Improvements in Boilers used for Maintaining a Supply of Boiling Water under Light Pressure.
Year: 1890

page_text: Date of Application, 19th Mar., 1890
Complete Specification Left, 17th Dec., 1890-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATIUA.
Improvements in Boilers used for Maintaining a Supply of Boiling
Water under Light Pressure.
I, CHARLES JOHN JONES, of 24, Eastcheap, in the City of London, Builder,
do hereby declare the nature of this invention to be as follows:-
My improvements relate to boilers used for maintaining a supply of boiling water
under light pressure such as are described in the Specification of a former Patent
granted to me No. 13952 in the year 1884.
The boiler itself I form of a vertical cylinder closed at the top and having rising
up into it at the bottom a cylinder of smaller diameter having a dome shaped top
below the water level and a flue rising up from the dome through the top of the
boiler.
The inner cylinder at the bottom I form with a flange extending outwards at
right angles from it-and the outer part of this flange secure by bolts to a similar
flange extending outwards from the outer cylinder.
1 also form the inner cylinder with a number of tubes passing across its interior
as described in the Specification above mentioned. The lowest of these tubes 1
place at some distance above the bottom of the cylinder. By doing this and by
keeping the lower part of the sides of the inner cylinder parallel with the sides of
the outer cylinder large space is obtained at the bottom of the boiler below the
tubes. By thus forming the boiler with large space below the tubes the boiler will
remain in proper working order for a great length of time.
The boiler as heretofore heat by a gas burner placed below the bottom of the
inner cylinder. This I now form of three or it might be other number of concentric
rings held together by short radial tubes passing across the spaces between the
rings. The outermost ring I form with a nozzle extending outwards from it to
which the gas supply pipe is to be secured. Gas entering by this nozzle will pass
through the short radial connecting tubes to all the rings. Each ring has standing
up from it a number of ordinary bats wing burners and these are set so that the
flat sheets of flame which they produce are at right angles to radial lines passing
from the centre of the burner.
For controlling the supply of gas to the burner I employ a valve which when
the pressure in the boiler has risen to the required degree is caused to shut off the
supply of gas by the pressure in the boiler acting on a diaphragm.
The valve I form of a chamber covered over at the top by a flexible diaphragm―
above this and separated from it by a metal ring is a second flexible diaphragm. The
edges of the two diaphragms and the metal ring are clamped between a flange which
surrounds the top of the chamber and another flange projecting from a hollow
chamber to which is connected a pipe which is led out from the boiler below the
water level. There is a filling block or distance piece between the two discs so
that when the upper one is depressed the other is depressed with it. Small holes
are formed through the ring which separates the rings so that if the upper disc
should become leaky any water escaping through it may pass away and not enter
the gas supply chamber. The flexible diaphragm which covers over the gas supply
chamber carries on its under side a flat disc valve which when the diaphragm is
pressed downwards is made to come against and close the top of a pipe which rises
up through the bottom of the gas supply chamber.
This pipe is continued for a distance downwards and the valve has a stem
descending from it which is acted upon by a coiled spring contained in the lower
part of the pipe. The lower end of the coiled spring rests on a disc which can be
raised or lowered by a screw screwed through the bottom of the pipe so that by

