Improvements in Automatic Water Supply Regulators for Steam Boilers.
Year: 1891

page_text: Date of Application, 20th Apr., 1891
Complete Specification Left, 20th Jan., 1892-4ccepted, 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Automatic Water Supply Regulators for Steam
Boilers.
A communication from EDOUARD HENRY, of St. Denis (Seine), in the Republic
of France.
1. ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex.
M.I.M.E., do hereby declare the nature of this invention to be as follows:-
This invention relates to a device for automatically adjusting the water level in
steam boilers.
The device herein described is connected to a float by a link pivotted to the end
of the float-arm adapted to turn upon a permanent pivot or spindle parallel to the
level of the water contained in the boiler.
The body of the regulator is screwed into the boiler plate and has hollow spaces
formed within it for the passage of the water; also two screw-threaded plugs, two
couplings provided with internal screw-threads and forming joints with a water
inlet pipe an overflow pipe, and an orifice through which the water issues from the
regulating device and enters the boiler. It is further provided with the following
movable parts; A hollow valve, an ordinary valve a two armed lever a shaft or
spindle and a crank or lever arm with its pin.
The operation is as follows: The water-level in the boiler being below the
normal level the rod connecting the float-arm to the regulator being linked to the
crank is raised by reason of the position then occupied by the float-lever, and as
this crank is rigidly attached to the shaft or spindle of the lever which controls the
valves this lever will be inclined.
In thus being tilted the lever affords room for the valve of ordinary construction
to rise and allow the feed water to pass; while the other end of the said lever
bears upon the hollow valve and retains upon its seat, whereby the port provided
for the overflow water is closed.
While the hollow valve is in this position orifices in the wall of the hollow valve
are in a line with the port by which the feed water enters. Passing through this
port the water causes the other valve to rise, and then flows into the boiler passing
through the spaces provided for the purpose. As the supply of feed-water always
exceeds the amount converted into steam it will be understood that the water-level
will necessarily rise within the boiler and in so doing will raise the float.
When the normal level is exceeded the float rod will cause the crank-pin to
move down a proportionate distance. This will tilt the valve controlling lever so
that it takes up its position upon the valve of ordinary construction partly closing
this valve, while the other arm of the lever in rising will permit the hollow valve
to be forced up by the feed-water. In consequence of the rising of the hollow
valve another port will become open to the passage of the feed-water, and this
water will pass on into the overflow pipe. A portion of the feed-water from the
feed pipe will at the same time pass through the orifices in the hollow valve which
are not entirely closed and into the boiler where it will keep up a constant level.
By this device which may be arranged either outside or inside the boiler, the fecil-
water supply is regulated before the water reaches the boiler. The surplus water
flowing discharged through the overflow pipe need absorb no heat.
Dated this 20th day of April 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.

page_text: Improvements in Automatic Water Supply Regulators for Steam
Boilers.
A communication from EDOUARD HENRY, of St. Denis (Seine), in the Republic
of France.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., 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 a device for automatically adjusting the water level in
steam boilers.
The device herein described is connected to a float by a link pivotted to the end
of the float-arm adapted to turn upon a permanent pivot or spindle parallel to the
level of the water contained in the boiler.
In the accompanying drawings the same letters of reference designate like parts
in all figures.
Fig. is a cross-section of the device,
Fig. 2 a vertical section on line A A (Fig. 3).
Fig. 3 is a horizontal section on line B B' (Fig. 1).
Fig. 4 is a front view of the device.
Fig. 5 is a section on line 5-5 of Fig. 1 and
Fig. 6 is a section on the line 6-6 of Fig. 4 looking upwards.
The body a of the regulator is secured by means of its flange m to the boiler
plate and has the hollow spacesg and formed within it for the passage of the
water, also two screw-threaded plugs b, two couplings provided with internal
screw-threads and forming joints with a water inlet pipe i, an overflow pipe, and
an orifice o through which the water issues from the regulating device and enters
the boiler. It is further provided with the following movable parts.
A hollow valve e, an ordinary valve, a two-armed lever d, a shaft or spindle
and a crank or lever arm p with its pin q.
The operation is as follows,-
The water-level in the boiler being below the normal level the rod connecting
the float-arm to the regulator being linked to the crank s is raised by reason of the
position then occupied by the float-lever and as this crank is rigidly attached to
the shaft or spindle 7 of the lever d this lever will be inclined to the right (Fig. 2).
In thus being tilted the lever d affords room for the valve to rise and allow the
feed water to pass, while the other end of the said lever bears upon the hollow
valve e and retains it upon its seat whereby the port h (Fig. 2) provided for the
overflow water is closed.
While the hollow valve
to
is in this position the orifices in the wall of the
hollow valve e are in a line with the port g by which the feed water enters.
Passing through this port the water causes the other valve rise, and then
flows into the boiler passing through the space and the opening o.
As the supply
of feed water always exceeds the amount converted into steam it will be understood
that the water-level will necessarily rise within the boiler and in so doing will
raise the float.
When the normal level is exceeded the float rod will cause the crank pin to
move down a proportionate distance. This will tilt the valve controlling lever d
that it takes up its position upon the valve partly closing this valve while the
other arm of the lever in rising will permit the hollow valve e to be forced up by
the feed-water contained in the pipe i supplied by the pump. In consequence of
the rising of the hollow valve the port h will become open to the passage of the
feed water and this water will through pass on into the overflow pipe . A
portion of the feed-water from the feed pipe i will at the same time pass through

page_text: the orifices in the hollow valve e which are not entirely closed and into the boiler
where it will keep up a constant level.
By this device which may be arranged either outside or inside the boiler, the
feed-water supply is regulated before the water reaches the boiler. The surplus
water which is discharged through the overflow pipe need absorb no heat.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, I declare that what I claim is,
1. Apparatus for automatically controlling or regulating the water level in
steam boilers substantially as described and illustrated in the accompanying
drawings.
2. In apparatus for automatically regulating the supply of water to steam boilers
the combination with a float-operated lever such as d of two valves such as et
and substantially as and operating in the manner described and illustrated in
the accompanying drawings.
3. In apparatus for automatically regulating the supply of water to steam
boilers the combination of three chambers such as cg and two valves such et
and a lever such as d an inlet i outlet o and discharge or surplus outlet substan-
tially as described and illustrated in the accompanying drawings.
Dated this 20th day of January 1892.
ALFRED J. BOULT,
Chartered Patent Agent.