Improvements in. Stoves for Heating Water, especially applicable for use with Baths.
Year: 1893

page_text: Date of Application, 6th Feb., 1893
Complete Specification Left, 22nd Aug., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in. Stoves for Heating Water, especially applicable for
use with Baths.
A communication by MAXIMILIAN GALLEY, of Hanover, in the Empire of
Germany, Engineer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to a bath stove which is intended mainly to be heated by
gas and it has for its object, firstly, to form a chamber in the interior of such a
stove, in which the gas will be thoroughly combusted before coming in contact with
the cold walls enclosing the water, the formation of the poisonous acetyl gas is
thus avoided, and the greatest heat is secured because the gases have not been
prematurely cooled by contact with the cold surfaces; secondly, to conduct the hot
gases produced, so closely along the water walls that each particle of these gases
must come in contact with the walls and be thereby forced to impart its heat to the
walls and thus to the water; thirdly, to so construct the stove that whilst
maintaining the conditions above described, any desired spot may be quickly laid
open, in case there should be any leakage, so as to be reached by the soldering iron
by merely drawing apart the cylindrical sections of the stove.
The following are the means employed for attaining these objects-
The bath stove is composed of separate cylindrical or prismatic bodies of such
various diameters that, when inserted in one another, there will be only narrow
interstices between them through which the hot gases pass. These cylinders or
prisms, so far as they are merely employed for conveying the gases, are formed of
a simple sheet of metal, but those through which the stream of water passes are
each composed of two such sheet metal cylinders. Of the latter, one at least is
preferably provided with a double bottom which contains water so that it may be
used as a heating surface whilst the open side of the cylinder serves to slip it over
a second cylinder.
In order to render the combustion as complete as possible, one of the cylinders or
a large portion of its interior, is utilised as a combustion chamber.
The arrangement is usually such that the fire is connected with the innermost
cylinder, and that one or more water holding cylinders are placed over it, which
leave open small annular spaces for the circulation of the gases, and the outermost
or topmost of which is connected with the chimney.
The mode of construction will best be understood by reference to the accom-
panying sheet of drawings. The modifications of Figure 1, which are shown on the
drawing, are actually only an enlargement of the heating surface, or an extension
of the course which the gases must take along the walls of the vessel holding the
water.
Figure 1 shows a mode of construction in which the above described principle is
employed in the simplest manner. V is the chamber in which the fuel, gas, coal,
etcetera, may be completely consumed. B is the vessel in which the moving water
is contained, and is a sheet metal cylinder which may be further protected by
means of asbestos or other suitable insulating material against too rapid trans-
mission of the heat. The water passes at W into B and leaves the same at w, and
the hot gases or products of combustion flow in the direction of the arrows
starting from c, close along the walls of B in order to escape into the open

page_text: air or into
hand side.
suitable chimney through the tube nozzle at the bottom at the left
Figure 2 shows in general a similar arrangement to Figure 1, but in this case the
cylinder c is replaced by a cylindrical vessel B which also conveys water. Connec-
tion between the two vessels is then established, as shown, by means of the tube R
or by any other easily detachable tube.
In Figure 3, the water container B has openings at its upper end through which
the hot gases carried from the sheet metal cylinder c reach the outer surface of B.
The cylinder c may also in this case be insulated.
Figure 4 shows a similar arrangement only in this case also the sheet metal
cylinder in Figure 3 is replaced by a cylindrical water vessel.
In Figure 5 a cylindrical water-container B is provided with an inner and an
outer sheet metal cylinder c and C for the passage of the heated gases. The tube
for carrying off the exhausted gases is in this case placed at the top. The two
cylinders C and c may also in this case he further provided with an insulating
lining.
Figure 6 is similar to Figure 5 only the inner sheet metal cylinder c is again
replaced by a vessel for holding water. In Figure 7, it is the outer sheet metal
cylinder C in connection with which such a water container is employed.
Figure 8 shows again a similar mode of construction to 5, but in this case both
conveying cylinders C and c are replaced by water holding vessels.
Figure 9 is similar to Figure 8 only in this case the whole arrangement is
reversed, which may also be done with other suitable forms of construction herein-
before described.
Figure 14 shows a modification of Figure 1 in which the inner wall of the
container B is formed of corrugated sheet metal in order to obtain a larger
heating surface. In Figure 1B the corrugated plate is replaced for the same
purpose by a series of pipes which are arranged somewhat close to the wall of the
container B.
Figures 1 and 1º also show similar modifications only that the apparatus is not
of a round but of a four-cornered parallelogram cross section.
It may also be of
any other suitable form. These last. named modifications may be employed with
any other of the figures shown as well as with Figure 1.
In Figure 6 another arrangement is shown by which a longer course is insured
for the hot gases. This arrangement consists in the arrangement of one or more
spirals S of sheet metal or wire or the like between each two walls of the water
container or between the walls of the container and the cylinder c; this
arrangement may also be employed with any of the forms of construction shown up
to Figure 9.
Dated this 4th day of February 1892
COMPLETE SPECIFICATION.
Improvements in Stoves for Heating Water, especially applicable
for use with Baths.
A communication by
MAXIMILIAN GALLEY, of 33, Ostenstrasse, Hanover, in the
Empire of Germany, Engineer.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster and 323, High Holborn, in the
County of Middlesex, Civil Engineer, 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:-
This invention relates to a bath stove which is intended mainly to be heated by
gas, and it has for its object, firstly, to form a chamber in the interior of such a

