IMPROVEMENTS IN THE MANU- FACTURE OF ALE AND BEER FININGS
Year: 1879

page_text: LETTERS PATENT to Hubert Charles Holland, of Dod Street, Limehouse, in
the County of Middlesex, for the Invention of "IMPROVEMENTS IN THE MANU-
FACTURE OF ALE AND BEER FININGS."
Sealed the 10th April 1879, and dated the 25th January 1879.
PROVISIONAL SPECIFICATION left by the said Hubert Charles Holland at
the Office of the Commissioners of Patents on the 25th January 1879.
HUBERT CHARLES HOLLAND, of Dod Street, Limehouse, in the County of Mid-
dlesex. "IMPROVEMENTS IN THE MANUFACTURE OF ALE AND BEER FININGS."
This Invention has for its object improvements in the manufacture of ale and
beer finings.
I produce my improved finings by the action of salicylic acid upon isinglass.
I take salicylic acid in the form of crystals and dissolve it in water, say one
part by weight of crytallised acid to from 25 to 40 parts of water. I add this
solution to eight parts of the finest isinglass, and allow to stand for a week, stirring
very frequently. I then add more water little by little and from time to time,
stirring the whole occasionally. At the end of about three weeks the finings will
be ready for use after straining. The quantity of water employed in all should be
about ninety times the weight of the isinglass.

page_text: SPECIFICATION_in_pursuance-of-the conditions of the Letters Patent filed by
the said Hubert Charles Holland in the Great Seal Patent Office on the 25th
July 1879.
dlesex.
=HUBERT-CHARLES-HOLLAND, of Dod-Street, Limehouse, in the County of Mid-
“IMPROVEMENTS IN THE MANUFACTURE OF ALE AND BEER FININGS."
This-Invention-has-for-its-object-improvements-in-the-manufacture-of-ale-and-
beer finings.
I employ in the manufacture of my improved finings salicylic acid (cryst.) and
isinglass. I dissolve these crystals in distilled water, or it may be in methylated
spirit. The crystals are more easily soluble in spirit, but if water be employed,
from 25 to 40 parts will be a suitable proportion for dissolving one part of the
crystals. If the solution be first made with spirit, I dilute it with water to bring
the solution to the bulk indicated.
I add this solution to four parts of the finest isinglass and allow it to remain for
some time until a complete jelly is formed. The time necessary for this will vary
from, say 48 hours to a week, and during the whole of this time the materials
should be stirred very frequently. I then add more water little by little and from
time to time stirring the whole occasionally. At the end of about three weeks the
finings, after that they have been strained, will be ready for use. In the water
which I thus add after that the isinglass has been reduced to a jelly, I prefer to
dissolve one half per cent. of pure bisulphite of lime. When I say "pure," I mean
that the bisulphite of lime should not be contaminated with any trace of iron or of
sulphuric acid.
The quantity of water employed in all should be about eighty times the weight of
the isinglass.
The vessels employed in the manufacture should be of glazed pottery or wood.
Having thus described the nature of my said Invention, and the manner of per-
forming the same, I would have it understood that I do not confine myself to the
proportions herein stated, although I believe 'them to be the best suited for the
practice of my Invention, but what I claim is the treatment of isinglass with
salicylic acid as herein stated, and so as thereby to reduce the isinglass to the form
of finings suitable for use in the manufacture of ale and beer.
In witness whereof, I, the said Hubert Charles Holland, have hereunto set
my hand and seal, this Twenty-fourth day of July, in the year of our Lord
One thousand eight hundred and seventy nine.
TATU
H. C. HOLLAND. (L.S.)