Year: 1894

page_text: United States of America).
Date of Application (in United Kingdom), 7th Dec., 1894
Complete Specification Left. 7th Dec., 1894-1ccepted, 16th Feb., 1895
Date of Application (in United Kingdom), 7th Dec., 1894
Complete Specification Left. 7th Dec., 1894 - Accepted, 16th Feb., 1895
I, HENRY EMIL DECKEBACH, a citizen of the United States, residing at
No. 171 West Court Street, in the City of Cincinnati, County of Hamilton, State
of Ohio one of the United States of America, Coppersmith, 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 :-
My invention is an improved apparatus for cooling wort after it leaves the boiler
and before it reaches the fermenting tuns. Its object is a simple compact device
arranged to be interposed between the boiler and "hop jack," or between the
boiler and fermenting tuns when the hop jack is not used, for reducing the tempera-
ture of wort without allowing its vapors to escape or the liquid to come in contact
with the atmosphere, which is often laden with deleterious germs, spores,
microbes, &c., in its passage from the boiler to the fermenting vessels. By this
means, also, the volatile oil of the hops, which imparts to malt liquors its delicate
flavor, is not allowed to escape as the liquid is cooled below the temperature at
which the oils become volatilized before it leaves the cooling apparatus.
The invention will be first fully described in connection with the accompanying
drawings and then particularly referred to and pointed out in the claims.
Referring to the drawings, in which like parts are represented by similar
reference letters wherever they occur throughout the various views :
Figure 1 is a central longitudinal section of the simplest form of my improved
apparatus. Fig. 2 is an end elevation of the same.
Fig. 3 is a sectional view taken in central longitudinal horizontal section of my
apparatus having increased cooling surfaces.
Referring first to the simplest form of my invention, represented in Figs. 1 and 2,
the outer case, A, is a plain cylinder, having a receiving branch, a, at its forward
end to be connected to a discharge pipe (not shown) from the hop jack, and a
discharge branch, a', at the opposite end, which is to be connected to a pipe leading
to the fermenting tuns. A flanged cast metal ring, a², is passed over the forward
or open end of the cylinder, A, and desured to the cylinder by a brazing, or in any
suitable manner.
Within the cylinder, A, is a cylinder, B, the open end of which is secured in a
flanged ring, b. The rings, a² and b, are radially slotted to pass bolts, a³, which
are pivoted between lugs, a', which lugs project from the rings, a³.
The two
rings, a and b, are detachably connected by these bolts and the wing nuts, a³. One
end of the cylinder, B, is closed by a removable head or disk, 61, which is held
against the ring, b, by bolts, 62. These bolts also pass through the outwardly
projecting flange, c, of the cap, C, and hold it in place."
To the inner end of the cylinder, B, is secured one end of a tube, D, which is
spirally coiled around the tube, B, to near its opposite end. The coil, D, terminates

page_text: in a straight arm, which passes through the disk, ', and flange, c, and connects with
the pipe, C, which pipe connects with the cap, C.
Within the cylinder, B, is a cylinder, E. The inner end of this cylinder is open
and rests against the convex end of the cylinder, B. Near the inner end of this
cylinder is a series of perforations to communicate with the space between the outer
wall of the cylinder, E, and the inner wall of the cylinder, B. The opposite end
of the cylinder, E is reduced and terminates in a tube, e, which extends centrally
through the disk or head, b', and the head or nut of the cap, C. The opening in
the cap is provided with a packing gland, c', to prevent leakage around the
tube, e.
The cooling liquid, from any suitable source, is passed into a cylinder, E, through
the tube, e, a portion of it passing into the space between the cylinders, B and E,
through the perforations in the end of the cylinder, E, but the main portion passes
through the coil, D, and is discharged into the pipe, C₁, to be again returned to the
source of supply, if desired, in the usual way.
The wort passes from the hop jack through the branch, a, thence around the
cylinder, B, in a spiral path controlled by the spiral coils of the tube, D, and passes.
out to the fermenting tuns through the branch, a'. When the hop jack or boiler is
a sufficient distance above the cooling apparatus, gravity may be relied upon to
carry the wort through the cooler, but ordinarily an exhaust pump is interposed io
the pipe between the cooler and the fermenting tuns.
When it is desired to cleanse the vessel, the wing nuts, a³, are unscrewed, the
bolts swung back, and the tube, e, disconnected from its supply pipe, when the
whole apparatus, inside of the cylinder, A, may be removed, and the coil and
the inside of the cylinder, A, thoroughly cleansed. If it is desired to cleanse the
inner cylinders, B and E, the bolts, 2, are removed, when the head or disk, b', with.
the cylinder, E, may be removed and cleansed. There is a series of perfora-
tions, 63, made in the disk surrounding the tube, E, to allow the escape of the
cooling liquid into the cap, C, and thence through the tube, C¹.
I have shown the. apparatus in a horizontal position, supported upon a truss, F,
having circular seats, f, upon which the cylinder, A, rests, and supporting legs, f,
which may be secured to the floor; but the apparatus may be suspended in
hangers from the ceiling, if desired, and in some cases, where it is desirable to
economize space, the apparatus may be placed in a vertical position.
It will be seen that there is no fitting required, as the coil, D, supports itself and
cylinder, B, in proper position, and the inner cylinder, E, is supported at its inner
end by bearing against the concave end of the cylinder, B. The joints between
the rings, a and b, and head, b', may be made close by a suitable packing, or by
being dressed off true.
The form of my invention shown in Fig. 3 is provided with a double set of
cooling coils and cooling jackets, adapted to receive the cooling liquid from two
sources of supply, the wort being compelled to travel in a spiral path around both
sets of coils and in contact with the cooling surfaces of the double sets of cylinders.
Briefly described, there are two jackets or chambers for two sets of coils, with
but one continuous passage for the wort in the spiral path around both sides,
practically doubling the cooling capacity of the apparatus without occupying
additional space. The outer cylinder, A', and the inner cylinder, B', are connected
together at their forward ends by flanged rings, a and b, same as in Fig. 1, leaving
a jacket between the two cylinders for the coil, D'.
Within the cylinder, B', is a cylinder, G, which has around it a ring, 9, which
comes opposite a similar ring, &, on the extended end of the cylinder, B', the two
being bolted together, keeping the cylinders, G and B', apart, to form the jacket
between them. The inner end of the cylinder, B', is contracted to pass within a
grooved ring or casting, g', the ends of the cylinders, B' and G, entering the groove
in this ring and being brazed or soldered to it.
93, is a ring which is bolted onto the grooved ring, gl, to close the end of the
jacket between the cylinders, G and B'.

