Improvements in Gas Burners.
Year: 1898

page_text: Improvements in Gas Burners.
I, RAGLAND MOMAND, of 27, Union Square, New York, United States of America,
Inventor, 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 :-
The present invention relates to gas burners and especially to that class of burner
which is adapted to burn mixed air and gas and effect an illumination by heating a
mantle of reticulated metals to incandescence. More particularly, the object of the
present invention is to provide in such a burner, a pilot light for igniting the main
supply. It is desirable in the class of burners here referred to that the pilot light
should be of the smallest possible dimensions for the reason that said light burns
pure gas and hence there is more or less unconsumed carbon thrown off which has a
deleterious effect upon the mantle.
By the use of my invention I obtain a pilot light which burns only during the time
when the main gas supply is cut off, coming into operation simultaneously with the
cutting off of the main gas supply, and being extinguished when the gas supply
passage is turned to its full opening..
In the drawings I have illustrated a construction embodying my invention in
which Fig. 1 is a vertical section of a gas burner provided with my improvements.
Fig. 2 is an enlarged detail view in central vertical section of parts shown in
Fig. on a plane at right angles to the section plane of Fig. 1.
Fig. 3 is a view similar to Fig. 2 taken on a plane parallel with the plane of Fig. 2
but passing through the main valve passage.
Fig. 4 is a section along line 4-4 of Fig. 1.
Fig. 5 is a detail plan view of the gas supply disk.
Fig. 6 is a detail view.
Like letters of reference refer to like parts throughout the several views of the
drawings.
Referring to the drawings in detail, 1 designates an internally threaded nipple
which is adapted to screw on to the gas fixture to which the burner is to be applied.
The nipple is provided on its upper portion with an opening. 3 designates a coupling
which is threaded on to the nipple tube. On its upper portion this nipple is provided
with a shoulder portion upon which rests the flange 4 which supports the gallery 5.
The bottom of the gallery 5 is provided with openings 6, and with a sleeve 6ª also
provided with openings 6b, so that by the adjustment of the gallery 5 relatively to the
tube 7, the amount of air admitted may be correspondingly varied. The tube 7 is
screwed into the upper portion of the coupling 3 so as to be adjustable therein, and
has secured in its lower portion the gas supply disk 8 which is provided with
apertures 9 for the passage of the gas and an annular projecting portion 8ª surrounding
a flanged opening 9. The apertures 9 are arranged at an uniform distance from
each other, so that the gas passing through the same will rise in uniformly spaced
columns separated from each other so that the best results of the admixture of gas
and air is secured. The apertures 9 are bored to admit a given quantity of gas per
unit of time at a given pressure and when the pressure rises or falls below the unit

page_text: .
contemplated the supply of gas may be regulated by screwing the tabe 7 with disk 8
into or out of the coupling 3 so that the projecting portion 8 will extend into or out
of the opening 10% in the disk 10b secured in the coupling, thus varying the size of
gas passage to agree with the pressure. Also screwed into the upper portion of the
coupling 3 is the tube 10, passing through the flanged opening ga and which feeds
the gas to the pilot flame. Upon the upper portion of this tube is mounted a hollow
bell shaped gas reservoir 11, which is provided with a gas passage 12 into which
projects the screw 13, by means of which the amount of gas passing is regulated.
The hollow bell shaped gas reservoir 11 is provided with a recess 12ª on its upper
side, within which recess the pilot flame burns, the purpose of this recess being to
hide the pilot flame and at the same time protect it from draughts so as to ensure its
being constantly ignited.
14 designates a valve plug. The vaive plug passes diametrically through the
coupling 3 and is provided with passages 15 and 16 registering with ports 17 and 18
formed in said coupling. The valve passage 15 puts in communication the port 17
with the gas supply, constituting the main gas supply. The passage 16 extends
substantially 4/5 of the circumference of the valve plug and puts the port 18 which
communicates with the tube 10 into communication with the gas supply. The
passages 15 and 16 are so disposed upon the valve plug relatively to each other, that
when the valve plug is partially rotated to cut off the main gas supply, the first
movement brings the passage 16 into communication with the port 18, thus imme-
diately establishing a flow of gas to the pilot flame before the main gas supply has
appreciably diminished. When the valve plug is rotated to open the main gas supply,
the passage through the tube 10, the port 18 and the valve passage 16 will be
maintained open until the main gas supply passage is fully opened, thus ensuring a
supply of gas to the pilot flame until the main gas supply shall have reached the
point of consumption where it will be ignited by the pilot flame, the pilot flame is
maintained by the supply of gas contained in the gas reservoir 20 even after the gas
supply is cut off, thus ensuring the main gas supply being ignited in case the valve
is operated quickly and the passages to the pilot flame closed suddenly when the
main gas passage is opened.
A semi-spherical or conical projection 19 is formed on the coupling 3 and is
adapted to enter the opening 2 in the nipple 1. As the pressure of gas fed to the burner
varies, the passage existing between the projection 19 and the walls of the opening 2
is varied to compensate for differences in pressure.
By these means it will be seen that I obtain a gas burner in which variations in
pressure of the gas supply may be easily compensated for to ensure an uniforın supply
of gas to the burner, and the pilot light is only maintained ignited when the main
gas supply is cut off so that there is a minimum amount of wasteful consumption of
gas and practically no deposit of unconsumed carbon on the mantle.
It will be noted that the hollow bell shaped gas reservoir acts also as a spreader of
the mixed gas and air.
Having now particularly described and ascertained, the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1: The combination with a gas burner of the character described, of a main gas
supply and a secondary gas supply, means for alternately maintaining one or the other
of said gas supplies ignited, and means carried by the secondary gas supply for
spreading the gas from the main gas supply substantially as specified.
gas
2: The combination with a gas burner of the character described, of a main
supply, a secondary gas supply, a spreader for the main gas supply, a gas reservoir in
communication with the secondary gas supply and means for alternately maintaining
or the other of said gas supplies constantly ignited, substantially as
specified.
one
3: The combination with a gas burner of the character described, of a main

