Brewers' Waste, and Returns.
Year: 1885

page_text: Brewers' Waste, and Returns.
We ALEXANDER WILLIAM GILLMAN and SAMUEL SPENCER, both of the Castle
Brewery, St George's Road Southwark in the County of Surrey, Consulting
Practical Brewers and Analytical Chemists do hereby declare the nature of the
invention to be as follows:-
4.
The invention has for its object the preparation of finings which are specially
suitable for clarifying sour beers, brewer's waste and returns notwithstanding the
presence therein of isinglass decomposed yeast, albuminous and other solid matter
in suspension.
For this purpose we make a solution of cutch (catechu) containing about one
part by weight of cutch to about five parts by weight of water.
We preferably use that class of cutch known as soft cutch and the water should
be at a temperature of about 120° Fahrenheit.
This mixture is to be well roused and then allowed to stand about two days
(more or less) after which the clear liquor is decanted off and the remaining thicker
portion is passed through a filter press or bags.
The strength of the solution may be varied according to requirements and in
some cases we combine therewith a small per centage of acid which renders the
solution quicker in its action and the resulting clarified beer more useful in
cutting" isinglass in the preparation of brewer's finings.
In using our improved finings we add from about one to two quarts thereof to
a barrel of sour beer, brewer's waste or returns according to the proportion of
suspended solid matter in the liquor under treatment.
The liquor under treatment is after the addition of our improved finings well
roused or stirred after which in some cases it is allowed to stand a sufficient time
for the precipitation of the solid matter when the clear liquor is decanted off and
the residue passed through a non-metallic filter press or bags.
In other cases the entire body of liquid should be passed through a non-metallic
filter press or bags.
As we do not employ any metallic salts or anything deleterious to beer in the
manufacture of our improved finings the clarified liquor resulting from the use of
the same is devoid of the inky or grey appearance and metallic taste which are
communicated to the beer by the use of finings containing the above mentioned
materials.
1007

page_text: Improvements in the Manufacture of Finings for Sour Beer,
Brewers' Waste, and Returns.
We ALEXANDER WILLIAM GILLMAN and SAMUEL SPENCER, both of the Castle
Brewery, St George's Road, Southwark in the County of Surrey, Consulting
Practical Brewers and Analytical Chemists do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The invention has for its object the preparation of finings which are specially
suitable for clarifying sour beers, brewers' waste and returns containing isinglass
together with decomposed yeast, albuminous and other solid matter in suspension.
For this purpose we make a solution of cutch (catechu) containing about one part
by weight of cutch to about five parts by weight of water.
We preferably use that class of cutch known as soft cutch, that is to say, the
Bengal or Bombay Cutch, as that class of cutch dissolves more readily, is more
effective in use, and is cheaper than the harder classes of cutch, but if desired
other classes of cutch may be employed in the preparation of our improved
finings.
.
The water used in the preparation of the solution should be at a temperature
of about 120° Fahrenheit to facilitate the solution of the cutch and to shorten the
time employed therein.
The mixture of cutch and water is to be well roused and then allowed to stand
about two days (more or less) after which the clear liquor is decanted off and the
remaining thicker portion is passed through a filter press or through flannel or other
suitable bags.
"
The strength of the solution may be varied according to requirements and in
some cases we combine therewith a small per-centage of acid which renders the
solution quicker in its action and the resulting clarified beer more useful in
cutting" isinglass in the preparation of brewers' finings.
The addition of acid to the cutch solution is more especially necessary
in cases
where the solution is required to be used in the clarifying of beers which are to be
employed in the cutting of isinglass in the preparation of brewers' finings and in
such case the amount of acid (hydrochloric or sulphuric) added to such solution
should be in the proportion of about 3 to 6 per cent of sulphuric acid and
6 to 12 per cent of hydrochloric acid according to the quantity of solution it
is required to employ in the clarifying process, a larger per-centage of acid being
required in proportion as the quantity of the solution used is reduced.
In speaking of hydrochloric acid and sulphuric acid we refer to the ordinary
commercial acids.
In using our improved finings we add from about one to two quarts thereof to
a barrel of sour beer, brewers' waste or returns according to the proportion of
suspended solid matter contained in the liquor under treatment.
The liquor under treatment is after the addition of our improved finings well
roused or stirred after which in some cases it is allowed to stand a sufficient time

page_text: for the precipitation of the solid matter, when the clear liquor is decanted off and
the residue passed through a non-metallic filter press or through flannel or other
suitable bags, in order to prevent the communication of color and of a metallic or
inky taste to the beer.
In other cases the entire body of liquid should be passed through a non-metallic
filter press or through flannel or other bags, this is required in cases where the said
liquid contains 80 large a proportion of finings that it will not become clear or
partially clear by standing.
As we do not employ any metallic salts or anything deleterious to beer in the
manufacture of our improved finings the clarified liquor resulting from the use of
the same is devoid of the inky or grey appearance and metallic taste which are
communicated to the beer by the use of finings containing the above mentioned
materials.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :—
The manufacture of finings from cutch (catechu) substantially as herein described
and for the purpose stated.