Improvements in Apparatus for 'Supplying Gas to Atmospherio or other Burners.
Year: 1895

page_text: Date of Application, 10th May. 1895
Complete Specification Left, 7th Feb., 1896-Accepted, 4th Apr., 1896
PROVISIONAL OF EUIFICATION.
Improvements in Apparatus for 'Supplying Gas to Atmospherio or
other Burners.
I, JOHN FREDERICK DUKE of 3 Union Square, Newington in the County of
London, Chemist, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to apparatus for supplying gas to atmospheric
o other burners and so far as it refers to atmospheric buiners it relates to means
of providing such burners with a pilot jet of non-atmospheric gas and of supplying
gas to such jet, in addition to the supply of gas to the atmospheric buinei
Hitherto when atmospheric burners have been provided with a pilot jet it has
been usual to fit the gas supply apparatus with two taps, one for the pilot jet and
the other for the burner propei.
Now my invention consists primarily of a gas supply apparatus in which a
non atmospheric supply to the pilot jet and the supply to the atmosphoric buinet
are both controlled by one and the same tap In carrying out this part of my
invention I forin in the plug of the tap a pinhole leading from the ordinary gas
way of the plug to the periphery of same and I form in the shell or body of the
tap another pinhole, with which the pinhole in the plug comes into coincidence at
a certain position of the plug relatively to the shell of the tap. This pinhole in
the shell is in communication with the pilot jet. When the tap is turned fully off,
no gas passes either to the pilot jet or to the burner proper, but when the plug is
given a partial turn say to the extent of one tenth or one twelfth of a revolution,
spring or other stop being provided to regulate the movement, the two pinholes
come into coincidence, while sufficient gas for the pilot jet passes from the supply
pipe to the ordinary gas way of the plug by a bye-pass formed for the purpose
preferably by cutting a very slight enlargement or groove in the hole at the supply
side of the plug, so that gas will loak from the supply pipe to the ordinary gas way
of the plug and thence to the pilot jet before it mixes with the au and before the
said gas way comes into coincidence with the main pipe or way leading from the
tap to the bune proper. The pilot jet can thus be lighted with non atmospheric
gas before any gas is turned ou to the burner proper. Then on turning the tap
further the gas passes to the burner proper and becomes ignited 11om the pilot
jet; the supply to the pilot jet is cut off when the tap reaches a certain point
because the pinholes in the plug and shell of the tap are then out of coincidence
with each other. If proferred however the supply to the pilot jet may remain
although in that case it would be atmospheric but this is not desirable in the case
of incandescent lamps.
In applying the invention to burners or fittings such as those of the Welsbach
type in which the burner is screwed upon the piece that carnes the tap, I carry
the pinhole in the shell to the top of this piece outside the screw and 1 form a
corresponding pinhole outside the screw of the burner. But in screwing the two
parts together it is not always practicable to bring the two holes into coincidence
and I therefore form a circular groove or channel in the meeting face of one of the
parts, so that the gas may pass by this groove from one piuhole to the other.
From the pinhole in the burner I carry up a pipe which is connected centrally to the

page_text: burner cap and then extends to a suitable position for igniting the admixture of
gas and air at the burner proper.
My invention applies not only to the ordinary atmospheric burners for lighting
purposes but to atmospheric burners used in gas stoves and to non atmospheric
burners. It is particularly applicable to burners whether atmospheric or non
atmospheric which are automatically ignited in a known manner by causing the
gas to play upon platinum black or a mixture of platinum black and palladium
black so as to tender incandescent a platinum wire leading therefrom to a position
near the outlet of the burner and thereby ignite the gas at the burner.
la
applying the invention to these automatically igniting bainers, finst the gas from
the pilot jet, which in all cases is non-atmospheric, will be allowed to play on the
platinum black or mixture and when the wie has become incandescent the gas
will be turned on to the butner proper and will become ignited by the incandescent
wire.
