AN IMPROVED PORTABLE STOVE
Year: 1868

page_text: LETTERS PATENT to John Roberts, of No. 49, King William Street,
in the City of London, Merchant, for the Invention of "AN IMPROVED
PORTABLE STOVE."
Sealed the 9th March 1869, and dated the 11th September 1868.
PROVISIONAL SPECIFICATION left by the said John Roberts at the
Office of the Commissioners of Patents, with his Petition, on the
11th September 1868.
I, JOHN ROBERTS, of No. 49, King William Street, in the City of
London, Merchant, do hereby declare the nature of the said Invention
for "AN IMPROVED PORTABLE STOVE," to be as follows:-
The novelty of this Invention consists principally in forming the outer
part or case of the stove of two pieces of sheet metal of the same shape
but differing in size, the outer piece of metal being larger round than the
inner piece so as to leave space between the two pieces; the outer piece
is formed perforated and the inner piece solid, and the space between

page_text: these two pieces is filled with terra cotta or other similar suitable
substance or material; the top of the case is formed similarly; by these
means the terra cotta is protected from breakage. The case thus formed
is mounted on a hollow stand perforated all round for the admission of
atmospheric air to support combustion of the fuel in the stove; the part
that holds the fuel is of the same shape as the outer case (cylindrical by
preference), and the said fuel holder which is about one-half the height
of the case fits into an annular groove formed in the top of the stand and
has holes at the bottom thereof, also a loose perforated cap and openings
for the escape of smoke and gases from the fuel by a fluc or pipe
fixed to the stove; the fuel holder is three parts filled with fuel, and
when lighted the case is placed over the fuel holder and the stove
requires no further attention until all the fuel is consumed which will
be from 12 to 30 hours.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Roberts in the Great Seal Patent Office on
the 11th March 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ROBERTS, of 49, King William Street, in the City of London, Merchant,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of September, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Roberts, Her special licence that I,
the said John Roberts, my executors, administrators, and assigns, or
such others as I, the said John 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, usc, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "AN IMPROVED PORTABLE STOVE," upon thic
condition (amongst others) that I, the said John Roberts, my executors
or administrators, by an instrument in writing under my, or their, or one

page_text: 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 John Roberts, do hereby declare
the nature of the 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 consists in forming the outer part or case of a portable
stove of two pieces of sheet metal of the same shape but differing in
size, the outer piece of metal being larger round than the inner piece so
as to leave space between the two pieces; the outer piece is formed
perforated and the inner piece solid, and the space between these two
picces is filled with loose or granulated terra cotta or other similar
suitable substance or material. The case thus formed is mounted on a
hollow stand perforated all round or formed with slides for the admission
of atmospheric air to support combustion of the fuel in the stove; the
part that holds the fuel is of the same shape as the outer case (cylindrical
by preference), and the said fuel holder which is about one-half the
height of the case rests on the top of the stand, and the said fuel holder
is fitted with a perforated bottom; the smoke and gases from the fuel
pass off by a flue or pipe fixed to the stove. The fuel holder I propose to
fill about three parts full with fuel, and when lighted the case is placed
over the fuel holder and the stove requires no further attention until the
fuel is consumed, which will be from 12 to 30 hours.
And in order to explain this Invention more completely I will proceed
to describe its construction, reference being had to the illustrative
Drawing accompanying theso Presents and to the numeral figures and
letters of reference marked thereon, as follows:-
DESCRIPTION OF THE DRAWING.
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 transverse and vertical section of the stove through the

page_text: Supposing the several parts of the stove to be in the position repre-
sented by the Drawing, in order to light it the case A, B, must first be
lifted off; fuel is then placed in the fuel holder and the fuel lighted at
the top; the case A, B, is then replaced and the pipe C inserted in an 3
open fire-place, or another pipe may be connected to the pipe C leading
into the open air. By thus constructing a portable stove slow com-
bustion goes on and may be maintained for many hours without further
attention or replenishing of the fuel holder.
Having now fully described and set forth the nature and object of 3
my said Invention for "An Improved Portable Stove," together with the
best means I am acquainted with for carrying the same into practical

page_text: effect, I would remark in conclusion that I hereby declare my Invention
to consist in constructing a portable stove in the manner above described
with reference to the accompanying Drawing.
In witness whereof, I, the said John Roberts, have hereunto set
my hand and scal, this Tenth day of March, in the year of our
Lord One thousand eight hundred and sixty-ninc.
Witness,
A. BROWNE,
Patent Agent,
49, King William Street,
London Bridge.
JOHN ROBERTS. (L.S.)