AN IMPROVED COMPOSITION FOR PRESERVING METALLIC AND WOODEN SURFACES."
Year: 1871

page_text: LETTERS PATENT to George Berwick, of Sunderland, in the County
of Durham, for the Invention of "AN IMPROVED COMPOSITION FOR
PRESERVING METALLIC AND WOODEN SURFACES."
PROVISIONAL SPECIFICATION left by the said George Berwick at the
Office of the Commissioners of Patents, with his Petition, on the
6th March 1871.
I, GEORGE BERWICK, of Sunderland, in the County of Durham, do
hereby declare the nature of the said Invention of "AN IMPROVED
COMPOSITION FOR PRESERVING METALLIC AND WOODEN SURFACES," to be as.
follows, that is to say :-
This Invention relates essentially to the application of carbolic acid in
combination with oil or grease (by preference colza oil) for preserving
polished metal surfaces. The proportions for polished metal surfaces
preferred are one part of the carbolic acid to about ten parts of the oil.
Under a second modification a good composition for preserving
metallic surfaces generally (such as the bottoms of iron ships) and

page_text: wooden surfaces generally is formed of one part of carbolic acid to about
10 parts of drying oil, which drying oil is prepared by boiling one gallon
of linseed oil with 2 lbs. of asphaltum, 1 lb. of litharge, and 1 lb. of oxide
of lead for about twelve hours, after which the proportion of one part of
carbolic acid is added to about 10 parts of the drying oil so formed.
E
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Berwick in the Great Seal Patent Office
on the 2nd September 1871.
TO. ALL TO WHOM THESE PRESENTS SHALL COME, I, Geokge
BERWICK, of Sunderland, in the County of Durham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of March, in the year of
our Lord One thousand eight hundred and seventy-one, in the 35th
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said George Berwick, Her special license that
I, tho said George Berwick, my executors, administrators, and assigns,
or such others as I, the said George Berwick, my executors, admini-
strators, or assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "AN IMPROVED COMPOSITION
FOR PRESERVING METALLIC AND WOODEN SURFACES," upon the condition
(amongst others) that I, the said George Berwick, by an instrument in
writing under my hand and scal, should particularly describe and
ascertain the nature of the said Invention, and in what manner tho
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Berwick, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to bo particularly described and ascertained in and by
the following statement, that is to say :-
My said Invention relates, firstly, to the application of carbolic acid
in combination with oil or grease (by preference colza oil) for preserving

page_text: polished metal surfaces. The proportions for polished metal surfaces
preferred are, one part of carbolic acid to about ten parts of the oil or
grease.
Under a second modification a good composition for preserving
metallic surfaces generally (such as the bottoms of iron ships) and
wooden surfaces generally is formed of one part of carbolic acid to about
ten parts of drying oil, which drying oil is prepared by boiling one
gallon of linseed oil with a lb. of asphaltum, 1 lb. of litharge, and 1 lb.
of oxide of lead for about 6 hours, after which the proportion of one
part of carbolic acid is added to about ten parts of the drying oil so
formed. The several substances constituting the said compounds herein-
before referred to may be admixed or combined by heating them in
vessels and agitating them, or by agitating alone without the aid of heat,
and after they have cooled down they constitute a fluid which may be
applied to the surfaces to be coated by brushes after the manner of
applying paint.
Having now described the nature of my said Invention and the
manner of carrying the same into practical effect, I would observe in
conclusion that what I consider novel and original and therefore claim
as the Invention secured to me by the hercin-before in part recited
Letters Patent is, the combination or admixture of carbolic acid with
the several substances herein-before mentioned, so as to constitute a
composition for preserving metallic and wooden surfaces.
In witness whereof, I, the said George Berwick, have hereunto set
my hand and seal, this Twenty-ninth day of August, One thousand
eight hundred and seventy-one.