The Jeffersonian. [volume] (Stroudsburg, Pa.) 1853-1911, 1876-04-20

CHINE TRIED AND FOUND PERFECT
DESCRIPTION OF TIE DIFFERENT PARTS
OF THE ENGINE.
In Machinery Hall, at the Centennial
grounds, last evening, the Corliss engine,
which is to furnish the power for the main
shafting in that building, or, in the other
words, is to be the main source of all the
mechanical motion in that department of the
Exposition, was given its trial test, and found
to be i'll perfect working order, although the
parts were never put together before, but
were made at the Corliss Works and
brought here separately, to be fitted toge
ther for the first time.
The engine was completed on the 10th
inst, and, according to contract, was to
run thirty days prior to the opening of
the Exhibition" The following general
description will be found interesting =
Mr.. Corliss made the first sketch Of the
engine, boilers and shafting nine months
and twcnty-six days ago. The weight of
the engine, boilers and shafting now on the
ground is 1,360,560 pounds, and the
freight, to deliver it on the grounds, cost
S5442 So. Three car loads are yet on the
way.
1t required ten trains of six cars each,
sixty freight cars in all, to transport it to
the grounds, the shipments being so ar
ranged as to cross the Hudson at New
York without breaking bulk.
The engines consist of two vertical beam
condcnsiDg engines Of the following dimcn-
SiOnS -
Diameter of cylinder, in inches, 40
Length of stroke, in feet, 10
Diameter Of air pump, in inches, 81
Stroke Of air pump, in inches, Il
Diameter of spur wheel, III feet, 80
Width Of face, in inches, "a
Diameter of pinion, in feet, ~
Width of face, in inches, "a
Revolutions, per minute, sc
Line shaft will run three turns to one Of
the engine.
; The engines are connected at right angles
, with each other
The spur wheel and pinion were cut with
the celebrated Corliss cutting engine, and
run noiselessly. The power will be distri
buted from the first shaft on which the
4 pinion is secured, in four main lines, by
, means Of twelve 12) mitre wheels made o
the best gun metel melted in an air furnace
| These wheels were also cut on the patent
cutting engine, which will be erected in tht
building and be put in operation during tht
Exhibition.
/ The weight Of spur wheel alone is 81
y tons, and with cranks and shaft IS tons
' The pitch Of the teeth is 81 inches.
: With boiler pressure Of 75 pounds pc
. square inch, the engine cutting off tn
n steam after the piston has travelled one-sixtl
5 of the stroke GO inches) and expanding
r, one hundred inches, it will exert powe
e Of $50 horses for each engine, or 130
o horsepower for the two engines.
n The water for condensing the steam G
these engines will be supplied from the lake
on the north side of Machinery Hall, an
9 the water from the hot well will be emptie
c into a special drain constructed for that pur
pose. The engine is fitted with boiler feed
e pumps, which take their supply from tn
) hot wells of the engine, which will average
100 to 10 degrees Fahrenheit.
Il The boilers are of the Corliss patent, an
. are twenty in number. They are know
in the trade as vertical tubular, and cor
/ sist of an outside she'll, As inches in diane
a a ter and II feet long; they contain 4
u tubes, 3 inches in diameter, for each boiler
and are estimated at 70-horse power eacl
J. 1400-horsc power in all.
. The engines had the steam turned on ;
% six p. NJ, and, after being turned over on
e revolution 10y hand, so as to make sure ever.
thing was in working order, they con
- menced to run at 6:35, so quiet and noisc
i less that, with your back turned towar
e them, you would not have been aware tn;
If they were in motion.
J. The start was witnessed by large nun
Sc Der of prominent persons, among whol
It were Directors General Geshorn, Messr
l. Corliss, Morrcll, Albert and Cochan, Cel
tennial officials, and also w. ID. Lockwood
d Professor Barker, W. Barnet lie Van,
,e the Franklin Institute, and others inte
a estcd in the advancement Of American il