Improvements in Gas and Water Supply Valves for Water Heaters.
Year: 1899

page_text: Date of Application, 13th Nov., 1899
Complete Specification Left, 13th Aug., 1900-Accepted, 20th Oct., 1900
PROVISIONAL SPECIFICATION.
Improvements in Gas and Water Supply Valves for Water Heaters.
I, HENRY LEWIS DOULTON, of The Lambeth Sanitary Engineering Works,
Lambeth, in the County of Surrey, Potter, do hereby declare the nature of this
invention to be as follows:-
-
The gas cock is formed by a diaphragm held to a suitable seating by a spring.
To the diaphragm is attached one end of a spindle the other end passes to the
exterior of the cock & on being depressed causes the valve to open. The water
valve is of the screw down pattern, the head being adjusted to act upon the spindle
of the gas cock which is opened by this means & is closed again by the spring
when the pressure is released.
In another form the gas & water valves are so arranged that on the water passing
to the heater it first acts upon a disc which in its turn controls a spindle connected
with the gas valve causing the latter to open or close according as the water is
flowing or not. By this means the gas would be lowered should the water fail
while the water valve is still open. To prevent steam passing from the heater to
valves after use & thus possibly acting upon the gas valve, a valve is fixed at the
point where the water enters the heater, or other convenient part, & is pressed open
when water is passing but closes should a force be applied in the opposite direction.
The usual method is adopted in each case for supplying a small light only until
the water valve is turned on.
101
Improvements in Gas and Water Supply Valves for Water Heaters.
I, HENRY LEWIS DOULTON, of The Lambeth Sanitary Engineering Works,
Lambeth, in the County of Surrey, Potter, 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 relates to gas and water valves for supplying water heaters and
has for its object the automatic closing of the gas valve on the water supply being
turned off.
The gas cock is formed by a diaphragm or like arrangement as A in Fig. 1 of
accompanying drawing, held to a suitable seating B by a spring C. To the
diaphragm A is attached one end of a spindle 1), the other end passes to the
exterior of the gas cock and on being depressed causes the gas cock to open. The
Price &d

page_text: water valve M is of the screw down pattern, the head E being adjusted to act
upon the spindle D of the gas cock causing it to open when the water valve is
opened. On the water valve M being closed the gas cock is also closed by the
action of spring 0.
In another form, Fig. 3, the gas and water valves are so arranged that the
water in passing to the heater acts upon a disc A', this disc A¹ communicates the
pressure through piston B' to spindle C which is connected with the gas valve N
causing the latter to open. On the cessation of the flow the several parts assume
their original positions and the gas cock is closed. By this means the gas would
be lowered should the supply of water fail while the water valve is still open.
For the further control of the gas and water supplies, valves F and G in Figure 1
and G and H¹ in Figure 3 may be introduced, the water valves having if desired
the heads covered as shewn that they may be regulated to allow the water to pass
at not more than a certain rate.
To prevent steam passing from the heater to the water valve after use and thus
possibly acting upon the disc A¹, a valve E' is fixed at the point where the water
enters the heater, or other convenient part and is pressed open when the water
is flowing but closes should force be applied in the opposite direction. The closing
movement may be helped by a spring F.
A small hole in the gas valve may be utilized for supplying sufficient gas to a
pilot light in the heater until the water is turned on.
Figures 2 and 4 are respectively front elevations of Figures 1 and 3.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is;-
1. The combination of a gas valve and a water valve so acting together that the
gas valve can only be opened as the water valve is opened. The closing of the
water valve allowing the gas valve to also close, substantially as described.
2. The combination of a gas valve and a water valve so acting together that the
gas valve is opened by the pressure of water after the water has passed through
the water valve and is closed again on the cessation of the flow substantially as
described.
3. Gas and water valves substantially as described and shown in drawings.
miial: 104 dan as At 1000