A NEW PLAN FOR IMPROVING AND ERECTING LIKE KILNS, WHEREBY A VERY CON- SIDERABLE SAVING IS MADE IN FUEL, AND THE LIME MOST PERFECTLY BURNT IN A SHORT TIME, WHICH I DENOMINATE GRELLIER AND BOOKER'S LIME KILN
Year: 1809

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME. I, NUGENT
BOOKER, of Lime Hill, in the City of Dublin, send greeting.
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 Fourth day of May,
in the forty-ninth year of His reign, give and grant unto me, the said Nugent
Booker, my exors, admors, and assigns, during the term of years therein
mentioned, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, my Invention of
"A NEW PLAN FOR IMPROVING AND ERECTING LIKE KILNS, WHEREBY A VERY CON-
SIDERABLE SAVING IS MADE IN FUEL, AND THE LIME MOST PERFECTLY BURNT IN A
SHORT TIME, WHICH I DENOMINATE GRELLIER AND BOOKER'S LIME KILN;" in which
said Letters Patent there is contained a proviso obliging me, the said Nugent
Booker, by an instrument in writing under my hand and seal, to cause a
particular description of the nature of my said Invention, and in what manner
the same is to be performed, to be inrolled in His Majesty's High Court of
Chancery within two calendar months after the date of the said recited 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 the said proviso, I, the said
Nugent Booker, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained as follow, that is to say :-
I do improve and erect lime kilns by forming the mouth or upper aperture
thereof much smaller and more contracted than the mouth of the common

page_text: kiln for burning running lime; and I do surround the said mouth with a
metallic ring or other suitable facing, for the purpose of affording a more
accurate flat surface at the upper part of the said kiln than would otherwise be
had, and of preventing injury to the said upper part by accident or violence;
and farther, I do place upon the mouth of the said kiln a chimney or cap, made
of cast iron or other fit material, of such dimensions and so formed that the
lower part of the said chimney or cap shall be applied by a correspondent
surface to the metallic ring or other suitable facing aforesaid, and shall fit
thereto, and be capable of being slided thereon in such manner that the mouth
or upper aperture of my said kiln shall be closed by the said chimney or cap
when duly placed, excepting with regard to the passage in and through the
said chimney or cap; and I do make my said chimney or cap conical or con-
tracted in the horizontal sections thereof as it rises; and I make the upper part
or apex thereof to terminate in a perforation usually not more than a few inches
in diameter; and I do occasionally, according to the weather, the nature of the
fuel, or other circumstances, apply or affix a pipe or tube to the said perforation,
in order to increase the draught; and, moreover, in order to render the operation
of sliding the said chimney or cap upon the metallic ring or suitable facing
herein-before described, so as either to close or open the mouth of my
kiln at pleasure, I do place and fix certain guides or sliders and stops upon
the said metallic ring or facing, by which the said motion of sliding is duly
confined and directed; or otherwise, in preference, I do fix and attach the said
chimney or cap unto the said ring or suitable facing by means of a pin, pivot,
or bolt passing through a flange part or other projecting piece at or near the
circumference of the lower aperture of the said chimney or cap, into the said
ring or suitable facing; and I do slide the said chimney or cap so as either to
close or open the mouth of my said kiln at pleasure, by a motion upon the said
pin, pivot, or bolt, as a centre; and, farther, (because my said kiln is thus closed
at the top), I do make certain apertures for ventilation at the quarters thereof;
and in large kilns I make a flue or flues near the middle or centres of the
same, which afford the advantage of a central draught, as well as preventing
the lime from hanging or remaining in the kiln.
said
And, lastly, I do declare that my said lime kilns, so improved and erected, do
constitute a kind of air furnace by which the lime is more equally, speedily,
and perfectly burned, and in larger pieces than heretofore, and that much fuel
is saved, because the heat is not conducted off from the surface, nor diminished
by the irregular action of the winds, rain, and sun; and the lime is better
and more uniformly compleated therein; and that the form, structure, and
manipulation of and with my said kiln do afford a great saving of labour, and

page_text: a considerable accommodation in drawing the lime, and charging the furnace
repeatedly on the same day when required.
In witness whereof, I, the said Nugent Booker, have hereunto set my
hand and seal, the Third day of July, in the year of our Lord One
thousand eight hundred and nine.