CURIOUS STOVE OR GRATE,
Year: 1781

page_text: SHARP'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, JAMES
SHARP, of Leadenhall Street, in the City of London, Ironmonger, sends
greeting.
WHEREAS the King's most Excellent Majesty, by His Letters Patent
under the Great Seal of Great Britain, bearing date the Twenty-first day of
August last, gave and granted unto the said James Sharp, his executors,
administrators, and assigns, His Majesty's special licence, full power, and sole-
priviledge and authority, for the said James Sharp, his executors, adminis-
trators, and assigns, and every of them, by himself or themselves, or by his or
their deputy or deputies, servants, or agents, or such other as he, the said
James Sharp, his executors, adñiors, or assigns, should at any time agree
with (not exceeding the number of five), and no other, from time to time and
at all times during the term of fourteen years therein expressed, to make, use,
exercise, and vend his new invented "CURIOUS STOVE OR GRATE, ANSWERING
EVERY PURPOSE OF THE AMERICAN, GERMAN, OR REGISTER STOVES, BUT IN ITS EFFECT
SUPERIOR TO ANY OF THEM, FOR THE WARMING OF ROOMS, CHURCHES, OR HALLS, WITH
TOWER OF INCREASING OR DIMINISHING THE HEAT THEREOF, AND WITHOUT CONSUMING
SO MUCH FEWELL AS OTHER STOVES HERETOFORE DISCOVERED," to have, hold, use,
exercise, and enjoy the said licence, power, priviledge, and advantage, to the
said James Sharp, his executors, administrators, and assigns, for the term of
fourteen years from the date of the said Letters Patent next immediately
ensuing, and fully to be compleat and ended according to the statute in that
case made and provided; in which said Letters Patent is contained a proviso,
that if the said James Sharp should not particularly describe and ascertain
the nature of the said Invention, and in what manner the same is to be per-
formed, by an instrument in writing under his hand and seal, and cause the

page_text: same to be inrolled in His Majesty's High Court of Chancery within four
calendar months next and immediately after the date of the said Letters
Patent, that then the said Letters Patent, and all liberties and advantages
whatsoever thereby granted, should utterly cease, determine, and become void.
NOW KNOW YE, that I, the said James Sharp, in pursuance of the said
proviso in the said Letters Patent contained, do hereby declare that the nature
of my said Invention, and the manner in which the same is to be performed,
appears and is described in the Drawing hereunto annexed.
In witness whereof, I, the said James Sharp, have hereunto set my
hand and seal, this Eighteenth day of October, in the year of our
Lord One thousand seven hundred and eighty-one.

page_text: FIGURE 1. A Stove compleat which may be varied into any other shape or pattern, and made of cast or
wrought iron or other metal/a/is the hollow base open at the back upon which the body of the stove stands
whereby the hole which communicates with the external air (whether it be made through the hearth or the back
of the chimney) can be more easily and conveniently covered with any additional brick, stone, or Tyle work so that
the whole may easily be removed, and replaced as occasion may require, and also through the base an
obtained the full width of the stove from the external airhole into the air box.
opening is
bb/The holes in the front of the base for the admission of cold air when the room is too hot, which holes may be
made in any other part of the base that may suit the situation better having each a ventilator.
fee The holes and shutters through which issues the warm fresh air.
Fig 2 Is the hollow base separate from the stove.
(a, a, a) Is the hollow through which the air passes (b, b) are the holes in the front of the base as obove described,
having each a ventilator acting in the front on receiving the cool air
Fig 3&4 are the two backs which form the air box and which being screwed together face to face form a communi-
-cated passage or air box for warming the external fresh air, and these/a, b, c) the partitions are made horizontal
whereby an opening is obtained for the admission of fresh air agreeable to the base above mentioned the whole width
of the stove, and the air is never compelled to descend in the air box in consequence of which a much greater quan
-tity of fresh air will be introduced. Fig 5(a) Is the Funnel applied at the top of the stove whereby the whole stove
may be placed in any chimney without being fixed therein either by brick or stone works or iron plates being always
removable at pleasure.
6/Is the top plate, so that by this top and funnell the stoves are rendered applicable to any chimney or by length of funnell
to any place without a chimney.
And by the alterations in the air box a much greater quantity of warmed fresh air is introduced than could possibly be
in their former state, and by the hollow place they may be applied with much greater effect to the external air and are al-
-ways moveable for cleaning sweeping and repairs.