cooling, heating and condensing apparatus
Year: 1886

page_text: Date of Application, 25th May, 1886.
Complete Left, 23rd Dec., 1886.
Complete Accepted, 25th Jan., 1887.
RESERVI
[Communicated from abroad by JULIUS DIETZE, of Dresden, Saxony, German
Empire, Manufacturer of Copper Apparatus.]
1. JOHN CLAYTON MEWBURN, of 169 Fleet Street, in the City of London, Fellow of
the Institute of Patent Agents do hereby declare the nature of this invention to he
as follows:-
:-
The improvements in surface cooling, heating and condensing apparatus, which form
the subject of this invention and which are hereinafter described, combine the following
advantages
1. The form chosen for the body over which the liquid to be cooled will flow
downwards, allows of using the cooling liquid under high pressure within such body,
while at the same time the body itself may be made of thin sheet metal, so as to
facilitate the exchange of temperatures, and there will be no necessity for using internal
stays to preserve the form of the body against the pressure of the internal liquid.
2. The arrangement of the apparatus allows of a ready and easy increase of cooling
surface, because such cooling surface is distributed over a number of single bodies,
which may be increased by additional bodies and the latter may be readily combined
with the system of piping and channels or gutters of the apparatus.
3. In addition to the external air and to the internal cooling liquid-such air acting
from outside of the apparatus and such liquid from the inside of the apparatus upon
the liquid under treatment a third agent, internal air, preferably cooled artificially
or otherwise, may be used to act upon the cooling liquid, while the latter rises in
temperature during the performance of its duty.
The apparatus is composed of a number of cooling bodies in the form of pipes.
Each cooling body consists of an outer pipe and an inner pipe. The outer pipe is
made of thin sheet metal (preferably copper); the surface of this pipe may have the
usual undulated or corrugated form, in which the rings forming the undulations are
[Price 8d.]

page_text: parallel to each other. The inner pipe is also preferably made of thin sheet metal;
this pipe is of smaller diameter than the smallest internal width of the outer pipe. The
inner pipe may be of smooth surface; or it may be undulated or corrugated if
preferred, in which case the undulations of the outer and inner pipes should be in such
a relative position, that the cooling liquid rising in the annular space between the
two pipes comes in repeated and changing contact with the internal surface of the
outer pipe.
The undulations of the inner pipe may be made in any convenient manner
if these pipes are of cast metal, the undulations may be produced by ring-shaped
ribs, projecting horizontally. The two pipes, put concentrically together, are
united by soldering or any other convenient method near their top and bottom,
so that a hollow receiver of annular cross section is formed. between them, which
at the bottom, is connected with the inlet pipe for the cooling liquid and at top,
with tho outlet pipe of the same. The liquid under treatment to be cooled (such as
beer, for example) is brought by a channel or gutter to the top of the apparatus and
flows downwardly over the undulations on the exterior of the outer pipe; at bottom it
is collected by another channel or gutter and led away. The outer pipe may be
provided near its bottom with a flange by which it is connected or fixed to the bottom
of the collecting channel or gutter. This bottom is provided with a hole for each
cooling body, so that the lower open end of the inner pipe may protrude beyond said
bottom. In the same manner the upper open end of the inner pipe penetrates through
the bottom of the upper channel or gutter and protrudes beyond this channel.
It will be evident from the foregoing description, that the outer and inner pipes may
be subjected to a considerable pressure of the liquid rising between them, without
requiring any stays or binding connections between them. The undulated surface of
the outer pipe has great power of resisting internal pressure, while the pressure acting
against the inner pipe will be unable to alter the form of this pipe.
It also follows from the disposition or arrangement of the apparatus as specified that
an increase of cooling surface may easily be effected by the mere addition of the
described bodies composed of the inner and outer pipes. It is also evident, that air may
be allowed or caused to flow through the inner pipe which is open at both ends and
such air will exert a cooling effect upon the inner surface of this pipe, thereby
counteracting the increase of temperature of the cooling liquid that rises in the annular
receiver. This current of cooling air may be directed from bottom to top, or in the
opposite direction, in which latter case it will flow in an opposite direction to the
cooling liquid. The upper ends of all the inside pipes may be combined by one
common pipe and also all the lower ends of these pipes by another common pipe, so as
to take cooling air from any convenient source, such, for instance, as an ice cellar or
a refrigorating machine.
The apparatus which has been described in its use as a cooling apparatus, may of
course be in a similar manner used as a heating apparatus or as an apparatus for
condensing purposes. As a heater the liquid. under treatment may flow externally,
the heating agent passing through the annular receiver. When the apparatus is used
as a condenser, the gases under treatment may be admitted into the annular receiver
and will be acted upon in a most advantageous manner on the outside by the cooling
liquid caused to flow down the exterior of the undulated outer pipe and on the inside by
the current of cold air passing through the inner pipe.

