IMPROVEMENTS IN PAINTS AND COMPOSITIONS FOR COATING SHIPS BOTTOMS AND SUBMERGED " AND OTHER SURFACES
Year: 1882

page_text: LETTERS PATENT to Arthur Bernard Rodyk of Number 7 Mincing Lane in
the City of London Gentleman for an Invention of "IMPROVEMENTS IN
PAINTS AND COMPOSITIONS FOR COATING SHIPS BOTTOMS AND SUBMERGED
"
AND OTHER SURFACES A communication to him from abroad by Nicolas
Belfield Dennys of Singapore in the Straits Settlements Magistrate of Police.
PROVISIONAL SPECIFICATION left by the said Arthur Bernard Rodyk
at the Office of the Commissioners of Patents on the 25th September 1882.
ARTHUR BERNARD RODYK of Number 7 Mincing Lane in the City of London
Gentleman "IMPROVEMENTS IN PAINTS AND COMPOSITIONS FOR COATING SHIPS
BOTTOMS AND SUBMERGED AND OTHER SURFACES." [A communication to him
from abroad by Nicolas Belfield Dennys of Singapore in the Straits Settlements
Magistrate of Police.]'
This invention relates to an improvement on an invention for which Letters
Patent have been granted to me dated 29th August 1881 Number 3751. In place of
the "Vah-ni-shi" or "Chinese Varnish " mentioned in the specification filed by me
under the said Letters Patent I employ a varnish which is made from turpentine
and powdered resin in the proportions of one gallon of turpentine to nine pounds
of powdered resin The resin is dissolved in the turpentine and if it be desired to
hasten the operation heat of about 170° degrees Fahrenheit may be applied. The
compound thus formed is then mixed with one third of its bulk (by measure) of
methylated spirits of wine. The resulting mixture is then added to the fine greyish
powder mentioned in my said specification filed as aforesaid in sufficient quantity
to make a fair working paint and the paint thus formed may be applied in any
ordinary way to the ships bottom or other surface to be coated.
I have above stated the proportions of turpentine powdered resin and methylated
spirits of wine which I have found to give the best results but these proportions
may be varied.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Arthur Bernard Rodyk in the Great Seal Patent Office on the
9th March 1883.
"
ARTHUR BERNARD RODYK of Number 7 Mincing Lane in the City of London
Gentleman "IMPROVEMENTS IN PAINTS AND COMPOSITIONS FOR COATING SHIPS
a communication to me from
BOTTOMS AND SUBMERGED AND OTHER SURFACES
abroad by Nicolas Belfield Dennys of Singapore in the Straits Settlements
Magistrate of Police
This Invention relates to an improved paint or composition for coating ships
bottoms and submerged and other surfaces for the purpose of preventing fouling
and otherwise protecting the same and is an improvement on an invention for
which Letters Patent have been granted to me dated the 29th day of August 1881
Numbered 3751 In place of and as a substitute for the Vah-ni-shi or Chinese
Varnish mentioned in the specification filed by me under the last mentioned Letters
Patent I employ a varnish which is made from turpentine and powdered resin in
the proportions of one gallon of turpentine to nine pounds of powdered resin-The
resin is dissolved in the turpentine and if it be desired to hasten the operation heat
of about 170° degrees Fahrenheit may be applied The compound thus formed is
then mixed with one third of its bulk (by measure) of methylated spirits of wine-
The resulting mixture is then added to the fine greyish powder mentioned in my
said specification filed as aforesaid in sufficient quantity to make a fair working paint
and the paint or composition thus formed may be applied in any ordinary way to the
ships bottoms or other surface to be coated or protected-I have above stated the pro-
portions of turpentine powdered resin and methylated spirits of wine which I have
found to give the best results but these proportions may be varied-I have also
found it of great advantage before adding the above mentioned mixture of tur-
pentine resin and methylated spirits of wine to the fine greyish powder aforesaid
to treat the same in the following manner The mixture is boiled in a steam heater
Directly ebullition has set in the steam is lowered until the foaming ceases-Then
the steam is turned on to keep the mixture at boiling point for half an hour The
mixture takes about twenty four hours to cool unless hastened by the application
of water or ice to the vessel containing it
Having thus described the nature of the said invention of "Improvements in
paints and compositions for coating ships bottoms and submerged and other
surfaces" and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that I claim
The manufacture and use of a paint or composition substantially as and for the
purposes herein set forth
In witness whereof I the said Arthur Bernard Rodyk have hereunto set my
hand and seal this Eighth day of March in the year of Our Lord 1883
Signed and Sealed by the said
Arthur Bernard Rodyk in
the presence of
ALFRED LOVEKIN
ARTHUR, BERNARD, RODYK (L.S.)
Clerk to Messrs Cole & Rodyk
Solr 7 Mincing Lane E.C.