Year: 1899

page_text: Date of Application, 16th May, 1899-Accepted, 15th July, 1899
A communication by JOHANN DIEDRICH GEORG OHLHAVER, of 8, Deichthorstrasse,
Hamburg, in the Empire of Germany, Merchant.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester,
both in the County of Lancaster, 118, New Street, Birmingham, in the County of
Warwick, and 322, High Holborn, in the County of Middlesex, Civil Engineer,
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:-
In milk centrifugals the separation is effected in a radial direction. In all
drum insertions therefore for centrifugal milk separators it has usually been
considered that the separation is most favourably effected when the milk to be
separated is divided into thin layers in such a way that a radius drawn from the
axis to the drum casing intersects as many of such layers as possible and for this
reason conical, cylindrical, prismatic, spiral or the like partitions have been
proposed for the insertions.
In the improved insertion of this invention on the contrary the milk is not
divided radially into layers.
Experience has shown that the separation is most favourably effected when the
angular velocity of the drum is rapidly imparted to the milk, when the currents
in the drum are suitably diminished, and when the vibrations of the liquid are
removed as far as possible.
This improved insertion takes all these circumstances into the widest considera-
tion. It consists of a combination of radially extending vertical partitions with
perforated horizontal partitions.
The speed of rotation of the drum is immediately imparted to the constantly
inflowing milk by means of the radially extending vertical partitions and the
milk is forced by the horizontal sieves to emerge quite quietly so that currents
are diminished to an indispensable minimum and vibrations are removed.
A form of construction of the insertion is shown in Figs. 1 and 2 of the accom-
panying drawings, in vertical section and plan. It consists here of radially
slotted separate discs a with vertical projections 6 in combination with sieve
discs c.
These discs a and c are arranged alternately one after the other.
It is however not necessary that the projections b should stand at right angles
to the discs a as they may form any suitable angle with said dises and be shaped
as scoops. These projections may also be mounted directly on the sieves or
perforated discs c so that the discs a may be entirely dispensed with. These
projections may also be continuous walls running from top to bottom in which
the horizontal sieve or perforated discs are inserted.
b

page_text: The form of construction is arranged in each case to suit the actual circum-
stances.
Having now particularly described and ascertained the nature of my said
invention and in what manner tlie same is to be performed, as communicated
to me by my foreign correspondent, I declare that what I claim is:
A drum insertion for centrifugal milk separators, consisting of perforated
horizontal partitions and radially arranged vertical partitions, which latter may
stand at right angles to or at an acute angle with the perforated horizontal parti-
tions substantially as hereinbefore set forth.
1000
WM. P. THOMPSON & Co.,
Agents.