Improved Means of Automatically Controlling the Feed-water Apparatus of Steam Boilers.
Year: 1889

page_text: ^^
Date of Application, 27th May, 1889
Complete Specification Left, 25th Feb., 1890-Accepted, 5th Apr., 1890
PROVISIONAL SPECIFICATION.
Improved Means of Automatically Controlling the Feed-water
Apparatus of Steam Boilers.
I GEORGES LOUIS JOSEPH PORION of Saint André-lez-Lille, Nord, France,
Distiller do hereby declare the nature of this invention to be as follows:-
My invention has for its object to render the operation of the feed pump or other
apparatus for supplying feed water to a steam boiler automatic and to so control it
as to regulate the feed proportionately to the lowering of the level of the water in
the boiler.
The invention consists essentially in utilizing the rise and fall of a float within the
boiler, not for regulating the passage of the feed water as usual when. a float is used,
but for the purpose of controlling and regulating the supply of steam from the
boiler for operating the feed apparatus.
In order that the invention may be more readily understood I have illustrated in
the accompanying drawing an example of this improved system of automatic feed.
a is the boiler and b a float attached to a rod e sliding in guides g and terminating in
a conical valve d that fits up against a seat formed in a short tube e fixed upon the
boiler. The tube e communicates with the steam space of the boiler and with a pipe f
for conveying steam to the feed pump or other apparatus.
When the water level in the boiler falls, the float descends and opens valve d and
permits a supply of steam to the feed apparatus which is thereby put in operation.
As the water rises in the boiler valve d gradually closes until the normal water level
is reached when the action of the feed apparatus becomes entirely arrested by the
closing of valve d. It will be evident that the mechanical arrangements by which
the float controls. the supply of steam to the feed water apparatus may be infinitely
varied without in any way departing from my invention. For example instead of a
conical valve, a slide valve, cock or other contrivance may be employed. The feed
water apparatus itself forms no part of this invention. It may be of any suitable
kind, such as a direct acting or other steam pump, injector, donkey engine &c.
G. L. J. PORION.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION..
Improved Means of Automatically Controlling the Feed-water
Apparatus of Steam Boilers.
I, GEORGES LOUIS JOSEPH PORION of Saint André-lez-Lille, Nord, France, Distiller,
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 Invention has for its object to provide an apparatus whereby the operation of
supplying feed water to a steam boiler is rendered automatic and continuous and
which is so regulated as to supply to the feed apparatus a variable quantity of steam
from the boiler proportionate to the fall of the level of the water therein.
The Invention consists essentially in utilizing the rise and fall of a float within
the boiler, not for regulating the passage of the feed water, as usual when a float is
used, but for the purpose of controlling and regulating the supply of steam from the
boiler for operating the feed apparatus.

page_text: In order that the invention may be more readily understood, I have illustrate 1 this
improved system of automatic feed in the accompanying drawing in which figure 1
represents a vertical section of the apparatus attached to a steam boiler. Figure 2
is an elevation, and figure 3 a plan, of the apparatus. Figure 4 is a partial section
taken on line 1-2, figure 3. The same letters of reference refer to like parts in the
several figures.
a is a float, placed within the boiler b, which is always at the level of the water
therein. The float is attached to the lower end of a rod c sliding in guides d which
give passage to the steam. The rod c is connected at its upper end to a lever e to the
opposite end of which is pivoted a cylindrical plug valve which is received in a
conical seat g. The apparatus is enclosed in a cast iron column surmounted by a
casing to which the steam has access. When the water level in the boiler rises,
the valve is brought down in the conical seat g and reduces the steam passage, and
consequently the rate of feed; the contrary effect being produced on the fall of the
water level.
In practice, the feed is not only automatically controlled, but may be rendered
continuous, by so adjusting the parts that the valve will be at the middle of the
height of the cone when the water is at its normal level in the boiler, so that, in
working, the valve will only rise or fall to a relatively slight extent; any movement
in one or other direction tending to instantly bring the water to the normal level,
which is thereby rendered sensibly constant provided that the feed apparatus is
sufficiently powerful and in proper working order.
It will be evident that the mechanical arrangements, by which the float controls the
supply of steam to the feed water apparatus, may be varied without in any way
departing from my invention.
The feed water apparatus itself forms no part of this invention. It may be of any
suitable kind, such as a direct-acting, or other, steam pump, injector, donkey-
engine, etc.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
The herein-described apparatus for ensuring an automatic and continuous supply of
feed water to steam boilers, consisting essentially of a plug valve received in a conical
seat and attached to a float, substantially as herein described.
Dated this 20th day of cruary 1.
G. L. J. PORION.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents: