Improvements in Apparatus for use in the Concentration of Sulphuric Acid.
Year: 1891

page_text: Date of Application, 29th Dec., 1891
Complete Specification Left, 7th Sept., 1892-Accepted, 15th Oct., 1892
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Madame VEUVE HANNETELLE, neé Hortense
Chapuis, of 36, Rue Grenéta, Paris, in the Republic of France, Platinum
Manufacturer.]
Improvements in Apparatus for use in the Concentration of
Sulphuric Acid.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
My invention relates to apparatus for use in the concentration of sulphuric acid.
The improved apparatus constructed according to my said invention comprises
four cylinders closed at each extremity. These cylinders are arranged above a fire-
place in such a manner that in the transverse direction one shall be at a lower level
than the other, and that in the longitudinal direction they shall be inclined in
opposite directions to each other. With this arrangement the sulphuric acid to be
concentrated, coming from the leaden chambers and entering the first or uppermost
of the four cylinders, will traverse the entire length of this cylinder and then pass
to the second cylinder connected with the first by a tube the extremities of which
are secured to the covers or ends of each cylinder. After passing through the
entire length of the second cylinder the sulphuric acid is conducted through a tube
to the third cylinder and lastly through another tube to the fourth or lowest
cylinder, in which the concentration will be completed and whence it leaves in a
concentrated state through a tube in order to be stored up in flasks or other
receptacles.
Two and two of the cylinders are connected at their upper part, the first with the
second and the third with the fourth, by double connections terminating in pipes
for conducting the vapours generated during the operation to a leaden condenser of
any suitable construction.
The
arrange the four cylinders very close together so that the heat from the fire-
place, above which they are placed, shall be utilized to the greatest extent.
whole of the apparatus is supported by cast iron bed plates and the open spaces
between the cylinders are filled with refractory material up to a height corresponding
to the level of the liquid in the cylinders, which height must be sufficient for
obviating the overheating of the metal and the consequent deterioration of the same.
As regards their height the arrangement of the connecting tubes on their respective
cylinders is such that the level of the acid, on the side where the outflow takes
place, shall be at some distance above the axis of the cylinder. These connecting
tubes are inclined so as to obtain the continuous circulation of the acid in the
apparatus.
All the essential parts of my apparatus are made of platinum, and its construction
does not present any difficulty, which is very important, considering the nature and
price of the metal employed."
The upper part of the apparatus is covered with asbestos or other non-conducting
material with the object of retaining and utilizing as far as practicable all the heat
generated in the fire-place.
.נה ..נ..

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for use in the Concentration of
Sulphuric Acid.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
My invention relates to apparatus for use in the concentration of sulphuric acid. ]
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
The improved apparatus constructed according to my said invention comprises
four cylinders A B C D the extremities of which are closed by covers. These
cylinders are arranged above a fire-place or furnace in such a manner that in the
transverse direction as in Figure 3 one shall be at a lower level than the other, and
that in the longitudinal direction as in Figure 1 they shall be inclined in opposite
directions to each other. With this arrangement the sulphuric acid to be concen-
trated, coming from the leaden chambers and entering the first or uppermost A of
the four cylinders through the orifice E, will traverse the entire length of this
cylinder and then pass to the second cylinder B connected with the first cylinder A
by a tube F the extremities of which are secured to the covers or ends a of each
cylinder.
After passing through the entire length of the second cylinder B the sulphuric
acid is conducted through a tube G to the third cylinder C and lastly through
another tube G¹ to the fourth or lowest cylinder D in which the concentration will
be completed and whence it leaves in a concentrated state through a tube G in order
to be stored up in flasks or other receptacles.
The cylinders A B C D are connected in pairs at their upper part the first A
with the second B and the third C with the fourth D by double connections H H¹
terminating in pipes I 1' for conducting the vapours generated during the operation
to a leaden condenser of any suitable construction.
I arrange the four cylinders A B C D very close together so that the heat from
the fire-place, above which they are placed, shall be utilized to the greatest extent.
The whole of the apparatus is supported by cast iron bed plates J, and the open spaces
between the cylinders are filled with refractory material up to a height corresponding
to the level of the liquid in the cylinders, A B C D which height must be sufficient
for obviating the overheating of the metal and the consequent deterioration of the
same. As regards their height the arrangement of the connecting tubes F G G¹on
their respective cylinders is such that the level of the acid, on the side where the
outflow takes place, shall be at some distance above the axis of the cylinder.
These connecting tubes F G G are inclined so as to obtain the continuous
circulation of the acid in the apparatus.
All the essential parts of my apparatus are made of platinum, and its construction
does not present any difficulty, which is very important, considering the nature and
price of the metal employed.
The upper part of the apparatus is covered with asbestos or other non-conducting
material with the object of retaining and utilizing as far as practicable all the heat
generated in the fire-place.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is:
The above described improved apparatus applicable to the concentration of
sulphuric acid for effecting by its arrangement a continuous circulation in a serpentine

page_text: direction of the sulphuric acid to be concentrated, and consisting of four cylinders
arranged above a fire-place, one lower than the other in the transverse direction and
inclined one relatively to the other in the longitudinal direction these cylinders
communicating successively with each other at their extremities for the circulation
of the acid and being also united two and two by double upper pipes conducting
the vapours produced to the leaden condenser.
Dated this 7th day of August 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.