IMPROVEMENTS IN TREATING ROSIN OIL TO OBTAIN THEREPROM A NEUTRAL OLL SUITABLE FOR LUBRICATING MACHINERY TO OBTAIN THEREPROM A NEUTRAL OIL SUITABLE FOR LUBRICATING MACHINERY AND FOR OTHER USES
Year: 1873

page_text: LETTERS PATENT to Frederick William Colls, of Erith, in the County
of Kent, for the Invention of "IMPROVEMENTS IN TREATING ROSIN OIL
TO OBTAIN THEREPROM A NEUTRAL OLL SUITABLE FOR LUBRICATING MACHINERY
TO OBTAIN THEREPROM A NEUTRAL OIL SUITABLE FOR LUBRICATING MACHINERY
AND FOR OTHER USES."
Scaled the 7th October 1873, and dated the 23rd April 1873.
.
PROVISIONAL SPECIFICATION left by the said Frederick William
Colls at the Office of the Commissioners of Patents, with his
Petition, on the 23rd April 1873..
I, FREDERICK WILLIAM COLLS, of Erith, in the County of Kent, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
TREATING ROSIN OIL TO OBTAIN THEREPROM A NEUTRAL OIL SUITABLE FOR
LUBRICATING MACHINERY AND FOR OTHER USES," to be as follows:-
•
This Invention has for its object improvements in treating rosin oil
to obtain therefrom a neutral oil suitable for lubricating machinery and
for other uses.
.
Into a vessel fitted with a free steaming apparatus I put rosin oil
(crude or refined), and into another vessel I put caustic lime; I mix the
:

page_text: lime with water, and the lime and water is then added to the oil, and
free steam is turned in until the lime unites with the oil. I then turn
off the steam and allow the semi-saponified oil to settle. After a short
time the water rises to the top, and can be removed by pumping or in
any other convenient manner. The semi-saponified oil is removed to a i
still and distilled with superheated steam and bottom heat.
The whole of the process may be carried through in a still, if preferred.
The result is a light colored sweet smelling lubricating oil of a high
specific gravity.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederick William Colls in the Great Seal Patent
Office on the 23rd October 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
WILLIAM COLLS, of Erith, in the County of Kent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of April, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Frederick William Colls, Her special
license that I, the said Frederick William Colls, my executors, adminis-
trators, and assigns, or such others as I, the said Frederick William
Colls, 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 ROSIN OIL TO OBTAIN THEREFROM A NEUTRAL OIL
SUITABLE FOR LUBRICATING MACHINERY AND FOR OTHER USES," upon the condition
(amongst others) that I, the said Frederick William Colls, 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

page_text: Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frederick William Colls, 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:―
This Invention has for its object improvements in treating rosin oil to
obtain therefrom a neutral oil suitable for lubricating machinery and for.
other uses.
I then turn
Into a vessel fitted with a free steaming apparatus I put rosin oil
(crude or refined); and into another vessel I put caustic lime; I mix the
lime with water, and the lime and water is then added to the oil, and
free steam is turned in until the lime unites with the oil.
off the steam and allow the semi-saponified oil to settle.
time the water rises to the top, and can be removed by pumping or in
any other convenient manner. The semi-saponified oil is removed to a
still and distilled with superheated steam and bottom heat.
After a short
The whole of the process may be carried through in a still, if preferred.
The result is a light colored sweet smelling lubricating oil of a high
specific gravity.
In order that my said Invention may be most fully understood and'
readily carried into effect, I will proceed to describe more in detail the
manner in which I prefer to conduct the process.
1st. Irds fill my still with crude or refined rosin oil. (The stills
may be made of either copper, cast or wrought iron, set with a furnace
for bottom heat, and internally furnished with a pipe for free, plain, and
superheated steam). The still which I employ is made of cast iron,
and is of the form shewn by the annexed Drawing. I use an iron
condenser.
2nd. I put into a vessel of convenient size and shape 14lbs. of fresh
burnt lime (I prefer tunnel burnt lime) for every 1 cwt. of rosin oil in
the stills, and pour upon the lime a sufficient quantity of water to make
it into a creamy consistency; I then turn in free steam which greatly
assists the dissolving of the lime.
3rd. Into the still already charged with the rosin oil to be treated I
nut the pronar quantity of the
of Time
and

page_text: .
described; I turn on the free steam, lower the still cover, and keep the
steam on for about two hours, or until the saponification is sufficiently
advanced, which may be known by the lime thoroughly uniting with
the oil and forming a plastic mass of somewhat the consistency of
honey. I then turn off the steam and allow the mixture to settle some 5
4 or 5 hours, after which time, if the operation be properly done, a
quantity of supernatant water will be found on the top of the saponified
mass. This water should be removed, after which the cover of the still
should be luted down, and fire heat applied to the bottom of still, and
free superheated steam internally in the usual way. I separate the first 10
portion of the distillate from the rest. The residuo left in the still is a
kind of hard lime soap, which may be used as fuel or for making gas,
and many other purposes of that nature.
"
I do not bind myself to the details of the process or to this form of
apparatus, and only make the above statement with a view to explain 15
my process in the simplest manner I know.
What I claim is, the treatment of rosin oil with lime, and then
distilling it with superheated steam and fire heat, substantially as
described.
In witness whereof, I, the said Frederick William Colls, have here- 20
unto set my hand and seal, this
day of October,
in the year of our Lord One thousand eight hundred and seventy-
three.