IMPROVE- MENTS IN PREVENTING INCRUSTATIONS IN STEAM BOILERS
Year: 1867

page_text: LETTERS PATENT to Philippe Jean Jacques Allibert, of No. 10, Boulevard
de Clichy, Paris, in the Empire of France, for the Invention of "IMPROVE-
MENTS IN PREVENTING INCRUSTATIONS IN STEAM BOILERS."-A communication
from Monsieur Elie Ducros, residing at Nimes, in the Empire of
Sealed the 25th October 1867, and dated the 29th April 1867.
PROVISIONAL SPECIFICATION left by the said Philippe Jean Jacques
Allibert at the Office of the Commissioners of Patents, with his Petition,
on the 29th April 1867.
I, PHILIPPE JEAN JACQUES ALLIBERT, of No. 10, Boulevard de Clichy,
Paris, in the Empire of France, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN PREVENTING INCRUSTATIONS IN STEAM BOILERS,"
to be as follows, that is to say:
The Invention communicated to me consists in the employment of a liquid,
composed of about 4 parts of hydrochloric acid, one part of nitric acid, and
sufficient water to make the liquid mark about 10 degrees by Beaumé's aero-
meter, about three gallons of such liquid being added to about one hundred
gallons of the water to be fed to the boiler.
Instead of the above acids any other analogous mineral or vegetable acids
may be employed in the same proportions. This composition is applicable to
steam boilers in general.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Philippe Jean Jacques Allibert in the Great Seal Patent
Office on the 26th October 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PHILIPPE
JEAN JACQUES ALLIBERT, of No. 10, Boulevard de Clichy, Paris, in the Empire
of France, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of April, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Philippe Jean Jacques Allibert, Her special licence, that I the said
Philippe Jean Jacques Allibert, my executors, administrators, and assigns, or
such others as I, the said Philippe Jean Jacques Allibert, 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 "IMPROVEMENTS IN PREVENTING INCRUSTATIONS IN
STEAM BOILERS," (a communication from Monsieur Elie Ducros, a person
resident at Nimes, in the Empire of France,) upon the condition (amongst
others) that I, the said Philippe Jean Jacques Allibert, 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 mauner 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 Philippe Jean Jacques Allibert, 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
following statement:-
This Invention has for object the preventing the formation of calcareous
deposits of all kinds left by water in boilers of every description, with or
without pressure, and wherever there occurs an evaporation of a liquid
susceptible of leaving a calcareous or selenite deposit, whatever the form or
dimensions of the apparatus or boilers employed.
This Invention consists in employing the mixtures of chemical products in
the following proportions, videlicet :-

page_text: Firstly, nitric acid, one part; hydrochloric acid, four parts; of distilled
water a sufficient quantity to cause the liquid formed to mark 10 degrees by
Baumé's areometer; the density of the liquid may however be increased or
lessened without affecting the result.
Secondly, all vegetable and mineral acids, either alone or mixed, brought
into solution in distilled water, so as to mark from ten to fifteen degrees
of density by Baumé's areometer, will give good results according to the
greater or less acidity of the mixture, and more especially according to the
way in which it acts on the calcareous salts so as to form soluble salts.
Thirdly, nitric acid alone; in like way hydrochloric acid, chloric acid, and
perchloric acid employed at the densities herein-before stated.
The respective quantities of each of the above-stated simple or compound
mixtures should be in the following proportions, videlicet:-One and three-
quarters of a pint to three and a half pints, or up to five and a quarter pints
per five hundred and twenty-five pints of water, according to the more or less
calcareous or selenite nature of the waters employed.
I obtain nearly the same results from the salts formed by adding to the
herein-before stated mixtures of acids, either potass or soda, in the proportion
of four to five per cent. so as to preserve an acid reaction.
Having now described the said Invention, and the manner of performing
the same, I wish it to be understood that I do not confine myself to the
precise details herein laid down; but what I claim is, the employment of the
herein-before stated acid mixtures for preventing the formation of calcareous
deposits in steam boilers, as herein-before described.
In witness whereof, I, the said Philippe Jean Jacques Allibert, have
hereto set my hand and seal, this Twenty-third day of October, in
the year of our Lord One thousand eight hundred and sixty-seven.
P. J. J. ALLIBERT. (L.S.)