Eureka daily sentinel. [volume] (Eureka, Nev.) 1871-1887, 1878-09-07
TEE BOSs IKOIsTiSG WORKS.
The New Machinery for tisc Ngrti,
Consolidate I Virginia shaft.


From the Virginia Enterprise.J
The new hosting works soon to be
erected at the North Consolidated Virginia
shaft will be the boss works Of tic Com
stock lode. Colonel Fair says the hosting
works at the c.. and c.. shaft will s.be a
baby by the side of the new North Consoli-
dated Virginia works." The contract for
building the engine, boilers, reels and
other hosting apparatus has been awarded
to Prescott, Scott & Co., Of San Francisco,
for Sl59,G37, the work to be completed in
100 days. Twa higher bids were hand q
in, and in both cases six months was the
time mentioned as the shortest in which
| the machinery could be constructed.
There will be one pair Of direct-acting
hosting engines, both engines connected
by and working on one crank shaft, the
distance between the eenters of the en-
gines being % feet. The engine frame
will be of the style known as Corliss Tor
c~ircular), about twenty-four feet long be-
tween the trent ends Of the cylinders and
where the frame joins the piilow-block.
The expansion Of steam will be controlled
by a cross variable cutoff motion made to
adjust by levers held in quadrants.
Both engines will be fitted with link
motion reversing gear, the levers of the
same to be held by suitable quadrants.
The cylinders will each be % inches in
diameter of bore and eight feet stroke.
Both steam and exhaust valves will be
worked from one rock shaft placed above
the cylinders, equidistant from each end.
The crank shaft i. to be OF wrought iron,
81 feet one inch long and Is inches in dia-
meter. The cranks will be four feet from
the center of the shaft to the center Of the
crank pin. The balance wheels will be in
W pieces, of cast iron, ID feet in diameter
and ii inches wide across the face, and
will be securely bolted together on the
crank.
The brake wheels will be Is feet in dia-
meter and there will be two sets of brakes
complete for each reel, one set operating
on each side and one en- the bottom Of the
brake wheel.
There will DO two reels on the engine
shaft, each six feet in diameter and Of
~seven-inch face, fitted with brake attach
ments arranged to be controlled by hand
power. The reels will be driven by clutches
five feet in diameter, arranged to be worked
in and out Of gear by hydraulic pressure.
Each reel will be furnished with q vertical
spiral drum indicator, four feet in dia-
meter and six feet in hight, to be driven
IOii tAO otul WIittl On tuc pIukc WHICH
arms and by screw and worm.
To drive this machinery there will be
four boilers, each 81 inches in diameter
and 16 feet long, and each containing 46
lap-welded tubes. There will be fonr
steam drums, each AZ inches in diameter
and ~ feet long.
No doubt operations will be commenced
in a short time at grading and preparing
the foundation for the new building, which
will be erected around and over the pres
ent works in such a way as to cover and
inclose them; also at excavating the pits
and arranging to put the foundations OF
stone work on which the engines and other
machinery will stand.
The new hosting machinery will DO the
most perfect and powerful on the lode. In
it will be embodied improvements on the
best now in use. The engines and ofhor
apparatus will be capable of hosting
from an immense depth. 1t is undoubt-
eddy the intention to work both the
Union Consolidated and Mexican mines
through the North Consolidated Virginia
shafts. As the engine and hoisting appa-
ratus are to be completed in December, il
is doubtless the intention to have the build
ing and foundation in readiness by that
time. No doubt equally powerful pump
ing machinery will be erected as soon as il
shall be seen to be necessary. +.