A METHOD OF PURIFYING AND DISINFECTING INTESTINES AND MANUFACTURING GELATINE THEREFROM
Year: 1856

page_text: LETTERS PATENT to Frederic Chapman, of Piccadilly, in the City of
Westminster, Gentleman, and Charles Bowyer, of Davies Street, in the
County of Middlesex, Gentleman, for the Invention of "A METHOD OF
PURIFYING AND DISINFECTING INTESTINES AND MANUFACTURING GELATINE
THEREFROM"
Sealed the 5th May 1857, and dated the 6th November 1856.
PROVISIONAL SPECIFICATION left by the said Frederic Chapman and
Charles Bowyer at the Office of the Commissioners of Patents, with their
Petition, on tho 6th November 1856.
WE, FREDERIC CHAPMAN, of Piccadilly, in the City of Westminster,
Gentleman, and CHARLES BOWYER, of Davies Street, in the County of Middle-
sex, Gentleman, do hereby declare the nature of the said Invention for
"A METHOD OF PURIFYING AND DISINFECTING INTESTINES, AND MANUFACTURING
GELATINE THEREFROM," to be as follows:-
Our Invention consists in first thoroughly washing the intestines in water,
then reducing them to small pieces and immersing them in a bath of
sulphurous acid, or covering them with sulphurous acid. The intestines are
subjected to the action of the acid for about 12 hours, when the first supply of
acid is thrown away and a fresh supply added, to which the intestines are
again subjected for about 12 hours further. This second dose of acid is

page_text: thrown away and the intestines are thoroughly washed in clean water; next a
solution of alum is poured over the now disinfected intestines, and their
conversion into gelatine is effected by steam applied in a double-sided or
jacketed pan lined with lead, enamel, or some other material not likely to be
injuriously affected by the sulphurous acid. Care must be taken throughout
the process to use only such vessels as will not be affected by the acid.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederic Chapman and Charles Bowyor in the Great Seal
Patent Office on the 5th May 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FREDERIC
CHAPMAN, of Piccadilly, in the City of Westminster, Gentleman, and CHARLES
BOWTER, of Davies Street, in the County of Middlesex, Gentleman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of November, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Frederic Chapman and Charles Bowyer, Her special licence that we, the
said Frederic Chapman and Charles Bowyer, our executors, administrators,
and assigns, or such others as we, the said Frederic Chapman and Charles
Bowyer, 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 "A METHOD OF PURIFYING AND
DISINFECTING INTESTINES, AND MANUFACTURING GELATINE THEREFROM," upon the
condition (amongst others) that we, the said Frederic Chapman and Charles
Bowyer, or one of us, our executors or administrators, by an instrument in
writing under our, or their, or one of our or their hands and seals, should par-
ticularly describe and ascertain 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 uext and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Frederic Chapman and Charles
Bowyer, do hereby declare the nature of our said Invention, and in what

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say:-
Our Invention consists in first thoroughly washing the intestines in water,
then reducing them to small pieces and immersing them in a bath of
sulphurous acid, or covering them with sulphurous acid. The intestines are
subjected to the action of the acid for about 12 hours, when the first supply of
acid is thrown away and a fresh supply added, to which the intestines are
again subjected for about 12 hours further. This second dose of acid is
thrown away, and the intestines are thoroughly washed in clean water; next
a solution of alum is poured over the now disinfected intestines, and their
conversion into gelatine is effected by steam, applied in a double-sided or
jacketed pan, lined with lead, enamel, or some other material not likely to be
injuriously affected by the sulphurous acid. Care must be taken throughout
the process to use only such vessels as will not be affected by the acid.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, we declare that we claim the purifying
and disinfecting of intestines and the manufacturing of gelatine therefrom in
the manner herein-before described.
In witness whereof, I, the said Frederic Chapman, for myself and on
behalf of the said Charles Bowyer, have hereunto set my hand and seal,
this Fifth day of May, One thousand eight hundred and fifty-seven.
FRED CHAPMAN. (LS.)