page_text: [A communication from abroad by JULIUS DIETZE, of Dresden, Saxony, German
Empire, Manufacturer of Copper Apparatus.]
I JOHN CLAYTON MEWBURN, of 169 Fleet Street in the City of London, Fellow of
the Institute of Patent Agents do hereby declare the nature of my invention and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The improvements in surface cooling, heating, and condensing apparatus, which form
the subject of this invention and which are hereinafter described, combine the following
advantages:
1. The form chosen for the body over which the liquid to be cooled will flow, allows
of using the cooling liquid under high pressure within such body, while at the same
time the body itself may be made of thin sheet metal, so as to facilitate the exchange
of temperatures, and there will be no necessity for using stays to preserve the form of
the body against the pressure of the internal liquid.
2. The arrangement of the apparatus allows of a ready and easy increase of cooling
surface, because such cooling surface is distributed over a number of single bodies,
which may be increased by additional bodies and the latter may be readily combined
with the system of piping and channels or guiters of the apparatus.
3. In addition to the external air and to the internal cooling liquid-such air acting
from outside of the apparatus and such liquid from the inside of the apparatus upon
the liquid under treatment-a third agent, internal air, preferably cooled artificially or
otherwise, may be used to act upon the cooling liquid, while the latter rises in
temperature during the performance of its duty.
The apparatus is composed of a number of cooling bodies in the form of pipes. Each
cooling body consists of an outer pipe a and an inner pipe (see the annexed drawing).
The outer pipe a is made of the thinnest metal practicable (preferably thin sheet
copper); the surface of this pipe may have the usual undulated or corrugated form,
in which the rings forming the undulations are horizontal and parallel to each other.
The inner pipe is also preferably made of thin sheet metal; this pipe is of smaller
diameter than the smallest internal width of the outer pipe a. The inner pipe may
be of smooth surface; or it may be undulated or corrugated if preferred, in which case
the undulations of the outer and inner pipes should be in such a relative position that
the cooling liquid rising in the annular space between the two pipes a and b comes in
repeated and changing contact with the internal surface of the outer pipe a.
b
The undulations of the inner pipe may be made in any convenient manner; if these
pipes are of cast metal the undulations may be produced by ring-shaped ribs, projecting.
horizontally. The two pipes, a and b, put concentrically together, are united by
soldering or any other convenient method near their top and bottom, so that a receiver

page_text: b
or space of annular cross-section is formed between them, which at the bottom 15
connected with the inlet pipe d for the cooling liquid and at top e with the outlet pipe f
of the same. The liquid under treatment to be cooled (such as beer for example) is
brought by a channel or gutter g to the top of the apparatus and falling over the edge
or, mouth flows downwardly over the undulations on the exterior of the outer pipe a;
at bottom it is collected by another channel or gutter and led away. The outer pipe a
may be provided near its bottom with a flange by which it is connected or fixed to the
bottom of the collecting channel or gutter i. This bottom is provided with a hole for
each cooling body, so that the lower open end of the inner pipe may protrude beyond
said bottom. In the same manner the upper open end of the inner pipe- penetrates
through the bottom of the upper channel or gutter g and protrudes beyond this channel.
It will be evident from the foregoing description that the outer and inner
pipes a and b may be subjected to a considerable pressure of the liquid rising between
The
them, without requiring any stays or binding connections between them.
undulated surface of the outer pipe a has great power of resisting internal pressure,
while the pressure acting against the inner pipe will be unable to alter the form of
this pipe.
It also follows from the disposition or arrangement of the apparatus as specified that
an increase of cooling surface may easily be effected by the mere addition of a further
It is also evident that air may be allowed or
number of the inner and outer pipes.
caused to flow through the inner pipe which is open at both ends and such air will
exert a cooling effect upon the inner surface of this pipe, thereby counteracting the
increase of temperature of the cooling liquid that rises in the annular space or receiver.
This current of cooling air may be directed from bottom to top, or in the opposite
direction. The upper ends of all the inner pipes & may be put in communication with
one common pipe and also all the lower ends of these pipes with another common pipe,
so as to take cooling air from any convenient source, such for instance as an ice cellar
or a refrigerating machine.
The apparatus which has been described in its use as a coling apparatus, may of
course be in a similar manner used as a heating apparatus or as an apparatus for
condensing purposes. As a heater the liquid under treatment may flow externally, the
heating agent passing through the annular receiver. When the apparatus is used as a
condenser, the gases under treatment may be admitted into the annular space or
receiver between the inner and outer pipes and will be acted upon in a most advan
tageous manner on the outside by the cooling liquid caused to flow down the exterior of
the undulated outer pipe a and on the inside by the current of cold air passing througl
the inner pipe b.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, as communicated to me, I declare
that what I claim is :-
In a surface cooling, heating or condensing apparatus the vertical corrugated
pipes (a) and inner pipes (b) open at both ends, substantially as hereinbefore describe
and represented in the annexed drawing.
J. C. MEW
UTA