IMPROVEMENTS IN THE MANUFACTURE OF BUTTER AND APPARATUS THEREFOR to be as follows:
Year: 1884

page_text: This Specification was, upon the 6th day of December 1887, amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
PROVISIONAL SPECIFICATION.
1 HENRY HARRIS LAKE of the firm of Haseltine, Lake and Co., Patent Agents,
Southampton Buildings, London in the County of Middlesex, do hereby declare the
nature of said invention for "IMPROVEMENTS IN THE MANUFACTURE OF BUTTER
AND APPARATUS THEREFOR to be as follows:-
"
This invention relates to the extraction of milk and water from butter during
the manufacture of the same, and consists essentially in the application of
centrifugal power for this purpose.
Amongst all the manipulations in the manufacture of butter, that of extracting
the milk is the most important and the most delicate, and has given rise on that
account to a great many experiments and processes, which, although partly
fulfilling the desired object, have many defects both with regard to the cost of the
operation and to the quality of the product obtained. Amidst the above mentioned
processes there are two that I shall describe summarily in order to better
illustrate my process, that is to say; the extraction of milk from butter by means
of water, otherwise termed the washing of butter; and the mechanical extraction
of milk from butter without the aid water. In the first process, as soon as the
butter is formed in the churn, the milk contained therein is drawn off and the said
butter is washed with clear water which is subsequently removed and a further
quantity of clear water again added, and likewise withdrawn, this process being
repeated until the water drawn off is as clear as it was when mixed with the
butter.
This process has the disadvantage of considerably impairing the taste of the
butter which it sometimes entirely deprives of flavour. Moreover, a number of
microscopic drops of water are left in the butter thus treated, and are injurious
when the latter is used for certain purposes and when it is intended to be
preserved.
In order to extract such water, mixing machines are employed; these machines,
however, only remove a portion of the said water, and whenever attempts are
made to remove a further quantity thereof, the quality of the butter is greatly
impaired thereby.

page_text: The improved process is of great assistance in the above process of butter-
washing, as it permits the removal of the smallest quantities of water, which has
not heretofore been effected by means of any apparatus. It will be understood
that this process permits an efficient washing of the butter, by placing the latter
in the apparatus as soon as formed and causing to flow upon its surface a quantity
of water conveyed by means of a pipe penetrating in the centre of the apparatus
and projecting from small perforations in the said pipe; in this manne
penetrates through the minute portions of butter and carries away with it the last
traces of milk without there being any agglomeration of butter at one point, &
defect which often occurs in the course of ordinary butter-washing and sometimes 1
causes a partial obstruction to such washing.
the water
With regard to the second process of milk extracting, it is carried on as above
stated, mechanically, that is to say without making use of any water, but simply
by kneading
In the latter process, the butter is kneaded by means of spatulas or by hand, 1
and subsequently by a mixing machine. In order to thoroughly extract the
butter-milk it is necessary to continue such kneading for a considerable length of
time which not only renders the 'operation very fatiguing and costly but also
impairs the quality of the butter as it is now universally admitted that the less
the butter is kneaded or triturated the less it differs from its original formation,
and the more its qualities of aroma and delicacy are preserved and maintained.
The last process of mechanical butter-milk extraction tends, notwithstanding its
more or less energetic kneading exigencies, to replace everywhere the washing
process because, as above stated, butter treated according to the former process
preserves its aroma better, is of more agreeable use and can be much longer
preserved than butter prepared according to the latter process.
It is obvious therefore that if on the one hand the mechanical process of
butter-milk extraction is the best, it has on the other hand the disadvantage
of necessitating the kneading, of the butter, (often carried on too far) which
modifies its molecular state in a disadvantageous manner.
This invention has for its object to remove the last portions of milk or water
which may be contained in butter, this being effected, without friction, trituration
or kneading but simply by a methodical, slow and progressive displacement of
these liquids under the sole action of centrifugal force.
