IMPROVEMENTS IN THE PRESERVATION OF ALIMENTARY SUBSTANCES AND IMPROVED APPARATUS IN CONNECTION THEREWITH "
Year: 1883

page_text: LETTERS PATENT to Carl Maria Pielsticker of N° 5 Sidney Terrace, Kilburn,
London, in the County of Middlesex, for au Invention of "IMPROVEMENTS
IN THE PRESERVATION OF ALIMENTARY SUBSTANCES AND IMPROVED APPARATUS
IN CONNECTION THEREWITH
"J
PROVISIONAL SPECIFICATION left by the said Carl Maria Pielsticker
at the Office of the Commissioners of Patents on the 16th January 1883.
CARL MARIA PIELSTICKER, of 5 Sidney Terrace, Kilburn, London, in the
County of Middlesex, " IMPROVEMENTS IN THE PRESERVATION OF ALIMENTARY
SUBSTANCES AND IMPROVED APPARATUS IN CONNECTION THEREWITH”
This Invention relates to improvements applied to the Invention described in
the Specification to Letters Patent granted to me under Nº 5153 of 30th October
AD 1882 for "a novel antiseptic and improved process for presorving alimentary
substances.
I have found in practice that two gases united in certain proportions,
namely Carbonic Oxide and Carbonic Acid Gas best serve the purpose I have
in view.
Carbonic Oxide Gas by itself is of a highly inflammable, and when united with
air, explosive nature. Carbonic acid gas by itself discolours the fresh meat fibre
and causes the meat to assume an acid taste. By using a mixture of Carbonic acid
gas and carbonic oxide gas in certain definite proportions; say not less than 55 per
cent, nor more than 75 per cent of carbonic acid gas, to not more than 45 per cent,
nor less than 25 per cent of carbonic oxide gas, in which the presence of any
uitrogen gas is immaterial, the meat is neither changed to the slightest degree in
its appearance or its taste, nor is it at all possible to set fire to this mixture of
gases, it being a well known fact, that no flame or fire can exist in the
presence of carbonic acid gas, even if united with threo times its volume of
atmospheric air.

page_text: The mixture of these gases I produce by means of an Apparatus, forming part
of this Invention, constructed in the following manner:-
An iron, or other suitable cylinder say 2 feet high and 8 inches diameter, or
larger in these proportions, is furnished at the bottom with ordinary grate bars.
About 2 inches above the grate is an inch hole in the side of the cylinder for
the admission of a forced air blast by means of a pair of bellows or otherwise.
Near the top of the cylinder a number of one inch pipes enter all round the
circumference and project about 2 inches inside the cylinder for the admission
of air into the upper part of the cylinder. The number of these air pipes are in
the proportion of one to every two inches of diameter of the cylinder, so that for
instance a cylinder of 8 inches diameter requires no less than 4 air pipes which I
have found out in practice to give me the correct proportion of Carbonic acid and
carbonic oxide gas. The cylinder is closed at the top with an iron cap, having an
outlet pipe say 2 inches in diameter and 2 feet or more in length, and is connected
with an iron coil placed in a water tank and kept cool by the inlet of cold and
overflow of the warm water. The lower and or outlet of the coil is connected with
the preserving chamber.
In order to produce the mixture of gases which are useful and requisite for my
purpose, I fill the cylinder full with wood charcoal or mineral charcoal, light
the saine and apply a blast through the hole left for that purpose in order to
promote combustion.
The gas which arises consists mainly of carbonic oxide gas mixed with some
carbonic acid gas and also nitrogen gas, which latter need not be considered. In
the upper part of the cylinder the carbonic oxide gas is further partly oxidised
into carbonic acid gas by the further supply of atmospheric air, as mentioned
before. When the number of one inch air pipes is in the proportion of one to
every two inches of the diameter of the cylinder a mixture of the gases in correct
proportion to each other which neither change the taste and appearance of the
meat nor are in the slightest degree inflammable, is the result, without any nice
adjustment or regulation of apparatus. The gases pass through the coil, where
they are cooled, into the preserving chamber, with which the lower outlet of the
coil has previously been connected.
The mixture of gases may be passed into and through the preserving chambers
• continually during the time a steamer is crossing the Ocean, or the air in the
preserving chambers may be merely removed, the chambers well filled with the
mixture of gases and then both inlet and outlet closed, or the gases may be
again exhausted after treatment, and a partial vacuum left in the chambers.
The mixture of gases may be either used by itself or as an after treatment after
the use of any antiseptic.
Although I have mentioned meat only I propose to treat other alimentary
substances in a similar manner.

