Albuquerque morning journal., 1910-12-02
t Headquarters for Toys Dolls, Fine China
&c, DC and l &c Goods
Mail 3"sie1 ss h"'y THE LEADER 0'''' X7THa WzS CENTRAL

put into pusher service on the 90
mile Arara, grade a number of test
runs were made. which proved that
single Erie arueulatcd locomotive
easily aid the work cf two class Els
consolidation locomotives. Following
these tests six articulatcd loeomo-
tives were ordered from the Ameri-
can Locomotive company and put into
this service
These engines. the design of which
Is here illustrated. are of the oSS0
type The design is based on the
Erie articuated locomotive with So
GOO pounds increase in weight and 10
per cent more power. thus giving a
good margin Of power To meet the
varying conditions OF the service on
the Delaware and Hudson railroad,
IN working order, they have q
total weight of $4,000 pounds, all Of
which Is carried on the driving
wheels The high pressure cylinders
are % inches In diameter by 2S
inches in stroke, and the low pres
sure cylinders are Al inches in dianl-
cter by the same stroke. With the
boiler pressure OF 22O pounds and
driving wheels 81 inches IN diameter
the theoretical maximum tractive
power working compound, calculated
BY the American Locomotive CONS
panyr formula Is l05.0oO pounds
AS this formula, which is applicable
only To artieulated locomotives built
| hy the American Locomotive com
| pany, is hosed an the resdlts obtained
from a large number oi indicator
| cards, taken under various service
| conditions. IL Is found that the trac-
! tive power thus calculated repre-
seuts worry accurately the actual
power that the locomotive can de-
velop pt piston speed OF not over
250 feet per minute.
with the American Locomotive
companys system oi compounding.
/ the normal maNimum tractive power
working compound can be increased
about % per cent by changing into
simple The maximum tractive power
! Of these engines. working simple is
thus 10000 pounds. with the same
| average weight per driving axle and
II rigid wheel base feet Q inches
shorter, these articulated locomotives,
thus under normal working eondl-
tions have over twice the power OF
| lhc cuss E-5 consolidation leeomo-
! tives and. In case of emergency, can
/ exert tractive power more than two
| and one-half times as great as the
| latter. one of these engines as q
pusher ana a class E-5 locomotive In
| the lead will easily take q 2,600-ton
train mp the grade. where it prov
louslN took three class Ic-5 locomo-
| tiycs The six articulated locomo-
| lives In this order viii therefore, re-
| lieve twelve Of the consultations
! from this service without sacrificing
any tonnage and with y saving In
operating expenses due tc handling
less units As far ms the essential
details Of the articulated type Of en-
! glne are concerned. the design of
the locomotives here described is
| practically identical with the we'll
! known articulated engine butt BY tho
| American Locomotive company Tor
the Baltimore ana Ohio railroad--the
| first type constructed for service In
| this country During the six years
service of this latter locomotive, all
of the essential features have proved
! perfectly satisfactory The enormous
size of the locomotives here Illus
| trated has. however. nccesstated sew
eral notifications In the general de-
sign from that OF previous articulated
| locomotives built by the American
! Locomotive company