page_text: Within the cylinder, G, is the central cylinder E¹, having a reduced neck like
the cylinder, E, in Fig. 1, to pass through the head, g, which closes the end of
the cylinder, G, said cylinder having a flanged ring, 9', to which the head, g³, is
bolted.
H, is a coil wound spirally around the cylinder, E', in the jacket formed between
said cylinder and the cylinder, G.
All the coils in my apparatus are made to just snugly fit the jackets between the
cylinders, so that the wort is compelled to travel in the spiral path between
the coils and in contact with the cylinders.
The cooling liquid from one source of supply enters the cylinder, E', through the
pipe, el, passes to the opposite end of the cylinder, thence into the coil, H, through
which it is discharged through the pipe, h, which passes through the head, g³, of
the cylinder, G. The cooling liquid from the other source of supply passes into
the coil, D¹, through the pipe, d', which passes through the outer shell, A',
through the flanged ring, 4, and connects with the coil. After passing through
the coil to the inner end of the cylinder, B¹, the opposite end of the coil commu-
nicates with the jacket between the cylinders, B' and G, and is discharged through
the pipe, 66.
The wort passes from the boiler or hop jacket through the pipe, a', thence in the
spiral path between the coils of cylinders, B' and G, from which it passes through
the rings, and 92, into the space, as, between the rings and the end of the
cylinder, A; thence in the spiral path between the coils of the pipe, D', in contact
with the outer wall of the cylinder, B', and inner wall of the cylinder, A¹, and is
discharged through the pipe, a, leading to the fermenting tuns.
The apparatus, with the exception of the flanged rings which connect the
cylinders, is made of copper, and the purpose of bolting the cylinders together in
the manner shown, is to render them readily detachable for cleansing, or removing
any scales or sediment that may adhere to the surfaces, with which the wort may
come in contact.
In practice, I have found that the device, for a brewery of medium capacity
should be in about the following proportions: About ten feet long; the outside
shell thirteen inches in diameter; the cylinder next within it ten inches; the
cylinder, G, seven inches and the inner cylinder four inches; the coils being one
and one-half inches in diameter, so as to snugly fit the spaces between the cylinders,
in order to retard the travel of the wort and keep it in contact with the cooling
surfaces a sufficient time to reduce the temperature to the desired degree for
entering the fermenting tuns; but it is obvious that the proportions may be varied,
owing to the capacity of the brewery, and the simple form shown in Figs. 1 and 2
has been found sufficient for a brewery of small capacity and, of course, this form
may be duplicated and used instead of the form shown in Fig. 3, but would of
course occupy more space. It is also obvious that the cap, C, may be dispensed
with, as its principal object is to conduct the cooling liquid from both the coil and
the jacketed space around the central tube to the central discharge pipe, C, in
which case an opening could be made in the head; b, and the branch of the
pipe, C', connected to said opening by a suitable coupling; but the form shown is
deemed the best, as the cooling liquid, after being, partially heated by the
passage of the wort, would pass out at all points around the neck of the
induction pipe, instead of being compelled to flow through a single opening
below it.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination, in a wort cooler, of the outer and inner cylinders separated
from each other to form jackets for the passage of the wort and the cooling liquid,
a spiral coil within the wort jacket for the cooling liquid, said coil and the walls of
the jacket being in close proximity to retard the movement of the wort through

