IMPROVE- MENTS IN THE PREVENTION OR REMOVAL OF INCRUSTATION IN OR FROM STEAM GENERATORS
Year: 1862

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, and of 166, Buchanan Street, in the City of
Glasgow, North Britain, Gentleman, for the Invention of "IMPROVE-
MENTS IN THE PREVENTION OR REMOVAL OF INCRUSTATION IN OR FROM STEAM
GENERATORS."-A communication from abroad by the Society Lecacheux,
Sartre, Bernard, and Company, of Marseilles, in the Empire of France.
Sealed the 6th April 1863, and dated the 17th October 1862.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on the
17th October 1862.
. I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, and of 166, Buchanan Street, in the City of Glasgow, North
Britain, Gentleman, do hereby declare the nature of the said Invention for.
"IMPROVEMENTS IN THE PREVENTION OR REMOVAL OF INCRUSTATION IN OR FROM
STEAM GENERATORS," a communication from abroad by the Society, Lecacheux,
Sartre, Bernard, and Company, of Marseilles, in the Empire of France, to be.
as follows:-
This Invention relates to certain additional ingredients to be used in 'the
manufacture or preparation of the peculiar liquid for preventing and removing
incrustation in or from steam generators, for which Letters Patent for the
United Kingdom were granted to me on or about the 25th day of January
1862, Number 196, and consists in the addition to the ingredients named in the
Specification of the Patent above referred to; of one part by weight of tan or,

page_text: powdered oak bark converted to an extract, and reduced to 12° Beaumé,
5 parts by weight of the leaves of the aloe or other plant cut into shreds or
small fragments, and 2 parts by weight of animal marrow. The improved
liquid will therefore consist of,-
Snail or slug liquor
- 100 parts by weight.
Carbonate of potash
Molasses or treacle
Aloe leaves
-
8
"
-
2
"
5
33
Animal marrow
Extract of tan, 12° Beaumé
2
1
33
19
The whole must be boiled together for about two hours, and then
strained off.
The above proportions may be varied slightly, but a good result is obtained
from those herein given.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Henry Johnson in the Great Seal Patent Office on the
17th April 1863.
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 166, Buchanan Street, in the City of Glasgow, North Britain,
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of October, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-sixth 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 PREVENTION OR REMOVAL OF INCRUSTATION IN OR FROM
STEAM GENERATORS," a communication from abroad by the Society Lecacheux,
Sartre, Bernard, and Company, of Marseilles, in the Empire of France, upon
the condition (amongst others) that I, the said John Henry Johnson, my..

page_text: executors or administrators, by an instrument in writing under hand and
seal, or under the hand and seal of one of them, 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 John Henry Johnson, do hereby declaro
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:-
The said Invention relates to the use of certain additional ingredients in the
manufacture or preparation of the peculiar liquid for preventing and removing
incrustation in or from steam generators, for which Letters Patent for the
United Kingdon were granted to me on or about the Twenty-fifth day
of January, One thousand eight hundred and sixty-two, No. 196, and
consists in the addition to the ingredients named in the Specification of the
Patent above referred to, of one part by weight of tan or powdered oak bark
converted to an extract, and reduced to 12° Beaumé, five parts by weight of
natural leaves cut into shreds or small fragments, and two parts by weight of
animal marrow. The following are the ingredients and proportions now
proposed to be employed, and which have given the best results, although the
proportions may be varied slightly: