A MACHINE FOR THE PREVENTION AND CURE OF SMOKY CHIMNEYS
Year: 1813

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
WILCOX, of the City of Bristol, Mason, send greeting.
WHEREAS His present Majesty King George the Third, in and by His
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-second day of May last, for Himself, His heirs
and successors, did give and grant unto. me, the said Thomas Wilcox, my
exors, admors, and assigns, His special licence, full power, sole privilege
and authority, that I, the said Thoma sWilcox, my exors, adññors, and assigns,
and every of them, by myself and themselves, or by my and their deputy
or deputies, servants or agents, or such others as I, the said Thomas Wilcox,
my exors, admors, or assigns, should at any time agree with, and no others,
from time to time and at all times thereafter 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
"A MACHINE FOR THE PREVENTION AND CURE OF SMOKY CHIMNEYS;" in which
said Letters Patent there is contained a proviso obliging me, the said Thomas
Wilcox, by an instrument in writing under my hand and seal, particularly
to describe and ascertain the nature of my said Invention, and 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 recited Letters Patent, as in and by the
same, reference being thereto had, will more fully appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Wilcox, do hereby describe and ascertain the nature of my said Inven-
tion, and in what manner the same is to be performed, by the Plan or Drawing
in the margin of these presents, and the following description thereof, that is
to say:
The particular object of this Invention is to counteract the effects arising
from eddy winds affecting the tops of chimnies as well as generally to increase
the draughts of chimmies to which it is applied. The construction is remarkably
simple, not liable to be out of repair, not requiring any extra expence or atten-
tion to keep it in order, it being accessible from within and capable of being
cleansed in the same manner as ordinary chimnies, and not being liable to any
greater accumulation of soot. It may be termed the smoke reverberator. The
Invention consists of a hollow cap with a funnell, and a contrivance for voiding
the smoke, to be fixed on the top of a chimney stack, with two or more courses
of brickwork to secure the same. It may be composed of copper, iron, or any
metallic substance, or of clay, and may be of any form which may suit the
fancy of persons desirous of availing themselves of the Invention. Fig. 1, 1, 1,
represents the reverberator, and some of the forms in which it may be manu-
factured. Fig. 2 shews a section of the reverberator; A, the globular
ball, which, as before stated, may be of any other shape), twenty-two inches
diameter; B, B, cavities two inches wide for voiding smoke; C, C, flanches
one inch and a half square to reverberate the draught of air which follows the
shaft of chimney externally, so as to prevent its entering the cavity of the ball
or cap, and thereby diminishing the effect arising from the rarefication of the
air within; D, a funnell, communicating with the cavity two feet eight inches
high, large enough for a boy to sweep the cavity; E shews one stay to secure
the cap or ball on the funnell D; the principal on which the reverberator acts
is by excluding all winds from the chimney, and by promoting the draught of
the chimney by means of a continual accumulation of rarefied air in the cavity.
In witness whereof, I have hereto set my hand and seal, the Sixteenth
day of July, in the year of our Lord One thousand eight hundred
and thirteen.

page_text: AND BE IT REMEMBERED, that on the Sixteenth day of July, in the
year of our Lord 1813, the aforesaid Thomas Wilcox came before our said
Lord the King in His Chancery, and acknowledged the Specification aforesaid,
and all and everything therein contained and specified, in form above written.
And also the Specification aforesaid was stampt according to the tenor of the
Statute made for that purpose.
Inrolled the Seventeenth day of July, in the year of our Lord One