AN IMPROVED SUBSTITUTE FOR WHITING, PIPECLAY, AND OTHER ANALOGOUS SUBSTANCES TO BE EMPLOYED TO PRODUCE A WHITE COATING OR SURFACE
Year: 1863

page_text: LETTERS PATENT to James William Guilmette, of Manchester, in the
County of Lancaster, Manufacturing Chemist, for the Invention of "AN
IMPROVED SUBSTITUTE FOR WHITING, PIPECLAY, AND OTHER ANALOGOUS
SUBSTANCES TO BE EMPLOYED TO PRODUCE A WHITE COATING OR SURFACE."
Scaled the 18th March 1864, and dated the 5th October 1863.
PROVISIONAL SPECIFICATION left by the said James William Guilmette
at the Office of the Commissioners of Patents, with his Petition, on tho
5th October 1863.
I, JAMES WILLIAM GUILMETTE, of Manchester, in the County of Lancaster,
Manufacturing Chemist, do hereby declare the nature of the said Invention
for AN IMPROVED SUBSTITUTE FOR WHITING, PIPECLAY, AND OTHER ANALOGOUS
SUBSTANCES TO BE EMPLOYED TO PRODUCE A WHITE COATING OR SURFACE," to be as
follows:-
My Invention is designed to produce a substitute for whiting or pipeclay
to be applied for domestic or other purposes where a white surface is required.
The improved substitute consists of kaoline or china clay combined with
steatite or French chalk and ordinary wheaten flour or other farinaceous-sub-
stance, the proportions being about two parts of china clay, half a part of
French chalk, and half a part of flour. This compound, when mixed with
water, may be laid on surfaces as whiting and pipeclay, but a more durable
and enamel-like, and a whiter surface will be obtained by its use than has
bitherto been attained.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James William Guilmette, in the Great Seal Patent Office
on the 5th April 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
WILLIAM GUILMETTE, of Manchester, in the County of Lancaster, Manu-
facturing Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of October, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said James William Guilmette, Her special license that I, the said
James William Guilmette, my executors, administrators, and assigns, or such
others as I, the said James William Guilmette, 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 "AN IMPROVED SUBSTITUTE FOR WHITING, PIPECLAY, AND OTHER
ANALOGOUS SUBSTANCES TO BE EMPLOYED TO PRODUCE A WHITE COATING OR
SURFACE," upon the condition (amongst others) that I, the said James William
Guilmette, my executors or administrators, by an instrument in writing under
my, or their, or one of their bands 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 James William Guilmette, do hereby
declare the nature of the 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 is designed to produce a substitute for whiting or pipe clay
to be applied for domestic or other purposes where a white surface is required.
The improved substitute consists of kaolin or china clay combined with
steatite or French chalk and ordinary wheaten flour or other farinaceous sub-
stance, the proportions being about two parts of china clay, half a part of
French chalk, and half a part of flour. This compound, when mixed with
water, may be laid on surfaces as whiting or pipe clay, but a more durable
and enamel-like and a whiter surface will be obtained by its use than has

page_text: hitherto been attained. The aforesaid proportions may be varied to suit
requirement.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim the use of china clay separately or combined with
steatite and ordinary wheaten flour or other farinaceous substance for the
purpose aforesaid, as herein-before described and set forth.
In witness whereof, I, the said James William Guilmette, have hereunto
set my hand and seal, this First day of April, in the year of our Lord
One thousand eight hundred and sixty-four.
Witnessed by
JOHN L. DAVIES, C. E.,
Office for Patents,
Manchester.
J. W. GUILMETTE. (L.S.)