It is sufficient, subsequent to the extraction of water and milk from butter by
means of this apparatus, to place the butter thus treated in a mixing machine for
a few minutes-not to extract milk or water from the said butter as no portion
thereof is left behind-but to agglomerate the particles of butter and thus obtain
a compact and dry substance having a homogeneous consistence.
The advantages of my process having thus been clearly indicated, I shall now
proceed to the description of the apparatus which I preferably employ in carrying
this process into practice.
The said apparatus is composed essentially of a cylindrical receptacle formed of
perforated sheet iron and fixed to the upper extremity of a vertical pivoted shaft
upon which is keyed near its lower part a small conical pulley. This small pulley
is set in motion by means of a large conical pulley which receives a rotary motion
from a third pulley keyed upon its shaft; the friction between the small pulley
and the large pulley is rendered greater or less by means of a spring acted upon by
bolts.
As soon as the third pulley is set in motion by a motor, the cylindrical
receptacle attains a considerable speed according to the rotary speed imparted to
the said pulley.
In the cylindrical receptacle is placed a bag of fine linen supported by a metallic
circular frame fixed by three lips. Into this bag is introduced the butter as it
comes from the churn.
As soon as the rotary motion becomes rapid the butter hollows out in the
centre, rises up at the edges, and becomes entirely distributed upon the internal

page_text: periphery of the receptacle thus forming a regular ring, when all the liquid
particles will tend, by reason of the centrifugal force, to move towards this
periphery by passing through the mass of butter and filtering through the bag,
after which they run through perforations formed in the side of the said receptacle
and escape into a cast iron casing where they collect and subsequently run out
through a pipe.
From five to six minutes are sufficient for all the liquid, whether milk or water,
located between the grains of butter, to be entirely expelled, and this as above
stated without any kneading or manual labour.
The cylindrical receptacle is quite empty, contains no internal part such as an
inverted cone covering a shaft and a bearing, and is not traversed by any shaft;
this arrangement alone permits the free, easy, and rapid introduction of a bag
containing a certain quantity of butter.
The bag in which the butter is placed is introduced in the receptacle and fixed
by means of its frame in the manner above described and under the action of the
centrifugal force the butter is uniformly distributed upon the periphery of this
receptacle so that the apparatus may thus acquire, without any injurious rocking,
a speed sufficient for butter-milk extracting purposes, that is to say, for the
complete expulsion of the liquid in the butter. I may alter the forms and
arrangement of the various parts constituting the apparatus as also the nature
of the material employed in their construction, and the mode of attachment of
the bag containing the butter, from which the milk has to be extracted, in the
revolving receptacle which occupies the upper part of the apparatus and the
dimensions of which may also vary according to the quality of the substances
which are being treated during a determined period of time, without departing
from the nature of this invention.
Dated this 12th day of February 1884.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I HENRY HARRIS LAKE, of the firm of Haseltine Lake, & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of my invention for "IMPROVEMENTS IN THE MANUFACTURE
OF BUTTER AND
APPARATUS THEREFOR" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This invention relates to the extraction of milk or water from butter in the
manufacture of the same and to apparatus therefor.
The improved process is based essentially upon the application of centrifugal
force for extracting the milk or water.
"
For this purpose I employ an apparatus which I term a centrifugal milk
extractor" one form of which is hereinafter described.
In the manufacture of butter, the extraction of the milk is the most important
and the most delicate operation, and has given rise on that account to a great
many experiments and processes, which, although partly fulfilling the desired
object, have many defects with regard to both the cost of the operation and to the
quality of the product obtained. Amongst the above mentioned processes there
are two which I shall describe briefly in order to better illustrate my process, that
is to say the extraction of the milk from butter by means of water otherwise
termed the washing of butter; and the mechanical extraction of the milk from
butter, that is without the aid of water. In the first process, as soon as the butter
is formed in the churn, the milk contained therein is drawn off and the said butter
is washed with clear water, which is subsequently removed and a further quantity
of clear water added, and likewise withdrawn, this. operation being repeated until
the water drawn off is as clear as when mixed with the butter.
