Im- PROVEMENTS IN GAS STOVES FOR HEATING AND WARMING ROOMS, AND FOR OTHER LIKE PURPOSES.
Year: 1870

page_text: LETTERS PATENT to John Stalvies, of Bromsgrove, in the County of
Worcester, Locomotive Superintendent, for the Invention of "Im-
PROVEMENTS IN GAS STOVES FOR HEATING AND WARMING ROOMS, AND FOR
OTHER LIKE PURPOSES.".
Sealed the 20th January 1871, and dated the 17th October 1870.
PROVISIONAL SPECIFICATION left by the said John Stalvies at the
Office of the Commissioners of Patents, with his Petition, on the
17th October 1870.
I, JOHN STALVIES, of Bromsgrove, in the County of Worcester,
Locomotive Superintendent, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN GAS STOVES FOR HEATING AND WARMING
ROOMS AND FOR OTHER LIKE PURPOSES," to be as follows :—
My Invention consists of the improvements herein-after described in
constructing and arranging the parts of gas stoves for heating and
warming rooms, and for other like purposes, such as drying and
evaporating.
In constructing a stove according to my Invention I employ a burner
in which a mixture of gas and air is burned, the gas being supplied by
means of a supply gas pipe and the air being introduced into the
vertical tube of the said burner by means of a series of holes made in

page_text: the lower part of the said tube. By means of a cap or larger tube, also
perforated with holes and fitted upon the lower part of the burner tube,
the holes for the supply of air can be more or less closed, and the
proportion of air relative to that of the gas may be regulated at pleasure.
The said burner tube is supported vertically on a foot and carries at top
a hollow disk or chamber having a series of small holes in its periphery
through which the mixture of gas and air passes and at which it is
ignited and burns. On the said disk or chamber is supported an
accumulator or heater, upon which the annular flame of the burner
plays. This accumulator or heater may be made of cast iron or other
metal or material or combination of materials not injuriously affected by
heat. The burner and accumulator or heater are covered by an outer
casing which has perforations near its top to allow of the escape of the
heated air. It is also furnished with suitable openings for lighting
the gas and permitting of the passage of the gas supply pipe, which
latter is furnished with a stop-cock.:
.
By constructing and arranging the parts of gas stoves in the manner
described the room or place in which the stove is used is heated écono-
mically and efficiently, no smoke is evolved, and by the action of the
heater or accumulator the air is prevented from becoming heated to such
a degree as to produce the unpleasant odour commonly attending the use
of stoves.
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Stalvies in the Great Seal Patent Office on
the 3rd April 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
STALVIES, of Bromsgrove, in the County of Worcester, Locomotive
Superintendent, send greeting.
!
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of October, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Stalvies, Her special licence
that I, the said John Stalvies, my executors, administrators, and
assigns, or such others as I, the said John Stalvies, my executors,

page_text: 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
GAS STOVES FOR HEATING AND WARMING ROOMS AND FOR OTHER LIKE PURPOSES,"
upon the condition (amongst others) that I, the said John Stalvies, 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 John Stalvies, 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 thereof, that is to say:
:
My Invention consists of the improvements: herein-after described
in constructing and arranging the parts of gas stoves for heating and
warming rooms, and for other like purposes, such as drying and
evaporating.
In constructing a stove according to my Invention I employ a burner
in which a mixture of gas and air is burned, the gas being supplied by
means of a supply gas pipe and the air being introduced into the vertical
tube of the burner by means of a series of holes made in the lower part.
of the said tube. By means of a cap or larger tube also perforated with
holes and fitted upon the lower part of the burner tube the holes for the
supply of air can be more or less closed and the proportion of air relative
to that of the gas may be regulated at pleasure. The said burner tube
is supported vertically on a foot and carries at top a hollow disk. or
chamber having a series of small holes in its periphery through which.
the mixture of gas and air passes and at which it is ignited and burns..
On the said disk or chamber is supported an accumulator or heater upon
which the annular flame of the burner plays. This accumulator or
heater may be made of cast iron or other metal or material or com-.
bination of materials not injuriously affected by heat. The burner, and
accumulator or heater are covered by an outer casing which has per-
forations near its top to allow of the escape of the heated air. It is also
+