1
ليمو
1007
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents
Improvements in Apparatus for Supplying Gas to Atmospheric or
other Burners
1, JOHN FREDERICK DUKE of 3 Union Square, Newington in the County of
London, Chemist do hereby declare the nature of the said invention and in what
manner the same is to be performed to be particularly described and ascertamed
In and by the following statement
-
This mention has reference to apparatus for supplying gas to atmospheric or
other burners, and so far as it refers to atmospheric burneis it relates to menus of
providing such burners with a pilot jet of non-atmospheric gas, and of supplying
gas to such jet, in addition to the supply of gas to the atmospheric burner
Hitherto when atmospheric burners have been provided with a pilot jet, it has
been usual to fit the gas supply apparatus with two taps, one for the pilot jet and
the other for the burner proper
Now my invention consists primarily of a gas supply apparatus in which a non-
atmospheric supply to the pilot jet and the supply to the atmospheric buiuet are
both controlled by one and the same tap. In caying out this part of my inven-
tion, I form in the plug of the tap a pinhole or other suitable small passage leading
from the ordinary gas way of the plug to the periphery of same, and I foum in the
shell or body of the tap another pinhole, with which the pinhole in the plug comes
into coincidence at a certain position of the plug relatively to the shell of the tap
This pinhole in the shell is in communication with the pilot jet. When the tap 18
tuined fully off, no gas passes either to the pilot jet or to the burner proper, but
when the plug is given a partial tuin, say to the extent of one-tenth or one-twelfth
of a revolution, a spring or other stop being provided to regulate the movement,
the two pinholes come into coincidence. while enfherent gas for the pilot jet passes
from the supply pipe to the ordinary gas way of the plug by a bye-pass formed fol
the purpose, so that gas will leak from the supply pipe to the ordinary gas way of
the plug and thence to the pilot jet before it mixes with the an, and before the
said gas way comes into comicidence with the main pipe or way leading from the
tap to the burner proper. The pilot jet can thus be lighted with non-atmospheric
gas before any gas is turued on to the burner proper. Then on turning the tap
further the gas passes to the burner prope and becomes ignited from the pilot
Jet, the supply to the pilot jet is cut off when the tap reaches a certain point,
because the pinholes in the plug and shell of the tap are then out of coincidence

page_text: With each other.
It preferred however the supply to the prot jou may rem
although in that case it would be atmospheric, but this is not desirable in the case
of incandescent lamps.
In applying the invention to buiners or fittings such as those of the Welsbach
type in which the buiner is screwed upon the piece that carries the tap, I carry
the pinhole in the shell to the top of this piece outside the screw, and I form a
corresponding pinhole outside the screw of the burner. But in screwing the two
parts together it is not always practicable to bring the two holes into coincidence,
and I therefore form a circular groove or channel in the meeting face of one of the
parts, so that the gas may pass by this groove from one pinhole to the other.
From the pinhole in the burner I carry up a pipe which is connected centrally to
the burner cap and then extends to a suitable position for guiting the admixture
of gas and air at the burner proper.
The accompanying drawings will serve to fully explain my invention
They
show its application to a burner of the Wolsbach type. Figure 1 is a side view,
Figure 2 a vertical section and Figue 3 a plan, they show the apparatus on a
somewhat enlarged scale.
a is the piece connected with the gas supply; it is formed in one with the shell b
of the tap and with a screw-threaded continuation o to which the lower pait d of
the burner is screwed e is the plug of the tap and the handle or finger piece for
turning it gy are the ordinary inlets for atmospheric air and is the perforated
nozzle through which the gas passes before mixing with the air. is the annular
piece of gauze where the mixture of gas and air is burnt and is the burnci cap
constituting a support for the incandescing mantle
According to my invention I form in the plug e of the tap a small passage way
leading from the ordinary gas way m of the plug to a certain point of the periphery
of the plug as seen in Figure 2, and I form in the shell b of the tap another small
passage way or pinhole n with which the passage way I comes into coincidence (as
seen in Figue 2) at a certain position of the plug e relatively to the sholl b. The
pinhole n is in communication with the pilot jet as hereinafter described. When the
gas is turned off no gas passes either to the pinhole n (and thence to the pilot jet)
or to the burner proper, but when the plug e is given a partial turn to approxi-
mately the extent seen in Figure 2, the holes and n are in comcidence while
sufficient gas for the pilot jet passes from the supply pipe by a bye-pass p aud
Outside the shell of the
thence to the gas way n of the plug to the holes I and n.
