New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1872-11-19
WArER JOCKS IN CHICAGO.

THE LARGEST PUMPING ENGINE N TUT WORLD.
Chicago is fairly bubbling over with happi-
ness and water She the largest water pump
ing engine in tho world It was finally tested satur-
day. aud found work perfectly. There really two
engines connected by q single shaft with cranls and
y-whees The two steam cylinders are each 20 inches
10 Internal diameter, and allow 20foot stroke OF piston
The pipes connecting the upper and lower seamchests
are ~ inches in diameter. The steamchests are pro-
vded with double unprecedented valves, made Of com
position OF the quality The throtteyalve works in
a oastron chamber lined with brass and 27i inches In
diameter Tie 5op-yalyes are % inches in diameter.
and the extra one 10 connect with the old engines
Il glf inches. Tho crOsshead guides OF the
cylinder castron 10 inches wide on top with or
uamentrd capitals curved 20 the base OF the Ranges Inc
unlocking genr IL arranged so that both engines can e
controlled AZ the trout or either ana the throttle anu d
lection valves DO controlled IA the same way lie
y wheel Is - feet diameter and weighs 80 tuns Inc
walking helms' OF cast-foh are - ieGt ol ,t, y
ceners inches deep at the middle, ana - inches at
the ends. The webs y inches thick Inc pedestas
hight being % feet inches. The diameter Of the pedes
tai, Is &c inches The upper foundation paes' II heavy
castirop are 40 feet inches long. and feet inches
wide ana the bed Plates the material, 81 leet
inches long "a inches wide, and Inches thick
vessels TS ef n one piece II feet inches long p
inches IN aud inches thick, and the air pumps
arc inches IN diameter allowing a foot stroke Tue
bucket. IN the ri tom are BRASS The main waterpumps
are east M four sections win pungers and solid pstuns
diameter ana long euongi FOR Ten foot stroke ~ piston
The steam ues which the boiler and the engine
are feet long aud made Of heavy copper Ihey are
cased Ia uou-cODductng material Tho exhaust pipes
are also OF copper dud - inches diameter The DUucs
three number ecn 20 feet long and 20 ieet IN d.
ameter.
me Chicago Tribune gives tho following the correct
estimate of the capacity OF the engine, together with
some interesting Information concerning the laying VI
pipes
ecurrect method given BY SIR. Chesbrough IN est-
mating this engine s As follows: ii capable Of raising
6OO00O gallons OF water or 2ssO0 pounds $50 feet ln "A
hours. 20J 100000 pounds foot IN "a hours or 5o
OOoOoJ pounds foot In minute. HorsepOWer l. est
minute: the horse power thus arrived 40 Would De 30
To this added % per cent for power lost IN friction "
machinery and the horsepower OF the engine may thus
be called 200. AT the time, u circumstances re-
CURED ~ finders of the engine, under hgh pressure
pumps Will not allow such doubling Ile next entlhe
ia sze pump lsOl0OD gallons; lho next livVOOOJi
aud tue smallest ont sO1.ON gallons.
Durin- n past Fortnight tne new 50lnch main through
the La-ac-sl. tunnel from the water works "a LSie-
st been put into USE ana TIE elect upon The supply
n distant parts the city has been little snort Of
velDuz. As Tar South Parkavc. additional
head 81 feet Of water Immediately obtained. The
value OF TINS main vas further exempIhed by acc
dent the Rusn-s main fortnight ago. which would
have been a terrible disaster bur FOR the new @lnch
pipe. with the engine. which viii set down 10
on city viii De better supplied with water tuHn 10
has been u number OF years. But what is enough to-
day Will doubtless Do Tar 100 niue year Aehce.
70 April Is2. tne city had aid 4o' miles OF water
Pipe throughout the city. During the past year the
city has land nearly 20 miles OF waerpipe, more than
laid u the city before ia the same lltne lrfe
seven sizes which have been laid. as follows: FOUR
inch Z344G feet 6luch 3Ji5 leet slnch, 2,2iO feet
Pinch f55j feet llnch, 10 fetti Anch, 81 rect 20
inch lU0gl feet total 49, feet At tue time,
5l6jg feet iOi miles, OF sewerage have been LAID since
April OF the following sizes; One loot, - ieet teet
become especially gratifying. We may show Boston
nothing 10 fear Ia her calamity, when after
lay more and pipes than were laid
before In the same ume'