IMPROVEMENTS IN PRESERVING MEAT
Year: 1872

page_text: LETTERS PATENT to Thomas James Denne and August Hentschel,
both of Phoenix Works, Cambridge Road, Mile End, Middlesex,
for the Invention of "IMPROVEMENTS IN PRESERVING MEAT."
Scaled the 5th July 1872, and dated the 6th May 1872..
PROVISIONAL SPECIFICATION left by the said Thomas James Denne
and August Hentschel at the Office of the Commissioners of Patents,
with their Petition, on the 6th May 1872.
We, THOMAS JAMES DENNE and AUGUST HENTSCHEL, both of Phoenix
Works, Cambridge Road, Mile End, Middlesex, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PRESERVING MEAT," to
be as follows:-
—
We take cascine and dissolve it by the aid of ammonia in water to a
thin consistency; to this we add saltpetre and salt, or saltpetre, salt, and
sugar, or saltpetre and sugar. In this solution we dip meat, and hang it
up to dry; when dry we dip it in a weak solution of acetic acid or alum.

page_text: These solutions are to prevent putrefaction setting in too quick in the
meat, and also to give it a dry surface. After this we cover the meat
with an air-tight film or covering thus:—
We take caseino and dissolve it as shown above; to this dissolved
caseine we add glycerine in sufficient quantity to prevent the film which
is made from this solution of caseine and glycerine from cracking when
dry. The consistency of this solution we make by preference about
that of treacle; into this solution we dip the previously prepared meat
slowly, so that the air may be expelled, and hang it up to dry. When
dry this solution forms a film or air-tight covering. We repeat this
dipping as often as may be necessary to form the film or covering into a
sufficient thickness, allowing it to dry between each dip. When this is
done we dip the meat now encased in its casing in a tannin solution,
as alum or weak acetic acid, for a few minutes to make the film insoluble
in water.
When the surface of the meat is dry saltpetre can be added at once to
the solution of caseine and glycerine, and the first solution and dipping
can be dispensed with.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas James Denne and August Hentschel in
the Great Seal Patent Office on the 2nd November 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
JAMES DENNE and AUGUST HENTSCHEL, both of Phoenix Works, Cam-
bridge Road, Mile End, Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of May, in the year of our
Lord One thousand eight hundred and seventy-two, in the thirty-fifth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Thomas James Denne and August Hentschel,
Her special licence that we, the said Thomas James Denne and August.

page_text: Hentschel, our executors, administrators, and assigns, or such others as
we, the said Thomas James Denne and August Hentschel, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for " IMPROVEMENTS IN
PRESERVING MEAT," upon the condition (amongst others) that we, the said
Thomas James Denne and August Hentschel, our executors or adminis-
trators, by an instrument in writing under our, or one of our, or their,
or one of their hands and seals, should particularly describe and ascer-
tain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
3 after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Thomas James Denne and August
Hentschel, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement thereof, that is to
) say :—
This Invention relates to the employment of dissolved caseine in com-
bination with glycerine as a covering or coating for the purpose. of
preserving meat.
We take saltpetre and salt, or saltpetre, salt, and sugar, or saltpetre
5 and sugar, and make a solution, to which caseine dissolved in ammonia
and water may be added. In this solution we dip meat, and hang it
up to dry; when dry we dip it in a weak solution of acetic acid or alum.
These solutions are to prevent putrefaction setting in too quickly in the
meat, and also to give it a dry surface. After this we cover the meat
) with an air-tight film or covering thus :—
.
We take caseine and dissolve it as described above. To this dissolved
caseine we add glycerine in sufficient quantity to prevent the film
which is made from this solution of caseine and glycerine from cracking
when dry. The consistency of this solution we make by preference about
3 that of treacle. Into this solution we dip the previously prepared meat
slowly, so that the air may be expelled, and we hang it up to dry. When
dry this solution forms a film or air-tight covering; we repeat this

page_text: dipping as often as may be necessary to form the film or covering into a
sufficient thickness, allowing it to dry between each dip. When this is
done we dip the meat now encased in its casing into a tanning solution,
as alum or weak acetic acid, for a few minutes, to make the film in-
soluble in water.
If the surface of the meat is dry from the action of the weather salt-
petre can be added at once to the solution of cascine and glycerine, and
the first solution and the dipping can be dispensed with.
No precise quantity of any of these materials can be given, as different
quantities will produce the required result. We prefer for this purpose
caseine made as described in the Specification of our Patent No. 2464,
dated 13th September, 1870.
What we claim as our Invention is, the covering or coating of meat
with caseine and glycerine in combination, as hercin-before described, for
the preservation thereof.
Secondly. We claim the combination of ingredients as described for
the preservation of meat.
In witness whereof, I, the said. Thomas James Denne, for myself
and on behalf of the said August Hentschel, have hereunto set
my hand and seal, this First day of November One thousand a
eight hundred and seventy-two.