IMPROVE- MENTS IN TREATING SOAP-SUDS
Year: 1853

page_text: LETTERS PATENT to Samuel Cunliffe Lister, of Bradford, in the
County of York, Manufacturer, for the Invention of "IMPROVE-
MENTS IN TREATING SOAP-SUDS."
Sealed the 24th June 1858, and dated the 23d February 1853.
PROVISIONAL SPECIFICATION left by the said Samuel Cunliffe
Lister at the Office of the Commissioners of Patents, with his
Petition, on the 23d February 1858.
I, SAMUEL CUNLIFFE LISTER, of Bradford, in the County of York,
Manufacturer, do hereby declare the nature of the said Invention, for
"IMPROVEMENTS IN TREATING SOAP-SUDS," to be as follows:-
It is well known that in various branches of manufactures large
quantities of soap-suds or wash-waters containing soap are used, and
various means of evaporating or concentrating them have before been
resorted to.

page_text: Now the object of my Invention is to employ extensive revolving
surfaces or discs side by side, which, being partly immersed in the soap-
suds, carry up on their surfaces as they revolve thin films of the fluid,
which I cause to be acted on by streams of air, either in a direction
out from the axis of the apparatus or otherwise, and thus to cause the
soap-suds to be quickly evaporated or concentrated.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Samuel Cunliffe Lister, in the Great Seal Patent
Office, on the 23d August 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
SAMUEL CUNLIFFE LISTER, of Bradford, in the County of York, Manu-
facturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of February, in the
year of our Lord One thousand eight hundred and fifty-three, in the
sixteenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Samuel Cunliffe Lister, Her special
licence that I, the said Samuel Cunliffe Lister, my executors, adminis-
trators, and assigns, or such others as I, the said Samuel Cunliffe Lister,
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 TREATING SOAP-SUDS," upon the condition (amongst
others) that I, the said Samuel Cunliffe Lister, by an Instrument in
writing under my hand and seal, 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 Samuel Cunliffe Lister, 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):
It is well known that in various branches of manufactures large
quantities of soap-suds or wash-waters containing soap are used, and
various means of evaporating or concentrating them have before been
resorted to. Now the object of my Invention is to employ extensive
revolving surfaces or discs, side by side, which, being partly immersed
in the soap-suds, carry up on their surfaces as they revolve thin films of
the fluid, which I cause to be acted on by streams of air either in a
direction out from the axis of the apparatus, or otherwise, and thus to
cause the soap-suds to be quickly evaporated or concentrated.
In order that my Invention may be more fully understood, I will
now proceed to describe the drawing annexed.
A, is a vessel containing-the-soap-suds; B, is a hollow shaft receiving
motion from the pulley D, driven by a steam-engine or other power.
The hollow shaft B, which is at least six inches in diameter, is filled
with small holes, so as to allow of the air passing readily through it.
Upon this shaft are fixed circular discs E, E, of about one yard in
diameter, but they may be varied; they are placed near together, so
that air in passing out of the small apertures in the shaft B, may act
with the greatest advantage upon the thin film of liquid taken up by
their surfaces. The hollow shaft should be placed rather above the
level of the liquid in the vessel, otherwise the suds would enter through
the apertures, and prevent the air from passing through the shaft.
I would remark that the air may be made to act upon the surfaces
of the discs, without passing through the shaft. When the suds are
sufficiently concentrated the fatty matter should be removed, and more
wash-waters placed in the vessel to be operated upon.
I would remark that I am aware that revolving discs and also
equivalent surfaces moving into and out of a fluid to be concentrated
have been before used for evaporating other fluids. I do not therefore
claim such apparatus, my Invention being confined to concentrating

page_text: soap-suds by means of surfaces moving into and out of such suds, and
acted on by streams of air.
In witness whereof, I, the said Samuel Cunliffe Lister, have
hereunto set my hand and seal, this Tenth day of August, in the
year of our Lord One thousand eight hundred and fifty-three.
S. C. LISTER. (L.S.)
Witness, WILLIAM WELLS, Solicitor, Bradford.