INVENTION OF A METHOD OF HEATING THE WATER AND STUFF IN VATS FOR MAKING PAPER BY STEAM
Year: 1793

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, WILLIAM
SCOTT, Plumber, and GEORGE GREGORY, Tin Plate Worker, both of Edinburgh,
send greeting.
WHEREAS the King's most Excellent Majesty, by Letters Patent under
the Great Seal of Great Britain, bearing date the Sixteenth day of August,
in the thirty-third year of His reign, gave and granted unto the said William
Scott and George Gregory, their executors, administrators, and assigns,
His Majesty's especial licence, full power, sole privilego and authority,
that they, the said William Scott and George Gregory, their exccutors,
administrators, and assigns, and every of them, by themselves, or by their
deputy or deputies, servants or agents, or such others as they, the said
William Scott and George Gregory, their executors, administrators, or assigns,
shall 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 their "INVENTION OF A METHOD OF HEATING THE WATER
AND STUFF IN VATS FOR MAKING PAPER BY STEAM," being a principle intirely
new, within that part of Great Britain called England, the Dominion of Wales,
and Town of Berwick-upon-Tweed, in such manner as to the said William
Scott and George Gregory, their executors, administrators, and assigns, or any

page_text: of then, should in their discretions seem meet. And that they the said
William Scott and George Gregory, their executors, administrators, and assigns,
should and lawfully might have and enjoy the whole profit, benefit, commodity,
and advantage from time to time coming, growing, accruing, and arising by
ronson of the said Invention, for and during the term of years therein men-
tioned; to have hold, exercise, and enjoy the said licence, powers, privileges,
and advantages therein-before granted or mentioned to be granted unto the
said William Scott and George Gregory, their executors, administrators, and
assigns, for and during and unto the full end and term of fourteen years from
the date of the said Letters Patont next and immediately ensuing, and fully to
be complete and ended, according to the Statute in such case made and pro-
vided; in which said Letters Patent is contained a proviso that if the said
William Scott and George Gregory should not particularly describe and
ascertain the nature of their said Invention, and in what manner the same
is to be performed, by an instrument in writing under their hands and seals,
and cause the same to be inrolled in His Majesty's High Court of Chancery
within one calendar month next and immediately after the date of the said
Letters Patent, that then the said Letters Patent, and all liberties and advan-
tages whatsoever thereby granted, should utterly cease, determine, and become
void, as by the said Letters Patent, relation being thereunto had, will more
fully and at large appear.
NOW KNOW YE, that the said William Scott and George Gregory, in
pursuance of and compliance with the said proviso in the said Letters
Patent contained, and the purport and true intent and meaning thereof, and
of His Majesty's said most gracious intentions, do, by this instrument in writing
under their hands and seals duly executed, describe and ascertain the nature
of their said Invention, and several of the methods by which the same may be
performed, that is to say :-
Their Invention is for heating water and other stuff in vats for making paper
by introducing steam. This may be done by means of apparatus constructed in
different ways, according to the convenience of paper makers, and the local
situation of their vats. The common and ordinary method now in use for
heating water and other stuff' in vats for making paper is by introducing fuel
into a pan or vessel placed within the vat, which not only consumes a large
quantity of coal, but is likewise uncertain and irregular in the heat. Their
Invention, however, of heating by means of steam not only saves a very great
quantity of fuel, and makes the heat more equal and much easier regulated
but is also attended with many other advantages to the paper making, such as

page_text: a great saving of labour, making the paper free from a great part of the dust
and nastiness which unavoidably mix with it from the heating the vats by fuel,
a saving in the waste of the vessels employed, besides other advantages. They
shall now give a general description of several methods among many others
which may occur in practice, of introducing the steam. In situations which will
admit that the boiler which contains the water for producing the steam may
be sunk below ground, so as that the top may be a few inches below the
bottom of the vats, such as in Figure No. 1, R, an opportunity is given, by
placing the steam tube G on an ascent, for the condensed steam to return back
into the boiler, which prevents a waste of water. In case the situation is un-
favourable for sinking the boiler No. 2 below ground, then the steam conduct-
ing tubes must be conveyed in at the top; and, in order to get rid of the steam
that must necessarily condense in the vessels, there must be a valve, with a
ball so constructed at the bottom of each of the steam veasels, No. 2, S, as
that when there is a certain quantity of condensed steam in the bottom of the
steam vessels it may float the ball, and by that means make the condensed
steam run off. That the application of their Invention may be seen they have
made out a Drawing, to which they here refer.
- No. 1, A, a fireplace, with ash-pit below it.
No. 2, B, a boiler that contains the water for producing the steam.
No. 3, C, the cover of the boiler, which is fixed on with screws and cement
to prevent the steam escaping.
No. 4, D, a valve fixed on the top of the boiler, to let the overplus of steam
escape.
No. 5, E, a funnel for filling the boiler with a tube that descends within
about two inches of the bottom of the boiler, that no steam may escape until
the water is nearly exhausted, when the boiler must be filled again.
No. 6, F, a tube and cock for drawing the water occasionally from the
boiler.
No. 7, G, a tube for conveying the steam into the different vessels
marked I, K, L, M, for heating the water and stuff in the vats.
No. 8, H, the cocks for regulating the heat by admitting more or less steam
into the vessels.
No. 9, I, K, L, M, several forms of vessels for admitting the steam for
heating the water and other stuff in the vats for making paper.
No. 10, N, O, P, Q, small pipes or tubes annexed to the steam vessels
I, K, L, M, for allowing the cold air to escape, and inducing a full circulation
of steam through the vessels.

page_text: No. 11, R, the vats which contain the water and stuff for making the
paper.
In witness whereof the said William Scott and Georgo Gregory have
hereunto severally set their hands and scals, this Thirty-first day of
August, in the year of our Lord One thousand soven hundred and
ninety-three.
JA' GIBSON,
Clerk to His Majesty's Signet.
JOHN MARTHUR,
Servant to Gibson.
James Gibson, Clerk to His Majesty's Signet, maketh oath and saith, that
he did see William Scott and George Gregory, in the deed poll hereunto
annexed, severally sign, seal, and, as their act and deed, in due form of law
deliver the said deed poll, and at the same time subscribe and indorse severally
their names on the Drawing mentioned and referred to in the said deed poll, in
the presence of John Mac Arthur, Servant to the said James Gibson, and this
deponent. And that the names William Scott and George Gregory, appear-
ing to be set and subscribed at the foot of the said deed poll as the partics
severally executing the same, and indorsed on the said Drawing (referred to
in the said deed poll), and James Gibson and John Mac Arthur set and
subscribed to the said deed poll as witnesses, attesting the due execution of
tho
same, and as witnesses to the said William Scott and George Gregory
severally subscribing and indorsing their names on tho said Drawing, are of

page_text: the respective proper hands writing of the said William Scott, George
Gregory, John Mac Arthur, and this deponent,