IMPROVEMENTS IN COMBINING PLASTIC SUBSTANCES WITH METALS
Year: 1863

page_text: LETTERS PATENT to Matthew Cartwright, of Hoxton, in the County of
Middlesex, Dentist, for the Invention of "IMPROVEMENTS IN COMBINING
PLASTIC SUBSTANCES WITH METALS."
Sealed the 4th August 1863, and dated the 10th February 1863.
PROVISIONAL SPECIFICATION left by the said Matthew Cartwright at
the Office of the Commissioners of Patents, with his Petition, on the
10th February 1863.
I, MATTHEW CARTWRIGHT, of Hoxton; in the County of Middlesex, Dentist,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
COMBINING PLASTIC. SUBSTANCES. WITH METALS," to be as follows:
My Invention consists in combining, by grinding, together, a solution of
vulcanized india-rubber, or plain india-rubber or gutta percha and metal leaf,
or metal in a state of finely divided powder...
Instead of a solution of india-rubber or gutta percha I. sometimes use
campticon, parkesine, dissolved amber, gum, copal, or other suitable vehicle,
or two or more of these substances combined! After grinding the materials

page_text: together I sometimes subject them to heat for the purpose of hardening, and
in some cases of "curing" them.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Matthew Cartwright in the Great Seal Patent Office on the
8th August 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MATTHEW
CARTWRIGHT, of Hoxton, in the County of Middlesex, Dentist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of February, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Matthew Cartwright, Her special licence, that I, the said Matthew
Cartwright, my executors, administrators, and assigns, or such others as I, the
said Matthew Cartwright, 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 COMBINING PLASTIC SUBSTANCES WITH METALS," upon the
condition (amongst others) that I, the said Matthew Cartwright, my executors
or administrators, by an instrument in writing under my, or their, or one of
their hands and seals, 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 Matthew Cartwright, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, that is to say:
My Invention consists in combining, by grinding together, a solution of
india-rubber or gutta percha and metal leaf, or metal in a state of finely
divided powder.
Instead of a solution of india-rubber or gutta percha I sometimes use
campticon, parkesine, dissolved amber, gum, copal, or other suitable vehicle,
or two or more of these substances combined. After grinding the materials

page_text: together I sometimes subject them to heat for the purpose of hardening, and
in some cases of curing them.
In witness whereof, I, the said Matthew Cartwright, have hereunto set
my hand and seal, this Seventh day of August, One thousand eight
hundred and sixty-three.
MATTHEW CARTWRIGHT. (L.S.)
Witness,
EDWP. G. BREWER,
Of the Firm of Willcock & Brewer,
Patent Agents,
89, Chancery Lane,
London, W.C.