page_text: SPECIFICATION in pursuance of the conditions of the Lotters Patent filed by
the said Carl Maria Pielsticker in the Great Seal Patent Office on the
11th July 1883.
CARL MARIA PIELSTICKER, of N° 5 Sidney Terrace, Kilburn London, in the
County of Middlesex, "IMPROVEMENTS IN THE PRESERVATION OF ALIMENTARY
SUBSTANCES AND IMPROVED APPARATUS IN CONNECTION THEREWITH
"
This Invention relates to improvements upon the Invention described in the
Specification to Letters Patent granted to me under N° 5153 A.D 1882. for a novel
antiseptic and improved process for preserving alimentary substances
I have found in practice that two Gases mixed in certain proportions,
namely Carbonic Oxide and Carbonic Acid Gas best serve the purpose I have
in view.
Carbonic Oxide Gas by itself is of a highly inflammable, and when mixed with
air, explosive nature.
Carbonic Acid Gas by itself discolours fresh meat fibre and causes the meat to
assume an acid taste. By using a mixture of carbonic acid Gas and Carbonic
Oxide Gas in certain definite proportions, say not less than 55 per cent, nor more
than 75 per cent of Carbonic Acid Gas, to not more than 45 per cent nor less than
25 per cent of Carbonic Oxide Gas, in which the presence of any nitrogen gas is
immaterial, the meat is neither changed to the slightest degree in its appearance or
its taste, nor is it at all possible to set fire to this mixture of Gases, it being a well
known fact, that no flame or fire can exist in the presence of carbonic Acid Gas,
even if mixed with three times its volume of atmospheric air.
The mixture of these Gases I produce by means of an apparatus forming part of
this Invention.
My improved Gas producing apparatus is constructed as follows:-reference
being had to the accompanying Sheet of Drawing:-
A cylinder of iron or other suitable material A say 2 feet high and 8 inches in
diameter, or larger in these proportions, is furnished at the bottom with ordinary
grate bars B. About 2 inches above the grate is an inch hole C in the side of the
cylinder for the admission of a forced air blast, by means of a pair of bellows; or
otherwise. Near the top of the cylinder a number of one inch pipes D enter all
round the circumference and project about 2 inches inside the cylinder for the
admission of air into the upper part of the Cylinder. The number of these air
pipes is in the proportion of one to every two inches of diameter of the cylinder,
so that for instance a cylinder of 8 inches diameter requires no less than + air
pipes, which I have found out in practice to give me the correct proportion of
Carbonic Acid and Carbonic Oxide Gas-The Cylinder is closed at the top with an
iron cap E having an outlet pipe G say 2 inches in diameter and 2 feet or more
in length, and is connected with an iron coil H placed in a water tank K, and kept
cool by the inlet of cold N and overflow O of the warm water-The lower end or
outlet M of the coil is connected with the preserving chamber Z.
In order to produce the mixture of Gases which are useful and requisite for the
preservation of alimentary substances (which mixture should not be less than
55 per cent or more than 75 per cent of Carbonic Acid Gas to not more than
45 per cent nor less than 25 per cent of Carbonic and Oxide Gas) I fill the
cylinder full with wood Charcoal or mineral Charcoal light the same and apply a
blast through the hole left for that purpose in order to promote combustion. The
Gas which arises consists mainly of Carbonic Oxide Gas mixed with some Carbonic
Acid Gas, and also Nitrogen Gas, which latter need not be considered-In the

page_text: upper part of the Cylinder the Carbonic Oxide Gas is further partly oxidised into
Carbonic Acid Gas by the further supply of atmospheric air, as mentioned before-
When the number of one inch air pipes is in the proportion of one to every two
inches of the diameter of the cylinder a mixture of the gases in correct proportion
to each other, which neither changes the taste and appearance of meat subjected to
its influence nor is in the slightest degree inflammable is the result; without any
nico adjustment or regulation of apparatus.
The gases pass through the coil, where they are cooled, into the chamber containing
the alimentary substance to be preserved, with which Chamber the lower outlet of
the coil has previously been connected
The mixture of gases may be passed into and through the preserving chambers
continually during the time a Steamer is crossing the Ocean, or the air in the
preserving chambers may be merely removed, the Chambers well filled with
the mixture of gases and then both inlet and outlet closed, or the gases may
bo again exhausted after treatment, and a partial vacuum left in the chambers.
The mixture of Gases may be either used by itself or as an after treatment aftor
the use of any antiseptics.
Although I have mentioned meat only I propose to treat other alimentary
substance in a similar manner.
Having now described and ascertained the nature of my said Invention and in
what manner the same is or may be performed.
What I Claim as secured to me by the herein before in part recited Letters
Patent is :-
For the purpose of preserving alimentary substances, the use of a Gas producer
constructed as hereinbefore described and having openings for the admission of
atmospheric air near the top of a Cylinder, for the purpose of oxidising the vapors
of carbonic oxide produced from the combustion of coke to a certain definite extent,
into Carbonic acid gas, and of so producing a mixture of Carbonic acid and Carbonic
Oxide Gas in certain definite proportions, substantially as described.
In witness whereof I the said Carl Marin Pielsticker have hereunto set my
hand and seal this tenth day of July in the year of our Lord One thousand
eight hundred and eighty three