AN IMPROVED CENTRIFUGAL APPARATUS FOR SEPARATING CREAM FROM MILK
Year: 1884

page_text: TOY IDIONAL
"
DIECIFICATION.
I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the county of Middlesex, Patent Agents, do hereby declare the
nature of my invention for AN IMPROVED CENTRIFUGAL APPARATUS FOR
SEPARATING CREAM FROM MILK a communication to me from abroad by
N. Jacobsen and H. P. Jensen, both of Aarhus, Denmark, Manufacturers, to be as
follows:-
"
This cream separator is composed of a cylinder preferably of steel, turned very
true, and on the bottom of which are two channels, either on the top surface or on
the under surface. These channels communicating with the cylinder by two small
holes serve for the purpose of gradually expelling the skimmed milk, and by this
means it is possible to expel the milk just from the point in the cylinder where
the separation between the milk and the cream is the greatest, according to the
law of gravitation. This constitutes the great difference between this separator
and all those hitherto employed.
At the top of the cylinder are small conical tubes through which the cream
passes out when separated from the milk. These tubes can be readily changed so
as to suit the relative proportions of the cream to the milk. The cylinder is fixed
on a vertical axis which turns in solid bronze bushes or sleeves. The bottom end
of the axis is provided with a hardened steel pivot which rests upon a hardened
steel screw, and turns in an oil reservoir formed in the bottom bush or sleeve.
Two wings preferably made of sheet steel serve to prevent the milk from revolving
in the cylinder.
A pulley or drum is keyed on to the axis and imparts the nescessary speed to
the cylinder. The cylinder is surrounded by a strong envelope preferably of sheet
iron, which serves as a guard, and as a reservoir for the skimmed milk thrown out
through the open ends of the channels, and from whence it is run off through
a tube. The cream thrown out through the conical tubes is collected in a reservoir
preferably of tinned iron, and is run off through a tube. The whole apparatus is
fixed upon a frame which is bolted on a foundation in the ground.

page_text: The lubricating apparatus which are of great importance on account of the great
speed (about 2400 revolutions per minute) are fixed on the frame. The oil poured
into a reservoir passes by a tube to the top of the upper bush or bearing of the
axis carrying the cylinder, and by a groove in this bearing into another smaller
reservoir at the bottom of this bush; from there through a tube into the lower
bush or bearing and enters the small reservoir formed therein as first mentioned,
from whence it may be run off through a tube to be collected.
During the working the milk is fed through a tube at the top of the apparatus
and down a funnel into the bottom of the cylinder, and on account of the centri-
fugal force the milk rises perpendicularly up the side of the cylinder. When the
level of the milk in the apparatus attains a certain height the cream will pass
through the conical tubes at the top and the skimmed milk through the channels
at the bottom of the cylinder.

page_text: "
I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the county of Middlesex, Patent Agents, do hereby declare the
nature of my invention for "AN IMPROVED CENTRIFUGAL APPARATUS FOR
SEPARATING CREAM FROM MILK (a communication to me from abroad by
N. Jacobsen and H. P. Jensen, both of Aarhus, Denmark, Manufacturers, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This cream separator is composed of a cylinder a, preferably of steel, turned
very true, and on the bottom of which are two channels c and c¹, either on the top
surface, as shown by broken lines, or on the under surface, as shown by full lines.
These channels communicating with the cylinder by two small holes 1 and 2
serve for the purpose of gradually expelling the skimmed milk, and by this means
it is possible to expel the milk just from the point in the cylinder where the
separation between the milk and the cream is the greatest, according to the law of
gravitation. This constitutes the great difference between this separator and all
those hitherto employed.
At the top of the cylinder a are small conical tubes d, d (Fig. 1), through which
the cream passes out when separated from the milk. These tubes can be readily
changed so as to suit the relative proportions of the cream to the milk. The
cylinder is fixed on a vertical axis b (Fig 1), which turns in solid bronze bushes or
sleeves and 8. The bottom end of the axis is provided with a hardened steel
pivot which rests upon a hardened steel screw k, and turns in an oil reservoir i,
formed in the bottom bush or sleeve. Two wings t and t, preferably made of
sheet steel serve to prevent the milk from revolving in the cylinder.
A pulley or drum is keyed on to the axis and imparts the necessary speed to
the cylinder. The cylinder a is surrounded by a strong envelope c, preferably of
sheet iron, which serves as a guard, and as a reservoir for the skimmed milk
thrown out through the channels c and c' and the openings x and y, and from
whence it runs off through the tube m. The cream thrown out through the conical
tubes d and is collected in a reservoir o, preferably of tinned iron, and is run
off through the tube n. The whole apparatus is fixed upon a frame p, which is
bolted on a foundation in the ground.
The lubricating apparatus which are of great importance on account of the great
speed (about 2400 revolutions per minute) are fixed on the frame p. The oil
poured into the reservoir q passes by the tube h to the top of the upper bush or
bearing r of the axis carrying the cylinder, and by a groove in this bearing into
another smaller reservoir at the bottom of this bush; from there through the
tube into the lower bush or bearing a and enters the small reservoir formed
therein as first mentioned, from whence it may be run off through the tube z to be
collected.
During the working the milk is fed through the tube f at the top of the
apparatus and down the funnel g into the bottom of the cylinder, and on account

page_text: of the centrifugal force the milk rises perpendicularly up the side of the cylinder.
When the milk in the apparatus attains the position shown by dotted lines, the
cream will pass through the conical tubes d and at the top and the skimmed
milk through the channels c and c¹ at the bottom of the cylinder.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The improved centrifugal apparatus for separating cream from milk, con-
structed substantially in the manner and for the purpose herein described and
shown in the drawings.
2. The construction of centrifugal apparatus for separating cream from milk
with channels c and c¹, and openings 1 and 2, either on the upper or on the under
surface of the bottom of the cylinder a, and through which channels and openings
the skimmed milk is caused to pass, substantially as herein described and shown in
the drawings.
.נ.ג.
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