An Improvement relating to Burners for Incandescent Gas-lighting..
Year: 1896

page_text: Date of Application, 22nd Oct., 1896-Accepted, 9th Jan., 1897
1
COMPLETE SPECIFICATION.
An Improvement relating to Burners for Incandescent Gas-lighting..
I, FREDERICK GEORGE BARTLETT, of 4, Elton Road, Bishopston, Bristol,.
Plumber, 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:-
This invention, which relates to burners for incandescent gas lighting, consists.
in means whereby a series of burners can be controlled by one main cock or tap,
provided with a by-pass arrangement.
According to this invention a valve is fitted in a chamber through which com-
munication is made between a burner and the gas supply pipe of such burner."
Normally, the valve lies in its seat and closes the said communication, but, when
by opening the controlling cock or tap aforesaid, a sufficient pressure of gas is
allowed to act from below on the valve, the latter is forced out of its seat and the
gas flows to the burner. The gas thus supplied is ignited by a pilot light which
is supplied with gas through a channel not controlled by the said valve but.
controlled by the by-pass of the main cock or tap. The communication between
the burner and the gas supply pipe remains open while the valve is kept raised,.
but when the pressure of gas acting from below on the valve, is withdrawn by
turning off the main cock, the valve descends to its seat and blocks the
communication.
Referring to the accompanying drawing, Fig. 1 represents, in vertical section,
a valve and valve chamber devised, in accordance with this invention, for
controlling gas supply to burners of incandescent gas lights.
The barrel a, which is at the lower end screwed or otherwise fixed on a gas
supply pipe b, governed by a main cock or tap having a by-pass arrangement, is
fitted internally with a thimble c of gun-metal, brass, or other suitable metal or
material. Below the thimble c is a seat formed in the barrel a for the valve d
which is of aluminium, or other light or suitable material. The thimble is slotted
from the top downwards to a short distance from the bottom. At Fig. 2 is shown.
a plan of the thimble c.. It is obvious that when the valve d is in the position
shown at Fig. 1, that is to say, in its seat, the aperture a¹ in the valve seat is.
blocked and communication is closed between the gas supply pipe b and the-
nipple e which latter is of the kind usually employed in incandescent gas-lighting,
and is perforated at top. The channel f to the pilot light tube g is made at one
side of the barrel a and opens into the space below the valve seat. The supply of
gas to the pilot light tube g is derived through the by-pass of the main cock and
is regulated by the regulating screw of the kind ordinarily employed in.
regulating gas supply to by-pass channels.
In order to establish communication between the supply pipe b and the nipple e
the main cock controlling the supply of gas to the supply pipe b is opened and
thereby a sufficient pressure of gas is admitted through the aperture a¹ to the
underside of the valve d to raise the said valve from its seat above the lower,
ends of the ports c¹ in the thimble c, as seen at Fig. 3. The gas has then free
passage through the ports c to the space above the valve and thus to the
perforated nipple e from which it passes to the buruer and is ignited by the pilot
light which is permanently alight. The valve d remains in the raised position.
while the pressure of gas continues sufficient to keep it so. When, however, the

page_text: main supply cock is turned off and the pressure of gas thus withdrawn, the valve
returns to its seat and closes the communication between the supply pipe b and the
space above the valve.
Instead of being. made with side bearing collars, as shown, the valve may be
made to fit the barrel internally without such collars.
Under a modification, the thimble c is dispensed with and the ports for the
passage of the gas are made in the wall of the barrel a.
Under another modification, in which also the thimble c is dispensed with, the
ports are not made in the barrel, which is unslotted. The ports are made in the
eide bearing collars of the valve. The valve thus slotted is shown in side view at
Fig. 4 and in plan at Fig. 5. The side bearing collars are indicated by the letter
and numerald and the ports by the letter and numeral d².
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
(1.) In incandescent gas lighting; means for controlling the supply of gas from
the supply pipe to the burner; said means consisting of a valve such as d, or its
equivalent, seated in a barrel such as a and normally resting in its seat and
80 closing the communication between the supply pipe and the burner, but rising
under the influence of a sufficient pressure of gas and thus permitting gas to flow
to the burner through ports such as c¹ provided in a thimble such as c, substan-
tially as hereinbefore described with reference to Figs. 1 to 3 inclusive of the
drawings.
(2.) The modification hereinabove set forth under which the thimble for the
valve is dispensed with, and the ports for supply of gas to the burner are made in
the wall of the barrel.
(3.) The further modification hereinabove set forth under which the thimble is
also dispensed with, and the ports for supply of gas to the buruer are provided in
the side bearing collars of the valve, as shown at Figs. 4 and 5 of the accompanying
drawings.
Dated this 21st day of October 1896.
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.