This process has the disadvantage of considerably impairing the taste of the
butter and sometimes of entirely depriving it of its flavor. Moreover, a number of
small particles of water are left in the butter thus treated and are injurious when
the latter is used for certain purposes and when it is intended to be preserved.
In order to extract such water, butter-workers are employed; these machines,
however, only remove a portion of the water, and whenever attempts are made to
extract a further quantity thereof, the quality of the butter is greatly impaired.
The improved apparatus is of great value in the above described process of
washing butter, as it permits the removal of the smallest particles of water, which
has not heretofore been effected by any apparatus.
It will be readily understood that the butter may be thoroughly washed by
placing the latter in the centrifugal apparatus as soon as it is formed and ejecting
upon its surface a quantity of water conveyed by means of a pipe extending to the
centre of the apparatus, which water issues from the said pipe through small
perforations; in this manner the water penetrates through the minute portions of
butter and carries away with it all traces of milk without the least agglomeration
of butter taking place such as frequently in the course of butter washing under
ordinary circumstances and which sometimes causes a partial obstruction to such
washing.
The second process of extracting the milk is carried on, as above stated,
mechanically, that is to say without making use of any water, but simply by
kneading.
In the latter process, the butter is kneaded by means of spatulas or by hand
and subsequently by a butter worker. In order to thoroughly extract the butter-
milk it is necessary to continue such kneading for a considerable length of time,

page_text: which not only renders the operation very fatiguing and costly but also impairs
the quality of the butter, as it is now universally admitted that the less the butter
is kneaded or triturated the less it differs from its original condition and the better
its aroma and delicacy are preserved and maintained. This latter process of
mechanically extracting butter-milk tends, notwithstanding the exigency for more
or less energetic kneading, to replace everywhere the washing process, because, as
above stated, butter treated according to the mechanical process preserves its aroma
better, is more agreeable to use and can be preserved for a greater length of time
than butter prepared according to the washing process.
It is obvious therefore that if, on the one hand, the process for mechanically
extracting the butter milk is the best, it has on the other hand the disadvantage of
necessitating the kneading, of the butter, which modifies its molecular state in an
injurious manner.
This invention has for its object to entirely remove the milk and water which
may be contained in butter, this being effected without friction, trituration or
kneading, but simply by a methodical, slow and progressive displacement of these
liquids under the action of centrifugal force.
It is sufficient, subsequent to the extraction of the water and the milk from the
butter, by means of this apparatus, to place the butter thus treated in a worker
for a few minutes, not to extract milk or water from the said butter, as no portion
thereof is left behind, but to agglomerate the particles of butter and thus obtain a
compact and dry substance having a homogeneous consistence.
The advantages of the improved process having been thus clearly indicated,
I shall now proceed to the description of the apparatus which I preferably employ
in carrying this process into practice and which is shewn by way of example in
the accompanying drawing in which
Figure 1 is a sectional elevation of the said apparatus.
Figure 2. is a section on the line A. B Figure 1.
Figure 3 is a plan partly in section on the line C. D Figure 1.
Figure 4 is a section on the line E F Figure 1.
As shewn, the said apparatus is essentially composed of a cylindrical receptacle G
formed of perforated sheet iron and fixed to the upper extremity of a vertical
shaft H supported in the step bearing I, and upon which is keyed, near its lower
part, a small conical friction pulley J. This pulley J is set in motion by means
of the large conical friction pulley K which receives rotary notion from the
pulley L keyed upon the shaft M. The friction between the pulley K and the
pulley J is maintained by means of the spring N secured to the frame of
the machine and pressing by means of a stud upon the end of the shaft M. The
friction is increased or diminished by altering the position of the said stud
relatively to the spring N, by means of the nuts Ŏ O¹.
As soon as the pulley L is set in motion by a motor, the cylindrical receptacle G
attains a considerable speed according to the rotary speed imparted to the pulley L.
