Different Specific Gravities.
Year: 1887

page_text: Date of Application, 18th Oct., 1887
Complete Specification Left, 18th July, 1888
Complete Specification Accepted, 24th Aug., 188
DEEZOWP
Different Specific Gravities.
I WALDEMAR BERGH of Temple Chambers Whitefriars in the City of London
Merchant do hereby declare the nature of this invention to be as follows:-
I form the revolving cylinder with an upper chamber in which the separation takes
place by centrifugal action, and a lower chamber for receiving the heavier fluid (such
as skim milk in the case of milk separation). The upper chamber is formed or
provided with a part cover having a central open part. The neck of the cover may
have an inner flange or lip for the overflow of the lighter part or cream and I may
regulate the outflow by means of one or more small pipes screwed into the neck and
thus rendered adjustable therein. In the partition or diaphragm separating the
two chambers I fit the spindle which may be simply formed conical at this place so as
to hold sufficiently tight without the use of key or the like and so that the cylinder
can be easily detached therefrom. The two chambers are connected by one or more
small pipes which pass down the inner or it may be the outer side and reach up to the
cover of the upper chamber. The entry to this pipe or pipes is by preference lateral
and against the side of the cylinder. I prefer however to provide the cylinder with a
small groove or channel open towards the inside and close up against the cover and to
let the upper end of the aforesaid inner pipe or pipes lead into this channel whereby I
obtain absolutely pure skim milk to be drawn off without any intermixture of cream.
The skim milk passes down through this pipe or pipes. The cylinder is fitted with one
or more usual vertical partitions extending towards the centre and I prefer to place
the skim milk pipes close to these partitions. One or more holes may be provided in
the horizontal diaphragm or partition extending in a curved or slanting direction
towards the centre and serving to run off the contents of the cylinder when the
machine is stopped. The lower chamber has also a cover open in the middle. The
skim milk passes over the inner edge or flange of this cover into the lower part of an
outside enclosing collecting vessel whence it runs off into a suitable receptacle. The
D

page_text: said collecting vessel is on the top fitted or formed with an annular receptacle for the
cream which overflows from the cylinder at the top. I make this receptacle of tin or
other suitable light material and fix it on a disc, or arms on the stand in such manner
that it can be easily lifted off and removed for cleaning. The milk or other fluid to
be separated is fed into a dish or chamber on the diaphragm or partition, one or more
tubes or channels leading down therefrom towards the bottom of the separating
chamber. The spindle is supported in bearings in the usual or any other suitable
manner and may be driven by hand or power. The apparatus described may also be
arranged to work in the horizontal position the spindle being then by preference
prolonged out through the separating chamber of the cylinder.
Dated this 18th day of October 1887.

page_text: Improvements in Centrifugal Apparatus for Separating Fluids of
Different Specific Gravities.
I, WALDEMAR BERGH of Temple Chambers Whitefriars in the City of London
Merchant 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:
This invention refers to the construction of centrifugal apparatus for separating
fluids of different specific gravities and is as hereinafter described.
In the accompanying drawings I have shown two forms of the apparatus, Figures 1
and 2 being respectively vertical section and plan of the one form and Figures 3 and 4
respectively vertical section and plan section of the other form.
Referring to Figures 1 and 2 the revolving cylinder is formed with an upper
chamber A in which the separation takes place by centrifugal action, and a lower
chamber B for receiving the heavier fluid (such as skim milk in the case of milk
separation). The upper chamber A is formed or provided with a part cover A¹ having
a central open part as shewn. The neck of the cover may have an inner flange or
lip A for the overflow of the lighter part or cream, and I may regulate the outflow
by means of one or more small pipes C screwed into the neck and thus rendered
adjustable therein. In the partition or diaphragm D separating the two chambers A
and B I fit the spindle E which may as shewn be simply formed conical at this
place so as to hold sufficiently tight without the use of key or the like, and so that
the cylinder A B can be easily detached therefrom. The two chambers A and B are
connected by one or more small pipes F, in this case two, which pass down the outer
side and reach up to the cover of the upper chamber A. I prefer to provide the
cylinder with a small enlargement groove or channel as at A3 and to let the upper
ends of the pipes F lead into this enlargement or channel whereby I obtain absolutely
The skim milk
pure skim milk to be drawn off without any intermixture of cream.
passes down through the pipes F.
The cylinder is fitted or formed with one or more, in this case two usual partitions G
extending towards the centre. One or more holes I may be provided in the horizontal
diaphragm or partition D extending in a curved or slanting direction towards the
centre and serving to run off the contents of the cylinder when the machine is
stopped.
The
The lower chamber B has also a cover B¹ open in the middle. The skim milk
passes over the inner edge or flange of this cover into the lower part of an outer
enclosing collecting vessel K whence it runs off into a suitable receptacle.
said collecting vessel is on the top fitted or formed with an annular receptacle K¹
for the cream which overflows from the pipe C in the cylinder at the top or over the
lip A. I make this receptacle of tin or other suitable light material and fix it on a
disc L or arms on the stand in such a manner that it can be easily lifted off and
removed for cleaning.

page_text: The milk to be separated is fed into a dish or chamber D¹ on the diaphragm or
partition D.
One or more channels I as stated leading down therefrom towards the
chamber B at the bottom of the separating chamber A. The spindle is supported
in bearings in the usual or any other suitable manner and may be driven by hand
or power.
Figures 3 and 4 show another form of cylinder in which the pipes F are carried
inside the cylinder and by preference alongside each of the partitions G and with
lateral inlet openings against the inner side of the cylinder.
The apparatus described may also be arranged to work in a horizontal position
the spindle E being then by preference prolonged out through the separating
chamber A of the cylinder.
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 :-
First Forming the drum or cylinder in centrifugal machines for separating
fluids of different specific gravities with a separating chamber open at the feed end
for escape or overflow of the lighter fluid, and with a chamber open at the end for
escape of the heavier fluid, the said two chambers being on each side of a partition
or diaphragm and communicating with each other by one or more pipes having the
inlet for the heavier fluid near the inner circumference of the separating chamber
substantially as set forth.
Second The constructions of apparatus shewn on the drawings.
Dated this 18th day of July 1888.
JENSEN & SON,
77, Chancery Lane, London, W.C.,
Patent Agents.