IMPROVEMENTS IN THE MANUFACTURE OF SALT, AND IN APPARATUS USED THEREIN
Year: 1860

page_text: LETTERS PATENT to Charles Greenway, of 4, Albert Place, Cheltenham,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF SALT, AND
IN APPARATUS USED THEREIN."
Sealed the 25th October 1860, and dated the 30th May 1860.
PROVISIONAL SPECIFICATION left by the said Charles Greenway at the
Office of the Commissioners of Patents, with his Petition, on the
30th May 1860.
I, CHARLES GREENWAY, of 4, Albert Place, Cheltenham, do hereby declare
the nature of the Invention for "IMPROVEMENTS IN THE MANUFACTURE OF SALT,
AND IN APPARATUS USED THEREIN," to be as follows:-
This Invention has for its object improvements in the manufacture of salt,
and in apparatus used therein.
For these purposes a series of upright boilers are set in a suitable flue,
which is heated by a fire or fires by preference at one end. The lower end of
each boiler is of a conical form, and is protected from the heat by brickwork."
The upper part of each of the boilers is covered when at work, the cover
being arranged to be readily removed. The lower end of each boiler is
capable of being closed by a valve, which is kept open except when salt is being
withdrawn from a lower vessel which is attached to a descending tube fixed to
the lower end of each boiler. The lower end of each of such vessels is conical,

page_text: and is closed at the bottom by a valve. The brine is boiled in the series of
boilers, and the salt descends into the several vessels connected therewith, from
which it is from time to time withdrawn by opening the valves at the bottoms
thereof. The valve at the bottom of each of the boilers, to which each of such
vessels is connected, is closed during the time of withdrawing the salt. The
steam generated in the series of boilers is conveyed away from the upper
parts of the boilers by suitable steam pipes, and such steam is used for heating
brine in suitable pans or vessels for making other classes of salt. The boilers
and flue in which they are set are so arranged that the heat and products of
combustion may pass alternately in succession partly around each of the
boilers, such boilers being set alternately to the right and left hand walls
forming the sides of the flue.
SPECIFICATION in pursuance of the conditions of the Letters Patent,.filed
by the said Charles Greenway in the Great Seal Patent Office on the
30th November 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
GREENWAY, of 4, Albert Place, Cheltenham, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of May, in the year of our Lord One
thousand eight hundred and sixty, in the twenty-third year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Charles Greenway, Her special licence that I, the said Charles Greenway, my
executors, administrators, and assigns, or such others as I, the said Charles
Greenway, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE MANUFACTURE OF SALT, AND IN APPARATUS USED THEREIN," upon the
condition (amongst others) that I, the said Charles Greenway, my executors
or administrators, by an instrument in writing under my, or their, or one
of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.

page_text: NOW KNOW YE, that I, the said Charles Greenway, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the fol-
lowing statement thereof, that is to say:-
This Invention has for its object improvements in the manufacture of salt,
and in apparatus used therein.
For these purposes a series of upright boilers are set in a suitable flue, which
is heated by a fire or fires by preference at one end. The lower end of each
boiler is of a conical form, and is protected from the heat by brickwork. The
upper part of each of the boilers is covered when at work, the cover being
arranged to be readily removed. The lower end of each boiler is capable of
being closed by a valve which is kept open except when salt is being withdrawn
from a lower vessel which is attached to a descending tube fixed to the lower
end of each boiler. The lower end of each of such vessels is conical, and
closed at the bottom by a valve. The brine is boiled in the series of boilers,
and the salt descends into the several vessels connected therewith, from which
it is from time to time withdrawn by opening the valves at the bottoms
thereof. The valve at the bottom of each of the boilers, to which each of such
vessels is connected, is closed during the time of withdrawing the salt. The
steam generated in the series of boilers is conveyed away from the upper parts
of the boilers by suitable steam pipes, and such steam is used for heating brine
in suitable pans or vessels for making other classes of salt. The boilers and
flue in which they are set are so arranged that the heat and products of com-
bustion may pass alternately in succession partly around each of the boilers,
such boilers being set alternately to the right and left hand walls forming the
sides of the flue.
Having thus stated the nature of my Invention, I will proceed more
fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a plan of five boilers, but more or less may be set in one
stack; and Figure 2, an elevation of apparatus constructed and arranged
according to my Invention.
A, A, are cylindrical boilers with conical ends; B is a vessel applied
below each boiler A. The boilers A and vessels B are connected by means of
pipes C, but the passage out of the boiler is arranged to be stopped by a conical
or other suitable valve D. The lower end of each of the vessels B has
a conical or other suitable valve E applied thereto; F is a trough into
which the salt is received from the vessels B. Each vessel B is provided

page_text: with an air-pipe and cock G to admit air when the salt is being removed
from the vessels B. Brine is supplied to the boilers A by means of pipes H,
and steam is conveyed away from the boilers A. by pipes I. The boilers A, A,
are set in such manner that the heat and products of combustion may pass
alternately to the right hand and to the left from the fire or furnace J, as is
indicated by the arrows in Figure 1. The heat and products of combustion
may be caused to act directly on the lower ends and sides of the boilers, or
there may be external jackets or casings A* around the boilers to receive
water from a suitable cistern or reservoir by pipes K, and the steam obtained
therefrom may be conducted away by steam pipes I, but I make no claim to the
surrounding of boilers in which salt is made with jackets or casings, similar
ones having before been used. The salt as it is produced in the boilers A will
descend into the vessels B, the valves at the lower ends of which are kept
closed, whilst the valves at the lower ends of the boilers are kept open; the
air cocks are also kept closed. When salt is to be withdrawn from a vessel B
the valve of the boiler is to be closed, and the valve at the lower end of that
vessel B is to be opened, and also the air-cock, when the salt will descend into
the trough. The valve at the bottom of the vessel B is then to be again closed,
and that at the bottom of the boiler connected therewith opened; the air-cock
is also to be closed to prevent the brine passing away in that direction.
In this manner is each of the boilers A and its vessel B to be worked.
Having thus described the nature of my Invention, and the manner of
performing the same, I would have it understood that I make no claim to
any of the parts of the apparatus separately, but what I claim is the combined
arrangement herein described.
In witness whereof, I, the said Charles Greenway, have hereunto set
my hand and seal, this Fourteenth day of November, in the year of
our Lord One thousand eight hundred and sixty.
CHARLES GREENWAY.
(L.S.)