Year: 1886

page_text: Date of Application, 9th Sept., 1886.
Complete Left, 9th June, 1887.
Complete Accepted, 19th July, 1887.
444T
We THEODORE DERICHS, FRANZ WEBER and EDOUARD BENDER of Brussels
Manufacturers do hereby declare the nature of our said Invention to be as follows :-
This Invention relates to the construction of stoves or fireplaces and has for its
object effecting a powerful circulation and heating of air.
According to this Invention a number of air tubes or passages is arranged around
or upon the combustion chamber or two independent groups of tubes or passages are
arranged around and upon the said chamber. Air from the room or apartment or
from the exterior of the building is caused to enter these tubes at the lower part
thereof and the heated air escapes at the upper part either into the room or apartment
in which the stove or fireplace is situated or may be conducted to any other
desired place.
According to a modification of the invention vertical tubes suitably arranged or
grouped around the combustion chamber being open at their lower extremities
communicate at their upper extremities with a space in a sort of hollow frame arranged
at the top of the combustion chamber and provided on its outer sides with
outlet openings.
The said tubes or passages are enclosed by two concentric casings arranged one
within the other being provided at the upper and lower part with openings and forming
a large annular air passage which the air enters in the first place. More than two of
these casings may be employed so as to form a corresponding number of annular
external air passages.
According to another modification of this Invention the inner of the said casings
is carried up above the aforesaid frame like chamber so that the space thereby
enclosed forms an extension of the combustion chamber communicating with the
flue or chimney.
In this space is enclosed a second system or combination of air circulating and
heating pipes.
This combination of pipes consists of a suitable number of lower

page_text: horizontal pipes and vertical pipes connected therewith. The former are open at both
ends and communicate with the atmosphere of the apartment, the latter are open at
the upper end only allowing the heated air to escape therefrom or are connected with
a pipe or conduit which conducts the air to the place where it is required.
In order to moisten the air, the outer casing may be enlarged at the base of the
stove a vessel containing water being placed in the space thus formed.
The openings at the lower part of the passage formed by the casing may be connected
with a conduit or conduits supplying air from the exterior of the building. In like
manner the horizontal pipes of the upper set of pipes may be connected with a special
air supply arrangement.
The passages grouped around the combustion chamber may be formed by means of
ribs ridges or flanges projecting from the one part of the casing of the fire box and
coming in contact with the surface of the other part and special heating tubes may be
placed in the passages thus formed.
1
01 1
1
1000
J. HENRY JOHNSON,
Agent for Theodore Derichs,
Franz Weber, and Edouard Bender.

page_text: Improvements in Stoves or Fireplaces for Heating and
Circulating Air.
We THEODORE DERICHS FRANZ WEBER and EDOUARD BENDER of Brussels (31
Rue Pierre van Humbeck Motenbeck) Manufacturers, 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 the construction of Stoves or fireplaces and has for its
object effecting a powerful circulation and heating of air as hereinafter described.
According to this Invention a number of air tubes or passages is arranged around
or above the combustion chamber or two independent groups of tubes or passages are
arranged around and above the said Chamber. Air from the room or apartment or
from the exterior of the building is caused to enter these tubes at the lower part
thereof and the heated air escapes at the upper part either into the room or apartment
in which the stove or fire place is situated or it may be conducted to any other desired
place. The air tubes grouped around the combustion chamber and being open at their
lower extremities may communicate at their upper extremities with a space in a
hollow frame arranged at the top of the combustion chamber and provided on its outer
sides with outlet openings. The said tubes or passages are enclosed or surrounded
by two or more concentric casings arranged one within the other being provided with
suitable openings for the admission and escape of air.
According to a modification of this arrangement the inner casing is carried up above
the aforesaid frame like chamber so that the space thereby enclosed forms an upper
chamber or extension of the combustion chamber communicating with the flue or
chimney and enclosing a second system or combination of air circulating and heating
pipes as hereinafter described.
And in order that our said Invention may be fully understood we shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheet of drawings the same letters of reference indicating
corresponding parts in all the figures.
Figure 1 of the accompanying drawings represents a vertical section of a stove
constructed according to this Invention and Figure 2 is a similar section taken at
right angles to the section in Figure I.
Figure 3 is a plan of the apparatus and Figures 4 and 5 are horizontal sections on
the lines a b, figure 2 and c. d figure 1 respectively.
A is the combustion chamber around which are arranged a number of air tubes or
passages L communicating at their upper extremities with a hollow cast iron frame K
of rectangular form in transverse section for example which is closed internally but is
partly open at the outer sides so that the heated air ascending through the tubes or
passages L is permitted to escape into the apartment but cannot enter the upper
system of air pipes or passages when such is employed as in the example illustrated.
These tubes L are enclosed in two sheet metal casings J and B provided at the lower
part with air inlet openings S and at the upper part with air outlet openings S¹.
These casings form between them wide air passages. By employing a greater number
of such concentric casings additional air passages may be provided if desired.
The inner casing B in the arrangement illustrated is continued upwards above or

