Improved Method of and Means for Supplying Milk to Centrifugal Separating Machines.
Year: 1889

page_text: Date of Application, 16th Mar., 1889
Complete Specification Left, 16th Dec., 1889-Accepted, 25th Jan., 1890
PROVISIONAL SPECIFICATION.
[Communicated from abroad by SVEN JÖNSSON, of Schoenbergsgade, No. 18 D.,
Copenhagen, in the Kingdom of Denmark, Engineer.]
Improved Method of and Means for Supplying Milk to Centrifugal
Separating Machines.
I, WILLIAM LLOYD WISE of No. 46 Lincoln's Inn Fields, in the County of Middlesex,
Consulting Engineer and Patent Agent, do hereby declare the nature of this invention
to be as follows:-
According to the methods hitherto employed for supplying milk to Centrifugal
Separating Machines, it has been the rule to either conduct the milk as near as
possible to the outer wall of the Centrifugal separator, in order to allow of its thereby
attaining a maximum speed of rotation in a minimum period of time, or in the
case of many centrifugal separators where circumstances have not permitted of
pipes and similar contrivances being lead to the outer wall it has been considered
sufficient to cause the milk to be fed in at the innermost cream stratum.
In both these cases, however, the separating process is to a considerable extent
injuriously affected.
In the former case the new milk coming into the machine tends to go towards the
centre until it reaches that stratum of milk whose specific gravity is similar to its
own. In the latter case, on the other hand, since the new milk enters at a stratum of
milk or cream of less specific gravity than its own, it is carried outwards towards the
periphery of the machine until it reaches the stratum of milk whose specific gravity
is similar to its own.
During its passage to this similar stratum the new milk has in both cases to force
its way through the strata of various specific gravities due to the centrifugal motion
of the machine, and these strata are thus disturbed.
To obviate this the new milk must be caused to enter the separator exactly at
that point at which is situated a milk stratum of specific gravity similar to that
of the entering milk. By this means all disturbances of the strata of milk which
have been already formed, is avoided, so that the centrifugal process can go on
undisturbed, and a much greater cream separating efficiency may be thus
attained.
The particular point at which this milk stratum of similar specific gravity is
situated must be ascertained by experiment for each individual centrifugal separator.
On the accompanying drawing is shown in vertical section by way of example
a centrifugal separator provided with means for attaining the object of this
invention.
A is the drum, B a partition or diaphragm fitted within it, C the milk reservoir,
D the inlet pipe which passes through an annular opening E in the collar F which
is fitted near the bottom of the centrifugal drum. This collar F is arranged in such a
manner that the new milk when leaving the space between the collar and the bottom
of the drum, is conducted direct into that milk stratum which has a similar specific
gravity to the entering milk.
Dated this 16th day of March 1889

page_text: COMPLETE SPECIFICATION.
Improved Method of and Means for Supplying Milk to Centrifugal
Separating Machines.
A communication from abroad by SVEN JÖNSSON, of No. 18 D., Schoenbergsgade,
Copenhagen, Denmark, Engineer.
T, WILLIAM LLOYD WISE, of No. 46 Lincoln's Inn Fields, in the County of
Middlesex, Consulting Engineer and Patent 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 :-
According to methods hitherto employed for supplying milk to centrifugal
separating machines it has been customary to either conduct the milk as near as
possible to the outer wall of the machine, in order to allow of its thereby attaining
a maximum speed of rotation in a minimum period of time; or, in the case of
many centrifugal separators where circumstances have not permitted of pipes and
similar contrivances being led to the outer wall, it has been considered sufficient to
cause the milk to be fed in at the innermost cream stratum.
In both cases, however, the separating process is to a considerable extent injuriously
affected.
In the former case the new milk coming into the machine tends to pass towards
the centre until it reaches that stratum of milk whose specific gravity is similar to its
own. In the latter case, on the other hand, since the new milk enters at a stratum of
milk or cream of less specific gravity than its own, it is carried outwards towards the
periphery of the machine until it reaches the stratum of milk whose specific gravity is
similar to its own.
During its passage to the stratum of like specific gravity the new milk has in each
case to force its way through strata of various specific gravities due to the centrifugal
motion of the machine, and these strata are thus disturbed.
To obviate this disadvantage, the new milk is according to this invention caused to
enter the separator exactly at that point at which a milk stratum of specific gravity
similar to that of the entering milk is situated.
By this means all disturbance of the strata of milk which have been already formed,
is avoided, so that the centrifugal process can go on undisturbed, and a much greater
cream separating efficiency can be thus attained.
The particular point at which this milk stratum of similar specific gravity is situated
must be ascertained by experiment for each individual centrifugal separator.
In the drawing filed with my provisional specification is shewn a centrifugal
separator provided with means for attaining the object of this invention.
A is the centrifugal drumm; B a partition or diaphragm fitted within it; C the milk
reservoir; and D the inlet-pipe which passes through an annular opening E in the
collar or ring F which is fitted near the bottom of the centrifugal drum. This collar
or ring F is arranged in such a manner that the new milk when leaving the space
between the upwardly and outwardly extending flange shewn on the collar or ring
and the bottom of the drum, is conducted direct into that milk stratum which has a
similar specific gravity to that of the entering milk.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In centrifugal milk separating machines, supplying new milk to be treated
directly to that stratum of milk, which, during the working of such machine, has a
specific gravity similar to that of the entering milk.
2. In a centrifugal milk separating machine, the use of a collar or ring F provided
near its centre with an annular opening and at its circumference with a flange that
extends outwards sufficiently far to ensure that the passage between the flange and

page_text: the bottom of the machine, opens direct to that region or part of the interior of the
machine in which there is formed during the working thereof a stratum of milk
having a specific gravity similar to that of the entering milk.
Dated this 16th day of Decembar 1880
W. LLOYD WISE,
Per F. J. B.