AN, IMPROVED APPARATUS FOR COOLING BEER AND OTHER MALT LIQUORS
Year: 1868

page_text: LETTERS PATENT to. Wilhelm, Müller and Gottlob Englert, both of
Earl's Court, in the County of Middlesex, (Coppersmiths, for the
Invention of "AN, IMPROVED APPARATUS FOR COOLING BEER AND OTHER
MALT LIQUORS."
Sealed the 10th November 1868, and dated the 13th June 1868..
PROVISIONAL SPECIFICATION left by the said Wilhelm Müller and
Gottlob Englert at the Office of the Commissioners of Patents, with
their Petition, on the 13th June 1868..
We, WILHELM MÜLLER and GOTTLOB ENGLERT, both of Earl's Court,
in the County of Middlesex,. Coppersmiths, do hereby declare the
nature of the said Invention for "AN IMPROVED APPARATUS, FOR COOLING
BEER AND OTHER MALT LIQUORS," to be as follows, that is to say:-
The Invention consists in an improved construction of apparatus for
cooling beer and other malt liquors requiring to be cooled in their
manufacture, and by which a large cooling, surface is. obtained and.
great facility is afforded for cleaning and repairing same..
The apparatus consists of a number of troughs or vessels open at
the top with flat sides. and ends but semicircular at bottom. These

page_text: vessels are placed side by side at a certain distance apart, but are
connected together from side to side at the top; they are formed with
double bottoms and sides, the top picces connecting them being also
double, the intervening space formed by the double surface serving
for the passage of the cooling water, as hercin-after described. These
vessels are connected together by end plates screwed together and fixed
to the framework, or they may be so fitted together as to be easily
removeable; a pipe furnished with a stop-cock at the end runs along
and is connected to the bottoms of these vessels for the discharge of
the water that remains at the termination of the cooling operation,
and an opening (closed as herein-after described) is made in the lower
part of one end of each vessel, from which a pipe passes to connect
it to the adjoining vessel. The pipe from the last vessel is provided
with a stop-cock by which the beer is discharged at the end of the
operation, these pipes are each provided with a screw union so that
the vessels may be easily separated for cleaning or repairs. In each
of the said troughs or vessels is placed another or inner trough, a
space being left between them and the sides and bottoms of the other
troughs; the inner or smaller troughs are connected together by a pipe
from one to the other, each of these pipes being provided with a screw
union so that these troughs may be casily disconnected for cleaning
or repairs; the smaller troughs extend above the larger troughs and
are for containing water, while the space between the large and small
troughs is for the beer or other malt liquor to be cooled. By this
arrangement the hot beer which enters by a suitable entrance pipe
at one end of the apparatus passes between two currents of cold water
which enter by suitable pipes at the other end of the apparatus, the
water is discharged during the operation by two discharge nozzles one
for the large and one for the small troughs, and the water that remains
at the end of the operation is discharged from the space between the
double surfaces of the large troughs by the pipe hercin-before described.
A suitable nozzle is also provided for the discharge of the beer during
the operation. The small troughs are provided with end plates or flanges
which work in rebates or grooves so that they can slide up and down,
these flanges extend below the bottoms of the small troughs so as
to close the openings herein-before described in the ends, of the large
troughs or vessels. Above the centre of the apparatus is a horizontal
shaft with crank handle working in, uprights, from the framework of
the apparatus, this shaft is connected by straps, gearing or other suitable

page_text: arrangement to the small troughs, and when turned it raises them.
After the cooling operation the water of the large troughs is discharged.
as herein-before described, the small troughs are then raised and their
end plates uncover the openings in the large troughs, and the beer
remaining in the apparatus is discharged by means of the stop-cock
provided for that purpose. A suitable valve in the bottom of each of
the small trouglis is now opened, and the water they contain passes
into the space for the beer and is discharged by the same stop-cock
as the beer.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Wilhelm Müller and Gottlob Englert in the Great
Seal Patent Office on the 12th December 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILHELM
MÜLLER and GOTTLOB ENGLERT, both of Earl's Court, in the County
of Middlesex, Coppersmiths, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of June, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Wilhelm Müller and Gottlob Englert,
Her special licence that wo, the said Wilhelm Müller and Gottlob Englert,
our executors, administrators, and assigns, or such others as we, the
said Wilhelm Müller and Gottlob Englert, 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 Kingdon of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "AN IMPROVED APPARATUS FOR COOLING BEER
AND OTHER MALT LIQUORS," upon the condition, (amongst others), that we,
the said Wilhelm Müller and Gottlob Englert, exccutors or
administrators, by an instrument in writing under our, 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.

