IMPROVEMENTS IN EVAPO- RATING LIQUIDS, AND IN THE MEANS OR APPARATUS TO BE EMPLOYED THEREIN
Year: 1872

page_text: LETTERS PATENT to Albert Ungerer, of Simmering, near Vienna,
Austria, Chemist, for the Invention of "IMPROVEMENTS IN EVAPO-
RATING LIQUIDS, AND IN THE MEANS OR APPARATUS TO BE EMPLOYED
THEREIN."
Sealed the 18th March 1873, and dated the 10th October 1872.
PROVISIONAL SPECIFICATION left by the said Albert Ungerer at the
Office of the Commissioners of Patents, with his Petition, on the
10th October 1872.
I, ALBERT UNGERER, of Simmering, near Vienna, Austria, Chemist,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN EVAPORATING LIQUIDS, AND IN THE MEANS OR APPARATUS TO BE EMPLOYED
THEREIN," to be as follows:-
This Invention, which relates to improvements in evaporating liquids,
consists of a perpendicular shaft or tower constructed of stone or other
suitable material and covered with a perforated platform or cistern,
from which a considerable number of wire or other ropes or rods are
suspended into the interior of the tower. The liquid to be evaporated
is first conducted to the top of the tower and then allowed to run down

page_text: through the perforations in the cover along the ropes or rods at a speed
which can be regulated according to circumstances. Hot air or the
products of combustion proceeding from a furnace enter the tower near
its base and escape through an opening near its top, meeting on their
way the liquid spread over the immense surface afforded by the ropes,
and thus concentrating the same by evaporation, more or less, according
to the heat of the gases and the speed at which the liquid is allowed to
run down the ropes. It. is preferred to place a cistern at the base of
the tower in order to collect the concentrated liquid, and so that it may
be removed therefrom either occasionally or continuously. The heating
of the tower may be effected either by waste gases from a beating
operation conducted for some other purpose or by means of air heated
for the purpose.
My improved process is particularly adapted for concentrating alkaline
lyes which have served or becu used for boiling wood, straw, esparto,
or other materials used in paper-making, or any other waste liquids
containing both alkali and organic substances previous to recovering
the alkali therefrom; in this case the furnace in which the concentrated
lyes are dried and the residue burnt or calcined is the most convenient
source for heating the evaporating tower. The process is however
generally applicable to the evaporation of liquids when such liquids are
not injured by direct contact with fire gases or hot air, and when they
themselves do not act destructively upon the material of the tower or
ropes beyond a reasonable wear and tear.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Albert Ungerer in the Great Seal Patent Office
on the 9th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALBERT
UNGERER, of Simmering, near Vienna, Austria, Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of October, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Albert Ungerer, Her special licence that
I, the said Albert Ungerer, my executors, administrators, and a

page_text: assigns, or such others as I, the said Albert Ungerer, 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 EVAPORATING LIQUIDS AND IN THE MEANS OR APPARATUS TO BE EMPLOYED
THEREIN," upon the condition (amongst others) that I, the said
Albert Ungerer, 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 In-
vention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Scal Patent Office within
six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Albert Ungerer, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement in writing, that is to say :—
This Invention relates to improvements in evaporating liquids and in
the means or apparatus to be employed therein.
The improvements consist in constructing a perpendicular shaft or
tower of stone, iron, brickwork, or of other suitable material, which is
covered with a perforated platform or cistern from which a considerable
number of wire or other ropes or rods are suspended into the interior of
the tower. The liquid to be evaporated is first conducted to the top of
the tower and then allowed to run down through the perforations in
the cover along the ropes or rods at a speed which can be regulated
according to circumstances. Hot air or the products of combustion
proceeding from a furnace are allowed to enter the tower near its base
and to escape through an opening near its top, meeting on their way
the liquid spread over the immense surface afforded by the ropes, and
thus concentrating the same by evaporation, more or less, according to
the heat of the gases and the speed at which the liquid is allowed to
run down the ropes. It is preferred to place or arrange a cistern at the
base of the tower in order to collect the concentrated liquid, and so that
it may be removed therefrom either occasionally or continuously. The

page_text: heating of the tower may be effected either by waste gases from a
heating operation conducted for some other purpose or by means of air
heated for the purpose.
My improved process is particularly adapted for concentrating alkaline
lyes which have served or been used for boiling wood, straw, esparto, &
or other materials used in paper-making, or any other waste liquids
containing both alkali and organic substances previous to recovering
the alkali therefrom; in this case the furnace in which the concentrated
lyes are dried and the residue burnt or calcined is the most convenient
source for heating the evaporating tower. The process is however 1
generally applicable to the evaporation of liquids when such liquids are
not injured by direct contact with fire gases or hot air, and when they
themselves do not act destructively upon the material of the tower or
the ropes beyond a reasonable wear and tear.
It will be obvious that for the wire ropes may be substituted any 1
ropes or rods of other suitable material offering a large surface for the
liquid to run down.
Having now described the nature and object of my said Invention
for "Improvements in Evaporating Liquids and in the Means or
Apparatus to be employed therein," together with the manner in 2
which the same is to be or may be performed or carried into practical
effect, I would remark in conclusion that I claim as my Invention the
improved process for evaporating liquids and the apparatus or means to
be employed therein, substantially as above described, or any obvious
modification or variation thereof, whereby the same result is attained.
In witness whereof, I, the said Albert Ungerer, havo hereunto
set my hand and scal, this Twenty-seventh day of March, in
the year of our Lord One thousand eight hundred and seventy-
three.
ALBERT UNGERER. (L.s.)
Chemiker.