page_text: turning the screw the spring may be more or less compressed and the valve regulated
to shut off gas at any desired pressure within the boiler.
A. small aperture is left open through the tube which rises up into the gas supply
chamber so that all gas supply is not entirely cut off but enough is left to keep the
burners alight. The amount of gas passing through this aperture can be controlled
by causing the point of a screw screwed through the side of the chamber to more or
less close it.
The boiler as heretofore keep supplied with water from a cistern at a sufficient
elevation to supply the water under somewhat higher pressure than that maintained
in the boiler. To control the supply to the boiler I use a valve which when the
water has risen to the required height within the boiler is by the action of a float
caused to rise and close a small orifice at the end of the water supply pipe and so
shut off the supply of water. Preferably I make a small rod which rises up from
the float to pass through a small hole in the top of the boiler and attach the valve
to the top of the rod. To the top of the boiler is secured a small cylindrical casing
which surrounds the valve. The top of the casing is closed by a cover which has
projecting downwards from it a small nozzle through which water is to be supplied
and on the top a screw connection to which the water supply pipe can be attached.
I use an oblong upright float the sides and bottom of which are in one piece of
metal so that the solder joint by which the cover of the float is secured to the
lower part is always well above the water level so that even if the joint should
become somewhat defective the float is not liable to become filled with water.
Dated this 19th day of March 1890.
CHARLES J. JONES.
COMPLETE SPECIFICATION.
Improvements in Boilers used for Maintaining a Supply of Boiling
Water under Light Pressure.
I, CHARLES JOHN JONES, of 24, Eastcheap, in the City of London, Builder, 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 :—
My improvements relate to boilers used for maintaining a supply of boiling water
under light pressure such as are described in the Specification of a former Patent
granted to me No. 13952 in the year 1884.
The boiler itself I form of a vertical cylinder closed at the top and having rising
up into it at the bottom a cylinder of smaller diameter having a dome shaped top
below the water level and a fue rising up from the dome through the top of the
boiler.
The inner cylinder at the bottom I form with a flange extending outwards at
right angles from it and the outer part of this flange I secure by bolts to a similar
flange extending outwards from the outer cylinder.
I also form the inner cylinder with a number of tubes passing across its interior
as described in the Specification above mentioned. The lowest of these tubes I
place at some distance above the bottom of the cylinder. By doing this and by
keeping the lower part of the sides of the inner cylinder parallel with the sides of
the outer cylinder large space is obtained at the bottom of the boiler below the
tubes. By thus forming the boiler with large space below the tubes the boiler will
remain in proper working order for a great length of time.
The boiler as heretofore heat by a gas burner placed below the bottom of the
inner cylinder. This I now form of three or it might be other number of concentric
rings held together by short radial tubes passing across the spaces between the
rings. The outermost ring form with a nozzle extending outwards from it to which
the gas supply pipe is to be secured. Gas entering by this nozzle will pass through
the short radial connecting tubes to all the rings. Each ring has standing up from

page_text: it a number of ordinary bats wing burners and these are set so that the flat sheets
of flame which they produce are at right angles to radial lines passing from the
centre of the burner.
For controlling the supply of gas to the burner I employ as described in the
Specification of my former Patent a valve which when the pressure in the boiler
has risen to the required degree is caused to shut off the supply of gas by the
pressure in the boiler acting on a diaphragm.
The valve I now form of a chamber covered over at the top by a flexible
diaphragm above this and separated from it by a metal ring is a second flexible
diaphragm. The edges of the two diaphragms and the metal ring are clamped
between a flange which surrounds the top of the chamber and another flange pro-
jecting from a hollow chamber to which is connected a pipe which is led out from
the boiler below the water level. There is a filling block or distance piece between
the two discs so that when the upper one is depressed the other is depressed with it.
Small holes are formed through the ring which separates the rings so that if the
upper disc should become leaky any water escaping through it may pass away and
not enter the gas supply chamber. The flexible diaphragm which covers over the
gas supply chamber carries on its under side a flat disc valve which when the
diaphragm is pressed downwards is made to come against and close the top of
a pipe which rises up through the bottom of the gas supply chamber.
stem
This pipe is continued for a distance downwards and the valve has a
descending from it which is acted upon by a coiled spring contained in the lower
part of the pipe. The lower end of the coiled spring rests on a disc which can be
raised or lowered by a screw screwed through the bottom of the pipe so that by
turning the screw the spring may be more or less compressed and the valve regulated
to shut off gas at any desired pressure within the boiler.
A. small aperture is left open through the tube which rises up into the gas supply
chamber so that all gas supply is not entirely cut off but enough is left to keep the
burners alight. The amount of gas passing through this aperture can be controlled
by causing the point of a screw screwed through the side of the chamber to more
or less close it.
The boiler as heretofore keep supplied with water from a cistern at a suflicient
elevation to supply the water under somewhat higher pressure than that maintained
in the boiler. To control the supply to the boiler I use a valve which when the
water has risen to the required height within the boiler is by the action of a float
caused to rise and close a small orifice at the end of the water supply pipe and so
shut off the supply of water. Preferably 1 make a small rod which rises up from
the float to pass through a small hole in the top of the boiler and attach the valve
to the top of the rod. To the top of the boiler is secured a small cylindrical casing
which surrounds the valve. The top of the casing is closed by a cover which has
projecting downwards from it a small nozzle through which water is to be supplied
and on the top a screw connection to which the water supply pipe can be attached.
use an oblong upright float the sides and bottom of which are in one piece of
metal so that the solder joint by which the cover of the float is secured to the lower
part is always well above the water level so that even if the joint should become
somewhat defective the float is not liable to become filled with water.
Figure 1 of the drawing annexed is a vertical section of a boiler constructed as
above described.
Figure 2 is a vertical section on a larger scale of the gas valve.
Figure 3 is a plan of the gas burner.
A is the vertical shell of the boiler with the top permanently secured to the sides
B is the
and with an outwardly projecting flange A' formed around it at the bottom.
immer cylinder with dome top and outwardly projecting flange B at the bottom.
Care bolts for securing together the flanges A B B is a flue rising up from the
top of the dome and passing through the top of the outer shell A. 133 is an outer
continuation of the flue 132. Bare tubes passing across the interior of the inner
evlinder B.

