Improvements relating to Burners employed in Incandescent Gas- lighting.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Burners employed in Incandescent Gas-
lighting.
I, FREDERICK GEORGE BARTLETT, of 4, Elton Road, Bishopston, Bristol,
Plumber, do hereby declare the nature of this invention to be as follows:-
This invention which relates to burners employed in incandescent gas-lighting,
is an improvement upon an invention for which Letters Patent were granted to
me dated the 22nd of October, 1896, No. 23454, according to which said former
invention incandescent gas-lighting over a series of burners is controlled by one
by-pass main cock or tap; each burner being provided with a pilot light kept
permanently alight.
This invention has for its object to govern the consumption of gas in such
burners, as hereinafter set forth.
According to this invention, two cup-shaped valves are contained in the
chamber below the nipple and are free to rise and fall vertically in the slotted
sleeve with which such chamber is fitted.
In the normal condition, that is to say, when gas is not passing to the burner,
the two valves are at their lowest limit of travel and one rests closely upon the
other; the division between them being gas-tight. The lower valve is heavier
than the upper; its weight being determined by the pressure at which it is
intended to act. It has an aperture centrally situated at its lower end. This
aperture has a gauze extending over it to obviate noise in the passage of gas.
When gas is admitted to the supply pipe which is connected to the valve
chamber, the upper valve rises from its seating upon the lower valve under the
pressure, to the upper limit of its travel, and the gas passing through the
aperture in the lower valve is supplied through the slots or ports in the sleeve
to the burner. On a further supply of sufficient pressure being admitted by the
supply pipe, the lower valve rises from its seat and also reaches its limit of
travel by coming in contact with the end of the upper valve. The communication
by the central aperture in the lower valve is again closed and the passage of
the gas to the slots or ports is permitted to the maximum extent for which the
valves are designed.
The upper valve bears such relation in respect of length to the lower valve
that if the pressure of gas exceeds the maximum for which the valves are designed,
the consumption is maintained at an approximately uniform rate owing the
degree in which the ports or slots in the sleeves are blocked by the range of
travel permitted by the upper valve to the lower one.
The valves vary in construction according to, the maximum pressure of the
gas to be admitted to the burners they control.
Dated this 27th day of May 1897.

page_text: Improvements relating to Burners employed in 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 employed in incandescent gas-lighting,
is a development from a former invention in respect of which Letters Patent
were granted to me, namely, No. 23454 of 1896, according to which said former
invention a series of burners can be controlled by a by-pass main cock or tap
common to the series each burner being provided with the usual pilot. light.
This present invention has for its object to govern approximately the con-
sumption of gas supplied to incandescent gas-lighting burners under, varying
pressures. According to this invention two cup-shaped valves are contained
in the chamber below the nipple or burner-head and are free to rise and fall in
'the slotted sleeve with which the said chamber is fitted.
When gas is not passing to the burner, the two valves are at. their lowest limit
of travel, and one rests closely upon the other so that no gas can pass, between
them. The lower valve is heavier than the upper. The weight of each valve
is determined by the pressure at which it is intended the valves shall act.
Through the bottom of the lower valve is an aperture.
When a sufficient pressure of gas is admitted to the gas supply pipe. which is
connected to the valve chamber, the upper valve rises to the upper limit of its
travel; leaving the lower valve at the bottom of the chamber. The gas passing
through the aperture into the space between the two valves passes to the burner
through the slots in the sleeve as in my former Patent No. 23454 of 1890. If
a sufficient further pressure of gas be admitted from the supply pipe, the lower
valve is raised from its seat into contact with the previously raised valve.
Communication by the aperture in the lower valve is accordingly again closed
and the passage of gas through the slots in the sleeve and thence to the burner
is permitted to the maximum extent which the valves are designed to allow.
By this arrangement and adjustment of valves the consumption of gas is main-
tained at an approximately uniform rate owing to the extent to which the slots
in the sleeve are blocked by the range of travel allowed to the lower valve.
Referring to the accompanying drawings, Fig. 1 represents in vertical section
a valve chamber and valves as arranged for governing consumption of gas in
incandescent gas-light burners in accordance with this invention. Fig. is a
plan. The barrel or chamber a, to which gas is conducted by the pipe 6, is fitted
with a sleeve composed of two tubes c, c¹. The tube c is slotted from the top
downwards through a part of its length only, as seen more particularly at Fig. 3
which represents a detached sectional view of the sleeve. The 'sleeve c, c¹ is
practically the same as 'that employed in my former invention above referred to
except that the slots are not extended down so far. Within the sleeve c, c¹ are
contained two cup-shaped valves d and e made in brass, gun-metal or other suitable
metal or material or the lower valve e has an aperture e extending through the
bottom. In the seat of the valve e is an aperture a¹, as in my said former Patent,
for admitting gas to the valve chamber. The valve e is heavier than the valve d.
The weight of the valve e is determined by the pressure of gas at which it is
intended the valve shall act. A piece of wire gauze f laid in the valve e tends
"

page_text: to prevent the gas from making a hissing or other sound when passing through the
aperture e¹ in the valve.
valve e.
When the supply of gas to the burner is cut off, the valve e is down on its seat
and the valve & rests upon the valve e as shown at Fig. 1. At Fig. 4 the valves
are represented in elevation. When gas is turned on to supply the burner, the
valve d is lifted off the valve e by the gas entering the aperture e¹ of the lower
The range of upward movement of the valve e is limited by the wire
gauze disc for by other suitable stop. When the valve d is raised the gas
passes through the slots 2 to the nozzle g and thence to the burner. This position
is shown at Fig. 5. If a sufficient further pressure of gas be admitted from the
supply pipe, the lower valve e is raised from its seat into contact with the
previously raised valve d. This position is shown at Fig. 6. When the valve e
is forced into contact with the valve d, communication by the aperture e¹ in the
valve e is again closed, and the passage of gas through the slots 2, and thence
to the burner, is permitted to the maximum extent for which the valves are
designed.
A wire gauze disc f is placed over the mouth of the supply pipe band, like
the disc f¹, serves to exclude dirt.
at
As before stated, the weight of the lower valve is adjusted to the pressure
which it is intended to rise and the consumption of gas is maintained at an
approximately uniform rate owing to the degree in which the slots c² of the
sleeve c, c¹ are blocked by the range of travel permitted by the upper valve d
to the lower valve e. The valves vary in dimension according to the maximum
pressure of gas to be admitted to the burners they control.
The novel feature in this invention consists only in the regulating valves d and e,
or their equivalents, devised and arranged to act as above set forth.
Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, 1 declare that what
I claim is:-
Means for governing the consumption of gas at varying pressures in incan-
descent gas-lighting burners; said means consisting of a pair of cup-shaped
valves such as d and e (with aperture e¹), or the equivalents of such valves, so
constructed, arranged and disposed in relation to one another and below the
burner, and of such relative weights that when the pressure of gas being supplied
to the burner exceeds a predetermined degree, the lower valve rises from its
seat to the upper and previously-raised valve, and thus allows gas to be fed to
the burner through the slotted sleeve c, c¹, or the equivalent thereof, to a maximum
extent in respect of which the valves are designed, substantially as hereinbefore
described with reference to the accompanying sheet of illustrative drawings.
Dated this 24th day of February 1898.
NICHOLAS WATTS,
Chartered Patent Agent, Bristol.