Improvements in Gas Burners for Heating and Cooking Purposes.
Year: 1889

page_text: Date of Application, 21st May, 1889--Accepted, 20th July, 1889
COMPLETE SPECIFICATION.
Improvements in Gas Burners for Heating and Cooking Purposes.
We, DANIEL SEBIRE ROBILLIARD of No. 62, St. Valier Street, St. Rocks, Quebec
(Meter Maker) and CHARLES GRIFFITHS DAVIES (Merchant) of Quebec, in the
Province of Quebec, and Dominion of Canada, do hereby declare the nature of this
invention and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
Our Invention has for its object to provide a gas burner for heating and cooking
purposes of such construction that a great saving in the consumption of gas, over such
burners at present employed, may be obtained; and a further object of the invention
is to provide a burner wherein an effective heating admixture and expansion of the
gas and air will be obtained and the best possible results accomplished from a
minimum quantity of gas.
Reference is to be had to the accompanying drawings forming part of this
specification, in which figure 1 is a central vertical section of an upwardly burning
annular burner; Figure 2 is a plan view of the same, with the crown piece removed;
Figure 3 is a bottom plan view of the detached cover of a downwardly burning straight
or horizontal burner; Figure 4 is a plan view of the latter with the cover removed;
Figure 5 is a longitudinal vertical section on line à-x figure 4, and figure 6 is a
transverse section on line y-y figure 4. Similar figures of reference indicate corre-
sponding parts in all the views.
Referring to figures 1 and 2, 10 represents a bell-shaped casting enclosing an air-
chamber 11 and formed with a neck 13 and a shoulder 12 and having a detachable
flanged ring 14 fitting in it at bottom, said ring having a cross-piece 15 and a central
elbow 16 to one arm of which a gas pipe 17 is connected whilst to the other is fixed
a pipe 28 leading upwards centrally through the air-chamber. 11. The head 18 of the
burner comprises an annular plate 19 having a central circular opening 20 and a
collar 21 surrounding the said opening and forming an upward continuation of the
neck 13, the space within the collar being adapted to constitute a retort or mixing
chamber 22. The annular plate 19 fits on the neck 13 by a downwardly projecting
flange 23, as shewn in figure 1. Upon the upper face of the ring 19 near the periphery
is an upwardly projecting flange 24 a space intervening between the inner face of the
flange and the outer face of the collar 21. 26 is a nozzle supported centrally in the
neck portion 13 by arms 25. Said nozzle has a small central orifice 27, and it is
screwed on the gas inlet pipe 28 whereby the ring 19 is connected to the lower ring
14. The head 18 of the burner also comprises a ring or band 30 resting upon the
ring 19 outside of the flange 24, the said ring or band 30 having its upper edge
notched, as shewn at 31.. Concentrically within the ring or band 30 a cap 32 is
supported by arms 33. The cap 32 has upwardly and downwardly extending
peripheral flanges 34, 35. The cap 32 covers, but does not close, the upper end of the
retort or mixing chamber 22. An annular chamber 35 surrounds the collar 21, which
chamber is in communication with a second chamber 36 enclosed by the head ring 30.
The latter chamber 36 extends upwards to the outlet notches 31. The head 32 is so
adjusted with regard to 21 as to ensure the proper admixture of the gas and air. An
annular crown piece 37 rests upon the flange 34 of the cap 32, which crown piece
extends beyond the notched periphery 31 of ring 30, and is provided upon the under
face with annular flanges 39, the one being adapted to fit on the cap flange 34 and
the other to just engage within the notched edge 31. The crown piece 37, and the
sections of the head 18 are united by two or more bolts 40 rivetted to the said crown
piece and passing through the arms 33 and the ring 19 inside of the flange 24, the
lower ends being provided with nuts or equivalent fastening devices. The burner is
suspended within the stove opening or other desired place, by a yoke 41 engaging

