The Sumter banner. [volume] (Sumterville, S.C.) 1846-1855, 1853-01-18
'Fl,e Calorlc ship Tlticssola,

stacics at the success of this new ship |
which has fulfilled the most sanguine
hopes ofaits projectors, and which is
likely to crcate an entire revolution
in the means of navigation, and in
that branch ofmechanisn Air plowss
are now confidently spokensof, and tits
said that the builders Of the Ericsson
have received proposals for six new
vessels on the model Of that ship.
Tho following description Of the en-
ginc, which will be found interesting,
we extract from Hunts Merchants
Magazine.
Hltis the.m extranrtlinnry.p price
of machicnry We have ever seen. It |
has four cy finders: two Of seventy-two
inches in diameter, stand side by side.
Over each of these is placed one
much smaller. Within these pistons,
exactly fitting thrir respective cglin-
ders, and SO connected that those with
in the lower and upper cylinders
move together. under,ihc bnttoln Of
each Of the lower cylinders a fire is 4
applied. M other furnaces are en-
ployed. Nithcr boilers OF water are
used. The lover is called the work
ing cylndeE lhe upper lie supply
cylinder) moves down, when valves
placed IN its top open. andit becomes
filed With cold air. As tho piston ri
ses within it, these valves close, and
the air wi,IIiu, unable to escape rs it
came, passes through another set of
ralrcs into Il receiver, from whence it
is Ia pass into the working cylinder,
to force UP Tie wcr:iing piston within
it. As it leaves the receiver tn per-
form this duty, passes through what
IS called the Regeneration, (Which We
shall soon rxplair,) where it becomes
heated to abonl $50 degrees. and ,,pon
entering the working cylinder it is
further heated by Tie fire underneath
ave have said the working cylin.
der is much larger in diamctcr than
the supply cylinder.-Let us, for the
sake ct illustration, merely suppose II
contains double the area Tile cold
air which entered the upper cylinder,
will therefore but half ill the lower
one. In tic coarse Of the passage to
the latter, however, WE have suid That it
passes through II regGncralnr; and let
us suppose, that as it enters The work
ing cylinder, it has become Heated to
about 4S0 degrees. At this tempcra.
tnrc atmospheric air expands to duu-
bic its volume. The same atmosjhc.
ric air therefore, which Was confined
within the SUPP ly. cylind,r, is now ca
pahle oflillng one of twice It, size.
With this latg capacity, it enters The
working cylinder.
tNFe-wiil further suppose the area of
of the piston within the cylinder to
contain II thousand square inches, and
| The e. area of the piston lin the supply
cylinder :lbnye to con,;iIfSbut i've nun;
drcd. The air presses upon this with
Il mean force, we will suppose. ufa-
bout eleven pounds to each square inch;
or, in other words, with - weight Of
about $500 pounds. Upon The sur
farce OF tile lower piSt", I, he heated mir
Is however, pressing upward with a.
like force Of 1000 pounds. Here,
then, is n force which after overcom.
!ng he weight above, leaves n surplus
"f $500 pounds. of We make no nj.
Iowancc for friction THIS surplus
t"riishes the working power oi' the
engine. 1t will lie readily seen tia,
after one stroke Of its pistnn~ Is made
it will c"mtinnrto work with Ibis 4fnrcc
5" long rs sufficient heat is supplied To
expand tie air in the working cylin-
der to the extent stated: for so long as
The area "t' the lower piston is greater
Ii'an l'e upper, and n like pressure is
upon every square inch of each SO
long will The greater piston push for
ward the smaller, as a Two pound
weight upon one end Of ~ balance will
be quite sure to bear down one pound
placed under the other. We need
hardly say that after the air in The
working cS lindcr has forced up the pis.
tons, 10y force Of gravity, they descend.
aud cold air again rushcs into and fills
the supply cylinder, as we have before
Described. IN this manner the two
cylinders are alternately supplied and
discharged, causing the pistonS in each
10 play up and down substantially as
they d" III the steam engine.
Let us now attempt to describe
The Regeneration, 10 which We have re-
ferrcd. Without this, the machine
We examined would possess, in point
oi economy, no advantage over the
best constructed stcam.eriginc; with i,
The advantages are ncalcnablc. We |
have alrcahy fully illustrated the lead
IS idea conceived by Capt. Ericsson.
nl employ ing heat over and over again.
/" attain this is the Regeneration.
For the purpose Of understanding
ms instrument, our readers will bear
III mind the construction and opcra-
ton of the machine. We have be.
tore stated that atmospheric air is
first drawn into the supply.cylin.
der, whence 1t is forced into n rrscr.
v"lr, and that from this it proceeds to.
II -.