page_text: beyond the hollow frame K and forms an upper chamber or extension of the com-
bustion chamber in which is arranged a second series of air tubes consisting for examplo
of four horizontal tubes or passages 1 open at both ends for the admission of fresh or
outer air and communicating with vertical tubes D D*. The tubes D pass through the
cover of the chamber formed by the aforesaid extension of the casing B and are open
at their upper extremities but the tubes D× communicate at their upper extremities
with horizontal tubes E which deliver the air directly or otherwise into the apartment
or other place that is to be warmed. All these vertical tubes may however be carried
through the top of the casing in the same way as the tubes D or they may all
communicate with horizontal tubes such as E.
The stove illustrated in the drawing is constructed for burning coal but the
construction will readily admit of the use of any other suitable fuel such as wood, peat,
gas, or petroleum for example. When a moist warm air is required a trough or vessel H
containing water is provided at the lower part of the stove in an enlargement of the
air chamber formed between the casings J and B and in case it be desired to provide
a supply of fresh air in place of using the always more or less impure air of the room
in which the apparatus is placed there is every facility for closing the air inlet
openings S in the base of the stove and introducing a supply of fresh air by means of
suitable tubes or conduits without any other alteration in the construction and
arrangement of the apparatus. In like manner fresh air may be supplied to the
tubes D Dx.
The products of combustion or heated gases generated in the combustion chamber A
first heat the air in the lower group of tubes and then circulate about the upper series
of tubes when these are employed, after which they escape into the chimney or flue
through a suitable opening, not shewn in the drawing, in the upper part of the
casing B.
With reference to the passages grouped around the combustion chamber A, it is to
be observed that the said passages can be formed as shewn on the right hand side of
Figure 5 by means of ribs or plates projecting from the sides of the fire box which
may be left open or be closed in with plates forming passages of rectangular form in
section as indicated at L' Figure 5 within which other heating tubes may be arranged
if desired.
Having now particularly described and ascertained the nature of our Invention and
in what manner the same is to be performed we declare that what we claim is :—
First In a stove or fire place for heating and circulating air the combination with
a combustion chamber A, of a number of air heating tubes or channels surrounding
the said chamber and arranged within a double casing forming an air chamber or
chambers with or without a receptacle for water at the lower part of the said air
chamber or chambers substantially as hereinbefore described and illustrated in the
accompanying drawings.
Second: In combination with a stove or fire place for heating and circulating air
arranged as herein before described and claimed, a casing or chamber forming an
upward extension of the combustion chamber and enclosing an additional system of
air heating pipes or tubes in which air is heated and from which the air is discharged
into the apartment or other place to be heated or warmed substantially as hereinbefore
described and illustrated in the accompanying drawing.
Dated this 8th day of June 1887
J. HENRY JOHNSON,
Agent.