IMPROVEMENTS IN APPARATUS FOR OBTAINING EXTRACTS FROM ROASTED MALT
Year: 1868

page_text: LETTERS PATENT to James Steel, of Glasgow, in the County of
Lanark, North Britain, Brewer, for the Invention of "IMPROVEMENTS
IN APPARATUS FOR OBTAINING EXTRACTS FROM ROASTED MALT."
Sealed the 6th April 1869, and dated the 8th October 1868.
PROVISIONAL SPECIFICATION left by the said James Steel at the
Office of the Commissioners of Patents, with his Petition, on the
8th October 1868.
I, JAMES STEEL, of Glasgow, in the County of Lanark, North Britain,
Brewer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN APPARATUS FOR OBTAINING EXTRACTS FROM ROASTED MALT," to be as
follows, that is to say :-
This Invention relates to the obtaining of extracts from roasted malt
in the manufacture of malt beverages, and it consists principally in
arranging apparatus to contain the roasted malt in such a way that
the worts may pass from the mash tun through it on their way to
the boiler; and in constructing the extracting apparatus so that the
worts may pass through the roasted malt in an upward direction,
whilst the malt is kept stirred by revolving or other suitable agitators.

page_text: In one modification the extractor is a vessel with a perforated false
bottom, below which the worts enter by a convenient pipe. A space
is formed round the vessel by means of a partition of perforated
metal, or other suitable permeable material, and the roasted malt is
put inside the inner vessel which the partition and perforated bottom
thus form. The worts entering at the bottom pass through the malt,
and through the permeable partition into the surrounding space, ex-
tracting what is wanted from the malt in their passage, and being
drawn off from the outer space by gravitation or by pumping
accordingly as the boilers are placed at a lower or higher level. The
malt may be conveniently stirred by rakes or agitators on a revolving
shaft in a vertical or other convenient position. The permeable
straining material through which the worts pass after being in contact
with the roasted malt may be placed vertically at the sides, horizon-
tally at the top, or in any other convenient position. The vessel
containing the roasted malt may according to another modification be
in the form of a revolving or stationary cylinder, placed horizontally
or otherwise, the worts entering it by a central perforated pipe, and
passing from it through its perforated or permeable sides into a trough
or outer vessel. When an under back is used in connection with the
mash tun the extracting apparatus may be placed between the two,
or wholly or partially within the under back.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Steel in the Great Seal Patent Office on
the 7th April 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
STEEL, of Glasgow, in the County of Lanark, North Britain, Brewer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of October, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James Steel, Her special licence that I,
the said James Steel, my executors, administrators, and assigns, or
such others as I, the said James Steel, my executors, administrators,

page_text: 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 APPARATUS FOR OBTAINING
EXTRACTS FROM ROASTED MALT," upon the condition (amongst others) that I,
the said James Steel, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly 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 next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said James Steel, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and
by the following statement in writing, reference being had to the
accompanying Drawings, that is to say :-
My said Invention relates to the obtaining of extracts from roasted
malt in the manufacture of malt beverages, and it consists principally
in arranging apparatus to contain the roasted malt in such a way
that the worts may pass from the mash tun through it on their way
to the boiler, and in constructing the extracting apparatus so that the
worts may pass through the roasted malt in an upward direction,
whilst the malt is kept stirred by revolving or other suitable agitators.
And in order that my said Invention, and the manner of performing
the same, may be properly understood I have hereunto appended a
Sheet of explanatory Drawings, to be herein-after referred to, and
representing apparatus as constructed and arranged with my improve-
ments.
Figure 1 is a plan of the extractor, with the agitator removed, and
Figure 2 is a sectional elevation showing it in connection with a
mash tun 1, Figure 3. The extractor 2, which is a vessel made by
preference of copper, and of a circular form in plan, is provided with a
perforated false bottom 3, below which the worts enter by a convenient
pipe 4, communicating with the mash tun 1. A narrow space 5 is
formed round the vessel, by means of a cylindrical shell or partition 6,
made of perforated sheet copper or other suitable permeable material,

page_text: and the roasted malt is put inside the inner vessel, which the per-
forated shell 6 and false bottom 3 thus form. The worts entering at
the bottom pass upwards amongst the malt, and thence through the
permeable shell 6 into the surrounding space 5, extracting what is
wanted from the malt in their passage, and being drawn off from the
outer space 6 through a pipe 7, by gravitation or by pumping accord-
ingly as the boilers are placed at a lower or higher level. A rake 8
fixed on a central-vertical shaft 9, and with gearing for working it by
hand or power, is represented as provided for stirring the roasted malt,
but the agitation may be effected in any other convenient way. The
permeable straining material (6) through which the worts pass after
being in contact with the roasted malt may be placed vertically at the
sides, as shown, horizontally at the top, or in any other convenient
position.
The vessel containing the roasted malt may, according to another
modification, be in the form of a revolving or stationary cylinder,
placed horizontally or otherwise, the worts entering it by a central
perforated pipe, and passing from it through its perforated or permeable
sides into a trough or outer vessel.
When an under back is used in connection with the mash tun, the
extracting apparatus may be placed between the two, or wholly or
partially within the under back.
Having thus particularly described my said Invention and the manner
in which the same is to be performed, I have to state that I do not
restrict myself to the precise details herein described or delineated, but
that what I believe to be novel and original, and claim as the Invention
secured to me by the herein-before in part recited Letters Patent is,
the obtaining of extracts from roasted malt by means of improved
apparatus, substantially such as is herein-before described.
In witness whereof, I, the said James Steel, have hereunto set
my hand and seal, this fifth day of April, in the year of our
Lord One thousand eight hundred and sixty-nine.