Apparatus for Sterilizing Milk and other Liquids.
Year: 1895

page_text: Date of Application, 5th June, 1895
Complete Specification Left, 2nd Nov., 1.95-Accepted, 14th Dec., 1895
Kingdom.or.Denmark, acume
Apparatus for Sterilizing Milk and other Liquids.
I, HENRY HARRIS LAKE, of the Firm of 'Haseltine, Lake & Co. Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows:-
This invention relates to an apparatus for the continuous heating and sterilizing
of milk and other liquids.
A horizontally arranged cylinder, preferably of copper is surrounded by another
cylinder or by a steam jacket. Through the centre of the cylinder passes in
longitudinal direction an axis, or shaft which rests in bearings arranged outside.the
cylinder and upon which belt. driving pulleys are provided. The said shaft.-is
furnished with wings or helical blades inside the cylinder.
The milk or other liquid to be sterilized is passed through a feed-pipe into the
cylinder at one end thereof and the axis or shaft is rotated and consequently.the
helical blades will stir and agitate the liquid so as to prevent the same from being
burnt, and will also force the liquid forward toward the other end of the cylinder.
Owing to the centrifugal action the liquid is also driven outward against the
periphery of the cylinder, so that the sterilized liquid is lifted and enabled to pass
out through a discharge pipe lying opposite the feed entrance. This pipe is
provided with a thermometer.
The steam serving to heat the cylinder is passed through a pipe arranged near
the discharge pipe for the liquid into the steam jacket and leaves through a pipe
arranged near the other end of the cylinder, so that the heating effect is the greatest
at the point where the milk or other liquid is discharged.
As above mentioned, the liquid under the treatment is by the centrifugal action
driven outward against the periphery of the cylinder and thus around the axis or
shaft of the cylinder an empty or, to specify it more clearly, an air filled, space is
formed. If now the liquid is heated, the air in this space becomes expanded and
mixes with the aqueous vapours whereby the tension is increased and the liquid
would be still further driven away from the centre of the cylinder. This latter
effect is however prevented when this air filled inner space is placed in communication
with the outer air; for this purpose an air pipe is arranged which passes from the
outside to the centre of the cylinder, so that the pressure inside the cylinder can
not surpass that of the atmosphere, and the liquid consequently is driveu against the
periphery of the cylinder only by the action of centrifugal force. The said
communication of the inner vessel or cylinder with the outer air may of course also
be effected in a different manner than by an air pipe; thus for instances the
axis or shaft may be made hollow and be provided with perforations for the inlet
of air.

page_text: STATS and other Liquids.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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 relates to an apparatus for the continuous heating and sterilizing
of milk and other liquids.
This invention is illustrated in the accompanying drawing, which shows
diagrammatically a vertical longitudinal section through the middle of the
apparatus.
A horizontally arranged cylinder A, preferably of copper is surrounded by
another cylinder or by a steam jacket K. Through the centre of the cylinder A
passes in longitudinal direction an axis or shaft B which rests in bearings arranged
outside the cylinder and upon which belt driving pulleys are provided. The said
shaft B is furnished with wings or helical blades C inside the cylinder A.
The milk or other liquid to be sterilized is passed through a feed-pipe D into the
cylinder A at one end thereof and the axis or shaft B rotated the helical blades C
stirring and agitating the liquid so as to prevent the same from being burnt, and
also forcing the liquid toward the other end of the cylinder. Owing to the
centrifugal action the liquid is also driven outward against the periphery of the
cylinder, so that the sterilized liquid is lifted and enabled to pass out through a
discharge pipe E lying opposite the feed entrance. This pipe is provided with a
thermometer a.
The steam for heating the cylinder enters the jacket K through a pipe F
arranged near the discharge pipe for the liquid and leaves through a pipe G
arranged near the other end of the cylinder, so that the heating effect is greatest at
the point where the milk or other liquid is discharged.
As above mentioned the liquid under treatment is by the centrifugal action driven
outward against the periphery of the cylinder and thus around the axis or shaft of
the cylinder an empty or, to specify it more clearly, an air filled space is formed.
If now the liquid is heated, the air in this space becomes expanded and mixes with
the aqueous vapours whereby the tension is increased and the liquid would be still
further driven away from the centre of the cylinder. This latter effect is however
prevented when this air filled inner space is placed in communication with the
outer air; for this purpose an air pipe H is arranged which passes from the outside
to the interior of the cylinder, so that the pressure inside the cylinder can not
surpass that of the atmosphere, and the liquid consequently is driven against the
periphery of the cylinder only by the action of centrifugal force. The said
communication of the inner vessel or cylinder with the outer air may of course also
be effected in a different manner than by an air pipe H; for instance the axis
or shaft B may be made hollow and provided with perforations for the inlet
of air.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, 1 declare that what I claim is :-
A sterilizing apparatus for milk and other liquids the essential features of which
are; a horizontal cylinder provided with feed and discharge pipes for the liquid, and
surrounded by a steam jacket having inlet and outlet pipes for the steam, an axis or
shaft passing centrally in longitudinal direction through the cylinder and provide t
with helically shaped wings; the said axis or shaft being rotatable; and finally an

page_text: open communication between the interior of the cylinder and the outer air, the
whole substantially as, and for the purpose, set forth.
Dated this 2nd day of November 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.