An Improved Centrifugal Cream Separating Machine.
Year: 1896

page_text: Date of Application, 4th Jan., 1896
Complete Specification Left, 3rd Oct., 1896-Accepted, 7th Nov., 1896
PROVISIONAL SPECIFICATION.
An Improved Centrifugal Cream Separating Machine.
We, FREDERICK GEORGE JONES, Engineer, and HENRY BRECKNELL,
Engineer, both of 64 Lawrence Hill in the City and County of Bristol do hereby
declare the nature of this invention to be as follows:-
Our invention relates to centrifugal cream separating machines and more
particularly to that part commou to this type of machine usually called the
bowl.
The bowl in our improved machine is preferably of frusto-conical form, in
outline with straight or concave sides, and the bowl is formed in one piece of metal
or is made up of a base and hollow frustum combined and rigidly joined
together.
A hollow cylinder is passed into the said bowl and its outer diameter is equal to
the circular orifice forming the mouth of the bowl and it easily fits into the said
orifice so that it may be withdrawn.
The hollow cylinder is provided with a rim suitably and the said rim rests upon
the top of the bowl when the two are combined. The hollow cylinder rests upon
the bottom of the bowl, or is suspended by the said rim, as desired.
Projections, or pins, upon the said rim hold the cylinder in position to prevent
rotation relatively to the bowl.
Passages are provided round the inner circumference at the mouth of the bowl
for the delivery of cream.
Passages are provided in the base of the bowl for the delivery of separated
milk.
A deflecting dish is fitted to or formed upon the base of the bowl internally at
the centre.
The bowl is fitted to a vertical spindle and rotates with it, and the spindle is
provided with pulleys or gearing for receiving motion.
Two or more radial vanes are fitted into the bowl, abutting the hollow cylinder
when the latter is in its position in the centre of the bowl.
A suitable framing is made to receive the spindle and bowl, and the said framing
carries a series of two troughs in approximation to the revolving bowl, and for the
purpose of receiving the separated cream, and the separated milk.
The spindle is carried at its lower end by a ball footstep, and near the upper
extremity is held by, and rotates in, a suitable bearing so arranged as to be slightly
flexible in case the revolving spindle becomes bent and eccentric.
Dated this 3rd day of January 1896.
F. G. JONES.
H. BRECKNELL.

page_text: BRECKNELL,
I, FREDERICK GEORGE JONES, Engineer, and HENRY
Engineer, both of 64 Lawrence Hill, in the City and County of Bristol, 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:-
Our invention is for an improved centrifugal cream separating machine, and our
improvements relate especially to the separating bowl.
The bowl is preferably of frusto-conical form, but may be cylindrical, or
spheroidal, and is in each case provided with a contracted circular opening at
the top.
The bowl is mounted upou a vertical spindle, the said spindle rotating and
carrying the bowl.
Having reference to the accompanying drawings Fig. 1. is a vertical section.
Through the bowl a, centrally, a cylinder b is fitted, detachably, forming a circular
rigid partition, and provided with orifices 6' 63,... through the walls of the
cylinder for the passage of whole milk.
A deflecting ring c, is formed upon or attached to the base of the bowl,
passages d d are provided at the month of the bowl for delivery of cream, and
correspondingly, passages are provided at e e' for the delivery of separated milk,
f., are regulating screws for controlling the delivery the said milk, g, g' are
vanes to ensure rotation of the milk with the bowl.
Fig. 2. is a plan and part section of the bowl with the cylinder removed, and
shows the cream passages recessed in the rim of the bowl at d d'.
The part in section shows the separated milk passage e.
The milk flows, as
indicated by arrows, through a double passage and is thrown off at the circum-
ference. One or more similar passages are provided in the base and fitted with
regulating screws.
Fig. 3. is an elevation of the bowl a, showing or indicating cream passages d' d
separated milk passage e, regulating screw J, deflecting ring c, vanes g, g', and
spindle j. In the same figure h, represents a trough provided for the reception of
cream thrown off at d d d. and the trough i, correspondingly receives
the separated milk thrown off at the passages e, e'. The said troughs are suitably
carried in the enveloping frame of the machine.
Fig. 4. is a plan, and Fig. 5, is an elevation of the included cylinder 6 and studs
are shown at k, k, which fit into corresponding holes in the rim of the bowl, and
thus prevent the cylinder rotating within the bowl.
The spindle of our machine is rotated suitably by ordinary methods, and the
separation of the cream from the milk is effected by the differences of centrifugal
inertia.
Whole milk is introduced through the aperture shown in the top of the cylinder,
and the separated milk is discharged through the orifices shown at the largest
diameter of the bowl as described, and the cream collecting at the outer face of
the cylinder wall, is ejected at the upper and contracted part of the bowl as
described.
The rigid cylinder is in effect, a regulator, for its outer face coincides with the
cream surface as the cream flows inwards against the said face, and therefore the
milk which is necessarily outside the cream-is prevented from reaching the cream
outlets in case of over feeding.
This is clearly shown in Fig. 1. at x. y. where a represents the cream stratum,
and y. the milk behind the cream.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
1. In a centrifugal cream separating machine the combination with the bowl, of
a rigid cylinder internally, detachable, and provided with orifices at its lower end.
II. In a centrifugal cream separating machine, the combination with a bowl and
an internal rigid cylinder, of a deflecting ring, adjacent to and surrounding the
lower end of the said cylinder.
111. In a centrifugal cream separating machine, the combination with a bowl,
an internal rigid cylinder, and a deflecting ring, of passages provided at the upper
and lower part of the bowl for the discharge of cream, and separated milk; the
discharge regulative by means of screws as shown, and the whole effected sub-
stantially as shown and herein described.
Dated this 30th day of September 1896
F. G. JONES.
H. BRECKNELL.