Improvements in Separators for Cream and Butter.
Year: 1890

page_text: Date of Application, 22nd July, 1890
Complete Specification Left, 14th Apr., 1891-Accepted, 16th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Separators for Cream and Butter.
I, ADOLPH WAILIN of No. 16 Handtverkargaten, Stockholm, Sweden, Agent,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to separate the buttery particles from the skim
milk centrifugally in order that such buttery particles may accumulate in progres-
sively large grains or lumps so as to be easily separated from the skim milk by a
sieve or otherwise and molded up into a form for use by any ordinary butter
worker.
In carrying out this invention the milk is introduced into a revolving vessel and
the skim milk being heaviest passes outwardly and the cream forms the inner wall
and passes away progressively into the butter separator. This butter separator
can either be formed with the centrifugal cream separator but usually it will be a
separate vessel adapted to be attached to cream separators of the ordinary con-
struction heretofore made use of.
The butter separator is provided with concentric ledges or shelves increasing in
diameter so that there are annular troughs between the concentric ledges, and the
buttery particles pause in the successive annular troughs and are exposed to a
violent centrifugal action to drive the skim milk from the buttery particles and
the buttery particles escape over the edges of the annular ledges and the skim
milk spreads in a thin film upon each of the annular ledges and passes outwardly
with greater rapidity than the buttery particles which adhere slightly to the
surface of the annular ledges, hence such buttery particles accumulate and the
grains or lumps of butter increase in size until such butter particles are either
taken off by a stationary scoop within the last annular trough or are delivered
at the same opening with the skim milk or through a separate tube or opening and
in either form the buttery particles have accumulated sufficiently to be easily
separated and molded up by hand or by an ordinary butter working machine.
Dated this 22nd day of July 1890.
ADOLPH WAHLIN.
By Brewer & Son,
Agents.
COMPLETE SPECIFICATION.
Improvements in Separators for Cream and Butter.
I, ADOLPH WAHLIN, of No. 16 Handtverkargaten, Stockholm, Sweden, Agent,
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 following
statement:—
In carrying out this invention the milk is introduced into a revolving vessel and
the skim milk being the heaviest passes outwardly and the cream forms the inner
wall and passes away progressively into the butter separator.
This butter
separator can be formed with the centrifugal cream separator but usually it will be
a separate vessel adapted to be attached to cream separators of the ordinary
construction heretofore made use of.
The butter separator is provided with concentric ledges or shelves increasing in
diameter so that there are annular troughs between the concentric ledges, and the
buttery particles pause in the successive annular troughs and are exposed to a
violent centrifugal action to drive the skim milk from the buttery particles, and
01