page_text: the jacket and keep it in contact with the cooling surfaces, the central cylinder
for the cooling liquid, communicating with the coil, induction and eduction
pipes communicating with the. wort jacket, and similar pipes to receive the
cooling liquid into the device and discharge it therefrom, substantially as shown
and described.
.
2. The combination of the outer cylinder, having closed ends, an inner cylinder
forming, with the outer cylinder, a closed jacket for the passage of wort, a central
cylinder separated from the cylinder forming the inner wall of the wort jacket,
having a reduced neck passed to the outside of the cooler, and separated from the
surrounding cylinder, but communicating with it through perforations in the inner
end of said central cylinder, the inner and intermediate cylinders together forming
a jacket for the cooling liquid, the cooling coil connected to the end of the
intermediate cylinder and coiled around the wort jacket, said coil in proximity to
the walls of the jacket to compel the wort to travel in a spiral path, an induction
pipe at one end of the said wort jacket, and an eduction pipe at the opposite end,
to connect with the pipe leading to the fermenting tuns, a pipe to introduce cooling
liquid to the inner cylinder, and a discharge pipe leading outside of the cooler
for said cooling liquid after it has passed through the inner cylinder and coil,
substantially as shown and described.
'
3. In a wort cooler, the combination of the outer case or cylinder, A, having
induction branch, a, and eduction branch, a', the flanged ring, a², at one end of
said cylinder, the inner cylinder, B, having flanged ring, b, for coupling the inner
and outer cylinders, and closing the jacketed space between them, the spiral coil, D,
connected to the inner end of the cylinder, B, coiled around it toward the opposite
end, and having a branch passing to the outside of the cooler, the inner cylinder, E,
having a reduced neck passing through the end of the cooler to receive the pipe
conveying the cooling liquids, said cylinder, E, being open at the inner end and
bearing against the end of the intermediate cylinder, B, and having its end
perforated to pass portions of the cooling liquid from the cylinder, E, around the
space in the jacket between it and the cylinder, B, the head, , closing the end
of the cylinder, B, and perforated to pass the cooling liquid from the jacketed
space between the cylinders, E and B, substantially as shown and described.
4. In a wort cooler, the combination of the outer cylinder, having induction
pipe at one end and eduction pipe at the other, flanged ring around the open end
of said cylinder, an inner cylinder having flanged ring closing the jacket between
the said cylinder and the outer cylinder, bolts and nuts for detachably securing the
two cylinders together, perforated heads secured to the front end of said inter-
mediate cylinder, a central cylinder having reduced neck passing centrally through
said head, having its inner end open to bear against the concavo-convex end of
the surrounding cylinder and perforations communicating with the jacket between
the inner and intermediate cylinders, the cap, C, surrounding the reduced neck
of the inner cylinder, the cooling coil, D, connected to the inner end of the
intermediate cylinder and coiled around said cylinder at the forward end, forming
a spiral path in the jacket between the intermediate and outer cylinders, the
discharge pipe, C', for the cooling liquid, communicating with the space between
the inner and intermediate cylinders, and the branch in the coil passing through the
head of the inner cylinder and communicating with said discharge pipe, whereby
the wort is compelled to travel in a spiral path in the jacketed space between the
outer and intermediate cylinders and the cooling liquid passed to the inner
cylinder and from there partly through the coil and partly in the space or
jacket between the inner and central cylinders, substantially as shown and
described.
5. The combination of the outer cylindrical case a central cylinder, having its
open end protruding through the end of said case, double cylinders intermediate
the central cylinder and outer case, said intermediate cylinders being closed at their
ends to form a jacket for the cooling liquid, and said cylinders forming com-
municating wort jackets between the outer case and intermediate cylinder, and

page_text: the intermediate cylinder and central cylinder, the wort supply pipe connected
to the inner jacket, the wort discharge pipe leading from the outer jacket, cooling
coils in both the inner and outer wort jackets, a supply pipe for the outer coil, the
opposite end of said coil connected to discharge into the jacket between the
intermediate cylinders, the discharge pipe leading from said jacket at its forward
end, said inner coil connected to the inner end of the central cylinder to receive
the cooling liquid from it, and the opposite end of said inner coil passing to the
outside of the cooler, and a supply pipe for the cooling liquid connected to the
front end of the central cylinder, substantially as shown and described.
6. The combination of the outer cylindrical case, the central cylinder having its
open end protruding through the end of said case, the two cylinders closed at their
ends intermediate the central cylinder and outer case, and detachably connected
to the outer case and to each other at their inner ends by ringed flanges opening
communication between the spaces or jackets between the inner cylinder and
intermediate cylinder, and between said intermediate cylinder and the outer case,
cooling coils in said jackets, the inner coil communicating with the central
cylinder and the outer coil communicating with the jacket between the inter-
mediate cylinders, the wort supply and discharge pipes communicating with said
jackets, and the supply and discharge pipes for the cooling liquids, substantially as
shown and described.
Dated this 26th day of November 1894.
HENRY EMIL DECKEBACH.
Boult & Wade,
Agents for the Applicant.