A CERTAIN MACHINE OR MACHINES (BY ME INVENTED, FOR EFFECTUALLY PREVENTING CHIMNEYS SMOAKING, PRESERVING THE SAME FROM TAKING FIRE, AND DIMINISHING THE CONSUMPTION OF COALS WITHOUT LESSENING THE HEAT.)
Year: 1763

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, 1, GEORGE
YATES, of the Parish of Saint George the Martyr, in the County of Middlesex,
Esquire, send greeting.
WHEREAS IIis present Majesty, by His Royal Letters Patent, bearing date
on or about the Tenth day of November last, in the fourth year of His reign,
was graciously pleased to grant unto me, my executors, adñiors, and assigns,
the sole making, vending, and placing up "A CERTAIN MACHINE OR MACHINES
(BY ME INVENTED, FOR EFFECTUALLY PREVENTING CHIMNEYS SMOAKING, PRESERVING
THE SAME FROM TAKING FIRE, AND DIMINISHING THE CONSUMPTION OF COALS WITHOUT
LESSENING THE HEAT.)" within that part of His Majesty's Kingdom of Great
Britain called England, Dominion of Wales, and Town of Berwick-upon-
Tweed, for the term of fourteen years, according to the Statute in that case
made and provided.
NOW KNOW YE, that I, the said George Yates, in compliance with and
performance of a provisoc or condition in such Letters Patent contained, do
hereby describe and ascertain the nature of my said Invention, in manner
following (that is to say):-
Place a gothic arch of about thirty inches height on a stove, leave the point
or summit of the said arch open, upon such opening place a cylinder of about

page_text: nine inches diameter and about twelve inches height for the smoak to pass
through, spread a plate horizontally over the whole cavity of the chimney, and
into the center thereof introduce the upper end of said cylinder; let one part
of said plate turu upon hinges, so as to be let down occasionally and remove
the soot which shall from time to time fall thereon; this in most cases will
effectually cure the smoaking, and in all cases increase the warmth of the
room with a less quantity of coals. When the above machine does not effect
the purpose intended, place the following machine upon the top of the chimney
(that is to say)-Place the bass of a cone of about twelve inches upon
the top of the chimney, so as to comprehend the whole cavity thereof; let
the point of that cone (which should be of about six inches diameter) be
introduced into the lower end of a cylinder of about ten inches in length and
about the diameter of the bass of said cone; upon the upper end of said
cylinder place the bass of another cone of about eight inches height and the
diameter of the former, out of the point of which it is intended the smoak
should pass; but as high winds may sometimes prevent the same, in such case
introduce the points of two or more small cones or tunnels into the lower end
of said cylinder, so that the mouths or basses of such cones or tunnels present
themselves downwards, out of which the said smoak will pass when by winds
prevented evacuating itself at the point of the upper cone; but if this should
not entirely answer the end proposed, instead of introducing the above-
mentioned small cones or tunnels in the lower end of said cylinder, place
them horizontally in the sides of such cylinder, and from the points of such
small cones or tunnels continue air pipes of about three or four inches
diameter half way down the cavity of the chimney, returning the ends thereof
upwards about three inches; or otherwise place such small cones or tunnels
with the air pipes affixed thereto upon the outside of the chimney, introducing
the ends of such pipes into the chimney about half way down the same; this
will infallibly give a draught to the chimney and prevent its smoaking for the
future. And I, the said George Yates, do hereby averr, that the above is a
true, full, and perfect description of the nature of my said Invention.
In witness whereof, I have hereunto set my hand and seal, this Fifth day
Signed and scaled (being first duly stampt),
in the presence of,
ROBERT WRIGHT.
ANGUS GREENLANT.
GEO. YATES. (L.S.)

page_text: AND BE IT REMEMBRED, that on the same Fifth day of March, in
the year last mentioned, the aforesaid George Yates came before our said
Lord the King in Ilis Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained & specified, in form above
written. And also the Specification aforesaid was stampt according to the
tenor of the Statute made in the sixth year of the reign of the late King
and Queen William and Mary of England, and so forth.
Inrolled the aforesaid Fifth day of March, in the year above mentioned.