IMPROVED METHOD OF MAKING LIME
Year: 1818

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MAURICE
ST. LEGEN, of Saint Giles, Camberwell, in the County of Surry, Gentleman,
send greeting.
WHEREAS His present Majesty King George the Third, in and by
His Royal Letters Patent, bearing date at Westminster, the Nineteenth day
of May last, did give and grant unto me, the said Maurice St. Leger, my
exors, adñors, and assigns, His especial licence, full power, sole privilege and
authority, that I, the said Maurice St. Leger, my cñors, adñors, and assigns,
and every of us, by myself and themselves, or by my and their deputy or
deputies, servants or agents, or such other as I, the said Maurice St. Leger,
my exors, adñiors, or assigns, should agree with, and no others, from time to
time and at all times thereafter during the term of fourteen years, should
and lawfully might use, exercise, and vend an Invention of an "IMPROVED
METHOD OF MAKING LIME," which had been communicated to me by Mr. Vicat,
of Soulyat, in the Kingdom of France, Civil Engineer, out of the Dominions
of His Majesty, within England and Wales, the Town of Berwick-upon-
Tweed, and also in all His Majesty's Colonies and Plantations abroad, to
hold the said licence, privilege, and authority unto me, the said Maurice
St. Leger, my exors, adñiors, and assigns, for and during the term of fourteen

page_text: years from the date of the said Letters Patent, pursuant to the Statute in
such case made and provided.
And in the said Letters Patent, among
other things, is contained a proviso obliging me, the said Maurice St. Leger,
by an instrument in writing under my hand and scal, particularly to describe
and ascertain the nature of the said Invention, and in what manner the
same is to be performed, and to cause the same to be inrolled in the High
Court of Chancery within the space of six calendar months next after the
date of the said Letters Patent, as in and by the said Letters Patent, reference
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Maurice St. Leger, do hereby declare that the nature of the said Invention,
and the manner in which the same is to be performed, is as follows, viz:--
I take chalk, stone, or any other substance from which lime can be
obtained, which I pulverize, to which I add common clay or any other
substance containing alumine and silex, which I encrease or diminish according
to the required strength of the lime. I mix them together and add water to
them until they become a paste of the consistence of common mortar. I then
make the said paste or substance into lumps. These lumps, after being
thoroughly dried by natural or artificial heat, I put into a kiln and expose
to the action of fire in the usual way of making lime. The degree of heat
must depend upon the size and quality of the lumps; but I find the lumps
have been sufficiently exposed to the fire when they can be broken by the
hands. Instead of chalk, stone, or such other substance as is above mentioned,
ordinary lime, slacked or pulverized, may be substituted; but in that case
the compound does not require to be so much exposed to the action of fire.
The quantity of clay or other substance containing alumine and silex to
be added to the chalk, stone, or such other substance as aforesaid, or to
the lime slacked or pulverized, must depend as well upon the quality of the
chalk, stone, or other substance or lime as upon the quality of the clay or
other substance containing alumine and silex; but I find in general that from
one to twenty measures or given quantities of clay or other substance con-
taining alumine and silex to every one hundred measures or given quantities
of chalk, stone, or other substance, or of lime, as above mentioned, is the
proper quantity or proportion.
In witness whereof, I have hereunto set my hand and seal, the
Nineteenth day of November, in the year of our Lord One thousand
eight hundred and eighteen.
MOE ST LEGER. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Nineteenth day of November,
in the year of our Lord 1818, the aforesaid Maurice St. Leger came before
our said Lord the King in His Chancery, and acknowledged the Specifi-
cation aforesaid, and all and every thing therein contained and specified,
in form above written. And also the Specification aforesaid was stamped
according to the tenor of the Statute made for that purpose.
Inrolled the Nineteenth day of November, in the year of our Lord
One thousand eight hundred and eighteen.