page_text: with the body ring 13 and resting upon the shoulder 12, being held in such position
by an engagement therewith of the lower flange 23 of the head. The space between
the crown piece 37 and the cap 32 is an air space, to keep the top of the burner as
cool as possible and to prevent the too sudden heating of the gas in the retort or
mixing chamber 22, and to allow the gas to expand more freely with the air as the
latter is drawn in through the body 10. The air passes up through the air chamber 11
into the mixing chamber 22 where it is met by the gas issuing from the orifice 27
above the supply pipe; the air and gas are thus thoroughly commingled in the
chamber 22 and pass out under the cap 32 through chamber 35 into the chamber 36
and up out beneath the crown piece through the notches 31, as indicated by the arrows
in figure 1.
In
In figures 3, 4, 5, and 6, we illustrate a downwardly burning straight or horizontal
_burner, more particularly adapted for roasting and baking purposes. This burner
consists of a body 43 having a perforated bottom and sides of approximately semi-
cylindrical form in cross-section. It has a gas and air inlet aperture 44 at one end
connected, by a pipe 45, with a box 46 enclosing the air inlet and mixing chamber 47
which is open at hottom and into which projects the gas supply pipe 48 terminating
in a nozzle 49 having a small orifice 50 in alignment with the pipe 48, and from which
aperture the gas issues into the chamber 47. The box 46 is open at bottom for the
admission of the air, or the air may be admitted in any other approved manner.
the body 43 is a longitudinal trough 51 which is preferably loosely laid in the body
portion, its ends being made to fit against the ends of the body portion 43, and it is
supported by a foot rest 52 at a slight distance from the perforated bottom of the body
portion 43. One end of trough 51 surrounds the gas and air inlet 44, as shewn in
figures 4 and 5, and in the bottom of the trough short transverse vertical partitions 53
are provided at intervals. The sides of the trough 51 are cut away at intervals so as
to leave apertures between them and the top cover 55, projections 54 being left which
are flush with the upper edge of the body portion 42. The latter is closed by the top
cover 55 screwed or otherwise secured thereon and having a flange 56 fitting within
the body portion 43 so as to make a tight joint. The cover 55 also has downward
longitudinal partitions or curtains 57 extending from one end of flange 56 to the
other, as shewn in figure 3. These longitudinal partitions enclose between them the
trough 51, spaces being left between them and the sides of the trough. The curtains 57
do not quite reach down to the bottom of the chamber 43, but terminate at a short
distance therefrom so as to permit the passage beneath them of the gaseous mixture.
Transverse baffle-plates 58 are also formed on the underside of the cover 55 which fit
within, or between, the sides of the trough 51 and descend only a short distance
therein. They are so located as to alternate with the partitions or baffle-plates 53, as
illustrated in figure 5. The trough, the baffle-plates and partitions, correspond to the
heating chambers 35 and 36 of the burner previously described.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The combination, with a bell-shaped air chamber and a mixing chamber
immediately over the same and connected therewith, of a gas supply pipe passing
through the air chamber into the mixing chamber, substantially as specified.
2. The combination, with an air chamber, open at bottom and top and a mixing
chamber immediately over the same and connected therewith, of an enclosing head
provided with an inner cup-shaped concentric diaphragm and a gas supply pipe
passing through the air chamber and into the mixing chamber, substantially as shewn
and described, whereby a series of communicating chambers are formed outside the
mixing chamber and the gas and air superheated and expanded by the burning gas,
as set forth.
3. The combination, with the base or body baving air passages therein and a gas
supply pipe entering said body, of a receptacle secured to said body constituting a
mixing chamber, a nozzle on the gas supply pipe entering the mixing chamber, baffle

page_text: plates adjacent to the mixing chamber, and an apertured casing spaced from, and
surrounding, the baffle plates and mixing chamber, substantially as and for the
purpose specified, whereby a super-heating chamber is obtained, as set forth.
4. The combination, with an open base, a gas supply pipe passing upward through
the same an annular plate resting upon said base provided with a central collared
opening constituting a mixing chamber, of a nozzle on the gas inlet pipe extending
into the mixing chamber a ring resting upon the annular plate a cap of greater
diameter than the mixing chamber connected with the ring and supported above the
said chamber and a crown piece supported above the ring and cap, substantially as
shewn and described.
5. The combination, with an open base a gas supply pipe passing upward through
the same an annular plate resting upon the upper surface of the base having a central
opening and an upwardly projecting collar surrounding said opening constituting a
mixing chamber, of a nozzle on the gas inlet pipe extending into the mixing chamber
a ring resting upon the annular plate near the periphery a cap of greater diameter
than the mixing chamber covering the same and projecting downward between the
said ring and mixing chamber a rib integral with the upper face of the cap and a
crown piece resting upon the said rib extending over the ring, substantially as shewn
and described.
6. The combination, with an open base a gas supply pipe passing upward through
the same an annular plate supported upon the body having a central opening and an
upwardly-extending collar surrounding said opening constituting a mixing chamber,
of a nozzle on the gas inlet pipe projecting into the mixing chamber a ring resting
upon the annular plate near the periphery having a notched upper edge a cap of
greater diameter than the mixing chamber supported above the same having an
annular rib upon the upper face a crown piece resting upon said rib, and means,
substantially as shewn and described, for uniting the several parts of the burner, as
set forth.
Dated this 21st day of May 1889.
D. S. ROBILLIARD.
C. G. DAVIES.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.