AN IMPROVED COMPOUND FOR PREVENTING INCRUSTATIONS IN BOLLERS
Year: 1864

page_text: LETTERS PATENT to William Irwin, of Limerick, Ireland, for the Inven-
tion of "AN IMPROVED COMPOUND FOR PREVENTING INCRUSTATIONS IN
BOLLERS."
Sealed the 17th January 1865, and dated the 26th July 1864.
PROVISIONAL SPECIFICATION left by the said William Irwin at the
Office of the Commissioners of Patents, with his Petition, on the 26th.
July 1864.
་་
I, WILLIAM IRWIN, of Limerick, Ireland, do hereby declare the nature of
5 the Invention for "AN IMPROVED COMPOUND FOR PREVENTING INCRUSTATIONS IN:
BOILERS," to be as follows:
This Invention has for its object improvements in preventing incrustation in
steam boilers. For this purpose I mix with the water in a steam boiler a

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Irwin in the Great Seal Patent Office on the
26th January 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
IRWIN, of Limerick, Ireland, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of July, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said William Irwin, Her special licence that I, the said
William Irwin, my executors, administrators, and assigns, or such others
as I, the said William Irwin, 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 "AN IMPROVED COMPOUND FOR PREVENTING INCRUSTATIONS IN BOILERS," upon
the condition (amongst others) that I, the said William Irwin, 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

page_text: 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 William Irwin, 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 fol-
lowing statement thereof, that is to say :-
This Invention has for its object improvements in preventing incrustation
in steam boilers. For this purpose I mix with the water in a steam boiler
a compound composed of the following ingredients, which are, by preference,
mixed together in the following proportions:-
French ochre
Oxford do.
lbs.
""
Brown do.
Yellow do.
Vandyke brown
Spanish do.
Purple do.
=
"
"
=
"
"
"
Ground umber
Ground ochre
"
"
The above proportions mixed in a gallon of water and put into a boiler
17 feet by 5 feet will prevent any incrustation.
In witness whereof, I, the said William Irwin, have hereunto set my
hand and seal, this Twenty-first day of January, in the year of our
Lord One thousand eight hundred and sixty-five.
WILLIAM IRWIN
WILLIAM IRWIN (1)