page_text: As will be seen the lowest of these tubes is some distance above the bottom of
the inner cylinder so that below it there is a comparatively deep space between the
exterior of the inner cylinder and the cylindrical outer shell.
D is the gas burner formed as above described of concentric hollow rings with a
number of ordinary bats wing burners D' rising up from them.
The construction of valve which I now use for controlling the supply of gas to
the burner is shewn clearly in Figure 2. E is a chamber covered at the top by a
flexible diaphragm E, E is a second diaphragm separated from it by a ring E³.
Fare screws by which a cover G is drawn towards the chamber E so as to clamp
the outer edges of the diaphragms and the ring E³ between them. E is a hole
formed through the ring in order that if the upper diaphragm becomes defective
any water passing through it may escape outwards and not subject the lower
diaphragm to pressure. Gis a pipe passing from the top of the cover G to the
water space of the boiler. H is a filling block between the two diaphragms and
1a valve fixed to the underside of the lower diaphragm and which when this
diaphragm is pressed downwards comes against and closes the top of a tube which
rises up into the gas chamber E. The tube is continued downwards for a distance and
has within it a coiled spring K.
The upper end of the spring bears against a disc K' and presses it against a
rod H' which descends from the block H and so tends to open the gas supply valve-
the lower end of the spring rests on the disc K² which can be raised or lowered by
the screw K³ to regulate the upward pressure of the spring against the disc K'.
L is a tube extending outwards froin the gas chamber E to which the gas supply
pipe is to be connected. L is a tube extending outwards from the tube
to which
a pipe passing to the burner is to be compled." M is a screw screwed through the
side of the chamber E and pointed at its end so that it may be made to more or less
close a small hole which is formed through the side of the upper portion of the gas
delivery tube which rises up into the chamber E so as to regulate the amount of
gas which shall still pass to the burner when the valve I is closed.
N is the valve for controlling the supply of water to the boiler. O is a float
with a stem rising up from it passing through the top of the boiler and carrying the
valve N. P is a casing fixed to the top of the boiler and surrounding the valve-
Pis the cover of the casing having a nozzle descending from it against which the
valve N closes and a short tube rising up from it to which the water supply
pipe is to be coupled.
As shewn in Figure 1 the float is an upright oblong float the sides and bottom of
which are in one piece of metal so that the solder joint by which the cover is secured
to the lower part of the float is well above the water level. The stem which rises
up from the float and carries the valve N may also if desired be made to carry a
deflector R to prevent the cold water entering the boiler from falling on to the float
so that the float is not liable to be repeatedly cooled whenever water is passing into
the boiler. S is a safety valve.
Having now particularly described and ascertained the nature of my said
invention, and in what maimer the same is to be performed, I declare that what I
claim is
1. The construction substantially as hereinbefore described of boilers used for
maintaining a supply of boiling water under light pressure.
2. A. boiler composed of a vertical cylinder closed at the top and having an
outwardly projecting flange around it at the bottom and of an inner cylinder formed
with dome top rising up into it and flue passing off from the top of the dome and
with an outwardly projecting flange around it at the bottom which is bolted to the
Hange at the bottom of the outer cylinder substantially as described.
3. A boiler having a vertical cylindrical outer shell, a cylindrical inner shell
rising up into it and tubes passing acros this inner shell with a comparatively deep
space left below the lowest of the tubes between the inner and outer cylindrical
shells substantially as described.

page_text: 4. A gas burner constructed substantially as herein described for heating steam
boilers.
5. The gas valve for controlling the supply of gas to a gas burner used for
heating a steam boiler, such gas valve being composed of two flexible discs one
above the other, the lower one carrying a valve for cutting off the supply of gas
and the upper one subjected to pressure of water from the boiler and an outlet from
the space between the two flexible discs to allow any water which might pass into
this space if the upper disc became defective to pass away to the outside.
6. The construction substantially in the manner herein described of gas valves
for controlling the supply of gas to a gas burner used for heating a steam boiler.
7. Controlling the supply of water to steam boilers that are to be maintained
under a light pressure, by a deep oblong float which has its sides and bottom formed
all in one piece and carries a cut off water supply valve by a stem which rises up
from a lid soldered on to its top.
8. The valve apparatus constructed substantially in the manner herein before
described for controlling the supply of water to boilers which are to be maintained
under light pressure.
Dated thi 11th of Desemba 1000