IMPROVEMENTS IN APPARATUS FOR FEEDING STEAM BOILERS AND OTHER RESERVOIRS FOR LIQUID, AND FOR REGULATING THE LEVEL THEREIN
Year: 1864

page_text: LETTERS PATENT to Louis Valant, of Paris, in the Empire of France,
Civil Engineer, for the Invention of "IMPROVEMENTS IN APPARATUS FOR
FEEDING STEAM BOILERS AND OTHER RESERVOIRS FOR LIQUID, AND FOR
REGULATING THE LEVEL THEREIN."-Partly a communication from Paul
Valant and François Ternois, residing at Imphy, in the Empire of
France, Engineers.
Sealed the 4th April 1865, and dated the 24th November 1864.
PROVISIONAL SPECIFICATION left by the said Louis Valant at the.
Office of the Commissioners of Patents, with his Petition, on the 24th
November 1864.
I, LOUIS VALANT, of Paris, in the Empire of France, Civil Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS FOR FEEDING STEAM BOILERS AND OTHER RESERVOIRS FOR LIQUID, AND
FOR REGULATING THE LEVEL THEREIN," to be as follows:-
This apparatus consists of an arrangement of valves and levers acted upon
by a float inside the boiler or reservoir, and gives passage to liquid through it
into the boiler or reservoir, so as to feed the same, and maintain the liquid
therein at any desired level.
The accompanying Drawings fully explain this Invention.
Sheet 1 shows the apparatus fitted to a vertical boiler or réservoir. S. is a
valve for allowing passage to water or other liquid to the Boiler or réservoir R;

page_text: S¹ is another valve, preventing liquid returning from the boiler; L is a lever,
one end of which is connected to a float F; this lever communicates the
motion imparted to it by the float to a shaft A, upon which there are one or
several excentrics connected by their collars to the rod T, which imparts a
rectilineal to-and-fro motion under the impulse given by the float to the
valves S. Although I have shewn excentrics in the Drawing, I do not limit
myself thereto.
The principle of my apparatus is based upon the following equation:-
F being the force which moves the float consequent upon the power exerted by
the liquid in the reservoir;. P being the power which acts upon the valve S;
Y the distance from the direction of the force to the axis of the shaft A;
X the distance from the axis of the rod of the valve S to the axis of the
shaft A.
PXX FxY.
The force F, the value of which is,
F=Px
may be made as great as desired, the ratio being variable at will, according
to the conditions of pressure and volume of liquid to be introduced into the
reservoir under which the apparatus is to be worked.
Sheet 2 shows my apparatus connected to a horizontal boiler or reservoir,
and with a cam-motion substituted for that from excentrics, as shewn and
described with reference to Sheet 1. Parts corresponding to those in Sheet 1
are marked with similar letters.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Louis Valant in the Great Seal Patent Office on the 24th
May 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
VALANT, of Paris, in the Empire of France, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of November, in the year of
our Lord One thousand eight hundred and sixty-four, in the twenty-eighth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Louis Valant, Her special licence that I, the said
Louis Valant, my executors, administrators, and assigns, or such, others as I,

page_text: the said Louis Valent, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN APPARATUS FOR FEEDING STEAM BOILERS AND OTHER RESERVOIRS FOR
LIQUID, AND FOR REGULATING THE LEVEL THEREIN," (partly communicated to me
by Paul Valant and François Ternois, persons resident at Imphy, in the
Empire of France, Engineers, and partly my own Invention,) upon the con-
dition (amongst others) that I, the said Louis Valant, my executors or
administrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Louis Valant, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the fol-
lowing statement thereof, reference being had to the Drawing hereunto
annexed, that is to say:-
This apparatus consists of an arrangement of valves and levers acted upon
by a float inside the boiler or reservoir, and gives passage to liquid through it
into the boiler or reservoir, so as to feed the same, and maintain the liquid
therein at any desired level.
The accompanying Drawings fully explain this Invention.
Figure 1 shews in sectional elevation the apparatus fitted to a vertical
boiler or reservoir; Figure 2 is a sectional plan, and Figuro 3 an end view.
S is a valve for allowing passage to water or other liquid to the boiler or
reservoir R; S¹ is another valve preventing liquid returning from the boiler;
L is a lever, one end of which is connected to a float F. This lever com-
municates the motion imparted to it by the float to a shaft A, upon which
there are one or several eccentrics connected by their collars to the rod T,
which imparts a rectilineal to-and-fro motion under the impulse given by the
float to the valve S. Although I have shewn excentrics in the Drawing, I do
not limit myself thereto.
The principle of my apparatus is based upon the following equation :-
F being the force which moves the float consequent upon the power exerted
by the liquid in the reservoir; P being the power which acts upon the

page_text: valve S; Y, the distance from the direction of the force to the axis of the
shaft A; X, the distance from the axis of the rod of the valve S to the axis
of the shaft A.
may be made as great as desired, the ratio being variable at will, according
to the conditions of pressure and volume of liquid to be introduced into the
reservoir under which the apparatus is to be worked.
Figures 4 and 5 are respectively a vertical section and a horizontal section
shewing my apparatus connected to a horizontal boiler or reservoir, and with
a cam motion substituted for that from eccentrics, as shewn and described
with reference to Figures 1, 2, and 3. Parts corresponding to those in
Figures 1, 2, and 3, are marked with similar letters.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim, constructing
apparatus for feeding steam boilers and other reservoirs for liquid, and for
regulating the level therein, substantially as herein-before described and
illustrated in the accompanying Drawings.
In witness whereof, I, the said Louis Valant, have hereunto set my
hand and seal, this Seventeenth day of May, One thousand eight
hundred and sixty-five.
LOUIS VALANT. (L.S.)