Year: 1899

page_text: Date of Application, 2nd May, 1899
Complete Specification Left, 30th Jan., 1900-Accepted, 3rd Mar., 1900
1, FRANS USCAR NILSSON, of Inedalsgatan 1B, Stockholm, Sweden, Mechanic,
do hereby declare the nature of this invention to be as follows;-
The present invention relates to an improvement in centrifugal separator
drums more especially for the treatment of milk, and has for its purpose partly
to effect a quick and efficient skimming and partly to collect slimy substances
and other impurities in the milk in such a manner that they can afterwards be
readily removed from the partitions.
The invention consists in the construction and arrangement of parts herein-
after described and claimed.
In the accompanying drawings Figure 1 shows a vertical section of a separator
drum according to this invention, Fig. 2 shows a vertical section of one of the
rings of the same, and Fig. 3 shows a plan view of such a ring.
In the usual centrifugal vessel A there are superposed on one another a
number of rings B forming a kind of perforated wall through which the milk
treated is forced out. The rings, which form the object of the invention, are
composed of one lower annular disc C which is flat and one upper ring D which
is formed as the frustum of a cone, with the difference that its periphery is pro-
vided with corrugations commencing at the disc and increasing toward the edge,
as seen in Fig. 2 and left half of Fig. 3. The periphery of the frustum
may be corrugated in such a manner that a uniformly conical corrugated surface
is produced, the base-line of the cone having the appearance shown in the right
band half of Fig. 3. The upper edge of the ring is finely notched or fluted, in
order that the milk treated may be forced out between these notches and the
flat part of the superposed ring, while slime and the like will accumulate at the
inner walls of the rings and adhere to them. These rings are inserted loosely
on top of one another, either as shown in Fig. 1 or with the conical part down-
ward, and are clamped together between a flexible bowl or dished disc E, located
at the bottom of the centrifugal vessel, and an upper disc F which by means of
the ring G is pressed down on the rings by the upper part of the centrifugal
vessel. Lugs or projections H may be provided for centering the rings. By the
corrugations of the rings the result is gained that the cream which accompanies
the milk through the notched edges, and which would be liable to accumulate
on the outer sides of the rings and after a short time act as a hindrance to the
passage of the milk treated, is conducted back into the centrifugal vessel by the
corrugations of the next ring above.

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:
I, FRANS OSCAR NILSSON, of Inedalsgatan 1B, Stockholm, Sweden, Mechanic,
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the fol-
lowing statement;-
The present invention relates to an improvement in centrifugal separator
drums more especially for the treatment of milk, and has for its purpose partly
to effect a quick and efficient skimming and partly to collect slimy substances
and other impurities in the milk in such a manner that they can afterwards be
readily removed from the partitions.
The invention consists in the construction and arrangement of parts herein-
after described and claimed.
In the drawings filed with my Provisional Specification:-
Figure 1 shews a vertical section of a separator drum according to this
invention.
Figure 2 shews a vertical section of one of the rings of the same, and
Figure 3 shews a plan view of such a ring.
In the usual centrifugal vessel A there are superposed on one another a
number of rings B forming a kind of perforated wall through which the milk
treated is forced out. The rings, which form the object of the invention, are
composed of one lower annular disc C which is flat, and one upper ring D which
is formed as the frustum of a cone, with the difference that its periphery is pro-
vided with corrugations commencing at the disc and increasing toward the edge,
as seen in Figure 2 and left half of Figure 3. The periphery of the frustum
may be corrugated in such a manner that uniformly conical corrugated surface
is produced, the base-line of the cone having the appearance shewn in the right
hand half of Fig. 3. The upper edge of the ring is finely notched or fluted, in
order that the milk treated may be forced out between these notches and the
flat part of the superposed ring, while slime and the like will accumulate at the
inner walls of the rings and adhere to them. These rings are inserted loosely
on top of one another, either as shewn in Fig. 1 or with the conical part down-
ward, and are clamped together between a flexible bowl or dished disc E located
at the bottom of the centrifugal vessel, and an upper disc F which by means of
the ring G is pressed down on the rings by the upper part of the centrifugal
vessel. Lugs or projections H may be provided for centering the rings. By the
corrugations of the rings the result is gained that the cream which accompanies
the milk through the notched edges, and which would be liable to accumulate
on the outer sides of the rings, and after a short time act as a hindrance to the
passage of the milk treated, is conducted back into the centrifugal vessel by the
corrugations of the next ring above.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. The combination with a centrifugal separator-drum, of a series of rings
superposed on one another, said rings consisting of a flat annular disc to the
outer edge of which is fastened one edge of a conical ring provided with trans-
versal corrugations, substantially as and for the purpose set forth.
2. The combination with a centrifugal separator-drum, of a series of rings
superposed on one another, said rings consisting of a flat annular disc to the

page_text: outer edge of which is fastened one edge of a conical ring provided with trans-
versal corrugations, the free edge of said ring being indented, substantially as
and for the purpose set forth.
3. In a system of partitions for centrifugal vessels, as characterized in Fig. 1,
the arrangement that the rings are held in place between a flexible bowl and an
upper ring, substantially as set forth.
4. The combination and arrangement of parts described in the specification
and illustrated by the drawings.
Dated the 30th day of January 1900.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester, and Birmingham.