The Manitowoc pilot. [volume] (Manitowoc, Wis.) 1859-1932, 1859-09-09

|
stroke. Under the latter circumstances
the padde-engines alone would give an in
dicated power of 5000 horses. The boil
ers are immensely strong, and have been
tested at double the pressure they are in
tended to bear. Their weight, including
donkey engine, pumps, tunnels, &c, is 210
tons. and they are capable of containing
l56 tons of water. Each set has about
| 5000 square feet of tube surface, exclusive
oft1ue or furnace, and about 1000 square
feet of fire-bar surface. Each is equal to
supply freely with moderate firing steam
for an Indicator of ], 500 horse power when
working with 10 lbs, but with full firing
can supply an indicator of $500 horse
power. The fireplaces and ashpits are fit
ted so as to be we'll adapted for the use of
anthracite coal.
The screw engines are constructed on
the same improved principles. They have
four cylinders of 81 inch diameter and 4
feet stroke. The cylinders are capable of
beng worked together or separately.
When working 40 strokes a minute, with
steam on at Is lbs, and cutting off at one.
third of the stroke, these engines give am
-
strokes minute, steam on at 25 lbs, and
cutting Oft at one quarter of the stroke,
the power will reach to $500 horses. Thus
the united efforts of both screw and paddle
engines will drive the immense vessel thro'
the water with power of no less than
10000 horses. What fleet could stand in
the way of such mass, weighing some
10000 tons, and driven through the water
by II OOO horse power, at the rate of %
or % miles an hour! The screw-engine
boilers are in three distinct sets. Their
weight is 362 tons, and their capacity for
water 27O tuns. The probable consump-
ton of coal when both engines are at
full work will average $50 tons per day.
The cellular compartments at the bottom
of the ship will be used for pumping water
into instead Of ballast, and, as the webs
subdividing these are made perfectly water
tight, any one or any number can be filled
at pleasure.
Steam was got up in the paddle engines
at ~. At that time all the visitors were
on board, and the engine-room and matches
in spite of the heat, were crowded with
eager lookers-on.
The first movement Of the gigantic cranks
and cylinders Of the paddle engines was
made precisely at half past 1, when the
great masses slowly rose and fell as noise
lessly as the engines of Greenwich boat,
but exerting in their great revolutions
what seemed to be an almost irresistible
power. There was no noise, no vibration,
nor the slightest sign of heating, and the
tremendous frame of iron-work sprang at
once into life and motion with as much
ease as if every rod and crank had been
worked for the last ten years The steam
in the boilers was about u lbs, but, as
matter of course, the engines were turned
but slow y, never exceeding six revolutions
per minute. Even with this slow motion
and the slight immersion of the paddle
floats, the effect of the enormous power
was at once visible upon the ship. The
great mooring chains astern were tighten
ed to the utmost, and it seemed as if even
1rotman's anchors themselves would Weld
under the strain. Fortunately, however,
these held fast, and then the screw engines
were got into motion, working the ship
astern, so as to counteract the effect of the
paddles. These latter engines worked with
the same marvellous ease and freedom;
there was no noise, no sign of hot bearings
and the result was considered by all the
engineers on board to be satisfactory in the
very highest degree, and far beyond what
could have been expected. When the en-
gines has been tested to the utmost to
which they could be tried with a vessel at
her moorings; all the visitors adjourned to
the saloons, where magnificent cold COL
lation had been laid out by Mr.. Quarter
maine.
In the New York Herald of the 1st
inst, we find the following additional news
concerning the great steamship:
Our readers will remember that our Lon
don correspondent mentioned in re"n".
| Iet.~- H. III. lover, Inc protector of the
Galway line of steamers, had made the
handsome offer of 100000 to the Great
Eastern Company for the privilege of run
ming the monster on her first trip from
Galway to Ameaica. We are now in pos
session of information, through a private
despatch received by the Jason, to the eff.
feet that she will sail from Galway on the
10Th of this month, and that her desti,.a-
ton will be New York and not Portland.
The Great Eastern will touch at st.
Johns, leav~o there a mail, her dispatches
for the press, ala such passengers as NAV
be bound there, ana iii nrocead d;ractlyy
to this point, where she " 49, ~ ounon,a3
to arrive about the Oath inst, ar the TIC.
abOuts.
The advent of this splendid ship in our
waters will produce the greatest excite
ment in all circles-more perhaps than any
previous event ever gave rise to in this
country. People will flock from all quar-.
tiers of the Union and from Canada to be-
hold her, and should she be thrown open
to visitors, as she doubtless will be, and
small charge be made for admission-say
twenty-five cents-the en:erprising COM
pany who have chartered her may realize
one-half the sum they paid for the right to
start her from Galway.
1t is probable that the Great Eastern
will be despatched with light cargo, and
only coal enough for the return voyage, so
as to enable her to enter our harbor by
the Narrows; which she can easily do, and
by lying off until high water, she can
come up to her anchorage off the Battery.
| A.. Al r L.