AN IMPROVED FLUE OB CHIMNEY FOR FURNACES AND OTHER PURPOSES
Year: 1824

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HUMPHRY
JEFFREYS, of the City of Bristol, Merchant, send greeting.
WHEREAS His present most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Seventh day of October, in the fifth year of His reign, did, for
Himself, His heirs and successors, give and grant unto me, the said Humphry
Jeffreys, His especial licence that I, the said Humphry Jeffreys, my exors,
admors, and assigns, or such others as I, the said Humphry Jeffreys, my
exors, admors, and 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, my Invention of "AN IMPROVED FLUE OB
CHIMNEY FOR FURNACES AND OTHER PURPOSES;" in which said Letters Patent
there is contained a proviso obliging me, the said Humphry Jeffreys, by an
instrument in writing under my hand and seal, particularly to describe and
ascertain the nature of my said. Invention, in what manner the same is to be
performed, and to cause the same to be inrolled in His Majesty's High Court
of Chancery within two calendar months next and immediately after the date
of the said 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
Humphry Jeffreys, do hereby declare the nature of my said Invention to consist
in-a-flue or chimney so constructed as to cause an artificial draught in the
same, and to condense the smoke and other matters evolved in such manner

page_text: as to prevent their escape into the atmosphere; and in further compliance with
the said proviso, I, the said Humphry Jeffreys, do hereby describe the manner
in which I perform my said Invention by the following description thereof,
reference being had to the Drawing annexed, and the figures or letters
marked thereon (that is to say):-
DESCRIPTION OF THE DRAWING.
The figure in the Drawing represents a section of one of my said improved
flues. B represents the commencement of an ordinary flue proceeding from
any common furnace, the top of which is closed at C sufficiently air-tight to
prevent the escape of any smoke. This part of the flue I shall call, by way of
distinction, the smoke passage. E is a second passage or shaft, which I call the
condensing shaft, and may be built either beside the smoke passage, the central
partition wall being common to both, or at any convenient distance from it,
provided always that the apperture of this shaft be perpendicular in its wholo
length. At the top of the condensing shaft E is a cistern F, which must receive
a constant supply of water from some convenient source. The bottom of this
cistern must be perforated with small holes, so as to create an artificial shower
when supplied with water, and the said supply of water must of course be
regulated so as to meet tho waste occasioned by the said holes. At the bottom
of the shaft E is an opening or passage G, by or through which the fallen
water, condensed smoke, and all other matters which have descended, pass into
a tank or drain, as the case may be, for the purpose of conveying the same to
any convenient distance. In this Figure or Drawing the condensing shaft is
represented as separated from the smoke passage, and D represents a commu-
nication passage leading from the top of the smoke passage to the top of the
condensing shaft, into which it should enter, just under the cistern F. This
communication passage should in all cases be of as large dimensions as the
smoke passage. It should here be observed, that when the smoke passage and
the condensing shaft have one common wall to divide them, an aperture in the
said wall, corresponding to that at II in the Drawing annexed, will suffice,
without any communication passage. Now by the foregoing arrangement of
fluo or chimney it will be seen that if smoke rise from the furnace into the
smoke passage, and thence proceed into the condensing shaft, and if water be
admitted into the cistern, and suffered to pass through the said holes in the
bottom of the said cistern, down the condensing shaft, a draught will be occa-
sioned that will draw the smoke and other matter evolved from the furnace
from the smoke passage into the condensing shaft, where it will be condensed
and carried down with the falling water into the tank or drain below, as herein-

page_text: before described. And such an arrangement of a flue or chimney for the
purposes aforesaid, and effecting the draught and condensation aforesaid, in
manner aforesaid, being, to the best of my knowledge and belief, entirely new
and never before used in these kingdoms, I do hereby declare this to be my
Specification of the same, and that I do verily believe this my said Specifica-
tion doth comply in all respects, fully and without reserve or disguise, with
the proviso in the same herein-before in part recited Letter Patent contained,
wherefore I do hereby claim to maintain exclusive right and privilege to my
said Invention.
In witness whereof, I, the said Humphry Jeffreys, have hereunto set my
hand and seal, this Fifteenth day of November, One thousand eight
hundred and twenty-four.