IMPROVE- MENTS IN THE MANUFACTURE OF PAPER, AND IN THE PREPARATION OF A SUBSTANCE TO BE EMPLOYED THEREIN
Year: 1859

page_text: Sealed the 22nd May 1860, and dated the 24th November 1859.
PROVISIONAL SPECIFICATION left by the said William Septimus Losh
at the Office of the Commissioners of Patents, with his Petition, on the
24th November 1859.
I, WILLIAM SEPTIMUS LOSH, of Wreay Syke, in the County of Cumberland,
Esquire, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF PAPER, AND IN THE PREPARATION OF A SUBSTANCE
TO BE EMPLOYED THEREIN," to be as follows:-
My Invention consists in the employment of a substance hereafter described
that shall both size paper and add to its density. I prepare the substance by
uniting sulphate of lime, or carbonate of lime, sulphate of barytes, or carbonate
of barytes, or china clay, or two or more of these ingredients in a state of
extreme division, with a material known as Patent Size, for which Letters
Patent, dated 28th October 1856, No. 2527, were granted to me. Sometimes
I add to the above other farinaceous or glutinous substances. I reduce the
sulphate or carbonate of barytes, or carbonate of lime to a state of extreme
division by precipitation, but the others I only triturate.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Septimus Losh in the Great Seal Patent Office
on the 24th May 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
SEPTIMUS LOSH, of Wreay Syke, in the County of Cumberland, Esquire, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of November, 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 William Septimus Losh, Her special licence that I, the said
William Septimus Losh, my executors, administrators, and assigns, or such
others as I, the said William Septimus Losh, 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 law-
fully might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN THE MANUFACTURE OF PAPER, AND IN THE PREPARATION
OF A SUBSTANCE TO BE EMPLOYED THEREIN," upon the condition (amongst others)
that I, the said William Septimus Losh, 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 within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Septimus Losh, 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 thereof, that is to say :-
My Invention consists in the employment of a substance hereafter described
in the manufacture of paper, which will both size the paper and add to its
density. The said substance when mixed with the pulp further aids the
manufacture of paper by rendering the pulp less liable to adhere to the wires
of the paper machine and to the rolls than when the ordinary methods of
manufacture are followed. I prepare the substance by mixing carbonate of
lime, or carbonate of barytes, or sulphate of lime, or sulphate of barytes, or
carbonate of magnesia, or other like earthy substances in a finely divided state
with resin, prepared in the manner described for making waterproof size or

page_text: varnish in the Specification of Letters Patent for Great Britain granted to me,
and dated 28th October 1856, No. 2527, and while the resin is still mixed
with water in a bleached state. Or instead of mixing the earthy substances
herein-before named with resin, prepared as lastly herein referred to, I mix
them with resin treated in the manner described in the Specification of other
Letters Patent for Great Britain granted to me, and dated 8th March 1854,
No. 555. I prefer to mix the earthy substances with the resin prepared
according to the Specification of either of the Patents herein-before mentioned,
in the proportion of four parts of the earthy substances to one part of the
resin; I do not, however, confine myself to these proportions. After well
mixing, the resulting substance, which I call improved patent size, is washed,
and is then ready for use. It may be added in almost any proportion to pulp
for the manufacture of paper.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I do not claim the mixing
of any of the earthy substances herein-before named by themselves with pulp
for the manufacture of paper; but that I claim,-
First, preparing a new substance for sizing and adding weight to paper, by
combining any one or more of the earthy substances herein named with resin,
as herein-before described.
And, second, the improvement in the manufacture of paper, by mixing the
substance produced from the combination of the before named earthy
substances and resin with the paper pulp.
In witness whereof, I, the said William Septimus Losh, have hereunto
set my hand and seal this Twenty-second day of May, One thousand
eight hundred and sixty.