AN ENTIRE NEW MACHINE, ENGINE, OR INSTRUMENT FOR MAKING WHITE SALT, AND PREPARING BRINE TO MAKE WHITE SALT
Year: 1806

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD.
TOMKINSON, of the Town of Liverpool, in the County of Lancaster, Salt
Merchant, send greeting.
WHEREAS I, the said Richard Tomkinson, did, by my Petition, humbly
represent to His present most Excellent Majesty King George the Third
that I had, after much trouble, labor, and expence, found out and invented
"AN ENTIRE NEW MACHINE, ENGINE, OR INSTRUMENT FOR MAKING WHITE SALT,
AND PREPARING BRINE TO MAKE WHITE SALT;" that in regard I was the first
and truo Inventor thereof, and that the same had never been made or used,
by any other person or persons to the best of my knowledge and belief, I
humbly prayed His Majesty to grant unto me, my exors, admors, and assigns,
His Royal Letters Patent, under His Great Seal of the United Kingdom of,
Great Britain and Ireland, for the sole use, benefit, and advantage of my
said Invention within that part of His Majesty's United Kingdom of
Great Britain and Ireland. called England, Dominion of Wales, Town of
Berwick-upon-Tweed, and also all His Colonies and Plantations abroad,.
for the term of fourteen years, pursuant to the Statute in such case made and
provided; His said Majesty, being willing to give encouragement to all arts.
and inventions that might be for the public good, was graciously pleased to
condescend to my request, and therefore, by His Royal Letters Patent,
bearing date at Westminster, the First day of August, in the forty-sixth year
of His reign, of His especial grace, certain knowledge, and mere motion, did
give and grant unto me, the said Richard Tomkinson, my exors, admors,

page_text: and assigns, His especial licence, full power, sole privilege and authority, that
I, the said Richard Tomkinson, my exors, adñiors, and assigns, and every of
us, by himself or themselves, or by mine and our deputies or deputy, servants
or agents, or such others as I, the said Richard Tomkinson, my exors, adñiors,
and assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the said term of years therein expressed,
should and lawfully might make and exercise and vend my said Invention
within that said part of His said Majesty's said United Kingdom of Great
Britain and Ireland called England, His Dominion of Wales, and Town of
Berwick-upon-Tweed, and also in His Colonies and Plantations abroad, in such
manner as to me, the said Richard Tomkinson, my exors, adiñors, and
assigns, or any of us, should in our discretion seem meet, and I, the said Richard
Tomkinson, my exors, adiñors, and assigns, should and lawfully might have
and enjoy the whole profit, benefit, commodity, and advantage, from time
to time coming, growing, accruing, and arising by reason of the said Invention,
for and during the term of years therein mentioned, to have, hold, exercise,
and enjoy the said licence, powers, privileges, and advantages therein-before
granted or mentioned to be granted to me, the said Richard Tomkinson, my
exors, adiñors, and assigns, for and during and unto the full end and term of
fourteen years from the date of the said Presents next and 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 I, the said Richard Tomkinson, 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 enrolled in His said Majesty's High Court of Chancery within
one month 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, anything
therein contained to the contrary thereof in anywise notwithstanding, as in
and by the said Letters Patent, relation being thereto had, will more fully and
at large appear.
NOW KNOW YE, that I, the said Richard Tomkinson, in compliance
with the said proviso, do hereby describe and ascertain the nature of my .said.
Invention, and declare that the--Plan thereof drawn in the margin of these
Presents is composed of the following particulars (that is to say):-
The principle of this Invention is making white salt and preparing brine to
make white salt, by means of a hollow cylinder or pipes connected together,
or a passage or passages of any form placed in the midst of the liquid, through.

page_text: which cylinder, pipes, passage or passages, the fire shall pass (as through a
chimney, or in a similar manner to which water passes through pipes laid in
a street for the purpose of supplying houses. The pan which is to contain the
liquid may be made of any suitable materials, size, or shape, with a suitable
cylinder or cylinders, or pipes of iron, metal, or other substance, which will
withstand the force of fire, agreeable to the wish of the person or persons to
use them; but the Inventor recommends cast iron for the cylinder and pipes,
similar with the Plan annexed and the description following. The pan to be flat
or horizontally, as described by the letters A, may be fifty feet long from C to D,
and E to F, and fourteen feet wide from C to F, and from D to F; the sides
from C to G, H to E, D to R, S to F, to be perpendicular and about fifteen
inches deep, and from the sides at G, R, E, F, to meet in the middle, nearly at
an angle at the letters I, like a common water spout, making it in the middle,
that is, from a line level with the top edge on each side to where the two sides
meet at bottom, as aforesaid, three feet six inches deep (as far as the cylinder
marked L, after described, extends in the mouth), and two feet six inches deep
the remaining length thereof from O to P. The sides and ends may be made of
wood, the bottom of wood also, or of clay, covered with tiles, bricks, &c. The
fireplace is at K, placed in the cylinder L, which is of cast iron, and seven
feet long from Q to O, of an oval form, two feet three inches deep, and three
feet broad in the inside. The cylinder is fixed in the center of the front end
of the pan at Q, the end of it level with the outside of the plank; between the
cylinder and plank it is caulked with oakum; the pipes, in as many joints as
convenient (marked with the letters M), are of about nine to twelve inches
interior diameter, and are joined to the cylinder at O, and pass in a line
parallel with the angle at bottom (I), and at the distance of about four inches
from the bottom, the cylinder only being about two inches from the bottom,
pass through the other end of the pan at P (where they join a chimney); the
heat and smoke pass through such cylinder or pipes, which may be supported
on the bottom of the pan by as many bearers as requisite, so that the liquid
can freely circulate under the pipes, and a scraper or rake can pass between
them and the bottom, but the top surface of the cylinder and pipes should be
upon a level with the bottom of the pan's sides at G, R, E, F, and care should
be taken always to have the cylinder and pipes covered with liquid. In
the mouth of the cylinder at K there is a grate, and as many bars, and fixed
on as many bearers, six inches from the bottom of the cylinder, as convenient
so as to leave sufficient space for the ashes to fall and be raked off. The fire
is not to come nearer than about six inches from the mouth of the cylinder (on
account of the woodwork), so that the hatch frame and small iron door, as in

page_text: common stoves, must be placed that distance at least from the mouth of the
cylinder clear them as often as possible from the scales they are liable to
contract from the liquid. There may be more than one fire cylinder and pipes
as may be required for the size or form of the pan, &c.
The Inventor does not confine the Patent to any size or shape of the
pan, cylinder, pipes, &c., which may be made at pleasure; but wishes only
to preserve the principle of the liquid by this means, always surrounding the
fire, except just at the aperture, where it must be supplied with coals and fuel,
and from whence it communicates with the chimney.
In witness whereof, I, the said Inventor, Richard Tomkinson, have hero-
unto set my hand and seal, the Second day of August, in the year of
our Lord One thousand eight hundred and six.
RICHARD (L.S.) TOMKINSON.
2d August, 1806.-Sealed, delivered, and
acknowledged by the within-named
Richard Tomkinson, in the presence