Ships and Submerged Structures.
Year: 1885

page_text: Ships and Submerged Structures.
I, PETER DENNISTON of 372, Argyle Street Glasgow, Lanarkshire, Shipowner,
do hereby declare the nature of my invention for "AN IMPROVED ANTIFOULING
AND ANTI-CORROSIVE COMPOSITION FOR SHIPS AND SUBMERGED STRUCTURES
to be as follows:-
-
"
The object of my invention is to provide an efficient composition for coating
ship's bottoms piers and other structures of iron, steel wood and the like which
may be partially or entirely submerged in the sea, in order to prevent fouling, and
also to serve as a preservative against corrosion in cases where steel or iron is
employed in the structure.
My invention consists in employing paraffin scale as the base of an antifouling
composition and applying such base alone or with a suitable solvent, or in
admixture with white lead or other paint to give body to the composition and
with or without the addition of rosin and such poisonous ingredients as arsenic,
cyanide of mercury or the like.
In applying the paraffin scale alone to a ship or other structure, which I only
recommend for a single coat or for a final coat or covering, I melt the paraffin
scale and add thereto a quantity of crude oil blue oil naphtha or other solvent to
bring it to such a consistency that it may be readily applied. .
In employing it as a base in admixture with other ingredients I prefer to add to
the paraffin scale the following substances in or about the following proportions
namely, 10 lbs paraffin scale, 7 lbs white lead, zinc or other paint, 6 lbs Bronze
green, 1 lb light green, 2 lbs Rosin, and 2 lbs Arsenic or cyanide or oxide of
mercury or similar poisonous compound. The green being applied as a colouring
matter may be varied its main constituent white lead being generally retained in
admixture with some colouring matter.
In forming this composition I find it convenient to melt the rosin, then add the
paraffin scale and when both are thoroughly melted I add the white lead or paint
and mix while hot and finally add the poisonous ingredients if wanted. In warm
weather the composition may be used in the heated state without further addition,
but in cold weather I prefer to bring the composition to a thinner consistency by
adding crude oil or blue oil or a solution of paraffin scale and naphtha or other
solvent.

page_text: Ships and Submerged Structures.
I, PETER DENNISTON of 92 Saint Vincent Street Glasgow, Lanarkshire, Ship-
owner, 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:-
The object of my invention is to provide an efficient composition for coating
ship's bottoms piers and other structures of iron, steel, wood and the like which
may be partially or entirely submerged in the sea, in order to prevent fouling and
also to serve as a preservative against corrosion in cases where steel or iron is
einployed in the structure.
My invention consists in employing paraffin scale as an anti-fouling composition
and in applying such scale alone with a suitable solvent, or as a base in admixture
with white lead or other paint to give body to the composition and with or with-
out the addition of rosin and such poisonous ingredients as arsenic, cyanide of
mercury or the like.
In applying the paraffin scale alone to a ship or other structure which I only
recommend for a single coat or for a final coat or covering I melt the paraffin scale
and add thereto a quantity of crude oil, paraffin oil, blue oil, naphtha or other
solvent to bring it to such a consistency that it may be readily applied. In.
employing it as a base in admixture with other ingredients I prefer to add to the
paraffin scale the following substances in or about the proportions stated, namely,
10 lbs paraffin scale, 7 lbs white lead zinc or other paint, 6 lbs bronze green, 1 lb
light green, 2 lbs rosin and 2 lbs arsenic or cyanide or oxide of mercury or similar
poisonous compound. The green pigment being applied as a colouring matter may
vary in quantity (or any other colouring matter may be used) its main constituent
white lead being generally retained in admixture with some colouring matter. In
forming this composition I find it convenient to melt the rosin then add the paraffin
scale and when both are thoroughly melted I add the white lead or paint and mix
while hot and finally add the poisonous ingredients if wanted. In warm weather
the composition may be used in the heated state without further addition but in
cold weather I prefer to bring the composition to a thinner consistency by adding
crude oil paraffin oil, or blue oil or a solution of paraffin scale and naphtha or other
solvent.
The main objects attained by the use of the solvent for the paraffin scale or for
the mixture are the keeping down the cost to consumers and bringing the
composition to such a consistency that it may not solidify in the act of being
applied by the brush.
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
1. An antifouling and anti-corrosive composition for ships and submerged
structures, consisting of paraffin scale dissolved with crude oil, paraffin oil, blue oil,
naphtha or other solvent as and for the purpose set forth.

page_text: 2. An anti-fouling and anti-corrosive composition for ships and submerged
structures, consisting of paraffin scale as a base and white lead or other paint with.
or without the addition of rosin and poisonous ingredients substantially as herein
described.
3. The herein described anti-fouling and anti-corrosive composition consisting of
paraffin scale and white lead or other paint with or without the addition of bronze
green or other colouring matter, rosin and a poisonous compound said composition
or mixture being brought to a proper consistency for application to ships and sub-
merged structures by thinning with a solvent of paraffin scale substantially as set
forth.