The Redwood gazette. [volume] (Redwood Falls, Minn.) 1873-1940, 1876-02-24

The preserving process Is effected in
two large apartments, each about seventy
five feet square and nine feet six inches
high, called respectively the cooling-room
and the freezing. room, thelatter being I'M
derneath the former. These apartments
are entered only throu, h trap.doors from
above, and are surrounded with non.con.
Quoting substances. These two apart.
ments each will hold when closely
packed, something like 1000 or 8, 600 tons
OF meat. The cooling-room will he used
for the storage of meat intended for home
consumption, which will not be actually
frozen, but merely reduced 10 SO low .
temperature that it will keep sweet for am
time until it is wanted. The freezing.
room below, however, is intended for tile
reception of meat designed for exporta.
tion, which 1t is hoped and expected will
solve the great problem of how to supply
the English market with whole carcasses
OF Australian beef, mutton and pork. The
temperature of this room will ALWAYS be
kept considerably below freeziug-point,
as low, even, rs zero, and the meat here is
frozen perfectly hard. This meat tits in.
tended to ship to Europe and elsewhere,
the holds of the vessels being prepared
after principle similar to that Of the re-
fr1gerating machines intended for house.
hold use, so that the meat will remain in
Its frozen state until It breaches the English
markets, where it will be Offered for sale
in the carcass, just the same as meat fresh
from the shambles. 1t il calculated that
about one penny per pound will include
all charges attendant upon this mode of
preserving meat, including even the cost
Of transit to England. The machinery
used for effecting the freezing process,
which is the result Of the numerous ex-
periments alluded to, is the invention of
Mr.. Nicholle, and is An improvement
upon the apparatus invented by the same
gentleman, which has for some time past
been used at the Sydney Ice Works. There
the principal agent used was ammonia In
its gaseous state, which necessitated the
use of q very high pressure, and therefore
vas subject to considerable incon-
venience and risk Of loss by leakage.
Here the ammonia is used in state of
solution, under pressure of from fifty to
seventy pounds to the square inch, while
at the same time the power of the machine
is very much increased. The machinery,
which appears complex, is really simple,
so much so that it only requires the aid of
two persons to work it-one to fire the
engine and the other to watch and regu-
late the apparatus. The same ammonia,
after having been used to produce the
cold, is reabsorbed and made TO do duty
again, so that there is absolutely no waste
beyond an absolute minimum from leak
age, and constant circulation of liquid
is continually going on. At present the
meat preserving process is not fairly at
work, but the machinery is used in the
production of ice. The machinery by
which the ice is produced is this: A
series Of suitable watts are filled with ice
moulds arranged side by side, and into
these proper quantity of fresh water,
filtered on the premises, is poured. All
being then covered up, the cooling liquid
is run into the watts in such manner as
to circulate all round the molds, the con-
tents of which, in = few hours, are frozen
into blocks Of ice, which are then turned
out of the mold and conveyed down to
the freezing room, there to be stored until
required for use. A machine of an entire
ly novel character for the manufacture of
ice has just been invented aud brought
into operation. This apparatus consists
of large drum, the periphery of which
is made of copper. Nearly the whole of
the lower half Of this drum is immersed
in trough of water. The interior of the
drum contains the cooling liquid, and the
drum then being made to reyolve, the ice
forms on the upper surface, whence it is
scraped off in the form OF snow. 1t is
then packed in the molds and submitted
to pressure until it becomes = solid mass.
Sydaey (Australia) Herald.