THE MEANS OF EFFECTING A SAVING IN THE CONSUMPTION OF THE ORDINARY ARTICLES OF FUEL, BY THE APPLICATION OF CERTAIN WELL-KNOWN MATE- RIALS HITHERTO UNUSED FOR THAT PURPOSE
Year: 1818

page_text: INGLEDEW'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
INGLEDEW, of Little College Street, Westminster, in the County of Middlesex,
Licensed Victualler, send greeting.
WHEREAS I, the said James Ingledew, did, by my petition, humbly represent
to His present most Excellent Majesty King George the Third that I had
discovered "THE MEANS OF EFFECTING A SAVING IN THE CONSUMPTION OF THE
ORDINARY ARTICLES OF FUEL, BY THE APPLICATION OF CERTAIN WELL-KNOWN MATE-
RIALS HITHERTO UNUSED FOR THAT PURPOSE," that I was the first and true inventor
thereof, and that the same had never been practised by any other person or
persons whomsoever, to the best of my knowledge and belief; and I humbly
prayed His said Majesty to grant unto me, my exors, adñiors, and assigns, His
Royal Letters Patent under the Great Seal of the United Kingdom, for the
sole use, benefit, and advantage of my said Invention within England, Wales,
and the Town of Berwick upon Tweed, and also in all His Colonies and Plan-
tations abroad, for the term of fourteen years, pursuant to the Statute in that
case made and provided; and whereas His said Majesty, in and by His said
Letters Patent under the Great Seal of the United Kingdom of Great Britain
and Ireland, bearing date at Westminster, the Tenth day of November, in the
fifty-ninth year of His reign, did, for Himself, His heirs and successors, give and
grant unto me, the said James Ingledew, my exors, admors, and assigns, His
especial licence, full power, sole. privilege and authority, that I, the said James
Ingledew, my exors, adñiors, and assigns, and every of them, by myself and
themselves, or my or their deputy or deputies, servant or agent, servants or
agents, or such others as I, the said James Ingledew, my exors, adiñors, or
assigns, should at any time agree with, and no others, from time to time and

page_text: at all times thenafter during the term of fourteen years therein expressed,
should and lawfully might make, use, exercise, and vend my said Invention
within that part of His United Kingdom of Great Britain and Ireland called
England, His Dominion of Wales, and Town of Berwick upon Tweed, and
also in all His Colonies and Plantations abroad, in such manner as to me,
the said James Ingledew, my exors, admiors, and assigns, or any of them, should
in my or their discretion seem meet; in which said Letters Patent is contained
a proviso that if I, the said James Ingledew, should not particularly describe
and ascertain the nature of my said Invention, and in what manner the same
is to be performed; 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 six calendar months next and immediately after the date of those
His said Letters Patent,..then the said Letters Patent, and all liberties and
privileges whatsoever thereby granted, should utterly cease, determine, and
become void, anything therein contained to the contrary in anywise notwith-
standing.
NOW KNOW YE, that J, the said James Ingledew, in compliance with
the said proviso, do hereby describe and ascertain the nature of my said
Discovery or Invention, and in what manner the same is to be performed,
used, and operate, by the Plans or Drawings hereto annexed, and in the follow-
ing description thereof, that is to say :-
My Discovery or Invention consists in the application of chalk, lime-
stone, and other calcareous substances convertible into lime, by. means of
heat, as auxiliaries to the ordinary articles of fuel in the carbonizing of coal
for gas, in heating the boilers of steam engines, brewers' and distillers'
bakers'
coppers, sugar pans and furnaces wherein great heat is required. The
manner in which this auxiliary heat is obtained is by employing the ordinary
material of fuel not only to the purposes to which it is primarily directed, but
to the further purpose of calcining the chalk, limestone, or other calcareous
substance, and thereby concentrating and keeping in action a most powerful
heat in aid of the ordinary operation of the fuel, so that a less quantity thereof
is actually required. This process may be applied in such manner as the skill
of the manufacturer may best suggest, reference being had to the uses and
purposes intended. In the application of the heat thus produced to the gene-
ration of gas, I apply the articles above mentioned in a species of lime chamber
above the ordinary fire, the retorts being placed in this chamber; and I have
found the chamber, of which I have subjoined Drawings, N° 1, with the proper
flues, &, to answer most effectually. The fire, as before observed, is placed in
a furnace beneath the lime chamber, and either coal, coke, wood, or other

page_text: articles of ordinary fuel may be used. In the application of the said Invention
to boilers for steam engines and brewers and distillers' coppers, sugar bakers*
pans, and to other similar purposes, trials have been made with success by using
the calcareous substances on the outside of these vessels, and also in a boiler of
a particular construction, the lime chamber being in the centre of the boiler;
and I have subjoined Plans or Drawings, Nos 2, 3, 4, and 5, shewing both the
external and internal application of my Invention for the combustion of chalk,
limestone, and other calcareous substances in aid of the ordinary means of
heating boilers, coppers, pans, and furnaces, for the guidance of the public in
the application of the said substances as auxiliaries to, or as a means of effecting
a saving in the consumption of the ordinary article of fuel. The particular.
construction of the lime chambers, boilers, and furnaces above mentioned is not
claimed by me as any part of my Invention; neither am I desirous of claiming.
any monopoly or privilége in the application of the chalk, limestone, or other
calcareous substances to the domestic or ordinary uses to which fuel is applied,
but merely to the uses and purposes above mentioned and alluded to. In the
use of the chalk, limestone, or other calcareous substances, it is desirable that
the pieces should be nearly of equal size, that they may become calcined at one
and the same time, and such chalk or limestone will be found to answer best
which is the least liable to vitrification. The advantages arising from my
Invention are two-fold; first, in the diminished consumption which, from this
application of the auxliary substances above mentioned, has been found to
result in the quantity of fuel required to produce any given effect; and
secondly, in the profit arising from the production of the lime in the calcination
of the chalk, limestone, or other calcareous substances applied in aid of the
ordinary fuel, the lime thus obtained in this secondary or auxiliary operation
being of greater value than the calcareous substance employed to produce it.
JAMES (L.S.) INGLEDEW.
AND BE IT REMEMBERED, that on the Tenth day of May, in the
year of our Lord 1819, the aforesaid James Ingledew came before our
said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the tenor
of the Statutes made for that purpose.