IMPROVEMENTS IN DOMESTIC HEATING APPARATUS
Year: 1883

page_text: LETTERS PATENT to Benjamin Joseph Barnard Mills of the firm of Harris and
Mills of 23 Southampton Buildings in the County of Middlesex Patent Agent
for an Invention of IMPROVEMENTS IN DOMESTIC HEATING APPARATUS
communicated to him from abroad by Monsieur Veaux-Ducruix of Beaujeu in
the department of the Rhône in the Republic of France
PROVISIONAL SPECIFICATION left by the said Benjamin Joseph Barnard
Mills at the Office of the Commissioners of Patents on the 11th September
1883.
BENJAMIN JOSEPH BARNARD MILLS of the firm of Harris and Mills of
23 Southampton Buildings in the County of Middlesex, Patent Agent IMPROVE-
MENTS IN DOMESTIC HEATING APPARATUS A communication to me from abroad
by Monsieur Veaux-Ducruix of Beaujeu, in the department of the Rhône in the
Republic of France
This improvement has for its object to give to ordinary domestic heating
apparatus, fixed or moveable chimneys stoves and such like apparatus, all the
advantages of a hot air stove or calorifere without changing in any respect their
appearance, and without involving any new difficulty in the maintenance or
cleansing of the same.
This object is attained, by surrounding the ordinary stove, whatever may be its
form, with a second envelope or case of similar form, and leaving between the
sides, a space divided into horizontal channels by ribs belonging either to the stove
or to the outer envelope or case.
These channels are traversed successively from top to bottom by the air that it
is desired to heat.
The essential character of the apparatus is therefore, its being composed of only
two parts euclosed the one within the other, and forming between them by means
of ribs with which they are furnished, a series of horizontal or slightly inclined
channels, forcing the air to remain as long as possible in contact with the circum-
ference of the stove.

page_text: This new stove can be placed wherever there exists an ordinary stove of similar
form, inasmuch as it differs therefrom only by a slightly increased thickness given
to its double sides; the smoke conduits remain in their position, it is only necessary
to bring the external air by any suitable means to the lower part of the double case,
and to provide outlets at its upper part in order that the air may be diffused in the
room or locality after having been conveniently heated.
If desired there may be added to these apparatuses a reservoir for water the
vapours of which will mix with the hot air; the latter in place of escaping directly
by the upper part of the apparatus may also be conducted to the desired places
either in the same room or into an adjoining room.

page_text: .
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Benjamin Joseph Barnard Mills in the Patent Office on the
11th March 1884.
BENJAMIN JOSEPH BARNARD MILLS of the firm of Harris and Mills of
23 Southampton Buildings in the County of Middlesex Patent Agent "IMPROVE-
MENTS IN DOMESTIC HEATING APPARATUS" A. Communication to me from abroad
by Monsieur Veaux-Ducruix of Beaujeu in the department of the Rhône in the
Republic of France
This improvement has for its object to give to ordinary domestic heating
apparatus, fixed or moveable chimneys stoves and such like apparatus, all the
advantages of a hot air stove or calorifere without changing in any respect their
appearance, and without involving any new difficulty in the maintenance or
cleansing of the same.
The object is attained, by surrounding the ordinary stove, whatever may be its
form, with a second envelope or case of similar form, and leaving between the sides
a space divided into horizontal channels by ribs belonging either to the stove or to
the outer envelope or case.
These channels are traversed successively by the air that it is desired to heat.
The essential character of the apparatus is therefore, its being composed of only
two parts enclosed the one within the other, and forming between them by means
of ribs with which they are furnished, a series of horizontal or slightly inclined
channels, causing the air to remain as long as possible in contact with the circum-
ference of the stove.
This new stove can be placed wherever there exists an ordinary stove of similar
form, inasmuch as it differs therefrom only by a slightly increased thickness given
to its double sides; the smoke conduits remain in their position, it is only necessary
to bring the external air by any suitable means to the lower part of the double
case, and to provide outlets at its upper part, in order that the air may be diffused
in the room or locality after having been conveniently heated.
And in order that the said Invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS
Figure 1 represents in transverse section the application of this improvement to
a chimney stove.
Figure
of the ribs.
TIL
is a perspective view of the exterior envelope showing the arrangement
A
L
a chimney stove.
Figure 2 is a perspective view of the exterior envelope showing the arrangement
of the ribs.
The stove A is of the ordinary form, and can be arranged with fire dogs or a grate,
the smoke escapes at a.
The envelope B Figure 2 completely covers the stove and is formed with an
opening a¹ corresponding to that marked a, for the passage of the smoke; the external
air conducted by the channel centers into the double envelope by the lower
opening b, follows to the right and the left the rib c, and returns behind the stove;
it then encounters a superposition of channels formed by the ribs d, e, f.
These channels communicating, some in front the others behind the stove compel
the air to circulate in the direction of the arrows, until it encounters the outlet
openings g, g, which conduct it to the warming openings placed upon the sides of
the chimney.

page_text: 1
If the chimney did not back on to an external wall, the channel c would run
along the wall to the angle of the part corresponding to an exterior wall.
For moveable chimneys of German stoves as shown at Figure 3 in which the
smoke is discharged by a tube a, the inlet of air b, will be placed upon the back of
the stove, and the conducting channel will rise so as to continue by a second tube c
following parallel to the smoke tube a, to its entry to the chimney.
The tube c, can then traverse the chimney to pass away to the exterior, if the
wall is free, or to follow this wall to the angle of the part which will permit it to
pass to the exterior.
The two tubes a and c in their common course can be juxtaposed, or placed one
inside the other.
1 11
If the moveable chimney were itself backing against a length of chimney, the
arrangement previously described for fixed chimneys could be employed.
In the case of a stove such as that shown at Figure 4 the envelope B, whatever
may be its form, will be concentric to the stove and the ribs will divide the space
for the circulation of air into annular spaces communicating sometimes on the one
side sometimes on the other; the arrangement of the air conducting tube will be
the same as that above described for the chimney of a German stove.
--
It is optional to add to these apparatuses a reservoir for water, the vapours from
which will mix with the hot air; this latter in place of escaping directly by the
top of the apparatus, can also be conducted to the places required, either in the
same building, or in a neighbouring building.
Having thus described the nature of the said Invention and the mode in which
the same is carried into effect I would have it understood that what I claim is-
The transformation into calorifere, of an ordinary stove of whatever form, by
covering it with an envelope of similar form, leaving between the two parts a
narrow space divided by ribs belonging to one of the parts into a series of
horizontal channels traversed successively from bottom to top by air drawn from
the exterior.
In witness whereof I the said Benjamin Joseph Barnard Mills have hereunto
set my hand and seal this eighth day of March in the year of our Lord One thousand
eight hundred and eighty four.