IMPROVED MEANS OF REMOVING INCRUSTATIONS IN BOILERS, AND OF PREVENTING THE SAME
Year: 1859

page_text: LETTERS PATENT to Louis Serbat, of Saint Saulve, Departement du Nord,
in the Empire of France, Manufacturer, for the Invention of "IMPROVED
MEANS OF REMOVING INCRUSTATIONS IN BOILERS, AND OF PREVENTING THE
SAME."
Sealed the 15th June 1860, and dated the 19th December 1859.
PROVISIONAL SPECIFICATION left by the said Louis Serbat at the
Office of the Commissioners of Patents, with his Petition, on the 19th
December 1859.
I, LOUIS SERBAT, of Saint Saulve, Departement du Nord, in the Empire of
France, Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVED MEANS OF REMOVING INCRUSTATIONS IN BOILERS, AND OF PREVENTING
THE SAME," to be as follows:-
In the Provisional Specification of an Invention communicated by me
to Richard Archibald Brooman, and provisionally protected on the 8th
of August 1859 (No. 1824), under the Patent Law Amendment Act,
was set forth a means of preventing incrustations in boilers by the use of
leather, such being immersed in the water contained in the boiler. I have
since discovered that any tannate of gelatine will answer the same purpose as
the leather; and I claim the employment of tannate of gelatine, as also of
materials which are of the nature of tannate of gelatine, or which are

page_text: equivalent thereto, except such as are comprehended under the term leather,
for the purpose of preventing incrustations in boilers.
My Invention further consists in the employment of such substances and of
leather for the purpose of removing incrustations in boilers.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Louis Serbat in the Great Seal Patent Office on the
19th June 1860.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
SERBAT, of Saint Saulve, Departement du Nord, in the Empire of France,
Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of December, in the year of our
Lord One thousand eight hundred and fifty-nine, in the twenty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Louis Serbat, Her special licence that I, the
said Louis Serbat, my executors, administrators, and assigns, or such others
as I, the said Louis Serbat, 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 Inven-
tion for "IMPROVED MEANS OF REMOVING INCRUSTATIONS IN BOILERS, AND OF
PREVENTING THE SAME," upon the condition (amongst others) that I, the
said Louis Serbat, 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 Serbat, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
In the Specification of an Invention communicated by me to Richard
Archibald Brooman, and for which he obtained Her Majesty's Letters Patent,

page_text: dated the 8th day of August 1859 (No. 1824), was set forth a means of pre-
venting incrustations in boilers by the use of leather, such leather being immersed
in the water contained in the boiler. I have since discovered that any tannate
of gelatine will answer the same purpose as the leather, and the first part of
my Invention consists in the employment of tannate of gelatine, as also of
materials which are of the nature of tannate of gelatine, or which are
equivalent thereto, except such as are comprehended under the term leather,
for the purpose of preventing incrustations in boilers.
My Invention further consists in the employment of such substances and of
leather for the purpose of removing incrustions in boilers.
When leather is employed it should be previously submitted to washing in
a bath of weak acid, to deprive it of foreign matters. The quantity of leather,
or tannate of gelatine, or other material of like nature which it is necessary to
employ for the purposes of this Invention varies according to the quality of the
water, but a pound or a pound and a half to each horse-power of the engine
will generally be found sufficient.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I do not claim as any part
of the present Invention the employment of leather for preventing incrustations
in boilers, as the employment of leather for that purpose was claimed in the
Specification of the Letters Patent before mentioned; but what I claim is,-
First, the employment of tannate of gelatine, as also of materials which are
of like nature, or equivalent thereto, except such as are comprehended under
the term leather, for preventing incrustations in boilers.
Second, the employment of such substances and of leather for removing
incrustations in boilers.
In witness whereof, I, the said Louis Serbat, have hereunto set my
hand and seal, this Fourteenth day of June, One thousand eight
hundred and sixty.
L. SERDAT. (L.S.)