CERTAIN IMPROVEMENTS IN THE MANNER OF HEATING DRYHOUSES, MALT KILNS, AND OTHER BUILDINGS REQUIRING HEAT
Year: 1819

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
GELDART and JOHN SERVANT, both of Leeds in the County of York, Car-
penters, and JONATHAN HOWGATE, of Leeds aforesaid, Flax Dresser, send
greeting:
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WHEREAS His most Excellent' Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the First day of June,
in the fifty-ninth year, give and grant unto us, the said William Geldart,
John Servant, and Jonathan Howgate, our exors, admors, and assigns, His
special licence, full power, sole privilege and authority, that 'we, the said
William Geldart, John Servant, and Jonathan Howgate, our exors, 'admors,
and assigns, should and' lawfully might, during "the term of years therein
mentioned, make; use, exercise, and vend, within England, Wales, and "the
Town of Berwick-upon-Tweed, our Invention of "CERTAIN IMPROVEMENTS IN
THE MANNER OF HEATING DRYHOUSES, MALT KILNS, AND OTHER BUILDINGS
REQUIRING HEAT;" in which said Letters Patent there is contained a proviso
that if we, the said William Geldart, John Servant, and Jonathan Howgate,
or one of us, should not particularly describe and ascertain the nature of
our said Invention, and in what manner the same is to be performed, by
an instrument under our hands and seals, or under the hand and seal of one
of us, and cause the same to be inrolled in His Majesty's High Court of

page_text: Chancery within six 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, shall utterly cease, determine
and become void, as in and by the same Letters Patent, reference being
thereunto had, may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, we, the said
William Geldart, John Servant, and Jonathan Howgate, do hereby declare that
the nature of our said Invention, and the manner in which the same is to be
performed, are particularly described and ascertained in and by the following
description thereof, and the Drawing hereunto annexed (that is to say):-
Our method of beating dryhouses, malt kilns, and other buildings requiring
heat is by steam, which may be taken from any steam boiler, either erected
for that purpose, or from any boiler used for the purpose of working a steam
engine or otherwise, so as such boiler be in or near to the building intended to
be heated. The building intended to be heated (may, with the exception of
the floor) be erected in the common and usual way, and being so erected a
first floor must be laid or formed of flaggs, clay, or any other kind of materials
capable of enduring heat. In this floor must be made a dry well or dry wells
filled with loose stones to receive the condensed steam or other matter created
by the steam. Above such bottom floor must be laid a second or upper floor,
at the distance of four or five inches or more, according to the supposed
quantity of heat intended to be required, and such second or upper floor must
be supported by iron, metal, stone, or wood joists, at the distance of about two
feet from each other, and not more than about three inches in thickness; and
such last-mentioned or upper floor to be formed of cast iron, beat iron, stone,
pot, slate, tiles, or other materials, steam and air tight, but we recommend cast
iron. The space between the two before-mentioned floors we call a mine, for
the purposes of this our Specification. After the building intended to be
heated has been so erected near to the boiler from which steam is intended
to be taken, a conducting pipe with with a throttle valve must be fixed or laid
to convey the steam from the boiler into branch pipes, and from thence into
the mine. When the mine is by these means filled with steam the intended
building will become heated, and by continuing the steam the heat may be
raised to about one hundred and eighty degrees if necessary. As soon as the
building has received a sufficient degree of heat the throttle valve must be
closed until it becomes necessary to renew or strengthen the heat. If desired
a safety valve may be added to the mine.
As a further (though not as we consider a necessary explanation) we refer
to the annexed Drawing. The improvement to which we claim an exclusive

page_text: privilege in the mode of heating buildings is by reason of conveying steam
into the mine as aforesaid, and the heat ascending therefrom into such
buildings.
In witness whereof, we, the said William Geldart and John Servant
have hereunto set our hands and seals, the Twenty-second day of
November, in the year of our Lord One thousand eight hundred and
nineteen.