IMPROVEMENTS IN COMPOSITIONS TO BE USED AS PAINTS
Year: 1852

page_text: LETTERS PATENT to John Macintosh, of Berners Street, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN
COMPOSITIONS TO BE USED AS PAINTS."
Sealed the 9th March 1858, and dated the 2nd October 1852.
PROVISIONAL SPECIFICATION left by the said John Macintosh
at the Office of the Commissioners of Patents, with his Petition,
on the 2nd October 1852.
I, JOHN MACINTOSH, of Berners Street, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVE
MENTS IN COMPOSITIONS TO BE USED AS PAINTS" to be as follows:-
This Invention consists of using india-rubber decomposed by heat
in combination with oils or fatty matters saponified by metallic salts,
and using lime for thickening the paint or liquid produced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
.
filed by the said John Macintosh in the Great Seal Patent
Office, on the 2nd April 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JOHN MACINTOSH, of Berners Street, in the County of Middlesex, send
greeting.
WHEREAS. Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of October, in the year of
our Lord One thousand eight hundred and fifty-two, in the sixteenth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said John Macintosh, Her special licence that I,
the said John Macintosh, my executors, administrators, and assigns, or
such others as I, the said John Macintosh, my executors, administrators,
and 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 "IMPROVEMENTS IN COMPOSITIONS TO
BE USED AS PAINTS," upon the condition (amongst others) that I, the
said John Macintosh, by an instrument in writing under my hand and
seal, should particularly describe and ascertain the nature of the said
Invention, and in what manner the 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 John Macintosh, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof (that is to say:):
My invention consists of using india-rubber decomposed by heat in
combination with oils or fatty matters saponified by metallic salts, and
using lime for thickning the paint or liquid produced. And in order
that my said Invention may be most fully understood, and readily
carried into effect, I will proceed to describe the means pursued by me.

page_text: India-rubber is to be decomposed by heat, which is readily done either
by suspending the same before a fire, and thus by heat causing the
substance to decompose and run in a fluid state into a suitable receiver
below, or it may be decomposed by heat in a vessel. The fluid thus
obtained is to be combined with metallic soap and thickened with lime,
and the same may be colored by the use of pigments. This paint is
peculiarly applicable for the bottoms of ships as well as for other
surfaces, and it is not liable to crack or blister in hot climates; when
for the bottoms of ships or vessels I prefer to employ the fluid india-
rubber with only so much matter as will not dry hard, but for other
surfaces spirits of turpentine may be added as a dryer. I would state
that I make no claim to the decomposing of india-rubber by heat.
My Invention consisting in applying such fluid in the manufacture or
preparation of paints.
In witness whereof, I, the said John Macintosh, have hereunto set
my hand and seal, this Thirty-first day of March, in the year of
our Lord One thousand eight hundred and fifty-three.
20
Witness,
S. CARPMAEL
JOHN MACINTOSH. (L.B.)