AN IMPROVED AUTOMATIC APPARATUS FOR REGULATING THE SUPPLY OF GAS TO A GAS FLAME, AND FOR LIGHTING AND EXTINGUISHING THE SAME
Year: 1882

page_text: LETTERS PATENT to William Cheyne of Briton Ferry in the county of
Glamorgan South Wales for an invention of AN IMPROVED AUTOMATIC
APPARATUS FOR REGULATING THE SUPPLY OF GAS TO A GAS FLAME, AND
FOR LIGHTING AND EXTINGUISHING THE SAME
PROVISIONAL SPECIFICATION left by the said William Cheyne at the Office
of the Commissioners of Patents on the 11th July 1882.
WILLIAM CHEYNE of Briton Ferry in the County of Glamorgan, South Wales
AN IMPROVED AUTOMATIC APPARATUS FOR REGULATING THE SUPPLY OF GAS TO A
GAS FLAME, AND FOR LIGHTING AND EXTINGUISHING THE SAME
The object of my invention is to provide an apparatus that can adjust itself to
the varying pressures of gas in, the mains, and automatically light and extinguish
the gas flame. With this object I form a chamber below the gas burner, in which
is placed a flexible diaphragm. On the centre of this diaphragm is secured a hollow
conical valve. There are two or more small holes round the base and a small hole
in the apex of this valve. The valve fits in a seat and closes the passage from the
chamber to the burner in such a manner that while the holes round the base open
into the space in the chamber above the diaphragm, the hole in the apex is in free
communication with the burner. The diaphragm is connected by a rod with a
lever pivotted on the bottom of the chamber, which lever is weighted as required.
The gas supply pipe is led to the upper part of the chamber above the diaphragm,
and when the pressure is reduced in the mains, or the gas flame is not required, a
very small amount of gas enters the chamber and passes through the small holes in
the valve and maintains an extremely small flame. Then when the pressure in the
mains increases or the flame is required, this pressure depresses the diaphragm,
opens the valve and allows a larger supply of gas to the burner maintaining a
large flame. The exact amount of such supply is regulated by the weight on the
lever, which is readily adjustable. This apparatus therefore can be so adjusted
as to work in correspondence and unison with the varying pressures in the gas
mains.

page_text: =
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Cheyne in the Great Seal Patent Office on the 10th January
1883.
WILLIAM CHEYNE of Briton Ferry in the County of Glamorgan South Wales
AN IMPROVED AUTOMATIC APPARATUS FOR REGULATING THE SUPPLY OF GAS TO A 5
GAS FLAME, AND FOR LIGHTING AND EXTINGUISHING THE SAME
The object of my invention is to provide an apparatus that can adjust itself to
the varying pressures of gas in the mains and automatically light and extinguish
the gas flame.
In order to explain my invention I refer to the accompanying drawing shewing
my apparatus as applied to a single burner.
Figure 1 is an elevation of a burner fitted with my regulating apparatus which
is shewn partly in section
Figure 2 is a plan of the regulating chamber
Below the gas burner B I form a chamber A which may be of any convenient
shape and size in which chamber is secured the flexible diaphragm C. On the
centre of this diaphragm C is fixed a hollow conical valve D round the base of
which are two or more small holes E which communicate with another small hole F
in the apex of the said conical valve D. This valve D fits in a seat made therefor
in the wall of the chamber A and closes the passage G to the burner through the
said wall in such a manner that while the holes E in the said valve open into the
space in the chamber A above the diaphragm C the hole F in the said valve is in
free communication with the burner B through the said passage G. The
diaphragm C is connected by the rod H with the lever I which is pivotted on the
bottom or reverse side of the chamber A and on this lever I is placed a movable
and adjustable weight K. The gas supply pipe L delivers the gas into the
chamber A above the before mentioned diaphragm C through the passage M. The
action therefore of this apparatus is as follows. When the pressure of gas is
reduced in the mains or when the gas flame is not required there is only this said
small pressure in the chamber A above the diaphragm C. The weight K then keeps
the conical valve D tight against its seat and a very small quantity of gas passes
through the holes E and F in the said valve D which maintains an extremely
minute flame in the burner B. On the other hand when the pressure of gas in the
mains is increased or when the gas flame is required the pressure of the gas in the
chamber* A on the diaphragm C depresses the said diaphragm C thereby drawing
the valve D away from its seat and opening the passage G and allowing a larger
supply of gas to pass to the burner B which therefore maintains a larger flame in
the said burner. As the weight K on the lever I which governs the action of
the diaphragm C is adjustable the exact amount of gas which is allowed to pass
the valve D at any given pressure in the mains can easily be regulated.
This apparatus therefore can be so adjusted as to work in correspondence and
unison with the varying pressures in the gas mains. It is obvious also that this
apparatus is as suitable for a number or a combination of gas flames as for a single
flame and that one of my regulators as herein before described can easily be
• arranged to govern a large number of gas flames.
Having thus particularly described and clearly ascertained my invention. and in
what manner the same is to be performed I would have it understood that I do
not limit myself to the precise details of construction or exact shapes of the various
parts of my apparatus as shown in the drawing for the same may be altered in

page_text: accordance with the requirements of each apparatus without departing from my
invention but what I do claim as my invention which is protected by the herein-
before in part recited Letters Patent is the automatic apparatus for regulating
the supply of gas to a gas flame and for lighting and extinguishing the same
substantially as herein before described and set forth.
In witness whereof I the said William Cheyne have hereunto set my hand and
seal this tenth day of January in the year of our Lord one thousand eight
hundred and eighty three.
WILLIAM CHEYNE (L.S.)