In the receptaele G is placed a bag R of fine linen, metallic wire or other suitable
material supported by a circular metallic ring fixed by a bayonet joint to the
upper part of the receptacle; in this bag the butter is introduced as it is taken
from the churn.
The apparatus operates in the following manner that is to say:-When the
rotary motion becomes rapid the butter hollows out in the centre, and rises at
the edges, gradually distributing itself over the whole internal periphery of the
receptacle, thus forming a ring. All the liquid particles, by reason of the centrifugal
force, now move outwards from the centre, passing through the mass of butter,
and then through the bag and through the perforations formed in the side of the
said receptacle, from which they fall into the cast iron casing Q from whence they
subsequently find egress through the pipe P.
From five to six minutes are sufficient for all the liquid, whether milk or
water, located between the particles of butter to be entirely expelled, and this, as
above stated, without any kneading or manual labor. The cylindrical receptacle G

page_text: contains no internal part such as an inverted cone covering a shaft, and is not
traversed by any shaft; this arrangement permits the free, easy, and rapid
introduction of a bag containing a certain quantity of butter.
The bag in which the butter is placed is simply lowered into the receptacle G
and fixed by means of its ring in the manner before described; and under the
action of centrifugal force this butter is uniformly distributed upon the periphery
of the receptacle, so that the apparatus may acquire, without any injurious
shaking, a speed sufficient for the purpose of extracting butter-milk; that is to
say for the complete expulsion of the liquid in the butter, I may, without departing
from the nature of this invention, alter the form and arrangement of the various
parts constituting the apparatus, also the nature of the material employed, in
their construction, and the mode of attaching the bag for containing the butter
in the cylindrical receptacle.
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. The herein before described process of extracting milk liquid from butter
by centrifugal force.
Second. The use (in the manner, and for the purposes, herein set forth) of a
cylindrical receptacle to which a rapid rotary motion upon a shaft is imparted by
a motor, and which is open at its upper part to receive the butter from which
the milk liquid is to be extracted.
Third. The employment (in the manner and for the purposes herein set forth) of a
movable bag made of vegetable or animal fibres, metallic wire or other suitable
material in which the butter which is to be subjected to the centrifugal action is
placed.
Dated this 94th day of Santambar 1001
HASELTINE, LAKE & Co..
For the Applicant.

page_text: PROVISIONAL SPECIFICATION.
I HENRY HARRIS LAKE of the firm of Haseltine, Lake and Co, Patent Agents,
Southampton Buildings, London in the County of Middlesex, do hereby declare the
nature of said invention for "IMPROVEMENTS IN THE MANUFACTURE OF BUTTER
AND APPARATUS THEREFOR" to be as follows :-
This invention relates to the extraction of milk and water from butter during
the manufacture of the same, and consists essentially in the application of
centrifugal power for this purpose.
Amongst all the manipulations in the manufacture of butter, that of extracting
the milk is the most important and the most delicate, and has given rise on that
account to a great many experiments and processes, which, although partly
fulfilling the desired object, have many defects both with regard to the cost of the
operation and to the quality of the product obtained. Amidst the above mentioned
processes there are two that I shall describe summarily in order to better
illustrate my process, that is to say; the extraction of milk from butter by means
of water, otherwise termed the washing of butter; and the mechanical extraction
of milk from butter without the aid of water. In the first process, as soon as the
butter is formed in the churn, the milk contained therein is drawn off and the said
butter is washed with clear water which is subsequently removed and a further
quantity of clear water again added, and likewise withdrawn, this process being
repeated until the water drawn off is as clear as it was when mixed with the
butter.
This process has the disadvantage of considerably impairing the taste of the
butter which it sometimes entirely deprives of flavour. Moreover, a number of
microscopic drops of water are left in the butter thus treated, and are injurious
when the latter is used for certain purposes and when it is intended to be
preserved,
In order to extract such water, mixing machines are employed; these machines,
however, only remove a portion of the said water, and whenever attempts are
made to remove a further quantity thereof, the quality of the butter is greatly
impaired thereby.

