Las Vegas daily optic. [volume] (Las Vegas, N.M.) 1880-1908, 1907-03-15

9ay gives al illustration aal the f0s-
account u = locomotive whacA
- As exhibited at Sarnberg, This loc"
l~a.e'tls~ ia designed expressly for Z
Spt@d 0f - miles an hoaE
Judging trum the previous results oh
with the remarkable l0~osmo
u the same builder. j. A. Mafea.
VI Munich. II Is highly probable that
Ibis speed can be maintained and al
In practical trials. II Is quite
another matter however whether la
vaTiaa state railways are suited far
such abnormal vel0cities in ordinary
service, We're this so. Ne should
lOag sine" heard f +xtra
ordinary high speeds In the south and
west German states. Already SPEEDS
a 30 miles per hour with a train NJ
I3S carload have been attained IN a
slightly rising gradient. by Mattel Al,
lantic" type locomotives that werr
built for maximum speeds OF oai, Is
miles per hour. Such engines were
In the high.speel locomotive trials
of March. 1904. but they exceeded for
speed and tractiye power the results
obtained from other engines on the
special Marienfelde TO Zossea line.
and. In fact. accomplished some of the
fastest runs that had been made In
Europe up TO that period. The new
engines resemble somewhat the 40
Thule locomotive Of 1900, AL the
constructive details are very fine: he
work. In fact. approaches as near 10
motor car practive as 10 permissible
In railway engines.
The new high speed engine has four
cylinders. compound. with the low
pressure outside as usual, and all
bottled together In one transverse line.
There 10 one driving axle only. and
the driving mechanism Is nearly per
lfectly balanced. The small counter
weights In the driving and coupled
wheels show to what extent the re-
lvolving masses have been made self
balancing. The fine proportions OF
the driving and coupling rods con
Tribute to the elimination OF disturb
ing forces.
The piston valves are Of large size,
and have the great length usual with
doubled ported distributors. At each
lend Of the low-pressure valves are two
small cylindrical valves connected
with the expansion gear. and these
lopen when the cutoff exceeds 70 pei
cent of piston stroke. as In starting
land thus admit high pressure steam
Ito the low-pressure valve chests until
1.-The engine has been geared up to less
THAN 20 per cent. There Is n SCI
lonly Of valve gears for four valves
land no in%tercepting valve Is intro
duced.
Rar frames have been employed fol
reasons OF economy In weight In
lcidentally these frames permit o'
ready access to all working parts
placed between them. Even the coup
ling rod on the opposite side of the
~engine Is discenible through the driv
ing wheels.
All parts ofthe engine presenting
broad surfaces at right angles to Tho
Iengine have been clothed In such wa,
that they clear the air. and reduce
1.-The head resistance when travelling
at high speed. Careful experiment.
ion the continent and elsewhere have
proveh the real saving of power thu
~ealizcd. 1t may be added here tina
the engine is of great l~ength-i5 fee
2 inches-with u height to the boile'
"lcentrr of about . feet and Il tota
height of Is feet,
The high pressure cylinders have
greatcr volume than those OF an,
Iother European locomotive. including
1.-THE new Belgian engines. hut tn,
boiler pressure of 4,4-4 engines ha'
been reduced to 30 pounds less thar
that Of the most recent saturated
steam locomotives OF the Bavarial
railways. The ratio Of volumes. high
Ipressurc to low-pressure cylinders
Tho ratio of volumes. high pressure
to low pressure cylinders, has, at tn
same time, been decreased. The driv
ing wheels are the largest that hav'
pressure to ~low-pressure cylinders
compounds on the European cont
nent. The principal object I'm the dc
sign Is high speed with a freight load
for which the 70 tons maximum ad
hesive power will be fully adequate
Compromising and superheating are In
Itroduced as contributing to this end
while the total mechanical efficienc.
Is increased at the cost OF some few
tons Of weight extra, which has. II