IMPROVEMENTS IN APPARATUS FOR PRODUCING LIGHT AND HEAT BY MEANS OF GAS
Year: 1885

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of my invention for "IMPROVEMENTS IN APPARATUS FOR PRODUCING LIGHT AND
HEAT BY MEANS OF GAS" a communication from John W. Baker of Philadelphia,
Pennsylvania, United States of America, Gentleman and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
My invention relates to apparatus for burning gas for heating purposes, and also
for lighting purposes when desired, and consists of a series of vertical flue tubes
connected at each end with an annular drum or hollow ring, and enclosing a central
flue chamber connected with one of said drums and surrounded by vertical gas
tubes and jets, the products of combustion of ignited gas and air passing down-
ward through said central flue and being wholly directed therefrom to and through
said vertical flue tubes and drums to the chimney thereby imparting heat by
radiation to the surrounding atmosphere.
In the accompanying drawings.
Figure 1 is a plan view of the improved gas stove, and
Figure 2 is a vertical section through the centre showing the relative arrangement
of the several parts.
Figure 3 is a vertical section of a modification of the apparatus adapted to be
used for lighting as well as heating purposes.
Figure 4 is a transverse section on the line a a figure 3; and
Figure 5 is a transverse section on the line b b figure 3.
Upon a suitable stand or supporting frame indicated at A is supported an
annular drum or hollow ring B, from which arises a series of upright flue tubes D D
connecting at the top with a second annular drum or hollow ring C; one of these
drums (the upper one in Figures 1 and 2, and the lower one in figure 3) being
connected by a draught air pipe leading to the chimney. Within the circular space
formed by the series of upright flus tubes D D and between the nonular drums B
[Price 6d.1

page_text: and C is supported a central flue chamber F, connecting directly at its open lower
end with the annular chamber B if the latter be a flat drum, or having a closed
base and connecting by tubes E E if the chamber B is constructed in the form
of a hollow ring. This latter construction is clearly shown in figure 2 of the
drawings.
5
Surrounding the base, or placed at any suitable distance below the base of the
central flue F is a gas chamber L, to which gas is supplied from a tube shown at K.
A series of gas tubes J J proceed from the top of the gas chamber L, and are
arranged vertically around the central flue F, extending to about the top thereof.
A cylindrical or oval casing H having openings at its bottom is placed within the 1
series of upright flue tubes D D and encloses the series of gas-tubes J. J and
central fluo F. This casing forms an air chamber to direct a current of air with
greater certainty from the base of the apparatus to the region of the ignited gas,
and to heat said air as well as the gas in the tubes J J to a higher temperature, in
their passage to the place of ignition. This casing or chamber H may however be
omitted, in the form shown in figures 1 and 2 more especially, if the chamber B is
constructed in the form of a hollow ring; for the central flue F will radiate
sufficient heat to raise the temperature of the gas in the surrounding gas tubes J J
and also highly heat the surrounding atmosphere, and the series of outer vertical
flue tubes D will also have the same effect, so that the result will be to cause an
upward draught of hot air to the top of the gas jets and region of ignition where
it will mingle with the burning gas.
In the form of the device shown in figure 3, the outer casing H forming an air-
chamber, is essential to its complete or successful operation, as said central flue F
is connected at its base with the upper annular drum or ring C, and is supplied
with a glass cylinder surrounding the flame on the inside, and is intended in this
form to be used for lighting as well as heating purposes.
Referring again to figures 1 and 2, in this form of the apparatus, in order to
produce a strong and increased upward draught of air, heated in its passage to the
region of the ignited gas and air and also to prevent side currents of air from
affecting the same and also the steadiness of the flame, I provide a chimney M,
which may be cylindrical but is preferably of the form of an inverted frustrum of
a cone, supported and fitting closely within the central opening of the upper
annular drum C, and extending down to below the top of the flue chamber F and
said gas tubes, and being of sufficient diameter at its base to leave a reasonable air
space surrounding the gas jets. The said chimney M, when of conical form, may
be made of bright metal as to serve not only the main purpose stated, but also act
as a powerful reflector to throw the light from the burning gas and air upward
and outward into the room. In this construction the metal casing or air chamber H
is to be omitted as the chimney M will of itself cause a sufficient and strong
upward draught of air from below which will be heated as well as the gas in the
tubes J J by radiation from the surrounding flue tubes D D and central flue F.
་
The operation is as follows:-Gas enters from a supply pipe K to the gas
chamber L, passing thence to the series of upright gas tubes J J, and is ignited at
the upper ends thereof, where the heat produced thereby will induce a strong
upward current of air between said central floe F and outer flue tubes D D, or
through said air chamber H when used in the form of device shown in figure 3
which air heated in its passage, will there mingle with the gas. The flame and the
products of combustion of the ignited gas and air will be drawn from the gas jets
over the open top of the central flue F down through the same and to the lower
annular drum B (see Figure 2), thence to the series of upright outer flue tubes D D
to the upper annular drum C, and from thence to the outer air chimney; these parts
being so connected together as shown in the drawings. An air-tight connection is
formed between the outer air chimney flue and the top of the central flue F; and
as the stove becomes hotter the gas in the tubes J J as also the air passing upward
around the central flue to the gas jets will be expanded and highly heated in their
passage to the point of mingling and ignition, and thus the action described will
✔

