A NEW COMPOSITION OF TINNING OR LINING OF ALL UTENSILS 02 VESSELLS MADE OF COPPER, BRASS, IRON, OR OTHER METALS, ESPECIALLY THOSE USED FOR KITCHEN OR CULINARY PURPOSES
Year: 1785

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
POULAIN, of Mortlake, in the County of Surry, Gentleman, send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Thirteenth day of September, in the twenty-fifth year of His reign,
did give and grant to me, the said John Poulain, His especial licence, full
power, sole privilege and authority, that I, the said John Poulain, my
exors, admors, and assigns, should and lawfully might, during the term of
years therein expressed, make, use, exercise, and vend, throughout that part of
Great Britain called England, His Dominion of Wales, and Town of Berwick-
upon-Tweed, my Invention of "A NEW COMPOSITION OF TINNING OR LINING
OF ALL UTENSILS 02 VESSELLS MADE OF COPPER, BRASS, IRON, OR OTHER METALS,
ESPECIALLY THOSE USED FOR KITCHEN OR CULINARY PURPOSES;" in which said
recited Letters Patent is contained a proviso obliging me, the said John
Poulain, particularly to describe and ascertain the nature of my said Inven-
tion, and in what manner the same is to be performed, by an instrument
in writing under my hand and seal, and to cause the same to be inrolled in IIis

page_text: Majestie's High Court of Chancery within one calendar month next and
immediately after the date of the said Letters Patent, as in and by the said
Letters Patent, and the Statute in that behalf made, relation being thereunto
respectively had, may more at large appear.
NOW KNOW YE, that in compliance with the said proviso, and in
pursuance of the said Statute, I, the said John. Poulain, do hereby declare
that the following is a particular description of the nature of my said Invention,
and in what manner the same is to be performed; that is to say :-
Take grain tin one pound, good malleable iron one ounce and an half, platina
one drachm, silver one pennyweight, gold three grains, the whole well fused
together in a crucible; one ounce of pounded borax, and two ounces of
pounded glass; when it is well fused, cast it in small ingots. The composition
to be fit for use must be heated and put in a metal mortar, also heated over
a fire and well pounded with a heated metal pestle; when it is well pounded
make an ingot of it by putting it on the fire in a mould made of iron plate,
in which mould the composition must be well stirred and let to cool, then it is
fit for use.
To apply the composition:First tin the utensil or vessell with grain
tin and sal armoniack, as it is usually done in the common way of tinning;
clean well the tinned part of the metal utensil or vessell, and then apply a
coat of the composition with sal armoniack, as it is usually done in the
common way of tinning, and when the composition is well spread let it cool;
then make it a little red hot in all its parts to neal it, and plunge the metal
utensil or vessell when yet hot in cold water; then with a sharp scraper
scrape and rub off the rough or gramous particles of the composition
applied on the metal utensil or vessell, and scour it well with sand. The same
operation must be repeated for every coat of the composition that is applied.
Two coats of the composition are quite sufficient for culinary utensils or
vessells, and a thin coat of grain tin may be applied over the last coat
of the composition to smooth it. Charcoal fire is preferable to any other
fire to apply the composition with.-N.B. The above composition may
be applied or used for the lining, as also the covering or plating the
surfaces of all materials made of copper, brass, iron, and other metals, or
mixtures of metals. "
In witness whereof I have hereunto set my hand and seal, this Sixth
day of October, in the year of our Lord One thousand seven hundred
and eighty five

page_text: AND BE IT REMEMBERED, that on the Sixth day of October, in the
year of our Lord 1785, the aforesaid John Poulain came before our said Lord
the King in His Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained and specified, in form above written.
And also the Specification aforesaid was stampt according to the tenor of
the Statutes made for that purpose.
Inrolled the Sixth day of October, in the year of our Lord One thousand