Year: 1886

page_text: Date of Application, 4th June, 1886.
Complete Left, 22nd Feb., 1887.
Complete Accepted, 22nd Mar., 1887.
I, JOHN CAMERON, of 157 St. Andrews Road, Pollokshields, in the County of
Renfrew, North Britain, Chemist, do hereby declare the nature of this Invention to be
as follows, that is to say :-
My said Invention has for its object to render anti-fouling composititons for ships
more effective and economical than as hitherto made.
My Invention consists principally in using carbolates or phenates and by preference
the carbolate of mercury as ingredients in anti-fouling compositions. And in carrying
out my Invention I use carbolates of the ordinary metals such as mercury, copper,
iron or zinc, mixed one with another or with the carbolate of an earth metal such as
the carbolate of barium. For a composition to have the strongest anti-fouling
properties I use a mixture of carbolate of mercury with the carbolate of copper or zinc.
I do not restrict myself to any precise proportions of the ingredients, as for ships in
some trades it is not necessary for the anti-fouling properties to be so strong as is
desirable in the case of ships in other trades, I may however state by way of example
that I form a composition of average strength by combining 7 pounds of carbolate of
mercury and 7 pounds of carbolate of copper with each hundredweight of the ordinary
dry pigment or material used in forming the paint or composition for coating a ship's
bottom. The carbolates are formed by known chemical process and when thoroughly
dry are ground up or otherwise thoroughly mixed with the ordinary ingredients of the
paint or composition.
In applying the improved composition to a ship's bottom the usual priming or first
coat of ordinary paint is first put on, and the anti-fouling composition is laid on
over it.
EDMUND HUNT,
Applicant's Agent.

page_text: I, JOHN CAMERON, of 157 St. Andrew's Road, Pollokshields, in the County of
Renfrew, North Britain, Chemist, 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, that is to say :-
My said Invention has for its object to render anti-fouling compositions for ships
more effective and economical than as hitherto made.
My said Invention consists principally in using carbolates or phenates and by
preference the carbolate of mercury as ingredients in anti-fouling compositions. And
in carrying out my Invention I use carbolates of the ordinary metals such as mercury,
copper, iron, or zinc, mixed one with anothor or with the carbolate of an earth metal
such as the carbolate of barium. For a composition to have the strongest anti-fouling
properties I use a mixture of carbolate of mercury with the carbolate of copper or zinc.
I do not restrict myself to any precise proportions of the ingredients, as for ships in some
trades it is not necessary for the anti-fouling properties to be so strong as is desirable
in the case of ships in other trades, I may however state by way of example that I
form a composition of average strength by combining 7 pounds of carbolate of mercury
and 7 pounds of carbolate of copper with each hundredweight of the ordinary dry
pigment or material used in forming the paint or composition for coating a ship's
bottom. The carbolates are formed by known chemical process and when thoroughly
dry are ground up or otherwise thoroughly mixed with the ordinary ingredients of the
paint or composition. I find it convenient to prepare the carbolates or phenates by
taking a solution of carbolate or phenate of soda and mixing therewith a solution of a
salt of the metal of which the carbolate or phenate is required. A precipitate is
formed which is what is required and which when separated from the solution and
dried is ready for being combined with the other ingredients of the composition.
Sulphophenates formed in a similar way may be used instead of the carbolates or
phenates.
In applying the improved composition to a ship's bottom the usual priming or first
coat of ordinary paint is first put on, and the anti-fouling composition is laid on
over it.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what I claim is :—
The employing of one or more carbolates or phenates or sulphophenates as an
ingredient or ingredients in anti-fouling compositions for ships substantially as
hereinbefore described.
Dated this twenty-first day of Februar 1007
EDMUND HUNT,
Applicant's Agent.