AN ANTIFOULING COMPOSITION SUITABLE FOR SHIPS' BOTTOMS AND OTHER SUBMERGED OR PARTLY SUBMERGED STRUCTURES
Year: 1883

page_text: LETTERS PATENT to William Ferguson M'Intosh and William Storcy
Croudace both of Dundee in the County of Forfar, North Britain for an
Invention of "AN ANTIFOULING COMPOSITION SUITABLE FOR SHIPS' BOTTOMS
AND OTHER SUBMERGED OR PARTLY SUBMERGED STRUCTURES"
PROVISIONAL SPECIFICATION left by the said William Ferguson M°Intosh
and William Storey Croudace at the Office of the Commissioners of Patents
on the 12th November 1883.
WILLIAM FERGUSON M'INTOSH and WILLIAM STOREY CROUDACE both of
Dundee in the County of Forfar, North Britain. "AN ANTIFOULING COMPOSITION
SUITABLE FOR SHIPS' BOTTOMS AND OTHER SUBMERGED OR PARTLY SUBMERGED
STRUCTURES
This Invention which relates to an antifouling composition is applicable for
preventing the fouling of ships' bottoms, buoys, floating docks, dredgers, Bridgo
and lighthouse piers or submerged or partly submerged structures made of iron or
steel.
The invention consists in compounding and boiling together Venice turpentine,
Palma Christi Oil, Tallow, and Colcothar with another mixture composed - of
Barium Sulphate and Calcium Carbonate ground with Linseed oil and common
turpentine.
In applying the mixture for coating surfaces of iron or steel plates in ships'
bottoms or in other iron or steel structures as herein before mentioned it is heated
and applied whilst hot over one, two or more coatings of zinc or white lead paint
but preferably zinc paint is used.
On applying the composition constituting our invention in the manner herein-
before set forth there is produced on the metallic surfaces a smooth soapy surface
which exfoliates rapidly and it acts as a preventative from corrosion from the
action of sea water at the same time preventing the attachment of marine growth.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Williami Ferguson M-Intosh and William Storey Croudace in the
Patent Office on the 10th May 1884.
"
WILLIAM FERGUSON MCINTOSH and WILLIAM STOREY CROUDACE, both of Dundee,
in the County of Forfar, North Britain "AN ANTIFOULING COMPOSITION
SUITABLE FOR SHIPS' BOTTOMS AND OTHER SUBMERGED OR PARTLY SUBMERGED
STRUCTURES
"
Our said Invention, which relates to an antifouling composition, is applicable
for preventing the fouling of ships' bottoms, buoys, floating docks, dredgers,
Bridge and lighthouse piers or other submerged or partly submerged structures
made of iron or steel.
The Invention consists in compounding and boiling together Venice turpentine,
Palma Christi Oil, Tallow and Calcothar with another mixture composed of
Barium Sulphate and Calcium carbonate ground with Linseed Oil and common
turpentine.
In applying the mixture for coating surfaces of iron or steel plates in ships'
bottoms, or in other iron or steel structures as hereinbefore mentioned, the said
mixture is heated and applied whilst hot over one, two or more coatings of zinc
or white lead paint, but preferably zinc paint is used.
On applying the composition constituting our present Invention in the manner
hereinbefore set forth, there is produced on the metallic surfaces a smooth soapy
surface which exfoliates rapidly, and it acts as a preventative from corrosion from
the action of sea water, at the same time preventing the attachment of marine
growth.
It is to be understood that our present Invention may be carried out with the
different substances herein before mentioned in various proportions, and the
following proportions of the ingredients are given as an example of what has been
found to answer well, namely:—
Vanica tumenting and common trumentina

page_text: or partly submerged iron or steel structures, the heating of the said composition
and coating it over one two or more coatings of white lead or zinc paint,
substantially as hereinbefore set forth.
In Witness Whereof we the said William Ferguson MºIntosh and William
Storey Croudace have hereunto set our hands and seals this eighth day of May
in the year of our Lord One thousand eight hundred and eighty four.
W¼ FERGUSON M'INTOSH (L.S.)