page_text: stove, in which the gas will be thoroughly combusted before coming in contact with
the cold walls enclosing the water, (which is brought about by means of the sheet
iron cylinder c Figs. 1, 5 & 7) the formation of the poisonous acetylene gas is thus
avoided, and the greatest heat is secured because the gases have not been pre-
maturely cooled by contact with the cold surfaces; secondly, to conduct the hot
gases produced so closely along the water walls that each particle of these gases
must come in contact with the walls and be thereby forced to impart its heat to the
walls and thus to the water; thirdly, to so construct the stove that, whilst main-
taining the conditions above described, any desired spot may be quickly laid open,
in case there should be any leakage, so as to be reached by the soldering iron by
merely drawing apart the cylindrical sections of the stove.
The following are the means employed for attaining these objects
The bath stove is composed of separate cylindrical or prismatic bodies of such
various diameters that, when inserted in one another, there will be only narrow
interstices between them through which the hot gases pass. These cylinders or
prisms, so far as they are merely employed for conveying the gases, are formed of
a simple sheet of metal, but those through which the stream of water passes are
each composed of two such sheet metal cylinders. Of the latter, one at least is
preferably provided with a double bottom which contains water, so that it may be
used as a heating surface, whilst the open side of the cylinder serves to slip it over
a second cylinder.
In order to render the combustion as complete as possible, one of the cylinders or
a large portion of its interior, is utilized as a combustion chamber.
The arrangement is usually such that the fire is connected with the innermost
cylinder, and that one or more water holding cylinders are placed over it, which
leave open small annular spaces for the circulation of the gases, and the outermost
or topmost of which is connected with the chimney.
The mode of construction will be best understood by reference to the accom-
panying sheet of drawings.
.
The modifications of Figure 1, which are shown on the drawing, are actually
only an enlargement of the heating surface, or an extension of the course which
the gases must take along the walls of the vessel holding the water.
Figure 1 shows a mode of construction in which the above described principle
is employed in its simplest manner. V is the chamber in which the fuel, gas,
coal, etcetera, may be completely consumed. B is the vessel in which the moving
water is contained, and c is a sheet metal cylinder which may be further protected
by means of asbestos or other suitable insulating material against too rapid trans-
mission of the heat. The water passes at w into B and leaves the same at W, and
the hot gases or products of combustion flow in the direction of the arrows
starting from c, close along the walls of B in order to escape into the open air
or into a suitable chimney through the tube nozzle at the bottom at the left
hand side.
Figure 2 shows, in general, a similar arrangement to Figure 1, but in this case
the cylinder c is replaced by a cylindrical vessel B', which also conveys water.
Connection between the two vessels is then established, as shown, by means of the
tube R or by any other easily detachable tube.
Figure 2, Sheet 2, is a section on the line g-h of Figure 2.
In Figure 3, the water container B has openings at its upper end through which
the hot gases, carried from the sheet metal cylinder c, reach the outer surface of B.
The cylinder c may also, in this case, be insulated.
Figure 4 shows a similar arrangement, only in this case also the sheet metal
cylinder in Figure 3 is replaced by a cylindrical water vessel.
In Figure 5, a cylindrical water container B is provided with an inner and an
outer sheet metal cylinder c and C for the passage of the heated gases. The tube
for carrying off the exhausted gases is, in this case, placed at the top. The two
cylinders C and c may also in this case be further provided with an insulating
lining.

