steel frames, and the
ath Wi f~oY
The connection between the frames is
single, and is effected by a cast-steel
radius bar, which also constitutes a
most substantial tie for the rear end
of the front frames. The fulcrum pin
is seven inches in diameter; 1t is in
serted from below, and held in place
by a plate supported on a cast-steel
crosstie, which spans the bottom rails
of the rear frames between the high
pressure cylinders.
The weights on the two groups OF
wheels are equalized by contact be-
tween the front and rear frames, no
equalizing bolts being used in this de-
sign. The front frames are stopped
Immediately ahead of the leading
driving pedestals, where they are Sc
curely bolted to a large steel box
casting, previously mentioned, which
supports the low-pressure cylinders.
The boiler is supported on the front
frames by two bearings, both of
which have their sliding surfaces nor
mally in contact. The front bearing
carryed the centering springs, and the
wear is taken in each case, by a cast
iron shoe two inches thick. Both
bearings are fitted with clamps to
keep the frames from falling away
when the boiler Is lifted.
The locomotive is readily separable
as the joint in the boiler is but short
distance ahead of the articulated
frame connection and all pipes which
pass the joint are provided with
unions.-Scientific American.