In- PROVEMENTS IN APPARATUS FOR CONCENTRATING AND DISTILLING SULPHURIC AND OTHER ACIDS, AND ALL SOLUTIONS IN GENERAL
Year: 1864

page_text: LETTERS PATENT to William Clark, of 53, Chancery Lane, in the County
: of Middlesex, Engineer and Patent Agent, for the Invention of "In-
PROVEMENTS IN APPARATUS FOR CONCENTRATING AND DISTILLING SULPHURIC
AND OTHER ACIDS, AND ALL SOLUTIONS IN GENERAL."-A communication
from abroad by Eugène Alphonse Cotelle, Distiller, of 29, Boulevart
St. Martin, Paris.
Sealed the 18th April 1865, and dated the 24th October 1864.
PROVISIONAL SPECIFICATION left by the said William Clark at the
Office of the Commissioners of Patents, with his Petition, on the 24th
October 1864.
I, WILLIAM CLARK, of 58, Chancery Lane, in the County of Middlesex,
Engineer and Patent Agent, do hereby declare the nature of the said Inven→
tion for "IMPROVEMENTS IN APPARATUS POR CONCENTRATING AND DISTILLING
SULPHURIC AND OTHER ACIDS, AND ALL SOLUTIONS IN GENERAL," to be as.
follows:-
This Invention relates to improvements in apparatus for concentrating and
distilling sulphuric and other acids, and for the concentration of solutions
generally, forming the subject of Letters Patent granted to Eugène Alphonse
Cotelle, dated 23rd February 1864, Number 454.
According to the present improvements I dispense with the retort
described in the Specification of the Patent aforesaid as containing the
heated pumicestone serving for the concentration of the acid or other
solutions.
In the improved apparatus of this Invention the pumicestone is simply
placed in the furnace, the sides of which are slightly more inclined than

page_text: usual, the products of combustion thus heat the pumicestone direct, and so
permit of economizing and utilizing the whole of the heat of the furnace. In
certain cases with this arrangement the products of combustion might act
injuriously on certain saline or acid solutions, as sulphuric acid, for example.
To obviate this I heat the furnace with hot air by means of tubes containing
pumicestone or other matters which are raised to a high temperature by the
-aid of a special furnace.
These improvements are represented in the accompanying Drawing, Fig. 1
of which is a vertical section of a furnace heated directly by the products of
combustion; Fig. 2 shows a vertical section of a furnace heated by means of
hot air or gases. The letters serve for both Figures.
a, furnace, containing the pumicestone; b, c, plate, closing the furnace at
bottom; d, cover, closing same at top, furnished with a small aperture 6 for
the introduction of the liquid; f, pipe, connected to cover d communicating
with a refrigerator g, and the latter with a chimney having a good draught;
h, pipe of lower platë c communicating with a lead refrigerator in which the
concentrated liquid. is cooled before being drawn off into receivers; i, furnace
for heating the pumicestone direct contained in furnace a. In Fig. 2, the
bent tubes containing the pumicestone or other matters is heated by furnace k,
and conducts the heated air into furnace a.
These improvements have for advantage, 1st., to produce great economy in
the heating, and, 2ndly, to save the expense consequent on the fracture of the
motexts previously amploved
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Clark in the Great Seal Patent Office on the
21st April 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CLARK, of 53, Chancery Lane, in the County of Middlesex, Engineer and
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of October, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Clark, Her special licence that I, the said William Clark, my
executors, administrators, and assigns, or such others as I, the said William
Clark, 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

page_text: 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 APPARATUS
FOR CONCENTRATING AND DISTILLING SULPHURIC AND OTHER ACIDS, AND ALL
SOLUTIONS IN GENERAL," a communication to me from abroad: by Eugène
Alphonse Cotelle, Distiller, of 29, Boulevart St. Martin, Paris, upon the
condition (amongst others) that I, the said William Clark, my exécutors
or administrators, by an instrument in writing under my, or their, or onė
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.
:
• NOW KNOW YE, that I, the said William Clark, do hereby declare
the nature of the said Invention, and in what manner the same is to be.per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Sheet. of Drawings hereunto annexed;
and to the letters and figures marked thereon (that is to say):-
This..Invention relates to improvements in apparatus for concentrating™
and distilling sulphuric and other acids, and for the concentration of solu-
tions generally, forming the subject of Letters Patent granted to. Eugène
Alphonse Cotelle, dated Twenty-third day of February, One thousand eight
hundred and sixty-four, Number 454.
. :'
According to the present improvements I dispense with the retort therein
described as containing the heated pumicestone serving for the concentration
of the acid or other solutions.
In the improved apparatus of this Invention the pumicestone is simply
placed in the furnace, the sides of which are slightly more inclined than
usual; the products of combustion thus heat the pumicestone direct, and so
permit of economizing and utilizing the whole of the heat of the furnace.
In certain cases, with this arrangement, the products of combustion might
act injuriously on certain saline or acid solutions, to obviate which as much as
possible I place a second furnace at a certain distance. from the first men-
tioned, and separated from it by a channel filled with pumicestone, which
arrangement permits of the flame being purified, while an opening is left in
this channel for the introduction of the air for consuming the organic matters
which may be carried away by the flame when treating saline solutions or
acids that are liable to change. I heat the furnace with hot air by means of
'

page_text: tubes containing pumicestone or other matters' which are raised to a high
temperature by the aid of a special furnace.
These improvements are represented in the accompanying Drawings, Figs. 1
of which shows a vertical section of a furnace heated direct by the products of
combustion; Fig. 2 shows a vertical section of a furnace heated by means
of hot air or gases. The letters serve for both Figures.
a, furnace,. containing the pumicestone; b, c, plate, closing the furnace at
bottom;,d, cover, closing 'same at top, furnished with a small aperture é for, the
introduction of the liquid; f, pipe, connected; to cover d communicating with
a refrigerator g, and the latter with a chimney having a good draught; h, pipe
of lower.plate c communicating with a lead refrigerator in which the, con-
centrated liquid. is cooled before. being drawn off into receivers ;i; furnace for
heating the pumicestone direct contained in furnace a, and separated from it
by a channel l'filled with pumicestone for purifying the flame'; an opening.m
is made in this channel for burning the organic matters that; may .be
carried away by the flame. In Fig. 2 the bent tube j, containing the pumice-
stone or other matters, is heated by furnace k, and conducts the heated air
into furnace a. :..
These improvements have for advantage, 1st, to produce great economy in
the heating, and, 2ndly, to save the expense consequent on: the fracture of
the retorts previously.employed.
Having described the nature of this Invention, and the manner of perform-
ing the same, I declare that what I claim as the Invention' to be protected
by the herein-before in part recited Letters Patent, is, the two arrangements
of furnaces, heréin described, to be used for the concentration or distillation
of sulphuric or other acids, and for the concentration of all solutions
generally:
In witness whereof, I, the said William Clark, have hereunto set my
hand and seal, this Twenty-first day of April, in the year of our Lord
One thousand eight hundred and sixty-five.
Witness,
53, Chancery Lane,.
London.
W. CLARK. (LS.)