IMPROVEMENTS IN PREVENTING OR CURING WHAT ARE TERMED SMOKEY CHIMNEYS
Year: 1834

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDMUND
YOULDON, of Exmouth, Schoolmaster, send greeting.
WHEREAS IIis present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, hearing date at
Westminster, the Fifth day of August, in the fifth year of IIis reign, did,
for Himself, His heirs and successors, give and grant unto me, the said
Edmund Youldon, His especial licence, full power, sole privilege and
authority, that I, the said Edmund Youldon, my exors, adñiors, and
assigns, or such others as I, the said Edmund Youldon, my 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 law-
fully might make, use, exercise, and vend, within England, Wales, and the
Town of Berwick upon Tweed, my Invention of "IMPROVEMENTS IN PREVENTING
OR CURING WHAT ARE TERMED SMOKEY CHIMNEYS;" in which said Letters Patent is
contained a proviso that I, the said Edmund Youldon, 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 Ilis said Majesty's High Court of Chancery
within two calendar months next and immediately after the date of the said
in part recited Letters Patent, as in and by the same, reference being there-
unto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Edmund Youldon, do hereby declare 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 description thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say:-

page_text: Figure 1 represents an apparatus constructed according to my improvements.
Figure 2 is a vertical section thereof; Figure 3 is a transverse section thereof;
and Figures 4 and 5 show detached parts of the same. In each of these Figures
the same letters of reference indicate similar parts, a being the outer casing of
zinc or other suitable material. b, b, are openings formed for the passage of
air and smoke; these openings are covered in one direction by the curved
plates or wind guards c, c, the object of which will be hereafter described.
d, d, are four curved vanes affixed to the axis or shaft e; these curved vanes
are also affixed to the hoops or stays f, f, for the purpose of keeping them in
their proper positions, as shewn in the Drawing. The shaft or axis c turns in
bearings at g, g, there being a box or cover to prevent the smoke or dirt
getting to the point of bearing; on to the axis e is affixed a toothed wheel, which
takes into and drives the pinion on the shaft h, which also turns in bearings at
the points g, g, as shown in the Drawing, these bearings being supported by
the cross framings i within the casing a, and the upper one by the cover j, for it
will be seen that there is no passage for the air and smoke to pass at top other
than by the openings b, b, which I prefer should be the case; on the axis h is
aflixed a circular fan or wheel k, shown separately at Figure 4; this circular
fan is constructed similarly to those used for smoke jacks and for ventilators.
e is a stop, which fills up that part of the outer casing a which is not occupied
by the fan wheel, and thus is prevented the passage of smoke, except between
the vanes or spokes of the fan wheel . Figure 5 represents a plate of zinc,
which is the material I commonly use, but do not confine myself thereto, as any
other suitable material may be employed. This plate of zinc has eight open-
ings formed therein, whilst the part of the metal which is cut to form the
opening is curved, as shown in the Drawings, and thus form wind guards to
the openings, by which the wind is prevented entering such openings excepting
in certain directions, by which means only about three of the openings will be
open to receive the wind, whilst the other openings may be said to be the tail
part of the mill, through which the wind that actuates the vanes d, d, will
again pass off, carrying with it any smoke which may be in the upper part of
the apparatus.
Having thus described the various parts of the apparatus, I would remark
that it will be evident that the wind, in whatever direction it may blow, will bo
entering some of the openings b, and thereby actuating the vanes d, and caus
the axis e to turn, and by the wheel work give an encreased motion to the far
wheel on the axis h, and the vanes being set in a proper direction will, by its

page_text: rapid revolution, create an exhaustion below and a consequent draft to the
chimney on which this apparatus is fixed.
I would also remark that I am aware that fan wheels have been before used
similar to the one I have described for producing a draft in chimneys. I do
not, therefore, claim the production of a draft by such means, and it will be
desirable to state that I do not lay claim to any of the parts separately, nor do
I confine myself to having two shafts for the vanes d and the fan k, as it will
be evident that they may be both attached to one, though I prefer that the
fan wheel should have a faster revolution than the vanes d, as above
described.
Having now described the nature of my Invention, and the manner of using
the same, I would have it understood that what I claim as my Invention is, the
combining the action of the vanes d with the fan wheel k, whereby the wind, in
giving motion to the vanes d, cause the fan wheel to create an exhaustion
below it and a consequent draft up the chimney, and thus prevent or cure what
are termed smokey chimnies.
In witness whereof, I, the said Edmund Youldon, have hereunto set
my hand and seal, this Thirtieth day of September, in the year of our
Lord Oue thousand eight hundred and thirty-four.