Year: 1888

page_text: Date of Application, 20th June, 1888
Complete Specification Left, 12th Mar., 1889
Complete Specification Accepted, 13th Apr., 1889
I, WILLIAM LLOYD WISE, of No. 46, Lincolns Inn Fields in the County of
Middlesex, Consulting Engineer and Patent Agent do hereby declare the nature of
this invention to be as follows:-
This invention relates to an improved construction of centrifugal machines in which
the discharge of the milk may be regulated during the working of the machine so
that such discharge will be proportionate to the speed of rotation of the drum of
the machine.
This machine is illustrated on the annexed sheet of drawings.
Fig. 1 is a vertical section.
Fig. 2 shows the upper part in vertical section to a larger scale.
Fig. 3 shows the lower portion in vertical section.
Fig. 4 shows the same in horizontal section.
The drum A is caused to rotate by means of the shaft B from the shaft C, which
is provided at the top with a pin c that engages in a notch or groove in the lower end
of shaft B.
:
The drum A is provided near its bottom with an opening a for the discharge of
the milk and with an inwardly extending tube 6 for the cream.
Within and co-axial with the drum A is a pillar or column D which carries at its
top a cup E that projects through the cover of the drum, and at bottom has a part
or journal or foot that is inserted in a bearing or footstep formed in the bottom of
the drum.
Around the said lower part of D is arranged a spiral spring F which acts against
a shoulder and has a tendency to force the column upwards.
Against the bottom of the cup E there presses a rod G which is screwed into an
arm H that projects from the framing of the machine.
D
077

page_text: On the column D are fixed one or more vanes I which move up and down with
the same, their outer edges being caused to move in guides fixed to the wall of
the drum.
One of these vanes which is located opposite the milk outlet, is provided with a
downwardly projecting tongue I¹ that may be caused by the movement of the
column D to close more or less the said outlet.
Above the drum A is arranged a milk vessel K that has in its bottom a conical
outlet which opens out above the cup E.
This latter has in its side wall one or more outlets e through which the milk can
flow into the drum of the centrifugal machine.
The rod G passes through the milk vessel and is enclosed in a tube L that can be
fixed at the right height by means of the set screw M¹ and which also serves to
regulate the opening for the flow of the milk through the conical outlet.
The milk to be centrifugally treated is poured into the vessel K flows thence down
into the cup E and through the opening e into the drum where the cream and the
milk become separated, the cream flowing through the pipe 6 into the receiver M
(which is provided with an outlet pipe), and the milk passing out through the opening a
into the receiver N (also provided with an outlet pipe).
The correct amount of outflow is regulated by causing the tongue to cover the
opening a more or less, which can be effected during the operation of the machine by
means of the rod G provided with a screw.
The arrangement of the outlet for the milk in the wall of the drum has the
advantage that the discharge of milk is proportionate to the speed of rotation, because
the pressure, under which the discharge takes place, increases and decreases with the
said speed and no risk is run of having to subject the milk again to treatment in the
centrifugal apparatus, if by inattention, the speed of rotation has been allowed to
decrease, hence the skim milk will always flow out uniformly clear.
The arrangement of the outlet in the outer wall of the drum enables the drum to
be cleaned without having to open it viz. by allowing warm water to flow into the
machine during rotation of the same the outlet being left open; and the whole of the
collected dirt will be ejected at this opening together with the water.
Dated this 20th day of June 1888.

page_text: COMPLETE SPECIFICATION.
Improvements in Centrifugal Machines for Separating Cream
from Milk.
I, WILLIAM LLOYD WISE of No. 46, Lincolns 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 :-
This invention relates to an improved construction of centrifugal apparatus in
which the discharge of the milk may be regulated during the working of the machine
so that such discharge will be proportionate to the speed of rotation of the drum of
the separator.
Referring to the drawings filed with my provisional specification.
Fig. 1. illustrates a centrifugal machine according to my invention, in vertical
section.
Fig. 2. shews the upper part in vertical section to a larger scale.
Fig. 3. shews the lower portion in vertical section; and Fig. 4. shews the same in
horizontal section.
The drum A is caused to rotate by means of the shaft B from the shaft C. The
shaft C. is provided at top with a pin c that engages in a notch or groove in the lower
end of the shaft B.
The drum A is provided near its bottom with an opening a for the discharge of
the milk, and an inwardly extending tube b for the cream. Within and co-axial
with the drum A is a pillar or column D, which carries at the top a cup E that
projects through the cover of the drum.
The pillar D is also provided at its lower end with a part or journal or foot which
is carried in a bearing or foot-step formed in the bottom of the drum.
Around the said lower part of D is arranged a spiral spring F which acts against a
shoulder and has a tendency to force the column upwards.
Against the bottom of the cup E there presses a rod G which is screwed into an
arm H that projects from the framing of the machine. On the column D are fixed
one or more vanes I which move up and down with the same, their outer edges being
caused to move in guides fixed to the wall of the drum. One of theses vanes which
is situated opposite the milk outlet, is provided with a downwardly projecting
tongue I that may be caused by the movement of the column D, to more or less close
the said outlet.
Above the drum A is arranged a milk vessel K, that has in its bottom a conical
outlet which opens out above the cup E.
The latter has in its side wall one or more outlet openings e through which the
milk can flow into the drum of the centrifugal machine.
The rod G passes through the milk vessel and is enclosed in a tube L that can be
fixed at the proper height by means of the set screw M' and which also serves to
regulate the opening for the flow of the milk through the conical outlet.

page_text: The milk which is to be centrifugally treated is poured into the vessel K, flows
thence down into the cup E and through the opening e into the drum where the
cream and the milk are separated, the cream flowing through the pipe b into the
receiver M (which is provided with an outlet pipe), and the milk passing out
through the opening a into the receiver N (which is also provided with an outlet
pipe).
The correct amount of outflow is regulated by causing the tongue I¹ to more or less
cover the opening a; which can be effected even during the operation of the machine
by means of the screwed rod G.
The arrangement of the outlet for the milk in the wall of the drum has the
advantage that the discharge of the milk is rendered proportional to the speed of
rotation, because the pressure under which this discharge takes place increases and
decreases with the said speed, and no risk is run of having to subject the milk again
to treatment in the centrifugal machine if by inattention the speed of rotation bas
been allowed to diminish, hence the skimmed milk will always flow out uniformly
clear.
The arrangement of the outlet in the outer wall of the drum, enables the drum
to be cleaned without having to open it, by allowing warm water to flow into the
machine during rotation of the same the outlet being left open, whereupon the
whole of the collected dirt will be ejected at this opening together with the water.
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 a centrifugal machine for separating cream from milk an opening in the
periphery of the centrifugal drum for the delivery of the skimmed milk substantially
as described.
2. In a centrifugal machine for separating cream from milk a vane provided with
a tongue which can be caused to more or less cover the opening for the delivery of
the skimmed milk and whereby the discharge of the milk is regulated.
3. In a centrifugal machine for separating cream from milk the combination with
a vane provided with a tongue of a screwed rod G a column D and a spring F the
arrangement being such that movement of the screwed rod causes the tongue I to be
moved further from or nearer to the discharge opening for the milk, thereby regulating
the sectional area of said discharge opening.
4. A centrifugal machine for separating milk from cream constructed and operating
substantially as described and illustrated.
Dated this 12th day of March 1880