IMPROVEMENTS IN GAS STOVES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said William Thomas Sugg at
the Office of the Commissioners of Patents on the 17th March 1883.
WILLIAM THOMAS SUGO of Vincent Street in the City of Westminster,
Engineer "IMPROVEMENTS IN GAS STOVES,"
This invention relates to a novel construction of gas stove, whereby the heating
qualities are greatly improved, and the deleterious effects of the fumes arising from
the combustion of the gas are entirely avoided.
The apparatus consists of a cylinder closed at top, and set up on end on a suitable
base. Inside this cylinder, and at equal distances apart, are arranged two, three or
more perforated discs or baffles.
These discs or baffles accurately fit the cylinder, and may be secured thereto in
any convenient manner.
At the bottom of this cylinder, and communicating with an air pipe, is a small
cylinder or box, which forms a fresh air chamber, the top of which is covered by a
piece of perforated zinc or other material to steady the air current and prevent
a rush to the burner.
Near the bottom of the cylinder is an opening to allow for the withdrawal of
the burner for the purpose of lighting the gas, and this burner, which is preferably
a ring burner, is secured to the door for closing this opening.-Round the burner;
or in front of the door only, I apply a small tale cylinder or guard to prevent the
air which rushes in from the crack of the door disturbing the flame. The gas
supply pipe is provided with a regulator of any suitable form.
The cylinder is connected at its upper part with a tube, which will serve as a
flue to carry off the products of combustion. This flue is formed preferably in one
with the air tube of the same size, but of greater length, and both are inserted up
the chimney of the room in which the gas stove is placed.

page_text: I prefer this arrangement of flue and air pipe, because any down draught in the
chimney will act upon both alike, and cause, as it were, an equilibrium; whereas,
should the fresh air be drawn from the room, any down draught will be liable to
force the products of combustion down the flue into the room.
The perforated discs or baffles are intended to prevent the heat from the burner
rushing away up the flue, instead of radiating into the room.-I have found, by
experiment, that in a gas stove constructed with baffles as above described, the
amount of heat given off is nearly double that of a stove without baffles.
Outside the combustion cylinder I place an openwork shell cover of any suitable
shape and character, which may be japanned or otherwise ornamented. If desired,
the base of the stove may be made hollow, and placed in connection with the
external air in any suitable manner.
From the base the fresh cold air will issue through suitable openings between
the inner cylinder and outer shell, and will be heated by coming into contact with
the cylinder. If desired, a series of flat rings surrounding the combustion cylinder,
but leaving an annular space, may be secured to the inside of the shell or cover,
and will serve to deflect and divide the incoming current of fresh air into several
currents, which will become more or less heated as they rise upwards, and before
passing to the room.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Thomas Sugg in the Great Seal Patent Office on the
17th September 1883.
WILLIAM THOMAS SUGG of Vincent Street Westminster
GAS STOVES
"
"IMPROVEMENTS IN
This Invention relates to a novel construction of gas stove the heating qualities
of which will be much greater than. heretofore and by the use of which the
deleterious effects arising from the gas fumes are entirely avoided.
: .
In the accompanying drawing Fig: 1 is.a sectional elevation of a gas stove
constructed according to my invention Fig: 2 is a sectional plan taken on the
line X X Fig 1 and Fig: 3 is a sectional plan taken on the line Y Y Fig: 1.
A is a cylinder preferably of sheet iron which is set up on end on a base B and
is closed at top. Inside this cylinder are arranged two three or more perforated
discs or baffles C which are made to fit the cylinder and are secured thereto in any
convenient manner.
Near the bottom of the cylinder A is a partition C. having a central opening C².
in which is secured, by preference, a piece of wire gauze C³. The space below the
partition C. forms an air chamber to which air is admitted through an opening a.
made in the side of the cylinder A from a passage D, a similar opening a. being
made on the top of the cylinder A for the products of combustion to pass off to a
passage or flue D'
The passages D D', which may be of any suitable dimensions are formed in one
length which is placed outside the cylinder A.-At or about the centre of its length
this passage is divided by a transverse partition b. which forms part of a combined
air passage and chimney.
E is the air passage and E' the chimney. The chimney may be of any length
and the air passage must be some-what shorter. The air to supply a gas burner is
drawn in at the top of the pipe E and passes in the direction of the arrows into
the passage D. From this passage the air passes by the opening a. into the air
space at bottom of the cylinder and through the perforated part C³ of the
partition C to supply the burner. The heated air and products of combustion rise
through the cylinder (the perforated baffles C serving to break up the current and
deflect it on to the sides of the cylinder which thereby become heated) and passes
off by the opening a', and the passage D'. to the chimney E.
By forming the air passage and chimney in combination as shewn any down
draught in the house chimney will act equally on both E and E' and the two
currents will thus balance each other and the risk of the products of combustion
blowing out into the apartment will be avoided.
The gas for heating the apparatus is supplied by preference to a ring burner F
which when lighted is placed centrally over the perforated portion C³ of the
partition C. This ring is carried by a bracket arm F¹ which is pivotted to a
socket in the usual manner so as to be capable of turning into the dotted position
shewn in Fig: 3 when the burner is to be lighted.—c is a small pipe which connects
the top of the cylinder A with the chimney E' so that any gas that escapes from
the burner from any cause, instead of collecting in the top of the cylinder in the
form of an explosive mixture may be carried off to the chimney
As it is necessary for the proper working of the apparatus that the cylinder shall
(except at the parts a. a¹ & c) be practically air tight, I fit onto the bracket arın Fl
a metal or other suitable shutter F which will serve to close up the opening
through which the burner is swung out for lighting.

page_text: Outside the cylinder A I. place a perforated metal casing G of an ornamental
character and inside this casing G I arrange two three ог more annular
deflectors H of somewhat larger diameter internally than the cylinder. These
deflectors are intended to deflect the currents of air as they rise on becoming heated
by contact with the surface of the cylinder and thus ensure proper radiation of the
heat in the apartment.
T
Although I have shewn and described only a single apparatus it will be evident
that the number of heating cylinders may be increased one air passage E and
chimney E' being arranged to apply to all in any convenient manner.
The gas supply pipe is provided with a regulator which will be adjusted to allow
a certain quantity of gas per hour to pass by which means the heat can be regulated
to the greatest nicety.
Having now described the nature of my Invention for "Improvements in gas
stoves" and explained the manner of carrying the same into effect I claim.
First: In a gas stove the combination with a heating cylinder A of perforated
baffles C. C. and partition C¹ substantially as and for the purpose set forth.
Second-In a gas stove the combination with a heating cylinder A. of the
combined air passage and chimney E. E'. substantially as and for the purpose set
forth.
Third: The combination of the heating cylinder A external casing G and annular
deflectors H substantially as and for the purpose set forth.
Fourth: The arrangement and construction of gas stove substantially as herein
shown and described.
In witness whereof I the said William Thomas Sugg have hereunto set my hand
and seal the seventeenth day of September in the year of our Lord One thousand
eight hundred and eighty three.