The news and herald. (Winnsboro, S.C.) 1877-1900, 1880-04-08

-AuNGciai Icc.-EXpcriments in artih-
cial production OF ice have been made
within few years, in Europe and
America, which have resulted, finally,
In developing Il process, or processes,
by which very superior article IL now
made. In New Orleans artificial ice Is
made, which, aside from it's excellence
rs Il commodity Of natural ice, is manu-
tactnred ut such reduced costs rs to dis
pcnse with the shipment of natural ice
TO that market In Il large degree. At
the Louisiana Ice Works In New Orleans
an improved method is now in use for
the manufacture Of ice. Ina strong
Iron cooler Il given quantity of LIQUID
ammonia Is introduced; and by the
means Of slow fire the ammonia gas
Is held In solution In the water, and
conveyed Into Il series Of iron worms
which are surrounded by constant
current Of water. Tho gas, running
through the worms, becomes liqueticd
by the action of the running water and
tho pressure of the boiler, and flows
into a receiver. From the latter the
liqueied gas flows into series of
worms, which constitute tho refrigera-
tor or freezing bath, where, by rapid
evaporation. extreme cold is produced.
TO utilize this cold, the iron worms
arc surrounded by strong solution Of
common salt, which absorbs all tho cold
| prOducnu In the worms. Placed in
| the spaces between the worms are sus-
| pended forms, or moulds, Of any size
desired, filled with pure water, This
watcr Immediately abSorbs the cold
from the salt bath, and the result Is the
formation Of ice. 1t has been
demonstrated that other can be
made to evaporizc so speedily as to
produce intense cold, and If, when cov-
cred with water, Its evaporation be as
sisted, 1t Will escape so quickly as to
lower the temperature Of the water to
freezing point. Hence ether Ia often
used in preparing freezing mixtures; :;
and q machine has recently been con-
structed Tor making Ice by means of the
remarkable property above alluded to,
The apparatus rs described consists of
an engine and air-pump, combined on
the same bed-platc, refrigerator, and
ether condenser, a circulating pump,
and one or more ice-boxes according to
the quality required-a steam engine
supplying the motive power. The two
inlet passages of the mir pump dre con-
nected by copper pipe that places them
In communication with the refrigerator,
which Is a felt-covered vessel of cylin-
drical shape, the tubes being made of
copper and rlveted to brass-cnd plates,
The two outward valves on the other
side of tho air pump communicate with
the ether condenser. The whole is i'm
mersed In wooden tank, through
which lean Of water constantly
passes for cooling and condensing tho
ether vapor. A vacuum is maintained
by the air pump In tho refrigerator, ev-
aporizing the ether at low tempera.
ture. This operation causes an absorb.
| n ,1,l nl,
turc Of a strong brine that Is made to
circulate through the tubes and Ice box
) The latter is a tank Of red deal, varnish-
cd inside, with partitions whith holes
In them to allow slow circulation OF
tho brine. Zinc moulds Of different
widths, according TO tho shapes OF the
bloeka Of ice required, arc filled with
pure water and suspended between the
partitions.