IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING CHLORINE FROM CHLORIDE OF LIME
Year: 1873

page_text: LETTERS PATENT to James Haithwaite, of No. 15, Brookfield Place,
Belfast, in the County of Antrim, Ireland, for the Invention of
"IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING CHLORINE FROM
CHLORIDE OF LIME."
Sealed the 27th December 1873, and dated the 4th July 1873.
PROVISIONAL SPECIFICATION left by the said James Haithwaite at
the Office of the Commissioners of Patents, with his Petition, on
the 4th July 1873.
I, JAMES HAITHWAITE, of No. 15, Brookfield Place, Belfast, in the
County of Antrim, Ireland, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING
CHLORINE FROM CHLORIDE OF LIME," to be as follows:-
The object of the Invention is to facilitate the extraction of chlorine.
from chloride of lime. For this purpose the chloride of lime is placed
in an air-tight cistern or chamber partly filled with water, and provided

page_text: with one or more hollow shafts formed with hollow arms, and capable of
revolving. The shafts I generally place upright in such cisterns or
chambers. The arms thereof are curved, inclined, or of other form, and
when their shafts are set in rotary motion the chloride of lime contained
in the cistern is agitated, and by a current of air passing through the
shafts and arms the chlorine is extracted from the chloride of lime, and
mixes with the water, and the liquor when settled is drawn off for
bleaching purposes.
.SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Haithwaite in the Great Seal Patent Office
on the 2nd January 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
HAITHWAITE, of No. 15, Brookfield Place, Belfast, in the County of
Antrim, Ireland, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of July, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James Haithwaite, Her special license
that I, the said James Haithwaite, my executors, administrators, and
assigns, or such others as I, the said James Ḥaithwaite, 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 MEANS
OR APPARATUS FOR EXTRACTING CHLORINE FROM CHLORIDE OF LIME," upon the
condition (amongst others) that I, the said James Haithwaite, 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 James Haithwaite, 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
following statement thereof, that is to say :—
The object of the Invention is to facilitate the extraction of chlorine
from chloride of lime. For this purpose the chloride of lime is placed
in an air-tight cistern or chamber partly filled with water, and provided
with one or more hollow shafts formed with hollow arms, and capable of
revolving. The shafts I generally place upright in such cisterns or
chambers. The arms thereof are curved, inclined, or of other form, and
when their shafts are set in rotary motion, the chloride of lime contained
in the cistern is agitated, and by a current of air passing through the
shafts and arms the chlorine is extracted from the chloride of lime, and
mixes with the water, and the liquor when settled is drawn off for
bleaching nurnoses

page_text: each of which is taken into by the teeth of another bevilled pinion h
applied on a shaft i. This shaft i is supported to revolve in suitable
bearings j, j, and it has applied on it the fast and loose pulleys k to
receive a strap or band from a steam engine or other suitable power.
When water has been supplied to a cistern a, to say about the height
of the line e, or just above the upper parts of the lower arms fƒ³, the
shaft with its arms f² is set in motion, and the chloride of lime to be
acted upon is then supplied to such cistern through an opening a¹. By
the rapid revolution of these shafts with their arms f², the chloride of
lime is agitated in the water in the cisterns a, and by the action of the
air passing through those arms amongst the chloride of lime the water
becomes saturated with the chlorine gas. The shaft with its arms
continues in motion until the water has risen to within about 2 inches
of the top of the cistern, when the motion of the shaft is stopped, the
taps are closed, and the cistern made air-tight.
"
After about an hour the liquor can be drawn off from the pipe p, and
in about another hour from the pipe q, and so on, so that in about four
hours the whole of the liquor may be drawn off from all the pipes by the
pipe and tap t¹.
The water may be supplied to the cisterns in various ways.
8, 8, 8, 8, are trial taps by which to draw off small quantities to ascertain
whether the liquor is properly settled.
What has been described in respect of one cistern takes place in
relation to the other or others, and in place of only one shaft with
arms to each cistern there may be several, and the number of arms
to such shafts may also be varied. m is a safety valve to each cistern.
Passages are also provided by which the cisterns may open one into the
other, as desired.
Having thus described my Invention, and means which I adopt in
carrying the same into effect, I would have it understood that I do not
confine myself to the arrangements as shown and described, as the same
may be varied without departing from the peculiar character of my
Invention, but what I do claim is, the arranging or combining apparatus
in which air is caused to flow into closed cisterns containing chloride of
lime and water, and in which the chloride of lime and water are agitated

page_text: so that the water may be caused to absorb or extract the chlorine gas,
and the liquid obtained may be drawn off for bleaching purposes, sub-
stantially as described..
In witness whereof, I, the said James Haithwaite, have hereunto
set my hand and seal, this Thirty-first day of December, in the.
year of our Lord One thousand eight hundred and seventy-three.
stantially as described..
In witness whereof, I, the said James Haithwaite, have hereunto
set my hand and seal, this Thirty-first day of December, in the.
year of our Lord Òne thousand eight hundred and seventy-three.
JAMES HAITHWAITE. (L.S.)