IMPROVEMENTS IN WITHDRAWING, AIR OF VAPOURS FROM FURNACES OR OTHER APPARATUS, AND IN CONDENSING AND. EMPLOYING SUCH VAPOURS
Year: 1846

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
WATSON; of Newcastle-upon-Tyne, Brassfounder, send greeting.
WHEREAS Her present. most Excellent Majesty Queen Victoria,. by Her
Royal-Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Sixth day of January, in the ninth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said Henry
Watson, my exors, adñiors, and assigns, Her especial licence, full power, sole
privilege and authority, that I, the,said Henry Watson, my exors, adñiors, and
assigns, or such others as I, the said Henry Watson, my exors, admiors, or
assigns, should at any time agree with, and, no others, from 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 Ber-
wick-upon-Tweed, my. Invention of "IMPROVEMENTS IN WITHDRAWING, AIR OF
VAPOURS FROM FURNACES OR OTHER APPARATUS, AND IN CONDENSING AND. EMPLOYING
SUCH VAPOURS;" in which said Letters Patent is contained a proviso, that I,
the said Henry Watson, shall cause a particular description of the nature of
my said Invention, and in what manner the same is to be performed, to be.
inrolled. in Her 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.
NOW KNOW YE, .that in compliance with the said proviso, I, the said
Henry Watson, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by..the following statement thereof, reference being had to
the Drawing hereunto-annexed, and to the figures and letters marked thereon
་

page_text: My Invention consists of a mode of arranging or combining apparatus to
be used with steam, to obtain a draft to flues of furnaces or apparatus, and
thereby withdrawing air and vapours therefrom, and causing some classes of
vapours to be condensed for use.. And in order that my Invention may be
fully understood and readily carried into effect, I will proceed to describe the
means pursued by me.
DESCRIPTION OF THE DRAWING.
Figure 1 represents a section of parts of a flue from a furnace or an open-
ing or passage from apparatus, where it is desired to obtain a draft. Across
this flue or passage a, a, is placed a cone, or figure with inclined sides 6, which
should be made capable of sliding in order to adjust it to the correct position,
so that there shall be no return or back draft, which will readily be ascer-
tained by holding a lighted taper at the point c, and if the flame flows into
the cone then it is a back draft, and the cone should be moved till there is no
inclination of the flame into the cone; and when once adjusted, and the steam
jet continued under the same pressure, the cone will act correctly, but will
require readjusting if for any purpose the pressure of steam is materially
increased or decreased. d is a steam pipe leading from a steam boiler, by
which a jet or flow of steam is to be kept up; the nozzle of this steam pipe
stands within the cone, and at a distance from the truncated end thereof. The
effect of thus using a cone together with a jet will be, that a much greater
result will be obtained and a more extensive draft effected than when a jet or
jets of steam are used in flues or passages without having the aid of a cone;
and I would here remark, that I am aware that jets of steam have before been
used in flues and passages to obtain a draft therein, and I make no claim to
the simple use of steam for such purposes when uncombined with the use of
a cone. I have thus far described the Invention when only required for the
purposes of withdrawing air and vapours from furnaces or other apparatus. I
will now describe the means of condensing vapours when operating on lead or
other matters in furnaces or apparatus, so as to prevent the useful products
being carried into the air, and lost. Figure 2 shows a section and plan of a
condensing apparatus which I employ for such purposes; but the arrangement of
the condensing-apparatus may be varied, so long as a withdrawing of products
through it is required. This condenser consists of a vessel a, a, divided into
several compartments, each containing water, or it may be water with chemicals
to act on the vapours which are to pass into the same in order to produce
chemical changes; but I make no claim to the same, so long as the mode of
obtaining a draft according to my Invention. be not combined therewith. € is
the flue from a furnace or passage from apparatus from which it is desired

page_text: to withdraw vapours, and to condense the same, to obtain products for use, as
has heretofore been proposed, when other means have been resorted to for
obtaining the necessary draft; f, f, are a series of partitions which descend into
the water, so that the vapours cannot pass to the flue 9 without passing under
the water, and thus being subjected to its action, by which the condensable
parts will be received into the water; h, h, are partitions, by which the water
is retained from being driven towards the end; i, i, are pipes, with cocks, to
allow of drawing the water from one compartment to another; j is a pipe for
admitting a flow of water in the condenser when desired; and k is a pipe
for drawing off water from the apparatus. The other parts of the apparatus are
similar to those of Figure 1, and are marked with the same letters of reference
as used, and the description above given will apply to the same parts. The
effect of using this arrangement of apparatus will be, that a partial vacuum
will be obtained in the condenser, by which the vapours coming in at e will
press forward, as indicated by the arrows, and will pass under the partitions,
and, consequently, under the water, and thus be deprived of the condensable
parts, whilst the other parts will pass out of the cone.
Having thus described the nature of my Invention, I would have it under-
stood that I do not confine myself to the details shown, so long as the peculiar
character of my Invention, be retained; but what I claim is, tho mode of
obtaining drafts for withdrawing air and vapours from furnaces and apparatus,
and for condensing such vapours by employing cones and jets of steam, as
herein described.
In witness whereof, I, the said Henry Watson, have hereunto set my
hand and seal, this Fourth day of July, in the year of our Lord One
thousand eight hundred and forty-six.
HENRY (L.s.) WATSON.
AND BE IT REMEMBERED, that on the Fourth day of July, in the