page_text: Figure 6 is similar to Figure 5, only the inner sheet metal cylinder c is again
replaced by a vessel for holding water.
In Figure 7, it is the outer sheet metal cylinder C in connection with which such
a water container is employed.
Figure 8 shows again a similar mode of construction to 5, but, in this case, both
conveying cylinders C and c are replaced by water holding vessels B, B1 and B2.
Figure 9 is similar to Figure 8, ouly, in this case, the side walls of the
intermediate cylinder B¹, instead of being in communication by a cross wall at their
upper ends, have this cross wall at their lower ends. This may also be done with
other suitable forms of construction herein before described.
Figure 10 shows several cylinders fitting in one another and covered with a
similar one in the form of a hat. The outermost cylinder but one is connected with
the covering cylinder by means of two pipe nozzles and a screw joint d. The
water is supplied through the pipe and flows simultaneously through the
cylinders B1, B2, B3 so that the water of the two innermost cylinders flows through
the pipe D into the cylinder B' from where it is conveyed through D' into the
outer cylinder B. The cylinders which do not contain water are here entirely
dispensed with.
Figure 11 is a section on the line a-b of Figure 10.
Figure 12 merely shows several cylinders inserted one in the other, and which
also only contain water, through which the gases flow. The gases are collected by
a chamber or a lid at the top.
1
Figure 1 shows a modification of Figure 1, in which the inner wall of the
container B is formed of corrugated sheet metal in order to obtain a larger heating
surface.
In Figure 1B the corrugated plate is replaced for the same purpose by a series
of pipes which are arranged somewhat close to the wall of the container B.
Figures 10 and 1° also show similar modifications, only that the apparatus is not
of a round but of a rectangular cross section. It may also be of any other suitable
form. These last named modifications may be employed with any other of the
figures shown as well as with Figure 1.
In Figure 6 another arrangement is shown, by which a longer course is insured
for the hot gases. This arrangement consists in the employment of one or more
spirals of sheet metal or wire or the like between each two walls of the water
container, or between the walls of the container and the cylinder c; this arrange-
ment may also be employed with any of the forms of construction shown up to
Figure 9.
Finally, the coupling nut or screw joint d, referred to in Figure 10, may, as is
shown, be equally well employed for connecting the tubes with each other in the
arrangements shown in the various other figures, by this means, when it is wanted
to take the stove to pieces, it is only necessary to undo these joints d.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. A stove for heating water, capable of being easily taken to pieces, and which
consists of two or more cylindrical or prismatic bodies inserted in one another,
narrow circular interstices being left between them through which the hot gases
pass.
2. A stove of the kind mentioned in Claim 1, and in which free combustion takes
place in the hollow space enclosed by the innermost cylinder without the flame
coming in contact with its crown.
3. A form of stove of the kind mentioned in Claim 1, in which the cylinders (or
prisms) are in part entirely used for the passage of the gases and in part also as
walls for the vessel containing the water.
4. A form of water containing vessel consisting of two cylinders (or, prisms)
inserted in one another and closed on the one side, and which cylinders or

page_text: prisms are placed in or over one or more cylinders containing water or conducting
gases.
5. The combination of several water- or gas-conducting cylinders (or prisms) by
their being fitted into one another in such a manner that the passage from one
cylinder into the other is effected by an overflow over the free edges or by means
of special conduit tubes.
6. Conducting the gases in a stove of the kind mentioned in Claim 1 in the
narrow circular interstices through spiral courses by means of conduits which are
fastened to one of the cylinders.
7. Making the walls of the water cylinders (or prisms) in a stove of the kind
mentioned in Claim 1, and which are surrounded by gases, out of corrugated
metal.
8. The arrangement of heating pipes by the walls of the water cylinders (prisms)
which are surrounded by the gases.
D
WM. P. THOMPSON & Co
Agents for the Applicant.