A "Boiler Composition" for the Cleansing and Prevention of Incrustation of Steam Boilers.
Year: 1889

page_text: Date of Application, 23rd May, 1889
Complete Specification Left, 20th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL, SPECIFICATION,
A "Boiler Composition" for the Cleansing and Prevention of
Incrustation of Steam Boilers.
JAMES PARSONS, Engine Driver Upper Bilson Cinderford near Newnham
Gloucestershire do hereby declare the nature of this invention to be as follows:-
A mixture of tar, vegetable oil, black oil, paraffin, petroleum, common soda, soda
sh, dry soap and engine tallow mixed together in certain proportions and applied to
he inside of the Boiler plate.
The Black Oil is a mineral oil, commonly known as "Black Brick Oil."
COMPLETE SPECIFICATION.
A "Boiler Composition" for the Cleansing and Prevention of
Incrustation of Steam Boilers.
JAMES PARSONS Engine Driver Bilson Green Cinderford near Newnhamı
Gloucestershire, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
This Boiler Composition is composed of the following ingredients: Coal Tar,
Vegetable Oil, Mineral Oil, (known as 'Black Brick Oil') Paraffin, Petroleum,
Common Soda, Soda Ash, Dry Soap, and Engine Tallow, all these are incorporated
together and then boiled till they become of about the consistency of coal tar.-Where
this Composition is used the Boiler will require to be cleaned out regularly, and the
Composition is applied or painted all over the inside of the Boiler on every occasion
that the said Boiler is emptied for cleansing purposes; the quantity used being
regulated by the length of time the Boiler is required to work; the Composition is of
a volatile nature and will evaporate with the steam, the evaporation being rendered
a gradual one by the tenacity with which the Composition adheres to the Boiler-
plate.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. That, if the water used in the Boiler contains Sulphate of Lime, a substance
which easily produces a hard incrustation in steam boilers, the Composition will
decompose and deposit the Sulphate of Lime on the Boiler in the form of a light, fine,
precipitate; and that should the water contain Carbonate of Lime held in solution by
Carbonic Acid, the Composition will prevent the adherence to the Boiler-plate of the
Carbonate of Lime which is precipitated when the water boils, and also neutralize the
effect of the Carbonic Acid which is liberated and forced off with the steam. The
deposit of Lime may be easily removed when the Boiler is washed out, leaving the
plate perfectly clean and free of any hard incrustation.
2. That, the Composition which is evaporated with the steam will act as a lubricant
in the valves and cylinder of the Engine.

page_text: 3. That, the Composition will penetrate and in time so fill up the pores of the plate
as to render the inside of the Boiler smooth and glass-like, thereby rendering the
adherence of any incrustating matters much more difficult.
4. That, the Composition prevents the boiler-plates oxidising after incrustation and
corrosion is removed, preserves, and greatly adds to the life of the Boiler.
Dated this 19th day of November 1889.
JAMES PARSONS.