page_text: NOW KNOW YE, that we, the said Wilhelm Muller and Gottlob
Englert, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being
had to the Drawing hereto annexed, and to the figures and letters
marked thereon, that is to say:-
This Invention consists in the construction of an improved apparatus
or refrigerator for cooling wort and other malt liquors requiring to be
.cooled in their manufacture, and by which a large cooling surface is
obtained and great facility is afforded for cleaning and repairing the
apparatus.
To make our Invention easily understood we will proceed to describe
the same by reference to the accompanying Drawing, in which Figure 1
is a plan of our improved refrigerator and Figure 2 an elevation of the
same, half being shewn in section on the line A, B, of Figure 1.
The apparatus consists of a series of troughs or chambers a, a, of
tinned sheet copper open at the top and formed with flat sides and ends
semicircular at bottom. These chambers are placed at a short distance
apart and are connected together from side to side at the top b, b. They
are formed with double bottoms and sides as shewn; the top pieces b, b,
connecting them are also double, the intervening spaces c, c, c, serving
for the passage of a portion of the cooling water, as herein-after
described. These chambers rest against end plates d, d, the edges of
which slide in grooves formed by the copper pieces e, e, soldered to the
plates ff; the end plates d, d, are thus easily removed for cleaning or
repairs. The space c, c, c, is in communication with the pipe g through
its whole length, the said pipe being supplied with water from the water
inlet pipe h. i, i, is a pipe running along the bottom of the apparatus
and connected with the bottoms of the chambers a, a, and serves for the
discharge of the water that remains at the termination of the cooling
operation. The pipe i, i, is provided with a stop-cock for the discharge
of the water, and is formed in several pieces connected by screw unions
or otherwise. In each of the troughs or chambers a, a, is placed another
or inner trough or chamber k, k, a space l, 1, being left between them
and the sides and bottoms of the troughs a, a. This space l, l, is for
the passage of the wort or other malt liquor to be cooled; the inner
troughs k, k, are for containing water and are connected together by
the pipes m, m, through which the water passes from one vessel / to

page_text: the other; these pipes are provided with screw unions m³, m³, so that
the chambers may be easily disconnected for cleaning or repairs. n, n,
openings in the end plates d and f communicating with the pipe n¹ for
the discharge of the wort that remains in the space 1, 1, at the termination
of the cooling operation; o, inlet pipe for the wort which runs into the
pipe p, p, communicating through its whole length with the space 1, 1;
o', outlet pipe for the cooled wort; k', pipe supplying the vessels. with
water from the inlet pipe ; ', outlet pipe for the water from the pipe q
communicating with the space c, c, and also with the vessels k, k, by
means of the pipe 1. The end plates of the vessels k, k, are made so as
to fit and slide between the flanges 8, 8, on the end plates d, d, so that
the said vessels may be raised when required. The end plates of the
vessels k, k, and the flanges 8, 8, of the end plates d, d, are not shewn
in the section Figure 2 in order to avoid confusion. t, t, are iron pieces
bolted together with screw nuts and also bolted to the vessels k, k; these
iron pieces t, t, thus form a strong bar connecting the vessels k, k,
together, and by which they may be raised by any suitable tackle adapted
to the apparatus. The vessels k, k, have each at their lower part an
opening closed by a screw cap or other suitable means for the discharge
of the water they contain at the termination of the operation of cooling
the wort.
The operation of cooling the wort is as follows:-The cooling water
brought by the inlet pipe enters the space c through the pipe g, and
enters the vessels k, k, through the pipe k', whilst the wort to be cooled-
enters the space from the opposite side of the apparatus from the inlet
pipe o through the pipe p. As soon as the apparatus is full the wort
which is cooled by its passage through the two currents of water con-
tained in the space c, c, and the troughs k, k, enters the pipe p' and is
discharged through the outlet pipe o¹, and the water will pass from the
space c into the pipe q and will be discharged through the outlet pipe /',
while the water from the troughs k will also pass into the pipe q through
the piper and be discharged by the outlet pipe . The wort and water
will continue to pass through the apparatus so long as the supply at the
required pressure is kept up. At the termination of the operation the
apparatus will be full of water and wort; the latter is discharged through
the stop-cock of the pipe n', n', communicating with the wort space
by the holes n, n, in the end plates; the water from the space c, c, is
discharged through the pipe i, i, communicating with the bottoms of

page_text: the chambers a, a; and for the discharge of the water from the
vessels k, k, they are raised by any suitable tackle adapted thereto, the
screw caps being then removed from the openings in the lower parts of
the said vessels the water they contain will fall into the space 1, 1, from
which it is discharged through the stop-cock in a similar manner to
that in which the wort was discharged.
And having now described the nature of the said Invention, and
the manner in which the same is to be performed, we would have it
understood that we do not confine ourselves to any precise proportion or
dimension of the several parts of the apparatus herein described; but
what we claim is, the peculiar arrangement and construction of the
apparatus whereby the wort or other malt liquor to be cooled is caused
to pass between two cooling surfaces of large area, substantially in the
manner and for the purposes herein-before described and represented in
the accompanying Drawing.
In witness whereof, we, the said Wilhelm Müller and Gottlob
Englert, have hereto set our hands and seals, this Twelfth day
of December, in the year of our Lord One thousand eight hundred
and sixty-eight.
Witness,
W. A. GILBEE.
WILHELM MÜLLER. (L.S.)
GOTTLOB ENGLERT. (L.S.)