THE MANUFACTURING OR PREPARING OF A CERTAIN SUBSTANCE FOR BLUE DYERS FROM MATERIALS NOT HITHERTO USED FOR THAT PURPOSE, APPLICABLE FOR DYEING BLUES AND OTHER COLOURS
Year: 1836

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
GILYARD SCARTII and ROBERT SCARTH, of Leeds, in the County of York,
Dyers, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster the Twenty-sixth day of February, in the sixth year of His
reign, did, for Himself, His heirs and successors, give and grant unto us, the
said William Gilyard Scarth and Robert Scarth, His especial licence, full
power, sole privilege and authority, that we, the said William Gilyard Scarth
and Robert Scarth, our exors, adiñiors, and assigns, or such others as we, the
said William Gilyard Scarth and Robert Scarth, our exors, adñiors, or assigns,
should at any time agree with, and no others, from time to time and at all
times during the term of years therein expressed, should and lawfully might
make, use, exercise, and vend, within England, Wales, and the Town of
Berwick-upon-Tweed, our Invention of "THE MANUFACTURING OR PREPARING
OF A CERTAIN SUBSTANCE FOR BLUE DYERS FROM MATERIALS NOT HITHERTO USED
FOR THAT PURPOSE, APPLICABLE FOR DYEING BLUES AND OTHER COLOURS;" in which
said Letters Patent is contained a proviso, that we, the said William Gilyard
Searth and Robert Scarth, or one of us, shall cause a particular description of
the nature of our said Invention, and in what manner the same is to be
performed, to be inrolled in. His said Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said in
part recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, we, the said
William Gilyard Scarth and Robert Scarth, do hereby declare the nature of
our Invention, and the manner in which the same is to be performed, are fully
described and ascertained in and by the following statement thereof, that is
to say :-
Our Invention relates to that part of the process of dyeing wherein the
substance called "woad is used for dyeing blue and other colours; and our
Invention consists in the manufacture or preparation of that substance, by the
application of shumac, peat, oak bark, and the stalks, stems, and other parts
of the hop plant, in place of the plant heretofore cultivated and used for that
purpose, and which is well known, and called woad. Having thus explained
the object of our Invention, we will describe the manner of carrying the same.
into effect.
Take any quantity of the shumac of commerce, the same is to be sprinkled
with water, and placed in a heap in order to produce fermentation, in like
manner to the course pursued with the preparation of the plant heretofore
used, commencing with that part of its process at which it is set to ferment;
and the result of such fermentation, when shumac is the material operated on,
will be so similar to the like process of fermentation of the product of the
plant heretofore employed, that a workman acquainted with the preparation of
the substance called woad by dyers, as heretofore practised, will, when he is
applying the material called shumac, readily judge of the maturity of the
process, and when it is ready for the purposes of the dyer, whether for dyeing
blue or other colour, the great object of the workman is to seo that the heap
of shumac is equally fermented in all parts; the product thus obtained will
then be suitable, and is to be used in the same manner as woad obtained from
the material or plant heretofore used.
In using peat as a substitute for the product of the plant heretofore
employed in the manufacture of the substance used by dyers called woad,
peat will, in some instances, be found to be in such a condition as to be 3
suitable at once to be used by the dyer, and this will readily be judged of by
taking a sample and testing it; but should the peat not be found suitable for
proceeding at once to the preparation of the woad vat, then the peat is to be
pulverized, and submitted to the process of fermentation, by placing it in heaps
and applying water till it becomes of that state or condition to be suitable, and 3
this will readily be judged of by a workman acquainte l with the production
of the substance, as heretofore practised in obtaining it from the plant now
in me.
In applying oak bark, or the stalks, stems, and other parts of the hop plant,

page_text: in the manufacturing or producing the substance used by dyers called woad,
such oak bark, and the stems or stalks and other parts of the hop plant, are
when dry to be ground into a powder, and which is to be treated in a similar
manner to the powder or balls prepared from the plant heretofore employed
in order to produce fermentation; and the maturity of the process of fer-
mentation is to be judged of in like manner as if the prepared material from
the ordinary plant was being fermented. And having completed the process of
fermentation, the material thus produced will then be ready to be prepared or
manufactured into the woad vat, in precisely the same manner as heretofore
pursued when using the fermented product of the plant called woad, or the
plant now cultivated for the purpose of making or preparing what is by dyers
called woad.
Having thus described the nature of our Invention, and the manner of
carrying the same into effect, we would remark that what we claim as our
Invention is the manufacturing or preparing of the substance called woad for
blue dyers by the application of shumac, peat, oak bark, and the stalks, stems,
or other parts of the hop plant, as a substitute for the plant called woad, that is,
the plant now cultivated, which being prepared by grinding and fermentation
is, when applyed by dyers for dyeing blue and other colours, called woad, as
above described.
In witness whereof, I, the said William Gilyard Scarth, have hereunto
set my hand and seal, this Twenty-sixth day of August, in the year of
Our Lord One thousand eight hundred and thirty-civ