NEW OR IMPROVED MACHINERY OR APPARATUS FOR COOLING MILK AND SEPARATING OUT THE CREAM THEREFROM
Year: 1877

page_text: LETTERS PATENT to Walter Alfred Barlow, of 6, St. Paul's Churchyard,
London, Patent Agent and Engineer, for the Invention of "NEW OR IMPROVED
MACHINERY OR APPARATUS FOR COOLING MILK AND SEPARATING OUT THE
CREAM THEREFROM." A communication from abroad by August Fr. Illgen,
of Mittweida, Saxony."
Sealed the 7th December 1877, and dated the 1st October 1877.
PROVISIONAL SPECIFICATION filed by the said Walter Alfred Barlow at the
Office of the Commissioners of Patents on the 1st October 1877.
WALTER ALFRED BARLOW, of 6, St. Paul's Churchyard, London, Patent Agent.
and Engineer. "NEW OR IMPROVED MACHINERY OR APPARATUS FOR COOLING.
MILK AND SEPARATING OUT THE CREAM THEREFROM." A communication from
abroad by August Fr. Illgen, of Mettweida, Saxony.
The object of this Invention is the construction of machinery or apparatus, by
the use of which fresh milk, as taken from the cattle, may be speedily cooled, and the
cream may be separated out therefrom with cleanliness and despatch.
The apparatus consists of two rings held at proper distance apart by tie rods,
forming framing in which is provided bearings for a vertical shaft capable of
rotating, said framing being encased or not, or partially so, as desired, by a circular
screen. The said vertical shaft carries or has keyed thereto a ring, which ring is
provided with hooks from which pails filled with milk are hung.
The pails I employ are flat pails provided with lugs or ears through which
transverse handles or rods are passed. Rotary motion is imparted to the vertical
shaft by means of crossway shaft and bevil gearing actuated by winch handle.
The cooling of the milk and separation of the cream therefrom is effected by
centrifugal force. The pails being filled with the warm milk are hung upon the
hooks of the ring of the vertical shaft in pairs, one pail opposite to another, so as
to balance the weight, and upon the rotary motion being given to the shaft the

page_text: pails will swing around their handles in a radial direction, and rise so that their
sides will occupy a nearly horizontal position. The milk, in consequence of its
greater specific gravity, will remain next to the bottom of the pail, and the cream,
that is, the lighter portions of the treated liquid, will remain or terminate nearer to
the centre of rotation, that is to say, will be gathered to the surface of the liquid,
thus separating out the cream from the milk, and at the same time the air current
produced by the rapid rotation cools the liquid, and thus also facilitates the separation
of the cream.
This treatment continued for from ten to fifteen minutes will suffice
to fully effect the required separation.
The great advantage of this machine is that the separation of the cream and
cooling of the liquid may be effected immediately after it has been obtained from
the cattle, and without the necessity of leaving it to stand to cool in pans or dishes,
cleanliness and rapid work being attained in a process which, effected according to
the usual method, takes considerable time.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Walter Alfred Barlow in the Great Seal Patent Office on the 1st
April 1878.
ง
WALTER ALFRED BARLOW, of 6, St. Paul's Churchyard, London, Patent Agent
and Engineer. "NEW OR IMPROVED MACHINERY OR APPARATUS FOR COOLING
MILK AND SEPARATING OUT THE CREAM THEREFROM." A communication from
abroad by August Fr. Illgen, of Mittweida, Saxony.
The object of this Invention is the construction of machinery or apparatus, by the
use of which fresh milk, as taken from the cattle, may be speedily cooled, and the
cream be separated out therefrom with cleanliness and dispatch.
The apparatus consists of two rings held at proper distance apart by tie rods,
forming framing in which are provided bearings for a vertical shaft capable of
rotating, said framing being encased or not, or partially so, as desired, by a circular
screen. The said vertical shaft carries or has keyed thereto a ring, which ring is
provided with hooks from which pails filled with milk are hung.
The pails I employ are flat pails provided with lugs or ears through which
transverse handles or rods are passed. Rotary motion is imparted to the vertical
shaft by means of crossway shaft and bevil gearing actuated by winch handle.
The cooling of the milk and separation of the cream therefrom is effected by
centrifugal force. The pails being filled with the warm milk are hung upon the
hooks of the ring of the vertical shaft in pairs, one pail opposite to another, so as to
balance the weight, and upon the rotary motion being given to the shaft the pails
will swing around their handles in a radial direction, and rise according to the
increased velocity, so that their sides will occupy a nearly horizontal position. The
milk, in consequence of its greater specific gravity, will remain next to the bottom of
the pail, and the cream, that is, the lighter portions of the treated liquid, will remain
or terminate nearer to the centre of rotation, that is to say, will be gathered to the
surface of the liquid, thus separating out the cream from the milk, and at the same
time the air current produced by the rapid rotation cools the liquid and also
facilitates the separation of the cream.

page_text: In Figs. 1 and 2 of the Drawings is represented, in sectional side and and plan
view respectively, an arrangement of the apparatus.
The two rings B, B, connected and kept at their proper distance apart by vertical
rods A, A, form the frame of the apparatus. The vertical shaft C is kept in position
by the step D at is foot, and a collar D' at its upper end.
Motion is imparted to the vertical shaft by means of a crank handle H secured on
shaft G, and through bevil gearing F, E. A horizontal ring I, supported by radial
rods K, and keyed on the vertical shaft, is provided with hooks K', from which the pails
La and Lb, filled with milk, are hung, said pails being arranged in pairs, one pail
opposite to the other. Rotary motion will be now communicated to the shaft C,
either by hand or machine power, and continued during a space of ten to fifteen
minutes, when the separation of the two fluids will have been completely effected.
The ring with the rotating pails may be protected by a circular screen M, which
will be secured by clamps M₁ bolted thereto.
The advantages of this machine are the perfect separating of the cream and
cooling of it and the milk, immediately after it has been taken from the cow, without
the necessity of leaving it to stand to cool in numerous pans or flat dishes,
cleanliness and rapid work being obtained in a process which, effected according to
the usual method, takes considerable time and requires great care.
It is obvious that a light and portable arrangement of the apparatus could be
constructed and be very useful for domestic use.
Having now described the nature of the said Invention and shown by the
Drawings how the same is to be or may be carried into practical effect, I claim as
the Invention sought to be secured by Letters Patent, a rotating apparatus consisting
essentially of a vertical shaft provided with a horizontal ring, from which, by means
of hooks and the handles of the pails, the latter are hung and made to rotate, whereby
the cooling of the milk and separating of the cream from it is effected.
In witness whereof, I, the said Walter Alfred Barlow, have hereunto set my
hand and seal, this Sixteenth day of February, in the year of our Lord One
thousand eight hundred and seventy-eight.