Year: 1886

page_text: Date of Application, 1st July, 1886.
Complete Left, 1st Apr., 1887.
Complete Accepted, 20th May, 1887.
I, HERMANN HEIM, of Ober-Doebling, near Vienna, in the Empire of Austria, stove
manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to fire places or stoves, and comprises the improvements
hereinafter described.
According to this invention, the grate is surrounded with annular conduits,
communicating with the space outside the fire-box by means of ducts, the mouths of
which are controlled by dampers. The inner sides of said annular conduits aro
provided with perforations, turned toward the grate, and allow jets of heated air to be
sucked by the draught into the flames or under the grate. Conduits of this kind may
be arranged either above and below the grate, or above the same only; and instead of
making them annular, they may be made to run along the back border of the grate
and one or both side borders only.
In order to afford free access to the portion of the fire-box immediately above tho
grate, as this portion ought to be lined with refractory material, the lowermost of the
short tubular pieces of which the fire-box is composed, are considerably widened
toward their front side, and when the fire-box is, as usual, provided with a fuel
magazine, from the inclined bottom of which the fuel is automatically fed to the grate,
said inclined bottom is made removable; with this arrangement, the refractory lining
can easily be applied after the door of the ash-pit and said bottom plate have been
removed.
The said fuel magazine preferably has the form of an inclined tube of rectangular
section, and a portion of the same, immediately behind its side facing the fire-box,
may be separated from the remaining space by means of a longitudinal partition; the
channel thus formed is not filled with fuel and has a sheet of specular gypsum inserted
into its sliding door in order to render the fire visible.
Large surface is given to the parts heated by the products of combustion by
providing the cover of the fire-box with a certain number of couplings for the fastening
of smoke pipes, which are freely suspended to said couplings. The lower ends of
these smoke pipes communicate with a common collecting-pipe, likewise freely
D

page_text: suspended from them, surrounding the fire-box and connected to the chimney. By the
free suspension of the smoke pipes, the same are allowed to dilate and contract without
exerting or undergoing any strain. Beside these smoke-pipes, there is a direct
communication between the fire-box and the chimney, designed to initiate the draught
when the fire is kindled, and adapted to be cut off by means of a throttle-valve or the
like.
The infiltration of condensed water into the joints between the smoke-pipes is
prevented, by forming on the lower ends of all pipes to be connected with one another,
a number of rebate-shaped shoulders, to which similar shoulders formed within the
upper ends of the pipes, answer in such a manner that the lowermost step of
each upper pipe projects beyond the lowermost shoulder at the inside of each lower
pipe.
For the purpose of keeping the refractory lining securely in place, the portion of
the fire-box to he lined is provided with dovetail ribs.
The hot air chamber of caloriferes has its bottom flap-valve, through which cold air
is admitted, so connected to the top flap-valve, through which the heated air passes to
the room to be heated, as to cause both valves to close and to open simultaneously;
moreover, the top flap-valve is adapted, when it is entirely open, to close a conduit
through which cold air is conveyed to the room to be heated, and thus the supply of
cold air is diminished as soon as the supply of hot air is increased, and vice versa.
Dated this 1st day of July 1886.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: I, HERMANN HEIM of Ober-Doebling, near Vienna, in the Empire of Austria, Stove
Manufacturer, 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 fire-places or stoves and comprises the improvements
hereinafter described.
According to this invention, passages or tubes are formed within the walls of the
fire-box, said passages or tubes being arranged either above the grate only, or above
and beneath the samo, and either surrounding the grate in annular form or extending
along one or both side edges and the back edge of the grate only. These
passages or tubes communicate with the outer air by means of ducts which are
provided with dampers and they have a certain number of outlets formed in their
sides facing the grate. Moreover, in fire-boxes provided with an automatically feeding
fuel magazine or hopper, the lowermost one of the short tubular pieces composing the
fire-pot or fire box, and more especially those of said pieces or sections which form the
draught regulator neck and contain the ash pit, are considerably widened toward
the front side, so as to admit-after removal of the front wall, of said widened pieces
and of the inclined bottom of the. hopper-of a refractory lining being made or
renewed in the fire-box.
