A METHOD OF HEATING LIQUORS FOR THE MANUFACTURE OF LEATHER AND OTHER MANUFACTURES, AND FOR VARIOUS OTHER PURPOSES
Year: 1813

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
DAKING, of Bocking, in the County of Essex, Tanner, send greeting.
WHEREAS His present Majesty King George the Third, in and by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Eighth day of May instant, for Himself, His heirs, and successors,
did give and grant unto me, the said Thomas Daking, His especial licence, full.
power, sole privilege, and authority, that I, the said Thomas Daking, my exe-
cutors, administrators, and assigns, and every of them, by myself or themselves,
or by my and their deputy or deputies, servants or agents, or such others as I,
the said Thomas Daking, my executors, administrators, or assigns, should at
any time agree with, and no others, from time to time and at all times there-
after during the term of years therein expressed, should and lawfully might
make, use, exercise, and vend, within England, Wales, and the Town of Ber-
wick-upon-Tweed, my Invention of "A METHOD OF HEATING LIQUORS FOR THE
MANUFACTURE OF LEATHER AND OTHER MANUFACTURES, AND FOR VARIOUS OTHER
PURPOSES;" in which said Letters Patent there is contained a proviso, obliging
me, the said Thomas Daking, by an instrument in writing under my hand and
seal, particularly to describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, and to cause the same to be
inrolled in His Majesty's High Court of Chancery within two calentlar months
next and immediately after the date of the said recited Letters Patent, as in
and by the same, reference being thereunto had, will more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Daking, do hereby describe and ascertain the nature of my said

page_text: Invention, and in what manner the same is to be performed, by the following
description thereof, that is to say:-
A vat is constructed with fir or any other suitable material, but fir will be
the cheapest, the sides and bottom of which may be formed by well securing
three boards together, each thirty feet long, and one inch and an half thick,
and closing one end with a board of the same width as the sides, the bottom
board to be twenty-two inches wide, the side boards are to be set on the bottom
one, so that the upper surface will be thirty inches wide, and twenty-four inches
deep. A vat of this dimension will be found to contain as much liquor as is
usually required in what tanners denominate a tap or spender, but may be ex-
tended further in length or width at the upper surface if a greater quantity of
liquor is wanted to be heated; and it will be necessary to have six studs on each
side at equal distances opposite one another, which may be pinned to the sides
to strengthen them; also, six pieces across the top, dovetailed to each side
to prevent the sides from being pressed outwards by the weight of the liquor.
At the bottom of this vat is to be placed a copper pipe, about ten inches
in diameter, to extend the whole length of the inside of the vat, and to be
turned up at one end about three feet, to answer the purpose of a chimney,
which should be of less diameter than the other part of the pipe. The pipe
must be secured from rising when the vat is filled with liquor by several pieces
of wood being placed across it and fastened to the opposite sides. At the end
which is not closed, is to be constructed a common furnace, over which is to be
placed a copper vessel, to form a continuation of the wooden one, which vessel
is to cover the whole of the furnace, and to be securely attached to the pipe
and the ends of the wooden vessel. The pipe should project a few inches.
beyond the ends of the wooden vessel, to prevent the fire from communicating:
with the wood. As the whole heat of the above-mentioned furnace will be
imparted to the fluid contained in the vat by means of the copper pipe, and of:
that part of the vat which covers the furnace, the quantity of fuel require is
trifling compared with its contents, and the exhausted bark will be quite suf-
ficient for the purpose, which, in many situations, is of no value whatever.
Another advantage of this vessel to tanners will be that if placed on brickwork
about twelve inches above the level of the taps and spenders, the liquor that is
required to be heated may be conveyed into it without any additional labour;:
for instead of pumping it into the vat where it is required, it may by the same
means be conveyed into the 'above-described vessel, and heated with little
trouble, and then by means of a plug at the bottom, the liquor may be let into
a trough to convey it where wanted. Should this method prove useful for
other purposes where larger bodies of fluids are required to be heated, a similar

page_text: furnace, &c. may be constructed adjoining the other, and the vat enlarged
sufficiently for the introduction of another pipe of similar dimensions to the one
before described.
In witness whereof, I have hereto set my hand and seal, the Seventeenth
day of May, in the year of our Lord One thousand eight hundred
and thirteen.