IMPROVEMENTS IN ICE-MAKING MACHINERY, ALSO APPLICABLE TO THE SUPPLY OF COLD AIR 10 BEER CELLARS AND OTHER PLACES
Year: 1877

page_text: LETTERS PATENT to Gerald Wenzeslaus von Nawrocki, of the Firm of J Brandt
and G W v Nawrocki, of Beilm, in the German Eipne, Engineers and
Patent Agents, for the Invention of "IMPROVEMENTS IN ICE-MAKING MACHINERY,
ALSO APPLICABLE TO THE SUPPLY OF COLD AIR 10 BEER CELLARS AND OTHER
PLACES" A communication from Robert Schultz, of Schoppenstedt, in
Brunswick, in the German Empire
led the 26th June 1877, and dated the 1st February 1877.
PROVISIONAL SPECIFICATION left by the said Geraid Wenzeslaus von
Nawrocki at the Office of the Cominissioners of Patents on the 1st February
1877
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J Brandt and G W.
v Nawrocki, of Berlin, in the German Empire, Engineers and Patent Agents "IM-
PROVEMENTS IN ICE-MAKING MACHINERY, ALSO APPLICABLE TO THE SUPPLY OF COLD
AIR TO BEER CELLARS AND OTHER PLACES " (A communication from Robert
Schultz, of Schoppenstedt, in Brunswick, in the German Empire)
The object of this Invention is to produce ice by compressed air, the machinery
being also without much alteration suitable for supply of cold an to beer cellars and
other places
The machine has an air-compressing pump which applies air at, say, 3 to 4 atmo-
spheres pressure, the au thereby acquires a temperature of about 250 to 300° F.;
it then passes by a pipe fitted with pressure gauge, safety valve, and thermometer,
into a cooling coil of pipe situated in a box, it then passes into a second cooling coil
of pipe in a second box, cooling water is passed into the latter, and thence overflows
into the former box, using from the bottom of the latter by reason of a diaphragm
fitted therein, and finally running off at the top The two coils of pipe ale each
fitted with pipe or trap for collecting the condensed water in the compressed air,
and this water will be squirted out on opening taps therefor The compressed air
then passes through an injector apparatus of well known construction, where atmo
spheric air is also diawn in, and then first through one coil in a cooling box, and
then through another coil in another cooling box, it then goes through a coil of
pipe in a freezing box, whence it returns to the compressing pump and injector in
Price 6d]

page_text: order to be complessed, cooled, and expanded afresh The cooling water in the last
cooling box overflows into the previous one, and thence i uns off into the open
The freezing box contains a chloinatium or chlor calcium water solution, the
copper ficezing chambers are suspended between the pipes There is a valve
between the freezing box and the last cooling box for regulating the admission of:
the cold compressed nur at about 1/2 to 1 atmosphere, this valve is so loaded that it
shuts off to the coolmg box when the pressure of the entering au is not high
enough, the load may be varied as desued There is here fitted a thermometer and
A pressure danma
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Cerard Wenzeslaus von Nawrocki in the Great Seal Patent Office
on the 1st August 1877
35
GERARD WENZESLAUS VON NAWROCKI, of the Fum of J Brandt and G W
IM-
v Nawrocki, of Berlin, in the German Empe, Engineers and Patent Agents
PROVEMENTS IN ICE-MAKING MACHINERY, ALSO APPLICABLE TO THE SUPPLY OF COLD
- AIR TO BEER CELLARS AND OTHER PLACES" A communication from Robeit
Schultz, of Schoppenstedt, in Brunswick, in the German Empue
The object of this Invention is to produce ice by compressed an, the machinery
being also without much alteration suitable for supply of cold an to bee cellus and
other places
The machine has an au-compressing pump which supplies an at, say, 3 to 4
atmospheres pressure, the an thereby acquies a temperature of about 250 to
300° F, it then passes by a pipe fitted with pressure gauge, safety valve, and thei-
mometer into a cooling coil of pipe situated in a box, it then passes into a second
cooling coil of pipe in a second box, cooling water is passed into the latter and thence
over flows into the former box, 11sing from the bottoin of the latter by reason of a
diaphragm fitted therein, and finally running off at the top The two coils of pipe
are each fitted with pipe or trap for collecting the condensed water in the compressed
air, and this water will be squnted out on opening taps therefor, the compressed
air then passes through an injector apparatus of well known construction, where
atmospheric air is also diawn in, and then first through one coil in a cooling box, and
then through another coil in another cooling box It then goes through a coil of
pipe in a freezing box, whence it returns to the compressing pump and injectoi in
order to be compressed, cooled, and expanded afresh The cooling water in the last
cooling box overflows into the previous one, and thence runs off into the open
The freezing box contains a chlornatium or chloicalcium water solution, the
There is a valve
copper freezing chambers are suspended between the pipes
between the freezing box and the last cooling box for regulating the admission of
the cold compressed au at about 1/2 to 1 atmosphere, this valve is so loaded that it
shuts off to the cooling box when the pressure of the entering an is not high
There is here htted a thermometer and
enough, the load may be varied as desued
a pressure gauge
If the machine is only to be used for supplying cold air the freezing box 18
omitted
Figure 1 of the accompanying Diawings is a side elevation, and Figure 2, a plan
of an apparatus consti uoted according to this Invention.
A is the double-acting pump which compresses air to 3 to 4 atmospheres, the air
which thereby becomes beated to 50 to 300° F. passes through the pipe a, and thence

