IMPROVEMENTS IN THE MANU- FACTURE OF 'FININGS' FOR REFINING OR CLARIFYING AND PRESERVING ALES AND OTHER LIQUIDS." PROVISIONAL SPECIFICATION
Year: 1881

page_text: LETTERS PATENT to Edward John Theodore Digby, of Hammersmith, in the
County of Middlesex, for an Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF 'FININGS' FOR REFINING OR CLARIFYING AND PRESERVING
ALES AND OTHER LIQUIDS."
PROVISIONAL SPECIFICATION left by the said Edward John Theodore Digby
at the Office of the Commissioners of Patents on the 31st May 1881.
EDWARD JOHN THEODORE DIGBY, of Hammersmith, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF FININGS' FOR REFINING OR CLARI-
FYING AND PRESERVING ALES AND OTHER LIQUIDS."
This Invention relates to improvements in the manufacture of "finings" for
refining or clarifying and preserving ales and other liquids which require such a
treatment.
The improved refining or clarifying and preserving mixture is compounded of
or from the following ingredients, namely, sulphuric acid or acetic acid, oyster
shells, gelatine, and water, and in about the hereinafter mentioned proportions.
In preparing a quantity of, say, 30 gallons of the improved finings, I take
between from 4 to 5 lbs. of the sulphuric acid or of the acetic acid, between from
7 to 8 lbs. of oyster shells, and between from 3 to 4 lbs. of gelatine.
The oyster shells I well wash and reduce to a powdered condition, and place in
any suitable vessel; over the powdered shells I then pour the sulphuric acid or.
the acetic acid, and close the vessel air tight, and leave for, say, 5 to 6 hours; I
then add to the admixture within the vessel about an equal quantity by weight
(that is, about 11 to 13 lbs.) of water, and again close the vessel air-tight, and
leave for, say, another 5 or 6 hours.
The gelatine I place in a separate vessel, together with about 27 gallons of
water, close the vessel air-tight, and well agitate this admixture each day for
3 days.
I then cause an intimate commingling of the two admixtures as above com-
pounded or prepared in a common vessel, and well agitate again, close the vessel
air tight, and leave, say, for about 2 days, after which the improved compound
will be ready for use.
About three pints of the improved compound is sufficient to refine or clarify and
preserve one barrel of ale, and in using it, it is used in the usual way in which
ordinary "finings" are used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edward John Theodore Digby in the Great Seal Patent Office
on the 30th November 1881.
EDWARD JOHN THEODORE DIGBY, of Hammersmith, in the County of Middlesex.
"IMPROVEMENTS IN THE MANUFACTURE OF 'FININGS' FOR REFINING OR CLARI-
FYING AND PRESERVING ALES AND OTHER LIQUIDS."
This Invention relates to improvements in the manufacture of "finings" for
refining or clarifying and preserving ales and other liquids which require or which
it is usual to submit to such a treatment.
The improved refining or clarifying and preserving mixture is compounded of or
from the following ingredients, vie, sulphuric acid or acetic acid, oyster shells,
gelatine, and water, and in about the hereinafter mentioned proportions.
In preparing a quantity of, say, 30 gallons of the improved "finings," I take
between from 4 to 5 lbs. of the sulphuric acid or of the acetic acid, between from
7 to 8 lbs. of oyster shells, and between from 3 to 4 lbs. of gelatine.
The oyster shells I well wash and reduce to a powdered condition, and place in
any suitable vessel, and over the powdered shells I then pour the sulphuric acid
or the acetic acid, and close the vessel air-tight, and leave for, say, 5 or 6 hours; I
then add to the admixture within the vessel about an equal quantity by weight
(that is, about 11 to 13 lbs.) of water, and again close the vessel air-tight, and
leave for, say, another 5 or 6 hours.
The gelatine I place in a separate vessel, together with about 27 gallons of
water, close the vessel air-tight, and well agitate this admixture at intervals each
day for three days.
I then cause an intimate commingling of the two admixtures as above com-
pounded or prepared in a common vessel, and well agitate again, close the vessel
air-tight, and leave, say, for about 2 days, after which the improved compound
will be ready for use.
About three pints of the improved compound would be sufficient to refine or
clarify and preserve 1 barrel of ale, and in using it, it is used in the usual way in
which ordinary "finings" are used.
Having now described the nature and object of my said Invention, together with
the manner in which the same is to be or may be performed or carried into
practical effect, I would remark in conclusion that what I consider to be novel
and original, and therefore claim as the Invention secured to me under the herein-
before in part recited Letters Patent is,-
The manufacture of "finings" for refining or clarifying and preserving ales and
other liquids which require or which it is usual to submit to such a treatment by
compounding or intermixing sulphuric acid or acetic acid, oyster shells, gelatine,
and water, as and in about the proportions hereinbefore set forth.
In witness whereof, I, the said Edward John Theodore Digby, have hereunto
set my hand and seal, this Twentyninth day of November, in the year of
our Lord One thousand eight hundred and eighty one.
EDWARD JOHN BUDURE DIGDI. (L.S.)
Witness,
GEO. W. WEBB,
Office for Patents, Trade Marks, & Designs,
1, North Buildings, South Place, Finsbury,
London, E.C.