page_text: The improved process is of great assistance in the above process of butter-
washing, as it permits the removal of the smallest quantities of water, which has
not heretofore been effected by means of any apparatus. It will be understood
that this process permits an efficient washing of the butter, by placing the latter
in the apparatus as soon as formed and causing to flow upon its surface a quantity
of water conveyed by means of a pipe penetrating in the centre of the apparatus
and projecting from small perforations in the said pipe; in this manner the water
penetrates through the minute portions of butter and carries away with it the last
traces of milk without there being any agglomeration of butter at one point, a
defect which often occurs in the course of ordinary butter-washing and sometimes
causes a partial obstruction to such washing.
With regard to the second process of milk extracting, it is carried on as above
stated, mechanically, that is to say without making use of any water, but simply
by kneading.
In the latter process, the butter is kneaded by means of spatulas or by hand,
and subsequently by a mixing machine. In order to thoroughly extract the
butter-milk it is necessary to continue such kneading for a considerable length of
time which not only renders the operation very fatiguing and costly but also
impairs the quality of the butter as it is now universally admitted that the less
the butter is kneaded or triturated the less it differs from its original formation,
and the more its qualities of aroma and delicacy are preserved and maintained.
The last process of mechanical butter-milk extraction tends, notwithstanding its
more or less energetic kneading exigencies, to replace everywhere the washing
process because, as above stated, butter treated according to the former process
preserves its aroma better, is of more agreeable use and can be much longer
preserved than butter prepared according to the latter process.
It is obvious therefore that if on the one hand the mechanical process of
'butter-milk extraction is the best, it has on the other hand the disadvantage
of Decessitating the kneading, of the butter, (often carried on too far) which
modifies its molecular state in a disadvantageous manner.
This invention has for its object to remove the last portions of milk or water
which may be contained in butter, this being effected, without friction, trituration
or kneading but simply by a methodical, slow and progressive displacement of
these liquids under the sole action of centrifugal force.
It is sufficient, subsequent to the extraction of water and milk from butter by
means of this apparatus, to place the butter thus treated in a mixing machine for
a few minutes not to extract milk or water from the said butter as no portion
thereof is left behind-but to agglomerate the particles of butter and thus obtain
a compact and dry substance baving a homogeneous consistence.
The advantages of my process having thus been clearly indicated, I shall now
proceed to the description of the apparatus which I preferably employ in carrying
this process into practice.
The said apparatus is composed essentially of a cylindrical receptacle formed of
perforated sheet iron and fixed to the upper extremity of a vertical pivoted shaft
upon which is keyed near its lower part a small conical pulley. This small pulley
is set in motion by means of a large conical pulley which receives a rotary motion
from a third pulley keyed upon its shaft; the friction between the small pulley
and the large pulley is rendered greater or less by means of a spring acted upon by
bolts.
As BOOD
as the third pulley is set in motion by a motor, the cylindrical
receptacle attains a considerable speed according to the rotary speed imparted to
the said pulley.
In the cylindrical receptacle is placed a bag of fine linen supported by a metallic
circular frame fixed by three lips. Into this bag is introduced the butter as it
comes from the churn.
As soon as the rotary motion becomes rapid the butter hollows out in the
centre, rises up at the edges, and becomes entirely distributed upon the internal

page_text: periphery of the receptacle thus forming a regular ring, when all the liquid
particles will tend, by reason of the centrifugal force, to move towards this
periphery by passing through the mass of butter and filtering through the bag,
after which they run through perforations formed in the side of the said receptacle
and escape into a cast iron casing where they collect and subsequently run out
through a pipe.
From five to six minutes are sufficient for all the liquid, whether milk or water,
located between the grains of butter, to be entirely expelled, and this as above
stated without any kneading or manual labour.
The cylindrical receptacle is quite empty, contains no internal part such as an
inverted cone covering a shaft and a bearing, and is not traversed by any shaft ;
this arrangement alone permits the free, easy, and rapid introduction of a bag
containing a certain quantity of butter.
