New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1854-10-13

fact. qus0ruple engines, pulit oy Mes,rs Randolph,
Elder g. Co Of that city, on the double expansion.
usually known in this country as the Worth pl.n,"
and which have been generally believed in this vi
ciniiy to be rapidly becoming obsolete The Brandon
has four engines al double acting and standing 10
vertical position 81 considerable distances apart in a
massive framing of In the orTard pair the
port engine receives the fresh steam from the boiler
and discharges it into the starboard and larger one
willie in the after pair this arrangement is reversed
and the ssrboaroi the smaller or high pessure cyn-
Der The two stsrboard engines are eonnsc-ed TO
crspks KEYED at right angles on the ends Of stou,
staf lying horizontally fore and aft overhead. The
port epeints connected to similar shaft and each
Of these shafts carry large wheels nesy opposite each
ether with wooden cogs, which mech into a smaller
pinon on the propeller shaft below. The steam ia
admitted into the smaller cylinders at pressure Of
about 20 lbs above that IL the atmosphere, and ex-
pandipg by the lap of the valve merely dimnshes its
pressure 10 about Is when the stroke lie completed at
which tine the valve opens, admitting the steam TO
the same end Of the corresponding )wpressure engine
then the opposite center. This second engine is
designed to expand the steam TO as low pressure
is economically practicable the stroke Of piston in all
the engines being feet and the diameter Of the high
pressure A. while that Of the owpressure IL 81 inches
The ratio Of the capacities Of the high and low pres
sure cylinders being about az to 81, the steam may
be supposed TO be finally expanded in abou; that ratio
and the effect Of each pair s theoretically equal TO
that of single cylinder of rs inches diameter in which
The steam s cut of at two-fiths Of the stroke and
psnded through the remainder. There are two vert-
cal ar-pumps. one each SIDE worked by eccentrcs
on the upper shafts. There are many details Of con-
siderable novelty among which may be mentioned
get Of small valves or cocks suitably connected for
working, or rather for warning, the engines by
hand.
DIR. GoRRIEs APPARATUS FOR MAKING Icr.-
Among the novel machines lately produced in our
immediate vicinity, few perhaps are more worthy of
brief notice than the engine for producing ice in the
tropics patented by John Gorre, N. d. of Apalachl-
cola Fla in 1851. machine of considerable size has
been lately constructed for the inventor by Mr. H. T.
Boeder of this City, a, the Chelsea Iron Works late
Mott g. Ayres in Twenty -sixth.st Some persevering
writer once col eoted nost commercially tedious cata
loeue of active ransitive verbs it crushes it grnd,,
it "spins. it weaves," &c-the ait in every
fenpg to the modern steam engine; and the whole
paragraph, which certainly conveyed very compen-
dious enumeration Of the versatile talents of this
powerful agent, has since been copied into almost
every Newspaper IOH DtGhuih' INC w Doe"Hy D"I'
Freeing by steam % is performance however,
which, although well known to be possible has never,
that we are aware, been judged economi ally prac-
tcsble until the invention of this machine, and the
subsequent discussion by DR.. OF all the questions
involved has given it aspect Of considerable i'm
porance. The invention consists principally in the
addition of air engine so to speak, in which the
compressed air may be worked off instead OF allow
ing it to escape idly into the atmosphere and in the
employment of suitable, uncongealabe liquid to
supply the calorc to the expanding air, or, in more
fsmiliar language to " absorb the cold and convey
II to the freezing water. DIR. g. employs two cylin-
ders of nearly equal SIZE each with solid piston, and
both connected to the same shaft One of these
serves as a forcing pump for COMPRISING the air,
let of water being injected to cool down the rising
temperature. BY injecting sufficient quantity OF
water il is found practicable absolutely to prevent
the air from becoming heated more than very few
degrees the heat Of compression being all absorbed
by the water which lie allowed to flow away slightly
bea'ed. The cir thus compressed is next admitted
into the second cylinder, by means analogous to the
valves Of steam engine, where ii expands itself 10
nearly its original volume. In this second cylinder
or air engine the cold is developed in degree which
would be extreme and seriously prevent the expan-
sion of the air, but for the injection Of fluid which
must be nearly uncopgealabe to absorb the cold.
The liquid employed by DIR. Gorrie as the most con-
venicnt and economical is salt water or brine the
cylinder piston, &c, being all of brass to prevent
corosion. The brine being thus intimately mixed
with the expanding air, attains sufficiently low tenn
perature and is allowed to escape from the cylinder
into freezing tank, in which are partly immersed
farng copper vessels containing the fresh water to
be frozen. The brine being, by the aid of small
pump, continually Withdrawn from this tank and
passed through the expanding cylinder, is kept SUI
cienty cold to rapidly CONCEAL the water in the thin
conner vessels which are alternately empted Of ice
and re filed with pure water while the power obtained
from this expanding engine so nearly equals that con-
suned in the COMPRISING cylinder that q steam en-
CINE of very moderate power sufiices to keep the
whole apparatus in motion and manufacture ice in
quantities suicien. to supply city in the hottest
climates and in localities the furthest removed from
payea able waters other convenient means OF ae-
Gees to the ice of our northern streams.
Such is the theory of DR.. Gorres ice machine, and
such so far as yet experimental, have been the re-
suits in practice. The machine now standing at the
aboye-naned iron works has produced ice at the tate
Of about two tuns in twenty-four hours, although
fatal error in the constructionthat of providing no
escape for the water from the upper end u the GYM
der-renders it practically equal only to single act
ING machine beside endsngerpg the destruction OF
the machine by the conclusion Theoretical cslcula-
tons alone would indicate the production, By aid OF
ourbor.e power engine, Of eight tuns of ice per day
xerth. in Macon and Atlanta, Ga, some $40 or $50
per tun; and, making every reasonable allowance
for los.es there can be little reason to doubt that the
roacbapicslly ms he made the