page_text: become more rapid; the heating and expansion of the gas and air effecting an
economical use of gas and producing a steady white flame of intensely high
temperature. In consequence thereof great heat will be radiated from the flue
chamber, flue tubes, and drums, whereby the surrounding atmosphere will be
heated; advantage also being derived, in the form shown in Figure 3, from the
light produced.
In the modification of the device, shown in Figure 3, the products of combustion
drawn down through the central flue to the base thereof are first directed into the
upper annular drum, and from thence downward through the upright flue tubes to
the lower annular drum, and thence to the chimney; whereas in the form of the
apparatus shown in Figures 1 and 2 the draught is reversed between the central
flue and the outer air chimney, and is the preferable form for a heating apparatus.
In order more effectually to utilize all the heat of which my improved stove is
capable of producing, the central flue chamber F in the construction shown in
Figure 2 may have a flanged opening at its base, to receive the open end of a
vertical hot-air flue placed within said central flue and extending upwards through
the same and through the chimney M to the top of the upper annular drum. In
such construction, however, the gas chamber L will be placed at some little distanco
below and clear of the base of the central flue and of the lower drum with which
it is connected. Such hot air flue, thus located within the central flue chamber F
will communicate with the open cool air at the base of the stove, but will be highly
heated by the products of combustion passing downward through the central flue
and impinging against it. An upward draught of air through it will thus be pro-
duced, which will become heated in its upward passage and may be permitted to
pass into the room at the open top end of the said hot air flue or be led therefrom
by usual suitable means to other rooms or localities to be warmed.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign Correspondent I declare that what I claim is
First. A gas stove, consisting of the combination with a lower annular drum or
hollow ring, of a like upper drum or ring the said drums or rings being connected
together by a series of upright radiating flue tubes placed between them; a central
flue chamber supported within the space formed by said series of upright flue tubes
and between said drums and connected by an air-tight joint at its base with said
drums and tubes; a gas chamber; and a series of gas tubes surrounding said
central flue; whereby the products of combustion of the ignited gas and air will be
drawn into said central flue and downward through the same to and through the
said drums and radiating flue tubes to the chimney, thereby imparting heat by
radiation to the surrounding atmosphere, substantially as described.
Second. Apparatus for producing both light and heat; as shown in Figure 3,
consisting of two central flues F and H placed one within the other and affording
an air passage between them, in combination with a gas chamber and a series of
gas tubes arranged in the air space between said central flues; an upper and a
lower annular drum or hollow ring and a series of upright connecting flue tubes
placed between them, said tubes communicating at their upper ends with the base
of said inner central flue, whereby the flame from the ignited gas and air will
produce a light above such gas jets and the products of combustion therefrom will
be drawn down through said inner central fue and carried through said radiating
tubes below, to the draught pipe, and impart heat therefrom by radiation to the
surrounding atmosphere, substantially as described.
Third. The combination in a gas stove, as shown in Figure 2, consisting of a
central flue chamber F with gas tubes surrounding the same of upper and lower
annular drums B and C, with upright radiating flue tubes D D located between
them, and a chimney M supported within the central opening in said upper annular
drum, above such central flue, and extending down to said gas tubes, all constructed
and arranged substantially as, and for the purpose, described,

page_text: Fourth. The combination in a gas stove consisting of the annular drums B
and C, of flue tubes D D; central flue-chamber F hermetically connected at its
base with said lower annular drum B; a gas chamber and a series of upright gas
tubes surrounding said central flue; a chimney M supported within said upper
annular drum C and extending down to the region of the gas jets; and a central
vertical hot air flue within said central combustion flue and said chimney all
constructed and arranged substantially as described.
Dated this 10th doc T- 100K