The bag in which the butter is placed is introduced in the receptacle and fixed
by means of its frame in the manner above described and under the action of the
centrifugal force the butter is uniformly distributed upon the periphery of this
receptacle so that the apparatus may thus acquire, without any injurious rocking,
a speed sufficient for butter-milk extracting purposes, that is to say, for the
complete expulsion of the liquid in the butter. I may alter the forms and
arrangement of the various parts constituting the apparatus as also the nature
of the material employed in their construction, and the mode of attachment of
the bag containing the butter, from which the milk has to be extracted, in the
revolving receptacle which occupies the upper part of the apparatus and the
dimensions of which may also vary according to the quality of the substances
which are being treated during a determined period of time, without departing
from the nature of this invention.
DL1 AL: TOLL 18
1001
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of my invention for "IMPROVEMENTS IN THE MANUFACTURE OF BUTTER AND
APPARATUS THEREFOR and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
"
This invention relates to the extraction of milk or water from butter in the
manufacture of the same and to apparatus therefor.
The improved process is based essentially upon the application of centrifugal
force for extracting the milk or water.
"
For this purpose I employ an apparatus which I term a centrifugal milk
extractor". one form of which is hereinafter described.
In the manufacture of butter, the extraction of the milk is the most important
and the most delicate operation, and has given rise on that account to a great
many experiments and processes, which, although partly fulfilling the desired
object, have many defects with regard to both the cost of the operation and to the
quality of the product obtained. Amongst the above mentioned processes there
are two which I shall describe briefly in order to better illustrate my process, that
is to say-the extraction of the milk from butter by means of water otherwise
termed the washing of butter; and the mechanical extraction of the milk from
butter, that is without the aid of water. In the first process, as soon as the butter
is formed in the churn, the milk contained therein is drawn off and the said butter
is washed with clear water, which is subsequently removed and a further quantity
of clear water added, and likewise withdrawn, this operation being repeated until
the water drawn off is as clear as when mixed with the butter.
This process has the disadvantage of considerably impairing the taste of the
butter and sometimes of entirely depriving it of its flavor. Moreover, a number of
small particles of water are left in the butter thus treated and are injurious when
the latter is used for certain purposes and when it is intended to be preserved.
In order to extract such water, butter-workers are employed; these machines,
however, only reinove a portion of the water, and whenever attempts are made to
extract a further quantity thereof, the quality of the butter is greatly impaired.
The improved apparatus is of great value in the above described process of
washing butter, as it permits the removal of the smallest particles of water, which
has not heretofore been effected by any apparatus.
It will be readily understood that the butter may be thoroughly washed by
placing the latter in the centrifugal apparatus as soon as it is formed and ejecting
upon its surface a quantity of water conveyed by means of a pipe extending to the
centre of the apparatus, which water issues from the said pipe through small
perforations; in this manner the water penetrates through the minute portions of
butter and carries away with it all traces of milk without the least agglomeration
of butter taking place such as frequently in the course of butter washing under
ordinary circumstances and which sometimes causes a partial obstruction to such
washing.
The second process of extracting the milk is carried on, as above stated,
mechanically, that is to say without making use of any water, but simply by
kneading.
In the latter process, the butter is kneaded by means of spatulas or by hand
and subsequently by a butter worker. In order to thoroughly extract the butter-
milk it is necessary to continue such kneading for a considerable length of time,

page_text: which not only renders the operation very fatiguing and costly but also impairs
the quality of the butter, as it is now universally admitted that the less the butter
is kneaded or triturated the less it differs from its original condition and the better
its aroma and delicacy are preserved and maintained. This latter process of
mechanically extracting butter-milk tends, notwithstanding the exigency for more
or less energetic kneading, to replace everywhere the washing process, because, as
above stated, butter treated according to the mechanical process preserves its aroma
better, is more agreeable to use and can be preserved for a greater length of time
than butter prepared according to the washing process.
