A CERTAIN PLASTIC COMBINATION TO BE USED FOR BLACKLEADING STOVES AND OTHER IRONWORK
Year: 1859

page_text: LETTERS PATENT to John Poupard, of Stratford, in the County of Essex,
for the Invention of "A CERTAIN PLASTIC COMBINATION TO BE USED FOR
BLACKLEADING STOVES AND OTHER IRONWORK."
1.9.
PROVISIONAL SPECIFICATION left by the said John Poupard at the
Office of the Commissioners of Patents, with his Petition, on the 15th
August 1859.
I, JOHN POUPARD, of Stratford, in the County of Essex, do hereby declare
the nature of the said Invention for "A CERTAIN PLASTIC COMBINATION TO BE
USED FOR BLACKLEADING STOVES AND OTHER IRONWORK," to be as follows (that is
to say) :-
My Invention, which has for its object the manufacture of black lead into
paste, for the purpose of being more readily or conveniently used for the above
purpose than hitherto, consists in uniting powdered black lead, or otherwise,
with proportionate quantities of the whites and yolks of eggs, turpentine, and
spirits of wine, or other suitable glutinous and volatile substances.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Poupard in the Great Seal Patent Office on the 15th
February 1860.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of August, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did for Herself, Her heirs and successors, give and grant unto me, the
said John Poupard, Her special licence that I, the said John Poupard, my
executors, administrators, and assigns, or such others as I, the said John
Poupard, 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 "A CERTAIN PLASTIC COMBINATION
TO BE USED FOR BLACKLEADING STOVES AND OTHER IRONWORK," upon the condition
(amongst others) that I, the said John Poupard, my executors or adminis-
trators, 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 John Poupard, 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, which has for its object the manufacture of black lead into
paste, for the purpose of being more readily or conveniently used for the above
purpose than hitherto, consists in uniting black lead in powder, or otherwise,
with proportionate quantities of the whites and yolks of eggs, turpentine, or
spirits of wine, to which also may be added ivory black, lamp black, or founders
dust, treacle or other saccharine matter, gum, water, beer, vinegar,,soap, oil
or grease.
But in order that my said Invention may be more fully understood and
readily carried into effect, I now proceed to describe in detail the mode of
performing the same (that is to say) :-
In manufacturing my plastic combination, I employ the following quantities
or proportions of the above-named articles, namely to about one hundred-
weight of powdered black lead or plumbago, twenty-eight pounds of ivory black,
lamp black, or founders dust, fourteen pounds of treacle, or other saccharine
matter, two pounds of gum, five gallons of water, beer, or vinegar, two quarts
of spirits of wine, or turpentine, seven pounds of the whites and yolks of eggs,
one gallon of oil, or its equivalent of grease, and fourteen pounds of soap.

page_text: The whole of the above articles are to be thoroughly incorporated or
mixed together in any suitable vessel, either by hand or otherwise, until
the combination has acquired the smooth plastic consistency suitable for
being conveniently packed and sold in boxes or otherwise, and thus rendered
ready for use.
In conclusion to the foregoing description, I would here briefly note that
the admixture may partake, more or less, of any or all of the above ingredients,
and be varied in combination to suit the several qualities, or descriptions
required.
Having now fully described the nature of this my said Invention, and in
what manner the same is to be performed, I would hereby have it understood
that it is not my intention to confine myself to the precise details herein-before
described, nor do I claim the exclusive use of the processes, and substances
herein mentioned and referred to except when the same are employed for the
purposes of my said Invention, which I hereby declare to consist in the
manufacture of the admixture, or plastic combination in the manner and for
the purposes herein-before set forth and described.
In witness whereof, I, the said John Poupard, have hereunto set my
hand and seal, this Fifteenth day of February, in the year of our
Lord One thousand eight hundred and sixty.
Witness,
JOHN POUPARD. (L.S.)
F. R. DARKIN CAMPBELL,
Clerk to Messrs. Weatherdon & Co.,
77, Chancery Lane.