AN APPARATUS INDICATING THE WORK OF PUMPS
Year: 1858

page_text: FOR
LETTERS PATENT to Julien François Belleville, of Paris, in the French
Empire, Civil Engineer, for the Invention of "AN APPARATUS
INDICATING THE WORK OF PUMPS."
Sealed the 23rd November 1858, and dated the 25th May 1858.
PROVISIONAL SPECIFICATION left by the said Julien François Belleville
at the Office of the Commissioners of Patents, with his Petition, on the
25th May 1858.
I, JULIEN FRANÇOIS BELLEVILLE, of Paris, in the French Empire, Civil
Engineer, do hereby declare the nature of the said Invention for "Ax
APPARATUS FOR INDICATING THE WORK OF PUMPS," to be as follows:-
This Invention consists in leading from the suction pipe of suction pumps or
from the eduction pipe of force pumps, or from both, a pipe open to the
suction or eduction pipe at one end, and provided at the other with an
indicator, acted upon by the pulsations of the liquid through a flexible
diaphragm or otherwise, and shewing upon a dial the force and frequency of
the pulsations.
I sometimes fix a stop-cock in the indicator tube: I do not limit myself to
any form of indicator, as all descriptions of manometers and vacuum gauges
will answer for the purpose of my Invention, and especially those known as
metallic manometers; it is essential, however, that some such indicator be used
as will shew on the outside the effect of the pulsations in the pipe. Again,
[Price 8d.1

page_text: the pulsations may be made to act upon the indicator through any arrangements
known in manometers, such as a flexible diaphragm fitted on or in the indicator
pipe communicating motion through a rod, à piston, or other like agent to a
needle or pointer.
SPECIFICATION in pursuance of the conditions of the Letters l'atent, filed
by the said Julien François Belleville in the Great Seal Patent Office
on the 25th November 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULIEN
FRANÇOIS BELLEVILLE, of Paris, in the French Empire, Civil Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of May, in the year of our Lord One
thousand eight hundred and fifty-eight, in the twenty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Julien François Belleville, Her special licence that I, the said Julien François
Belleville, my executors, administrators, and assigns, or such others as I, the
said Julien François Belleville, 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 "As
APPARATUS FOR INDICATING THE WORK OF PUMPS." upon the condition (amongst
others) that I, the said Julien François Belleville, my executors or adminis
trators, 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 Julien François Belleville, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawing hereunto
annexed, that is to say :-
This Invention consists in leading from the suction pipe of suction pump
or from the eduction pipe of force pumps, or from both, a pipe open to tl...
suction or eduction pipe at one end, and provided at the other with an

page_text: indicator acted upon by the pulsations of the liquid through a flexible
diaphragm or otherwise, and shewing upon a dial the force and frequency of
the pulsations.
I sometimes fix a stop-cock in the indicator tube: I do not limit myself to
any form of indicator, as all descriptions of manometers and vacuum gauges
will answer for the purpose of my Invention, and especially those known as
metallic manometers; it is essential, however, that some such indicator be used
as will shew on the outside the effect of the pulsations in the pipe. Again,
the pulsations may be made to act upon the indicator through any arrange
ments known in manometers, such as a flexible diaphragm fitted on or in the
indicator pipe communicating motion through a rod, a piston, or other like
agent to a needle or pointer.
In the Drawing annexed I have shown one method in which my Invention
may be carried into effect. e is the suction or the eduction pipe of a pump B,
and is a tube, either flexible or rigid, connecting the pipe e with a manometer
or gauge A. In the tube a cock b is fixed, by opening or closing which the
degree of motion imparted to the needle of the indicator at each stroke of the
pump B, may be increased or diminished. The relative motions of the needle
at different periods will indicate the relative degrees of efficiency with which
the pump is working.
Manometers or gauges arranged in combination with pumps as above
described may be used advantageously in most cases where pumps are
employed, but with special advantages in the case of feed pumps for boilers.
And having now described the nature of the said Invention, and in what
manner the same may be performed, I declare that I claim the combination
of a manometer, vacuum gauge, or other suitable indicating instrument with a
pump, in the manner and for the purpose herein-before described.
In witness whereof, I, the said Julien François Belleville, have here.
unto set my hand and seal, this Eighteenth day of November, One
thousand eight hundred and fifty-eight.
Witness,
CH. ARMENGAUD, Ing Civil,
23, Boulev de Strasbourg,
à Paris.
J. F. BELLEVILLE. (L.S.)