In order to afford a more durable connection between said refractory lining and the
inner surface of the fire-pot sides, the latter may be provided with projecting dove-tail
ribs. Finally, the radiating surface of the heating apparatus is greatly increased by
the arrangement, at the top of the fire-pot, of a certain number of couplings for smoke
pipes instead of one coupling as usual, a downward extending smoke pipe being freely
suspended to each of these couplings, and to the bottom ends of all these smoke pipes
being likewise freely suspended, without any additional support, a collecting pipe
which communicates with the chimney. It is only with such a perfectly free
suspension of the smoke pipes, that these pipes are allowed to dilate and contract under
the action of changes of temperature without exerting or suffering any prejudicious
strain.
The accompanying drawings show heating apparatus embodying this invention,
adapted as the source of caloric of a calorifere or air-stove.
In these drawings,
Figure 1 is a vertical section of the apparatus in a plane cutting the fuel
magazine.
Figure 2 is a sectional elevation on a plane perpendicular to that of Figure 1.
Figure 3 is a sectional front elevation of the fuel magazine and the grate.
Figure 4 is a top side view of the fire-pot and the smoke pipes suspended thereon.
Figure 5 is in its upper half a horizontal section of the top portion of the heating
apparatus, and in its lower half a horizontal section of the bottom portion of the
same.
Figures 6 and 7 shew vertical sections of the walls of the
hot air passages are formed.
Figures 8 and 9 are horizontal sections of the said passages.
fire-box wherein the

page_text: Figure 10 represents a sectional elevation and a top side view of the particularly
shaped joints between the smoke-pipes, devised to prevent condensed water from
penetrating into the luting.
The lowermost casting or section a of the fire-pot, forming the ash pit and the
draught regulator neck, as well as the next casting above and c extend sufficiently
forward to admit, after the removal of the ash pit door and the loosely inserted bottom c²
of the fuel magazine, of the necessary refractory linings c being easily made in the
third section c.
The section of the fire pot, interposed between the section a and c, and carrying
the grate, has passages 1, 2 formed within its sides said passages forming complete
annular spaces round. the grate, and communicating with the outer air by means of
ducts 3 and 4, respectively; the outer mouths of said ducts are provided with turn-
valves or other adjustable closing devices. The upper passage 1 of these two
passages 61 and 62 has apertures & formed in its back portion, said apertures allowing
jets of heated air to be directed toward the fire. The under annular passage has a
hole cut in that part of its bottom side which lies next the partition separating the
duct from one of the two branches of the annular passage on either side of its end;
through which hole, heated air is allowed to stream under the grate (see Figure 9).
If desired, several holes may be formed in the lower channel b². As already stated,
the channel lying beneath the grate may, in certain cases, be dispensed with, and,
instead of passages surrounding the grate by all its sides, passages may be formed,
which extend along both or either lateral sides and the back side only.
The casting or section c, comprising the inclined fuel magazine c, the bottom c² of
which is made removable, is provided on its surface with projecting dove-tail ribs c³ as
clearly shown in the lower half of Figure 5; by these ribs the refractory lining e' is
securely held in place. In order to keep these ribs cool, they are preferably made
hollow viz. corresponding with flutes of the outer surface of section c.
The top
portion of the fuel magazine c¹ is separated from the under or main portion by means
of a partition c, and thus forms a special flat channel, which is closed by means of a
slide door having a sheet of specular gypsum inserted into its middle aperture; through
this channel, not filled with fuel, the fire can be observed. Above the inner mouth-of
said channel a projecting tongue e is cast on the inner surface of the section c of the
fire-pot, to form a support of the refractory lining ct and to protect the edge beneathr
said lining against being burnt.
