IMPROVEMENTS IN CENTRIFUGAL EXTRACTING OR SEPARATING MACHINES
Year: 1880

page_text: LETTERS PATENT to Frederik Wolff, of Copenhagen, Denmark, Patent Agent,
for an Invention of "IMPROVEMENTS IN CENTRIFUGAL EXTRACTING OR
SEPARATING MACHINES." A communication from Gustav Adolph Hagemann,
of Copenhagen, Denmark, Manufacturer.
PROVISIONAL SPECIFICATION left by the said Frederik Wolff at the Office
of the Commissioners of Patents on the 17th August 1880.
IMPROVEMENTS
A communication
FREDERIK WOLFF, of Copenhagen, Denmark, Patent Agent.
IN CENTRIFUGAL EXTRACTING OR SEPARATING MACHINES."
from Gustav Adolph Hagemann, of Copenhagen, Denmark, Manufacturer.
The machine constructed according to this Invention consists of a cylindrical or
conical centrifugal drum mounted on a horizontal shaft and open at both ends.
The fluid which is to be separated into its light and heavy constituent parts is let
into the drum by a supply pipe at one end, and the separated products have their
exit at the other end of same, the separation taking place while the fluid passes
from oue end to the other.
The centrifugal drum is united to its nave by spokes or discs, and it is fitted
with longitudinal inner paddles or ribs for carrying the fluid along with it. There
is a driving strap pulley at one or both ends. The entry end cover of the drum is
open in the middle so far as to admit of the supply pipe to enter it. The lighter
parts of the fluid take up an annular space nearest the centre, and the heavier ones
next to the inner circumference of the drum. The lighter parts flow over a flange
or rim on the inner edge of the centrally open exit end cover and then pass
into an annular passage formed on the outer casing, and thence by a pipe into a
receiver.
The heavier parts, which are furthest from the centre, enter by a mouth laterally
into a pipe radially fixed to the inner circumference of the drum at or near the exit
end, and thence pass into a smaller pipe fixed concentrically in the aforesaid pipe,
and having its exit through the outer wall of the drum into a tangential outer
gutter formed, say, in the framing of the machine, and having an outlet into a
receiver.

page_text: SPECIFICATION in pursuance of, the conditions of the Letters Patent filed by
the said Frederik Wolff in the Great Seal Patent Office on the 17th
February 1881.
FREDERIK WOLFF, of Copenhagen, Denmark, Patent Agent. "IMPROVEMENTS
IN CENTRIFUGAL EXTRACTING OR SEPARATING MACHINES." A communication
from Gustav Adolph Hagemann, of Copenhagen, Denmark, Manufacturer.
The machine constructed according to this Invention consists of a cylindrical or
conical centrifugal drum mounted on a horizontal shaft and open at both ends.
The fluid which is to be separated into its light and heavy constituent parts is let
into the drum by a supply pipe at one end, and the separated products have their
exit at the other end of same, the separation taking place while the fluid passes
from one end to the other.
The accompanying Drawing illustrates the mode in which this Invention is or
may be carried into effect; Figure 1 is a longitudinal section through the apparatus;
Figure 2 a cross section of same on line o, o, and Figure 3 a separate sectional view
of the appliance for carrying off the heavy fluid, drawn to a larger scale than
Figures 1 and 2.
The centrifugal drum d on the spindle d is united to its nave by spokes or
discs c, and it is fitted with longitudinal inner paddles or ribs e for carrying the
fluid along with it. There is a driving strap pulley at one or both ends. The
entry end cover of the drum is open in the middle, as shown at f, so far as to
admit of the supply pipe q to enter it. The liquid thus admitted is exposed to the
centrifugal action while passing to the other end g of the drum, and the lighter
parts of the fluid take up an annular space nearest the centre and the heavier ones
next to the inner circumference of the drum. The lighter parts will, after a certain
quantity of fluid has been admitted, flow over a flange or rim h on the inner edge
of the centrally open exit end cover, and then pass into an annular passage i
formed on the outer casing r, and thence by a pipe into a receiver.
The heavier parts, which are farthest from the centre, enter by a mouth x
laterally into a pipe y radially fixed to the inner circumference of the drum & at
or near the exit end g, Figure 3, and thence, because of the centrifugal excess
pressure, pass into a smaller pipe z, fixed concentrically in the aforesaid pipe y, and
having its exit through the outer wall d of the drum into the casing r, and into a
tangential outer gutter formed, say, in the framing n of the machine, and having
an outlet into a receiver.
And having thus described and ascertained the nature of this Invention, and a
a mode of carrying the same into effect, as communicated to me, I declare that I
claim,―
First. A horizontal centrifugal extractor for separating fluids in which the drum
is open at each end, the fluid to be treated centrifugally entering at one end while
the separated parts flow out at the other end, all constructed substantially as set
forth.
Second. The concentric double pipe y, z, partaking in the rotary motion of the
drum, the inner pipe corresponding with a hole through the wall of the drum, while
the outer pipe at its lower end close to the drum casing has an opening a for the
entry of the heavy parts of the fluid.
In witness whereof, I, the said Frederik Wolff, have hereunto set my hand
and seal, this Twelfth day of February, in the year of our Lord One thousand
eight hundred and eighty one.