It is obvious therefore that if, on the one hand, the process for mechanically
extracting the butter milk is the best, it has on the other hand the disadvantage of
necessitating the kneading of the butter, which modifies its molecular state in an
injurious manner.
This invention has for its object to entirely remove the milk and water which
may be contained in butter, this being effected without friction, trituration or
kneading, but simply by a methodical, slow and progressive displacement of these
liquids under the action of centrifugal force.
It is sufficient, subsequent to the extraction of the water and the milk from the
butter, by means of this apparatus, to place the butter thus treated in a worker.
for a few minutes, not to extract milk or water from the said butter, as no portion
thereof is left behind, but to agglomerate the particles of butter and thus obtain a
compact and dry substance having a homogeneous consistence.
The advantages of the improved process having been thus closely indicated,
I shall now proceed to the description of the apparatus which I preferably employ
in carrying this process into practice and which is shewn by way of example in
the accompanying drawing in which
Figure 1 is a sectional elevation of the said apparatus.
Figure 2. is a section on the line A. B. Figure 1.
Figure 3 is a plan partly in section on the line C. D'Figure 1.
Figure 4 is a section on the line E F Figure 1.
As shewn, the said apparatus is essentially composed of a cylindrical receptacle G
formed of perforated sheet iron and fixed to the upper extremity of a vertical
shaft H supported in the step bearing I, and upon which is keyed, near its lower
part, a small conical friction pulley J. This pulley J is set in motion by means
of the large conical friction pulley K which receives rotary motion from the
pulley L keyed upon the shaft M. The friction between the pulley K and the
pulley Jis maintained by means of the spring N secured to the frame of
the machine and pressing by means of a stud upon the end of the shaft M. The
friction is increased or diminished by altering the position of the said stud
relatively to the spring N, by means of the nuts 00¹
As soon as the pulley L is set in motion by a motor, the cylindrical receptacle G
attains a considerable speed according to the rotary speed imparted to the pulley L.
In the receptacle G is placed a bag R of fine linen, metallic wire or other suitable
material supported by a circular metallic ring fixed by a bayonet joint to the
upper part of the receptacle; in this bag the butter is introduced as it is taken
from the churn.
The apparatus operates in the following manner that is to say:-When the
rotary motion becomes rapid the butter hollows out in the centre, and rises at
the edges, gradually distributing itself over the whole internal periphery of the
receptacle, thus forming a ring. All the liquid particles, by reason of the centrifugal
force, now move outwards from the centre, passing through the mass of butter,
and then through the bag and through the perforations formed in the side of the
said receptacle, from which they fall into the cast iron casing Q from whence they
subsequently find egress through the pipe P.
From five to six minutes are sufficient for all
water, located between the particles of butter to be
above stated, without any kneading or manual labor.
the liquid, whether milk or.
entirely expelled, and this, as
The cylindrical receptacle G

page_text: contains no internal part such as an inverted cone covering a shaft, and is not
traversed by any shaft; this arrangement permits the free, easy, and rapid
introduction of a bag containing a certain quantity. of butter.
The bag in which the butter is placed is simply lowered into the receptacle G
and fixed by means of its ring in the manner before described; and under the
action of centrifugal force this butter is uniformly distributed upon the periphery
of the receptacle, so that the apparatus may acquire, without any injurious
shaking, a speed sufficient for the purpose of extracting butter-milk; that is to
say for the complete expulsion of the liquid in the butter, I may, without departing
from the nature of this invention, alter the form and arrangement of the various
parts constituting the apparatus, also the nature of the material employed, in
their construction, and the mode of attaching the bag for containing the butter
in the cylindrical receptacle.
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. The hereinbefore described process of extracting milk from butter by
centrifugal force.
Second. A cylindrical receptacle to which a rapid rotary motion upon a shaft“
is imparted by a motor, and which is open at its upper part to receive the butter
from which the milk is to be extracted.
Third. The employment of a movable bag inade of vegetable or animal fibres,
metallic wire or other suitable material in which the butter which is to be
subjected to the centrifugal action is placed.