AN IMPROVED MEDICINAL BISCUIT.
Year: 1871

page_text: LETTERS PATENT to William Purvis, of High Street, Marylebone,
in the County of Middlesex, for the Invention of "AN IMPROVED
MEDICINAL BISCUIT.'
"
PROVISIONAL SPECIFICATION left by the said William Purvis at the
Office of the Commissioners of Patents, with his Petition, on the
18th March 1871.
、I, WILLIAM PURVIS, of High Street, Marylebone, in the County of
Middlesex, do hereby declare the nature of the said Invention for
"AN IMPROVED MEDICINAL BISCUIT," to be as follows:-
The object of this Invention is to obtain a biscuit which shall be
palateable and at the same time possessed of medicinal qualities owing
to the quininė with which it is impregnated..
:

page_text: The Invention consists in incorporating quinine in suitable pro-
portions with the ordinary ingredients used in making common flour
or other biscuits,
It is intended to carry this Invention into effect by dissolving or
partly dissolving or holding in suspension sulphate of quinine in the
milk used in the making or manufacture of the biscuit,, the amount
of the sulphate of quinine used being proportionate to the strength
required. The milk or fluid with the quinine dissolved or partially so
in it is then mixed with the flour, sugar, butter, or other ingredients of
which it is intended that the biscuit should be made. The biscuit is
then made in the ordinary way of any desired shape or size.
It is found by experience that the most suitable proportions of which
the biscuit can be made are as follows:-One pound of flour, two
ounces of lump sugar, two ounces of butter, five fluid ounces of milk,
and five grains of sulphate of quinine.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said William
Purvis in the Great Seal Patent Office on the 18th October 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
PURVIS, of High Street, Marylebone, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent. Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of March, in the year
of our Lord One thousand eight hundred and seventy-one, in the
thirty-fourth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Purvis, Her special
licence that I, the said William Purvis, my executors, administrators,
and assigns, or such others as I, the said William Purvis, my exe-
cutors, 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 "AN IMPROVED
MEDICINAL BISCUIT," upon the condition (amongst others) that I, the

page_text: said William Purvis, 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 on or before the
Eighteenth day of October One thousand eight hundred and seventy-
ane.
NOW KNOW YE, that I, the said William Purvis, 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 :-
The object of this Invention is to obtain a biscuit which shall be
palateable and at the same time possessed of medicinal qualities owing
to the quinine with which it is impregnated.
The Invention consists in incorporating quinine in suitable pro-
portions with the ordinary ingredients used in making common flour
or other biscuits.
It is intended to carry this Invention into effect by dissolving or
partially dissolving or holding in suspension sulphate of quinine in the
milk used in the making or manufacture of the biscuits, the amount
of the sulphate of quinine used being proportionate to the strength
required. The milk or fluid with the quinine dissolved or partially so
in it is then mixed with the flour, sugar, butter, or other ingredients.
of which it is intended that the hiscuit should be made. The biscuit
is then made in the ordinary way of any desired shape or size.
As stated above the amount of the sulphate of quinine used is
necessarily in proportion to the strength that the biscuit is required
to possess, but I may remark that the following proportions of the
different ingredients have been found convenient to obtain a biscuit
possessed of medicinal qualities and at the same time palateable, namely,
1 lb. of flour, 2 ozs, of lump sugar, 2 ozs. of butter, 5 fluid ounces of milk,
and 5 grains of sulphate of quinine.
It is obvious that according to the number of biscuits cut out of
a given amount of material like the above depends the proportion of
sulphate of quinine in each biscuit. The biscuits may conveniently be
made hexagonal.

page_text: I do not of course bind myself to the proportions given above, but
merely give them as an example.
In witness whereof, I, the said William Purvis, have hereunto set
my hand and seal, this Seventeenth day of October, in the year
of our Lord One thousand eight hundred and seventy-one.