IMPROVEMENTS IN THE CONSTRUCTION OF CLOSED STOVES
Year: 1871

page_text: LETTERS PATENT to Thomas Roberts, of Bromley, in the County of
Kent, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
CLOSED STOVES."
Sealed the 18th May 1872, and dated the 21st November 1871.
PROVISIONAL SPECIFICATION left by the said Thomas Roberts at the
Office of the Commissioners of Patents, with his Petition, on the
21st November 1871.
I, THOMAS ROBERTS, of Bromley, in the County of Kent, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE CON-
STRUCTION OF CLOSED STOVES," to be as follows:-
This Invention relates to certain improvements upon a former Patent
granted to John Roberts, and bearing date the 11th day of September
1868, numbered 2806, for an improved portable stove, and the
improvements which form the subject of this present Invention
consist,-
First. In combining solid terra cotta or other plastic material with

page_text: described in the Specification of the aforesaid former Patent of the
11th day of September 1868.
And, secondly, in employing asbestos in lieu of sand for sealing or
making the joint of the loose lid or cover of such said stoves when loose
lids are required to be employed.
The following is an example of the manner of constructing stoves
according to this present Invention : — -I form two concentric (by
preference) shaped casings of sheet iron, as described in the Specification
of the aforesaid former Patent, the inner casing being made of solid
metal and the outer casing being perforated, but instead of simply
perforating the said outer casing with small holes, as described and
-represented by the Drawing accompanying the Specification of the
aforesaid former Patent, I propose by this Invention to make larger
openings, of an ornamental shape, pattern, or device, in the said outer
casing, and fit a piece of solid terra cotta or other suitable plastic
material between the two casings, and between the top edges of the two
aforesaid casings I make a groove or channel and place therein asbestos.
The lid of the stove I also form of sheet iron, with solid terra cotta
underneath, and make ornamental shaped openings in the metal for the
better radiation of heat. The edge of the lid is a band of sheet iron
fixed thereto, and the lower edge of this band is intended to be embedded
in the asbestos contained in the groove, that is, between the top of the
two casings of the stove, as before described. And in this manner and
by these means I am enabled to make a clean and efficient smoke-tight
loose joint. The fuel holder and stand of the stove may be similar to
those before described in the Specification of the aforesaid former
Patent.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Roberts in the Great Seal Patent Office
on the 21st May 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
ROBERTS, of Bromley, in the County of Kent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of November, in the
year of our Lord One thousand eight hundred and seventy-one, in the

page_text: 66
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thomas Roberts, Her special licence
that I, the said Thomas Roberts, my executors, administrators, and
assigns, or such others as I, the said Thomas Roberts, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for 'IMPROVEMENTS IN
THE CONSTRUCTION OF CLOSED STOVES," upon the condition (amongst others)
that I, the said Thomas Roberts, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Thomas Roberts, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, that is to say :-
This Invention relates to certain improvements upon a former Patent
granted to John Roberts, and bearing date the 11th day of September
1868, numbered 2806, for "An Improved Portable Stove," and the
improvements which form the subject of this present Invention
consist,-
First. In combining solid terra cotta or other plastic material with
iron, instead of using granulated or powdered terra cotta, as before
described in the Specification of the aforesaid former Patent of the 11th
day of September 1868.
And, secondly, in employing asbestos in lieu of sand for sealing or
making the joint of the loose lid or cover of such stoves when loose
lids are required to be employed.
-
The following is an example of the manner of constructing stoves
according to this present Invention: I form two concentric (by
preference) shaped casings of sheet iron, as described in the Specification
of the aforesaid former Patent, the inner casing being made of solid

page_text: Figure 1 represents an outside elevation of a portable stove constructed
according to this Invention and as it would appear when ready for use;
Figure 2 is a section of Figure 1. At each of the above Figures I employ
similar letters of reference to denote corresponding parts.
A, B, mark two cases of sheet iron or other suitable metal. The case
A. I form cylindrical or with openings of an ornamental shape, pattern,
or device a therein; and the case B I also form cylindrical, but solid.
These cases are connected together by their bottom edges. The space b
between the two cases I fill with blocks or tubes of terra cotta or other
suitable plastic material, and between the top edges of the two aforesaid
cases I make a groove or channel c, and place therein asbestos or other
suitable substance. The lid C I form of sheet iron, with solid terra cotta
or other suitable plastic material in between, and also make ornamental
openings at the top, as in the aforesaid case A; I also form a moulding

page_text: c¹ around the said lid. The edge d of the lid C is embedded in the
asbestos or other suitable material in the aforesaid channel c to form a
smoke-tight loose joint. The bottom of the case B is left open. D is a
short pipe or flue fixed to the case B and passing through a hole in the
case A; E is the fuel holder and F the stand, which are similar to those
described in the aforesaid former Patent, dated 11th day of September
1868 and numbered 2806.
Having now fully described and set forth the nature and object of
my said Invention for "Improvements in the Construction of Closed
Stoves," and the means by which it may be carried into practical effect,
I would remark in conclusion that I hereby declare my Invention to
consist in, and I claim, constructing closed stoves in the manner above
described with reference to the accompanying Sheet of Drawings.
In witness whereof, I, the said Thomas Roberts, have hereunto set
my hand and seal, this Eighteenth day of May, in the year
of our Lord One thousand eight hundred and seventy-two.