CERTAIN IMPROVEMENTS IN THE APPARATUS FOR AND MODE OF DISTILLING, DRYING COPPEE AND SUGAR
Year: 1802

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
WYATT, of New Bridge Street, in the City of London, Merchant and Manu-
facturer, do send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Letters Patent under the Great Seal of the United Kingdom of Great Britain,
and Ireland, bearing date at Westminster, the Second day of August, in the
forty-second year of His reign, did give and grant unto me, the said Charles
Wyatt, my executors, administrators, and assigns, His especial licence, full
power, sole priviledge and authority, that I, the said Charles Wyatt, my
executors, administrators, and assigns, 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, and in all the
Colonics and Plantations abroad, my Invention of "CERTAIN IMPROVEMENTS IN
THE APPARATUS FOR AND MODE OF DISTILLING, DRYING COPPEE AND SUGAR;" in
which Letters Patent there is contained a proviso obliging me, the said
Charles Wyatt, under my hand and seal, to cause a particular description of
the nature of my said Invention, and in what manner the same is to be per-
formed, to be inrolled in His Majesty's High Court of Chancery within one
calendar month next and immediately after the said of the said recited
Letters Patent, as in and by the same, relation being thereunto had, may
more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Charles Wyatt, do hereby declare that my said Invention is described in
manner following, that is to say:-
My improvements in distilling consists of two parts, First, in applying steam
to produce the heat required for distillation, and adapting an apparatus to that
specific purpose; and, secondly, in varying the construction and disposition of com-
mon stills when fire alone is to be performed. The process for distilling by steam
is this: Steam is to be produced from water or other liquid contained in a closed
boiler, and conveyed through proper tubes or channels, either into the matter in-
tended for distillation or through it, or wholly or partially round or beneath, and
in contact with the external surface of the still or vessel in which that matter is
contained, or in any of those methods combined. that of introducing the steam
wholly and totally into the body of the liquid to be distilled, so as to be mingled
therewith, being the most effectual and advantageous. The liquid being thus
heated by the action or contact of steam, the subsequent parts of the process
proceed in the same way, or nearly in the same way, as in common distillation
over fire. Figures 1, 2, 3, represent different views of one mode of con-
structing an apparatus for this purpose; Figures 4 and 5, views of another
mode; and Figure 6 of a third mode, the uses of each part being explained
in the references. The parts essential to the system of distilling by steam may
be omitted in Figures 1, 2, 3, 4, 5, and then the apparatus will be applicable
to the common mode of distilling by fire alone, which constitutes the variation
stated to be the second part of the improvement on the mode of distilling,
this part of the Invention consisting in making the roof of the still a medium
of condensation, and applying a channel beneath that roof to conduct
the liquid arising from that condensation into the ultimate condenser. When
steam is used the vessels or stills may be made of metal, wood, brick, stone,
slate, or of any other substance or substances, capable or made capable of
containing the liquid to be distilled, and of resisting the action of steam..
The mode of drying coffee and sugar cousists in exposing those substances to
the action of air raised to the necessary degree of heat, by passing over or in
contact with a body or bodies heating by steam. If therefore any space or re-
ceptacle, admitting and discharging occasionally the external air, be allotted for
drying coffee or sugar, and that space or receptacle be heated by the access of
steam, so that none of the steam shall come into contact with either of those
substances, that construction of an apparatus will produce the éffect that I mean
to describe as my Invention. Figures 7, 8, 9, shew what I consider to be the
most convenient and expeditious mode of effecting this purpose.
This appa

page_text: ratus may be applied to the drying of other substances, such as grain, gun-
powder, &c. &c.
In witness whereof, I, the said Charles Wyatt, have hereunto set my
hand and seal, this Second day of September, in the forty-second year
of the reign of our Sovereign Lord George the Third, by the grace
of God of the United Kingdom of Great Britain and Ireland King,
Defender of the Faith, and in the year of our Lord One thousand eight
hundred and two.
CHAS WYATT. (L.S.)
Reference to Figures 7, 8, and 9:-a, box, trunk, or chamber; b, c, entrance
and exit for steam; d, cavities for steam, constructed of metal, quite steam-
tight; e, aperture for the admission of air and discharge of the cylinder;
f, aperture for the escape of air; g, cylinder to receive the substance to be
dried; h, space for warm air; i, regulator of air admitted.
Operation: Steam from a closed boiler, being introduced thro' b, fills the
cavities d, passes off' thro' c, and in it's passage warms the air contained in h,
supplied through e, and discharged thro' f. By the revolution of the cylinder
placed in the current of air thus warmed, the substances within it are dried.
AND BE IT REMEMBERED, that on the same Second day of September,
in the year above mentioned, the aforesaid Charles Wyatt came before our
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained, in form above written. And
also the Specification aforesaid was stamped according to the tenor of the
Statute in that case made and provided.
Inrolled the same Second day of September, in the year above written.