page_text: the buttery particles escape over the edges of the annular ledges and the skim milk
spreads in a thin film upon each of the annular ledges and passes outwardly with
greater rapidity than the buttery particles which adhere slightly to the surface of
the annular ledges, hence such buttery particles accumulate and the grains or
lumps of butter increase in size until such butter particles are either taken off by
a stationary scoop within the last annular trough, or are delivered at the same
opening with the skim milk or through a separate delivery tube or opening and in
either form the buttery particles have accumulated in grains or lumps sufficiently
large to be easily separated and molded up by hand or by an ordinary.butter
working machine."
In the drawing Fig. 1 is a vertical section of a centrifugal separator with the
butter separator connected therewith and extending downwardly around the upper
end of the cream separator. Fig. 2 is a similar view with the butter working
apparatus inverted. Fig. 3 is a vertical section of the cream separator with the
butter working apparatus extending below the same, and Fig. 4 is an inverted
sectional plan at the line a. a. of Fig. 1.
The vertical axis A of the separator is to be supported in any usual manner
and rotated at the proper rapidity by suitable power, and upon this axis is the
bottom of the centrifugal cream separator B and into this the milk is supplied by
any suitable pipe or conduit C.
In Figs. 1 & 2 this milk pipe C passes down to the bottom part of the separator
and in Fig. 3 it opens into an annular trough 2 at the upper and smaller end of the
cream separator and the milk passes therefrom by a hole into the inside of the
separator B and in this separator B the cream and skim milk are separated in
the usual manner and the cream passes off by an opening or pipe 3 and the skim
milk from the opening or pipe 4. The butter separator is made conical, in the
form of a vessel E, and within the same are the annular ledges 6, 7, 8, which may
be more or less in number and the general form of the vessel E being conical, the
annular ledges increase in diameter and they have between them annular troughs
and the cream passes from the opening or delivery 3 into the smallest of the
annular troughs and it accumulates therein until it flows over the edge of
the annular ledge 6 into the next annular trough and when that is full it flows
over the ledge 7 and so on to the point of delivery. In all instances the cream
within the annular troughs is exposed to a violent centrifugal action, tending to
throw the skim milk outwardly, as this is the heaviest, and as the skim milk and
butter pass over the annular ledges in succession, the skim milk forms a thin strata
and is thrown away from the buttery particles and these accumulate and adhere
together successively; and in the last of the annular troughs the butter particles
have accumulated and adhered together in grains or lumps sufficiently large to be
removed by a screen if the butter milk and buttery particles pass off together over
the delivery edge 10 into a receiving vessel, but if a scoop 11 is provided as shown
by dotted lines in Figs. 1 & 2 the buttery particles can be taken off by the same, as
they accumulate within the last annular trough, such scoop remaining stationary
and the buttery particles passing off by their momentum through the same and
with but little skim milk or butter milk adhering to them.
It is to be understood that the butter vessel Ein Figs. 1 & 2 can be applied to
an ordinary centrifugal cream separator, and in Fig. 3 the butter vessel E is a
continuation of the centrifugal cream separator B and the cream may pass into
a cup or trough 12 before passing to the first annular trough adjacent to the
ledge 6.
In Figs. 1 & 2 I have represented in addition to the butter separating vessel
with its annular ledges an additional separating vessel F around the butter
vessel E, such vessel F being annular and provided with an inwardly projecting
flange 13, in order that the buttery particles may be allowed to accumulate within
the annular spaces of this separating vessel F, the butter particles and skim milk
passing through the pipe 14 from the last annular trough of the butter vessel E
into the separating vessel F and the scoop 15 is represented as adapted to receiving

page_text: the butter and the pipe 16 passes away the skim milk from the separating vessel F.
If desired small holes may be made in any or all of the ledges as seen at 20 to
allow portions of the skim milk to pass away without going over the ledges, and
a pipe may be used with the separating vessel F as shown by dotted lines at 21,
for the buttery particles to pass away instead of being taken by the scoop 15.
By these improvements I am enabled to effect the entire separation of the butter
and skim milk by one operation, the material passing through the successive stages
hereinbefore stated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
First. The method herein specified of separating butter from skim milk con-
sisting in exposing the same to a centrifugal action as the materials pass in
succession over annular ledges between one annular trough and another, the skim
milk being spread in a thin film upon such annular ledges as the buttery particles
accumulate and adhere together, substantially as set forth.
Second. The combination with a centrifugal cream separator of a butter
separator connected with the cream separator, and revolving therewith, said butter
separator being conical and over the surface of which the butter is caused to pass,
substantially as set forth.
Third. The centrifugal butter-separator having an approximately conical form
and a series of annular ledges upon its inner surface, the cream being received at
the smaller end of such butter separator, in combination with an annular chamber
revolving with the butter separator, there being an opening for the discharge of
the butter milk and butter from the butter separator into the annular chamber,
and a discharge opening for the butter milk, substantially as set forth.
Fourth. The conical centrifugal butter separator over the surface of which the
cream is caused to pass outwardly and discharge from the larger end, in com-
bination with a surrounding annular chamber connected to and rotating with the
butter separator and receiving the materials therefrom and provided with a
discharge opening for the skim milk, substantially as specified.
Fifth. A centrifugal butter extractor having internal annular ledges, over which
the buttery particles are caused to pass in succession as the skim milk is thrown off
from the same, in combination with an annular chamber connected to and revolving
with the butter separator, and into which the buttery particles and skim milk are
received, and a pipe opening at one end near the inner surface of the wall of the
annular chamber and at the other end outside the apparatus for the passage of
skim milk, and means for removing the buttery particles from the inner surface of
the annular layer within the annular chamber, substantially as set forth.
Dated the
ULIS ITUL
1
1 1001
LUCA VILIS TUULLISET TOUT
ADOLPH WAHLIN.
By Brewer & Son,
Agents.
ADOLPH WAHLIN.
By Brewer & Son,
Agents.