page_text: gas supply and a secondary gas supply, a recess at the upper end of the tube
through which the secondary gas supply passes, in which recess the secondary
gas supply is burned, means for spreading the main gas supply, a gas reservoir
or the other of
in the secondary gas supply, and means for maintaining one
said gas supplies constantly ignited, substantially as specified.
4: The combination with a gas burner of the character described, of a main gas
supply, a secondary gas supply, a gas reservoir located near the point of ignition of
the secondary gas supply and acting as a spreader of the main gas supply, and means
for alternately maintaining one or the other of said gas supplies constantly ignited,
substantially as specified.
5: In a gas burner of the character described the combination of a nipple having a
central opening, a coupling provided with two gas passages, a gas tube communicating
with the gas passage, a gas reservoir located at the upper portion of said tube, a valve
plug provided with a main and a secondary passage, so disposed relatively to each
other that the secondary passage is closed when the main passage is open, and a
projection on the coupling entering the opening formed in the nipple, substantially
as specified.
6 In a gas burner of the character described the combination of a nipple provided
with an opening at its upper portion, a coupling provided with inner and outer
flanges, a gas mixing tube threaded into the outer Hange, a smaller tube located
within the gas mixing tube and threaded into the inner flange, a shoulder formed on
the walls of the outer flange, an apertured disk resting on said shoulder, a gas
reservoir located on the upper portion of the inner tube, a recessed burner on the
upper portion of the gas reservoir, main and secondary gas passages communicating
respectively with the outer and inner tubes and a valve controlling said passages,
so as to alternately maintain one or the other of said passages open, substantially as
specified.
7: In a gas burner of the character described, the combination of a main gas
supply, a secondary gas supply, and a gas reservoir for said secondary supply, the
said reservoir being adapted to serve as a spreader for the gas from the main supply,
substantially as described.
8: In a gas burner of the character described, the combination of a main gas supply,
a secondary gas supply and a gas reservoir for said secondary supply, said reservoir
being formed with a recess in which the secondary gas supply is burned, and
adapted to serve as a spreader for the gas from the main supply, substantially as
described.
9: The combination with a gas burner of the character described, of a main gas
supply and a secondary gas supply, a gas reservoir for said secondary supply, said
reservoir being provided with a recess through which passes the secondary gas
supply and in which recess the secondary gas supply is burned, means for regulating
the supply of gas to said recess means for spreading the main gas supply, and means
for maintaining one or the other of said gas supplies constantly ignited, substantially
as described.
10 In a gas burner of the character described the combination of a gas supply,
5 an adjustable coupling interposed between said gas supply and burner, said coupling
being formed with a projection which extends into the opening of the gas supply, a
main and secondary supply through said coupling to the burner and means for
controlling said passages whereby the flow of gas is maintained alternately through
either the main or secondary supply, substantially as described.
0 11 In a gas burner of the character described, the combination of a main gas
supply, a secondary gas supply and a gas reservoir for said secondary supply, said
reservoir being formed with a recess in which the secondary gas is burned, substantially
as described.
12: In a gas burner, the combination of a gas supply passage, a mixing tube
5 adapted to be moved toward and away from the said gas supply passage, and a disk
carried by the mixing tube, said disk being provided with a projection adapted to

page_text: close the supply passage, and with a series of openings for the passage of gas to the
mixing tube, substantially as described.
Dated this 5th day of February 1898.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.