An IMPROVED ANTI-CORROSIVE BOILER FLUID."
Year: 1873

page_text: LETTERS PATENT to Thomas Payne, of 148, East India Road, Poplar,
in the County of Middlesex, Engineer, for the Invention of "An
IMPROVED ANTI-CORROSIVE BOILER FLUID."
IMPROVED ANTI-CORROSIVE BOILER FLUID."
Sealed the 23rd December 1873, and dated the 26th June 1873.

page_text: of water, into which has been dissolved half a pound of white glue and
one pound of carbon of ammonia; let it boil for one hour. In a separate
vessel I mix one pound of palm oil, 1 quart of black oil (refuse from
coal oil refinery), 1 quart of sweet almond oil, 1 quart of Stockholm tar,
1 pound of potash, and half a pound of oxide of iron, melt them together
over a slow fire, then add 1 pound of oxalic acid, and expose the
whole mixture to a gentle heat (not to boil) for one hour. The contents
of both vessels I now mix, and add human urine to make up ten
gallons.
This fluid has no injurious effect upon iron, copper, or brass; it pre-
vents foaming of the water, and lubricates the working parts of the
steam engine which are exposed to the direct action of the steam,) as
piston and slide valve.
One gill per horse-power per week will remove any incrustation from
foul boilers, and half the quantity will keep clean ones perfect. It may
be introduced into boilers by the feed pipe from water cistern, or through
injector or safety valve, thus making its application very simple, and
without the necessity of stoppage,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Payne in the Great Scal Patent Office on 2
the 26th December 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
PAYNE, of 148, East India Road, Poplar, in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters 2
Patent, bearing date the Twenty-sixth day of June, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Thomas Payne, Her special licence that I, the said
Thomas Payne, my executors, administrators, and assigns, or such others a
as I, the said Thomas Payne, my exccutors, 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

page_text: lawfully might make, use, exercise, and vend, within the United King.
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "AN IMPROVED ANTI-CORROSIVE BOILER FLUID,"
upon the condition (amongst others) that I, the said Thomas Payne,
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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Payne, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement:-
A compound of chemicals, which, when mixed with water, will prevent
incrustation in steam boilers by destroying or decomposing the elements
of which the incrustation is composed.
The fluid is prepared as follows:-For ten gallons I take two ounces
of tannic acid, two ounces of quercitanic acid, two ounces of gallic acid,
and two ounces of ellagic acid. I mix these four acids with six gallons
of water, into which has been dissolved ten pounds of Scotch soda, half a
pound of white gluc, and one pound of carbon of ammonia; let it boil
for one hour. In a separate vessel I mix one pound of palm oil, one
quart of black oil (refuse from coal oil refinery), one quart of sweet
almond oil, one quart of Stockholm tar, one pound of potash, and half a
pound of oxide of iron, melt them together over a slow fire, then I add
one pound of oxalic acid, and expose the whole mixture to a gentle heat
(not to boil) for one hour. The contents of both vessels I now mix, and
add human urine to make up ten gallons.
This fluid has no injurious effect upon iron, copper, or brass; -it pre-
vents foaming of the water, and lubricates the working parts of the
steam engine (which are exposed to the direct action of the steam,) as
piston and slide valve.
One gill per horse-power per week will remove any incrustation from
foul boilers, and half the quantity will keep clean ones perfect. It may
be introduced into boilers by the feed pipe from water cistern, or through

page_text: injector or safety valve, thus making its application very simple, and
without the necessity of stoppage.
:
f
In witness whereof, I, the said Thomas Payne, have hereunto set
my hand and seal, this Twenty-sixth day of December, in the
year of our Lord One thousand eight hundred and seventy- &
three.
THOMAS PAYNE. (L.S.)