plug is a special notch q with which the usual stop pur is caused to engage by
means of a spring and thereby act as a spring stop when the plug has been turned
far enough to bring the holes and n into coincidence. Gas will thus leak to the
pilot jet without mixing with the an and before the gas way m of the plug comes
into coincidence with the main pipe leading from the tap to the burnet proper.
The pilot jet can thus be lighted with non-atmospheric gas before any gas is turned
on to the burner proper. Then, as will be readily understood on inspection of
Figure 2, on turning the tap further the gas passes to the burner proper and will
become ignited from the pilot jet and the supply to the pilot jet is cut off when the
tap while being turned to the full extent reaches a certain point, because the
pinholes and n are then out of coincidence
I will now proceed to describe the communication between the pinhole n and
the pilot jet
The pinhole n extends up to the top of the part c (outside the
As it 18
screw) and there is a corresponding pinhole in the part d of the burner.
not always practicable in screwing the pails c and d together to bung the two
holes n and t into coincidence I forin a cucular groove on channel uu in the
meeting face either of both the parts as shown or of one of them, so that the gas
may pass by this groove from the pinhole n to the pinhole t. vis a pipe carried
up from the pinhole to the burner cap to which it is conuected centrally, a
passage way to being continued therefrom to the pilot jet z.
My invention applies not only to the ordinary atmospheric butuers for lighting
purposes, but to atmospheric buruers used in gas stoves and to non-atmo-phenic

page_text: burneis It is particularly applicable to burners whether atmospheric or non-
atmospheric which are automatically ignited in a known manner by causing the
gas to play upon platinum black contained in the pores of a small meerschaum
block as described in my Specification No. 909 of 1895 or upon a mixture of
platinum black and palladium black as described in my Specification No. 21032
of 1894 so as to rende incandescent a platinum wie leading therefrom to a position
near the outlet of the burner and thereby ignite the gas at the burner. y represents
one of these igniting devices attached to the cap and is the igniting platinum
we of same. When the invention is applied to these automatically igniting
burners, fust the gas from the pilot jet, which in all cases is non-atmospheric,
plays on the platinum black or mixture and when the platinum wire z has become
Incandescent, as it does in a very few seconds, the gas will be turned on to the
bune proper and will become ignited by the incandescent wie.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what
I claim in respect of apparatus for supplying gas to atmospheric or other
burneis is—
1. A tap having in addition to the ordinary gas way in the plug for the flow of
gas to the burner proper, a small passage way in the plug and another small
passage way in the shell of the tap, the last named passage way being in com-
nication with the pilot jet, the paits being so aanged that when the plug is
turned a short distance the gas flows through the small passage ways to the jet but
not to the burner proper and that when the plug is tuned a further distance the
gas flows to the burner proper, and that when the tap is fully turned there is no
flow of gas either to the pilot jet on to the burner proper, substantially as and for
the purpose herein before described.
2. The improved tap constructed and acting substantially as hereinbefore
described and shown in the accompanying drawings for the purpose set forth.
3. In burners or fittings such as those of the Welsbach type, a gas way such
as in the piece d and a pipe such as v leading from the said gas way to a pilot jet
in combination with a gas way such as in the part e leading from a tap such as
described and with a groove or channel in the meeting faces of both or either of
the parts c and d, substantially as and for the purpose set forth.
4. The combination with a tap such as her einbefore described by means of
which gas can be turned on first to a pilot jet only and then to the burner proper,
of an automatic gas igniter of the kind hereinbefore referred to whereby the pilot
Jet becomes automatically ignited when the gas is turned on to the jet and serves to
ignite the burner proper when the gas is subsequently turned on to the same,
substantially as herembefore described.
Dated this 7th day of Februaıv 1896
J C MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chattered Patent Agents.