IMPROVEMENTS IN THE PREVENTING OR REMOVAL OF INCRUSTATION IN STEAM BOILERS
Year: 1854

page_text: LETTERS PATENT .to John Henry Johnson, of 47, Lincoln's Inn Fields, in
the County of Middlesex, and of Glasgow, North Britain, Gentleman,
for the Invention. of "IMPROVEMENTS IN THE PREVENTING OR REMOVAL OF
INCRUSTATION IN STEAM BOILERS."-A communication from Nicholas
Augustin Baudoux, of Paris, in the Empire of France, Merchant.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at
the Office of the Commissioners of Patents, with his Petition, on the
22nd November 1854.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, and of Glasgow, North Britain, Gentleman, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE PREVENTING OR REMOVAL
OF INCRUSTATION IN STEAM BOILERS," communicated to me from Nicholas
Augustin Baudoux, of Paris, in the Empire of France, Merchant, to be
as follows:-
'This Invention relates solely to the application of certain substances -or
materials placed in steam generators, for effecting the removal of the incrust-
-ation-contained-therein,-and-for-preventing_any_re-formation of the same,_and_
Econsists in the placing of pieces or waste-scraps of raw or-tanned-hides-in the-
steam generators to be operated upon. These scraps are renewed from time

page_text: to time, as their virtues are exhausted. For the convenience of application, it
is proposed to boil a quantity of scraps of hides together, so as to form or
unite them into one mass, to be applied in the form of balls, or in any other
suitable manner. If the scraps are employed loose, they are first enclosed in
a bag before being placed inside the boiler or steam generator.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Jolin Henry Johnson in the Great Seal Patent Office on
the 22nd May 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
and of Glasgow, North Britain, Gentleman; send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing, date the Twenty-second day of November, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign,. did, for Herself, Her heirs and successors, give and grant unto me, the
said John Henry Johnson, Her, special license that I, the said John Henry
Johnson, my executors, administrators, and assigns, or such others. as I, the said
John Henry Johnson, my executors, administrators, or 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
THE PREVENTING OR REMOVAL OF INCRUSTATION IN STEAM BOILERS," communicated
to me from Nicholas Augustin Baudoux, of Paris, in the Empire of France,
Merchant, upon the condition (amongst others) that I, the said John Henry
Johnson, by an instrument-in-writing-under-my-hand-and-seal,-should-par-
ticularly 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 John Henry Johnson, do hereby declare
the nature of the 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, that is to say:
The said Invention relates solely to the application of certain substances-or
materials, placed in steam generators, for effecting the removal of the incrust-

page_text: ation formed therein, and for preventing any re-formation of the same, and
consists in the introduction of waste pieces or scraps of either raw or tanned
hides in the steam generators to be operated upon. These scraps are renewed
from time to time, as their virtues become exhausted. For the convenience of
application, it is proposed to boil a quantity of scraps of leather or hides
together, so as to form or unite them into a soft mass or paste, applied in the
form of balls, or in any other suitable manner. If the scraps are employed
loose, they may be enclosed in a bag before being placed inside the boiler or
steam generator. It is preferred, however, to employ the material in the
form of powder instead of a paste; for this purpose it is simply necessary to
allow the material to dry and harden after having been reduced to a paste,
and when dry it may be reduced to a powder or dust by a rasping, grating,
or grinding machine, which powder will be found more convenient as an
article of commerce than if the material is in any other form.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe, in conclusion, that I do not confine or restrict myself
to the precise details or arrangements which I have had occasion to describe
or refer to, as many variations may be made therefrom without deviating from
the principles or main features of the said Invention; but what I consider to
be novel and original, and therefore claim as the Invention secured to me by
the herein-before in part recited Letters Patent, is,-
First, the application and use of the refuse scraps of various kinds of leather
or raw hides for the purpose of removing and preventing the incrustation in
steam boilers.
Second, the system or mode of converting strips and cuttings of leather or
raw hides into a compact mass, or to a powder, to be introduced into steam
boilers or generators, for the purpose herein-before described.
In witness whereof, I, the said John Henry Johnson, have hereunto
set my hand and seal, the Twenty-second day of May, One thousand
eight hundred and fifty-five.