Bottoms and other Submerged Structures.
Year: 1888

page_text: Date of Application, 10th Aug., 1888
Complete Specification Left, 9th Feb., 1889
Complete Specification Accepted, 9th Mar., 1889
Bottoms and other Submerged Structures.
I, WILLIAM OGLE WOTTON, of 103, Shirley Road, Southampton, Master Mariner,
do hereby declare the nature of this invention to be as follows:-
My Invention relates to an improved composition for preventing the fouling of
ships' bottoms and other submerged structures.
For the purpose of my invention, I prepare, and keep separate until required
for use, the vehicle or menstruum and the ingredients conferring the anti-fouling,
covering and hardening qualities.
The vehicle consists of a solution of caoutchouc in oil of turpentine or other
suitable solvent, boiled linseed oil, and common rosin. The rosin is dissolved in
the linseed oil with the aid of gentle heat, and the mixture then stirred into the
caoutchouc solution.
The anti-fouling ingredient is metallic copper or an alloy of this metal in a
finely divided or powdered condition, but preferably pure metallic copper obtained
by chemical precipitation from a solution of a copper salt. With this metallic
powder is mixed a suitable proportion of red-lead to give body and. hardening
properties to the anti-fouling composition, these powders being mixed dry, and so
kept until required for use, when a suitable proportion of the mixed powders is
thoroughly incorporated with the vehicle or menstruum above described.
The anti-fouling composition is applied over, a priming coat composed of the
vehicle above described with the addition of red lead to give it body or covering
properties.
1 Ammunt 1000
W. O., WOTTON.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: 1 WILLIAM OGLE WOTTON of 103 Shirley Road, Southampton, Master Mariner, 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:
My invention relates to an improved composition for preventing the fouling of ships'
bottoms and other submerged structures.
For the purpose of my invention I prepare and keep separate until required for use,
the vehicle or menstruum and the ingredients conferring the anti-fouling, covering
and hardening qualities.
The vehicle consists of a solution of caoutchouc in oil of turpentine or other suitable
solvent boiled linseed oil and common rosin.
:-
The preferred proportions of these ingredients and modus operandi are as follows:-
4 lbs. of finely divided caoutchouc are dissolved in 6 gallons of turpentine by immer-
sion for some days and subsequent application of a moderate heat; 40 lbs. of rosin are
dissolved in 4 gallons boiled linseed oil with the aid of gentle heat and then stirred
into the caoutchouc solution.
The anti-fouling ingredient is metallic copper or an alloy of this metal in a finely
divided or powdered condition, but preferably pure metallic copper obtained by
chemical precipitation from a solution of a copper salt. With this metallic powder is
mixed a suitable proportion of red lead to give body and hardening properties to the
anti-fouling composition, the preferred proportions being 3 parts, by weight, of copper
to 2 parts of red lead. These powders are mixed dry and so kept until required for
use when a suitable proportion of the mixed powders is thoroughly incorporated with
the vehicle or menstruum above described to bring it to the consistency of ordinary
paint.
The anti-fouling composition is applied with the brush over a priming coat composed
of the vehicle above described with the addition of red lead to give it body or covering
properties.
I would observe in conclusion that although I have specified the proportions which
I find answer well in practice, I do not limit myself thereto.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is―
The herein described anti-fouling composition, consisting essentially of the herein
described vehicle or menstruum in combination with metallic copper in a finely divided
condition, as specified.
W. O. WOTTON.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.