A STOVE OR GRATE ON AN IMPROVED PRINCIPLE
Year: 1795

page_text: WEIGHTMAN'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, RICHARD
WEIGHTMAN, late of Carlton upon Trent, in the County of Nottingham, but
now of London, Gentleman, sendeth greeting.
WHEREAS His present Majesty King George the Third, by His Royal
Letters Patent, bearing date on or about the First day of this instant July,
in the thirty-fifth year of His reign, was graciously pleased to grant to me,
the said Richard Weightman, my exors, adññors, and assigns, and my and
their deputy and deputies, servants and agents, the sole making and vending
"A STOVE OR GRATE ON AN IMPROVED PRINCIPLE," within that part of His
Majesty's Kingdom of Great Britain called England, His Dominion of
Wales, and Town of Berwick upon Tweed, for the term of fourteen years;
in which said Letters Patent is contained a proviso for me, the said Richard
Weightman, to describe and ascertain the nature of my said Invention, and in
what manner the same is to be perforined, by an instrument in writing under
my hand and seal, and cause the same to be inrolled in His Majesty's High
Court of Chancery within one calendar month next and immediately after
the date of the said Letters Patent, as in and by the same, relation being
thereunto had, may more fully and at large appear.
NOW KNOW YE, that in compliance with and performance of the said
proviso, I, the said Richard Weightman, do hereby describe and ascertain
the nature of the said Invention, and in what manner the same is to be
performed, in manner following (that is to say):-

page_text: Take iron or steel or any other metal or composition that will stand the heat
of the fire and can be manufactured fit for the purpose, and work the same
into such form or forms as is or aro described in and by the Drawings or
Figures respectively drawn or represented in the margin hereof, enlarging or
diminishing the size as occasion may require. The improvement may be
applied to any sort of stove, grates, or kitchen ranges, and are also applicable
to every machine that holds fire; and if to a close fronted or what is commonly
called a register stove be added a register flap or top, as hereafter described,
instead of the old flap or top that has hitherto been used, and the fire will be
found to draw much better and burn clearer, as well as cast a greater heat
into the room. This new flap or register top may be either formed circular or
flat, or of any size and shape, with flutes or with holes through, and a plato
is made after the same manner to fit upon or under the same, to be made
moveable, by a key or any other contrivance answering the same purpose, from
the centre boss or any other part of the stove, to slide either backwards or
forwards to the left hand or to the right, or to rise upwards and fall
downwards, as may be most convenient to the construction of the chimney,
so that the draught of air proceeding through the flutes or holes becomes
opened and shut át pleasure, by which means the draught of the chimney, as
well as the heat in the room, is increased or decreased in proportion as the
flues or holes opened, which is more fully explained in the Drawings marked
A and B. The first of which (A) represents a circular top or register flap
open. The second (B) represents a flat top or register flap shut. The back
part of the stove is in two or more pieces, the front piece next the fire,
properly called a register back, is moveable, being suspended upon hinges,
pivots, or centres, from the top of cach cheek or from the fixed part of the
back or frame above the fire. The register back may be made plain and solid,
or with flutes, or with a hole or holes in it, and connected with the same is
fixed a valve, tube, or air pipe, which is introduced into any part of the gut
of the chimney, and may in most cases be concealed from the eye, and may be
'made of iron, metal, bricks, stone, composition, or any other substance that
will stand the heat, to which valve, tube, or air pipe is fixed a rogister stop or
slider, by which means it can be opened or shut at pleasure, so as to suit the
different draughts of chimneys, and the appearance of smoke will be very
much reduced if not entirely consumed, which will produce a clear fire, and a
much greater heat will be discharged into the room. At the bottom of the
moveable register back is a foot or shelf projecting into the fire, or fixed closo
under the same, which may be joined to the register back or loose, and made
of iron or any metal or any composition that will withstand the heat of fire.

page_text: Both of these are moveablo backwards or forwards by means of a worm or
worms, a screw and handle, a key, or any contrivance that answers the same
purpose,. from the front or any other part of the stove or chimney front. The
utility of this part of the Invention is to increase or diminish the space that
holds the fire, and when moved quite forward, the foot or shelf being drawn
over the grating or bottom of the fire, or close under the same, prevents the
air from leading the fire, and consequently it will go out, and when moved
quite backwards the same foot or shelf uncovers the mouth of the inclosed ash-
pit, box, or receiver (next to be described), into which the ashes, coals, and
fire may be thrown when not wanted in the fore part or body of the grate.
For a further explanation of this, see the Drawings marked C and D.
C represents the back of the stove next the fire; D, the back of the same next
the brickwork of the chimney. The space under the fire is inclosed, which
forms the ash-pit, box, or receiver before mentioned, and may be made of iron
or other metal, of stone, bricks, or any production; of nature or art,.so that. the
same does not burn or consume, and is required to be made air-tight. In the
front of this there is a contrivance, to open and shut, by which the ash-pit, box,
or receiver may be emptied of the ashes, cinders, and coals that fall from the
fire, and into this ash-pit, box, or receiver external air, the air of the room, or
from any other part of the building, may be introduced by means of a hole,
tube, or channel through the grating or bottom of the fire, which passing
upwards through the body of the fuel in the grate causes the same to burn
more briskly, and a slider or stop may be fixed to any part of the stove or
room to shut the whole tube or channel through which the air comes, should
the fire burn too fast. The Drawing E represents the front of the 'inclosed
ash-pit, box, or receiver. Any one or more or altogether of these improve-
ments may be applied to all sorts of stoves or grates, either to the polished
loose standing ones, or to the cast, fronted, Forrest, Bath, or pantheon stoves, as
more fully appears by the Drawings F, G, H, and I. F represents a polished
or loose stove; G. a Forrest or Bath stove; II, a pantheon or circle stove;
I, an inclosed or what is commonly called a register stove. The part of the
improvements represented by the Drawings C and E is peculiarly useful when
applied to kitchen grates, to which may be fixed a smoke jack with an
additional power from the axle of the worm wheel by an extra pinion and
wheel, by which means the size of the jack is very much reduced, and con-
sequently may be used to answer in the modern shallow chimnies where others
could not be fixed, and will be found in most cases a compleat cure for smoky
chimnies, as well as a great saving in the consumption of fuel. This more
fully appears by the Drawing marked K, and when the chimney is a very

page_text: smoky one, by adding the improvement A or B, called a top or register flap,
that nuisanco will be effectually removed. And the said Richard Weightman
doth hereby declare and aflirm that the particulars above set forth do contain
a full, true, and perfect description of the nature of the said Invention.
In witness whereof, the said Richard Weightman bath hereunto set 5
his hand and seal, the Twenty-fourth day of July, in the year of
our Lord One thousand seven hundred and ninety-five.
quare,
EDWARD FREDERICK EVANS.
AND BE IT REMEMBERED, that on the Twenty-seventh day of July, in
the year of our Lord 1795, the aforesaid Richard Weightman 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 1
above written. And also the Specification aforesaid was stampt according
to the tenor of the Statutes made for that purpose.
Inrolled the Twenty-seventh day of July, in the year of our Lord One
Inrolled the Twenty-seventh day of July, in the year of our Lord One
thousand seven hundred and ninety-five.