Improvements in Milk Testers.
Year: 1893

page_text: Date of Application, 27th Jan., 1393
Complete Specification Left, 27th Oct., 1893-Accepted, 2nd Dec., 1893
.
PROVISIONAL SPECIFICATION.
Improvements in Milk Testers.
I, MIKAEL PEDERSEN, of Kingsley House, Dursley, in the County of
Gloucester, Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to milk tustera of the kind alapted to be subjected
to centrifugal action in order to ascertain the quantity of cream contained by
milk.
My improved milk tester comprises two cylinders or pieces of tube adapted to
At one within the other. The larger cylindor or piece of tube is completely closed
nt one end and open at the othor whilat the other cylinder or piece of tube is open
at one end and partially closed at the other by a plug of glass having a hole
therein of less diameter than the internal diameter of the cylinder, an opening
being formed in one side of the said cylinder adjacent to the plug in order that the
quantity of cream can be ascertained.
In using my milk tester I fill the larger cylinder with the milk to be tested and
and then introduce the smaller tube into the same the open end being introduced
first so that the smaller cylinder is completely filled, any surplus milk escaping
through the hole in the plug or between the two cylinders. The tester is now
placed on the centrifugal diso with the glass plug towards the centre thereof, and
subjected to centrifugal action whereby the cream will be caused to enter the small
hole in the plug its proportion relatively to the milk being thereby more readily
ascertained than if the part of the tester in which the cream accumulated was of
the same diameter as the other part.
Dated this 27th day of January 1843.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,. Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Milk Testers.
I, MIKAEL PEDERSEN, of Kingsley House, Dursley, in the County of
Gloucester, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascortained in
and by the following statement:-
My invention relates to milk-testers of the kind adapted to be subjected
to centrifugal action in order to ascertain the quantity of cream contained by
milk.
My improved milk tester comprises two cylinders or pieces of tube adapted to
fit one within the other. The large cylinder or casing is completely closed at one
end and open at the other whilst the other cylinder or piece of tube is open at one
end and partially closed at the other by a plug of glass having a hole therein of
loss diameter than the internal diameter of the cylinder, an opening being formed
in one side of the said cylinder adjacent to the plug in order that the quantity of
cream can be ascertained.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a longitudinal section of my improved milk-tester ; and,
Figures 2 and 3 are longitudinal sectional views of the two parts of the tester :
Figure 4 is a longitudinal section illustrating a modification of my invention.

page_text: a is the outer cylinder or casing having the end closed, and is the inner
cylinder having inserted at one end the glass plug d provided with the tubular
passage of small diameter relatively to the said cylinder, the said tube e having
formed in one side thereof adjacent to the plug dn slot through which the cream
which accumulates in the passago e of the plug d under the contrifugal action may
bo scen.
In using my tester I fill the large cylinder a with the milk to be tested and then
introduce the smaller cylinder e into the same, the open end of the said cylinder c
being first introduced so that the said cylinder o together with the passage e will be
filled with milk, any surplus milk escaping through the hole in the plug or between
the two cylinders.
A series of testers filled as above described are placed on the centrifugal disc
with the glass plugs towards the centre thereof and subjected to centrifugal action,
whereby the cream contained by the milk will be caused to enter the small hole in
the plug, the small diameter of the holo enabling the quantity of cream contained
by the milk introduced into the tester to be rendify ascertained by inspection
through the slot ƒ.
In order to ensure that no cream shall accumulate against the inner end of the
plug I preferably form the inner cylinder o with a flange g on its inner surface,
the said flange on one side being provided with a flat seat against which the plug e
will rest whilst the other side is inclined or bevelled so as to form a gnide for the
cream into the passage e.
In the modification of my invention shewn in Figure 4 the inner tube e is
dispensed with, the glass plug being arranged to be introduced within the
cylinder a. In this case a flange g is also arranged within the tube a but the said
flange is represented as being of greater diameter internally than that shown in
Figures 1 and 3, a corresponding bevel being formed in the end of the plug d.
am aware that milk testers have been made in which the outer casing is made
of two parts adapted to be tightly fitted together; auch testers, however, possess
the disadvantage that thoy are difficult to fill, and that they are liable to leak BO
that the correct ostimate of cream contained by the milk is not ascertained.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what 1
claim is :-
1. A milk-tester having an outer casing designed to be filled with milk and an
inner part or cylinder adapted to be introduced into the said casing, substantially
as described.
2. A milk-toster having an outer tubular caso or cylinder closed at one end and
a glass plug having a tubular hole therethrough adapted to be introduced into the
open end of the said case or oylinder, the said plug being carried by a tube fitting
within the outer casing, substantially as described by reference to Figures 1 to 3 of
the accompanying drawing.
3. The modified form of milk-tester wherein the plug with the tubular passage is
introduced directly into the outer casing, substantially as described by reference to
Figure 4 of the accompanying drawing.
"
Ostale 1009
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.