page_text: into the cooling coil B in the box D The pipe is fitted with safety valvo 6, prossure
gauge c, and thermometer d From the cooling coil, B passes by a pipe d¹ into a
second cooling coil C in the box E, which is supplied with cooling water which
over flows by the spout finto the box D, entering from below, and rising up, cooling
the coil B and then running off by the pipe y The coils B and C have each a
closed water bag for collecting the condensed water, which on opening the cocks /
is squirted out by the compressed au The coils have also suitable joints k and k¹
for disconnecting them and cleaning out the incrustation Z is a thermometer The
an goes from the coil C with a pressure of 3-4 atmospheres by the pipo m into an
injector or jet apparatus G of known construction, it diaws in some atmospheric air,
and then the copper pipe o enters the cooling coil H, wherein it is fui thoi cooled and
then passes into the coil J, and thence by coil K of the freezing box L, and lastly
by the pipe u back to the compressing punp A and injector, to be again compressed,
cooled, and expanded afresh The coils H and J are in water boxes M and N, into
which latter the cooling water enters by the pipe p. The cooling water overflows
from the box N by the spout into the water M, whenco it runs off into the
open
The freezing box L is filled with a chlornatium or chlorcalcium solution in
water, Pare ficezing boxes suspended between the coils K W is a valvo box with
cone valve a between L and N for regulating the adinission of the cold compressed
an at a pressure of about 1/, to 1 atmosphere into the coil K, it is loaded by a spual
sping B which tends to close pipe w when the pressure of the au coming from the
coil is not strong enough to lift it vis a screw for regulating the tension of the
sping B to the desned pressure The thermometers y and y' show the temperature
on each side of this pressure regulator W, and the pressure gaugos ≈ and 2¹ respect-
voly the pressure of the compressed and the expanded air
If the machine is intended to produce cold an only the box L is left out, and the
pipe w is then passed directly into the collar or other space where required, the
pipe wis then fitted with thermometer and pressure gauge
As the expansion from 1/, an atmosphere's pressure (above the atmosphere) to
atmospheric pressure reduces the temperature about 106° F, and oxpansion from 1
atmosphere's pressure to atmospheric pressure reduces the temperature about 140° F,
at is evident that by the application of sufficient cooling water or cooling coils any
desned degree of cold may be produced The injector apparatus G, impelled by the
compressed an, saves a great deal of engine power, as about 30 to 50000 cubic feet
of atmospheric au may thereby be diawn in, compressed, and expanded The com-
piessing pump A and the jet apparatus G nay, as desued, diaw the au direct
from the cellar or other place, or it may bing pure cooled atmospheric air thereto
This ice machine is distinguished by small cost and great efficiency, it is easy to
manage, lasts well, and the heated water may conveniently be applied in breweries,
thus saving expense for fuel
And, having thus described the nature of this Invention, I declare that I claim,
the general aangement and combination of parts, and specially the combination of
an compressing apparatus in combination with cooling coils and appliances, and one
o more jet oi injector appliances, all substantially as and for the purposes set
forth
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, havo hore-
unto set my hand and scal, this Twenty-seventh day of July, in the year
of our Lord One thousand eight hundred and seventy-seven