The cover e of the fire-pot, between which and the section several sections d of
identical shape are interposed, is provided with a certain number of couplings el, to be
connected with the pipes for the eduction of the products of combustion in the
drawings, six couplings e', are shown. From each coupling el, a smoke-pipe e² is freely
suspended by means of flanges bolted together, and to the lower ends of all the pipes
is suspended in an analogous manner a U-shaped collecting pipe e³, which surrounds
the fire-pot on three sides, and has its suitable shut ends projecting through the front
wall of the hot air chamber of the calorifere. From the collecting pipe e, an outlet
pipe e extends upward, to unite with a horizontal pipe e communicating with the
chimney. In order that it may be possible to allow the products of combustion to
directly rise into the chimney, as may prove necessary for initiating the draught on
the fire being kindled, the fire-pot cover e is provided with a further outlet coupling e
extending outward through the front wall of the hot air-chamber, and being connected
to the pipe e by means of a knee pipe e containing a throttle-valve.
As clearly shown in the drawings, the sections of the fire-pot and the pipes e³, es,
have fluted sides, whereby the radiating surface is notably increased. Furthermore, it
will be observed, referring to the pipes e e, that they are connected to the couplings e¹
of the cover e and to the couplings of the collecting pipe e in a novel particular
manner, purposed to prevent condensed water from penetrating into the lutings. It is
shown in Figure 10 that the lower end of the upper pipe is made tapering by rebate-
shaped steps, and that in the top end of the under pipe a corresponding seat is formed
for the said tapering end in such a manner that the lowermost step of the upper pipe
freely projects beyond the seat in the under pipe.

page_text: In the floor of the hot air chamber f there is a trap valve f¹ controlling the ingress
of cold air which arrives through the duct g, and in the uppermost portion of the back
wall of said hot air chamber there is another trap-valve 2 giving passage to the heated
air into a duct g running to the rooms to be heated. The duct g communicates with
the cold air duct g and contains a second seat for the clack-valve 2, which closes the
duct g when it is tilted. The traps 1 and 2 boing connected to each other by means
of a chain passing over pulleys in such a manner as to open and close at once, and the
trap, when it is wholly opened, closing the cold air duct to the room to be heated it
is clear that these two traps form an efficacious device for regulating the temperature;
when both traps are partly closed, the production of heated air and its supply to tho
room to be heated diminish at once, while the supply of cold air is increased, and
when both traps are opened, an inverse action takes place. It is obvious that the chain
passing over rollers may be replaced by a lever and link mechanism.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
First. In heating apparatus, a passage formed above the grate in the sides of the
fire-pot, or two passages above and beneath the grate, said passage or passages
extending along one or more borders of the grate, communicating with the outer air
by valve controlled ducts, and being provided with apertures which face the grate and
allow jets of heated air to pour into the flame or under the grate.
Second. In heating apparatus, the combination with lower fire-pot sections which are
widened toward their front side, of an inclined fuel magazine bottom made of a loosely
inserted plate, for the purpose of affording, by the removal of said plate and the ash
pit door, a free access to the portion of the fire-pot next the grate, this portion being to
be lined with refractory clay.
Third. In heating apparatus, for the purpose of increasing the heated surfaces, the
combination with the fire-pot of a certain number of outlet couplings formed at the
fire-pot cover, and having each a smoke pipe freely suspended to it, and of a collecting
pipe, likewise freely suspended to the ends of all the hanging smoke pipes and
communicating with the chimney.
Fourth. In heating apparatus having their heated surfaces increased by downward
extending smoke pipes, a pipe directly connecting the fire-pot with the chimney and
containing a throttle valve, said pipe serving for utilizing the draught.
Fifth. In heating apparatus, for the purpose of preventing condensed water from
penetrating into the lutings of vertical smoke pipes, lower smoke pipe ends which taper
by steps and to which answer correspondingly shaped seats within the upper smoke
pipe ends in such a manner that the undermost step of the tapering pipe ends projects
beyond the undermost step of the seat.
Sixth. In heating apparatus an inner fire-pot surface having projecting dove-tail
ribs in the portion to be lined with refractory clay, for the purpose of better keeping
this clay in place.
Seventh. In a calorifere hot air chamber, an under cold air trap-valve so connected
to the upper hot air trap-valve as to cause both valves to simultaneously close and
open, and a cold air duct to the chamber to be heated, said duct being throttled or
closed by the open hot air trap.
Eighth. In heating apparatus, a peep hole formed by a loose partition of the fuel
magazine and by a slide door closing the flat passage thus separated and having a sheet
of specular gypsum inserted into its middle aperture.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.