page_text: furnished with suitable openings for lighting the gas and permitting of the
passage of the gas supply pipe, which latter is furnished with a stop-cock.
.
Having explained the nature of my Invention I will proceed to
describe with reference to the accompanying Drawing, the manner in
which the same is to be performed.
Figure 1 represents in elevation. and Figure 2 in vertical section a
gas stove constructed and arranged according to my Invention; Figure 3
represents an elevation of the same with the outer cover removed. The
same letters of reference indicate the same parts in the several Figures.
of the Drawing.
a is the burner of the stove in which a mixture of gas and air is
burned. The said burner a consists of a hollow disk or circular chamber
having a series of small holes in its periphery. The mixture of gas and
air is conveyed to the burner a by the vertical pipe b, the said pipe b
being supported upon the screwed rod or peg c fixed to or cast with the
foot d of the stove. Gas is conveyed to the vertical burner tube 6 by
the gas supply pipe e and jet f, the said gas pipe e being furnished
with a stop-cock. Air passes into the vertical burner tube 6 by holes.
at g immediately above the gas jet f. A. cap or larger tube perforated
with holes may be fitted to slide upon the burner tube b. By sliding
this cap it may be made to cover or partially cover the holes 9 in the
burner tube b and thereby regulate the quantity of air supplied to the
burner. The said cap however need not be used. The mixture of gas
and air rising up the vertical burner tube 6 passes into the hollow
burner a, and escapes through the small holes in its periphery at which
it is ignited and burns without smoke. On the top of the burner a an
accumulator or heater his supported, upon the under side of which
accumulator or heater the flames of the burner a play. The accumulator
or heater h is retained in its place on the burner by the peg and hole
at i. The gas burner a and accumulator or heater h are covered by the
outer metallic casing k, closed at top, the lower edge of the said casing
resting on the foot d, in the manner best seen in the section, Figure 2.
The heated air from the stove escapes by the perforations at 7, near the
top of the casing, and air is supplied to the interior of the casing by the
perforations m, m. The gas is lighted by the hole n. An opening p at
the bottom of the casing permits of the passage of the gas supply pipe e.
The outer casing k may be lifted from the foot d so as to uncover the
burner and accumulator by the handle q. By an examination of the

page_text: Drawing it will be seen that the series of small smokeless flames from:
the burner a impinge or play upon the bottom of the accumulator or
heater which thereby becomes rapidly heated. The heated mass thus:
supported in the body of the stove steadily gives out its heat, and the
air heated by it escapes into the room or apartment by the holes at 7..
The casing also becomes heated and radiates heat into the room or
apartment. The disk burner a may burn gas alone instead of a mixture
of gas and air. I prefer, however, to use a mixture of gas and air so as
to produce a series of small smokeless flames.
By constructing and arranging the parts of gas stoves in the manner
described and illustrated the room or place in which the stove is used is
heated economically and efficiently, no smoke is evolved, and by the
action of the heater or accumulator the air is prevented from becoming
heated to such a degree as to produce the unpleasant odour commonly
attending the use of stoves.
Having now described the nature of my Invention, and the manner in
which the same is to be performed, I wish it to be understood that I do
not limit myself to the precise details herein described and illustrated, as
the same may be varied without departing from the nature of my
Invention, but I claim as my Invention the improvements in gas stoves
for heating and warming rooms, and for other like purposes herein-
before described and illustrated in the accompanying Drawing, that is to
say, the combination of a burner producing a series of small flames with
an accumulator or heater, the said burner and accumulator or heater and
parts connected therewith being constructed and arranged substantially
as described and illustrated.
In witness whereof, I, the said John Stalvies, have hereunto set
my hand and seal, this Thirty-first day of March, in the year
of our Lord One thousand eight hundred and seventy-one.
0
Witness,
WM. E. EVERITT,
Finstall,
Bromsgrove.
JOHN STALVIES. (L.S.)