Improved Apparatus for Use in the Aeration of Milk, and for Attachment to Milk Cans and the like Receptacles.
Year: 1896

page_text: Date of Application, 26th Oct., 1896
Complete Specification Left, 29th July, 1897-Accepted, 18th Sept., 1897
PROVISIONAL SPECIFICATION.
Improved Apparatus for Use in the Aeration of Milk, and for
Attachment to Milk Cans and the like Receptacles.
I, WILLIAM LUPLAU of Park Street, South Yarra, in the Colony of Victoria,
Dairy Expert, do hereby declare the nature of this invention to be as follows:-
This invention has been devised to provide improved apparatus to be employed
in aerating milk and by the use of which only filtered or sterilized air can find its
way into the milk thus obviating or preventing such liquid from absorbing
dangerous or putrefactive germs from the outside atmosphere.
Where it is desired that milk should be aerated for the purpose of ridding it of
animal odors for the better production of cream or for raising or lowering its
temperature by means of warm or cold air the apparatus embodying my invention
causes the air to be thoroughly filtered or freed from germs before it is circulated
in or passed through the milk.
In attaching my apparatus to milk cans, that is to say such cans as are carried
in milk carts to houses in the ordinary way, my invention prevents the ingress of
anything but pure air into the milk cans when the milk is being drawn off in the
usual way by the tap at the bottom of the can.
I shall now describe my apparatus when used in the aeration of milk for
dairying purposes
I employ a can, cask or tank in which the milk is placed and which is almost
filled with the milk to be treated-the top of this receptacle is covered with an
air-tight lid. Through this lid a suction tube proceeds terminating in the air
space between the top of the milk and the cover and is hermetically attached to
the said cover. This tube is connected with a suction pump or other means for.
producing a vacuum, the object being to draw away all air which may accumulate
in the said space between the top of milk and lid of said receptacle."
Another inlet tube proceeds through the said cover (to which it is hermetically
sealed) and down through the milk to almost the bottom of the said receptacle.
This second tube is provided at its top, above the lid or cover of receptacle, with a
box or chamber, preferably funnel shaped, in which is neatly packed or arranged
a quantity of sterilized cotton wool asbestos or other sterilized odorless fibrous
material, the said material being so arranged that no outside air can pass into the
tube which proceeds down into the milk without its having first passed through
the said cotton wool or fibrous material.
In operation the apparatus above described is as follows-
The suction tube first hereinbefore mentioned draws away the air from the
space between the top of milk and cover of utensil. The vacuum, or partial
vacuum, thus caused in the said space induces or draws the outside air in through
the sterilized cotton wool or analogous fibre in the funnel shaped box and down
the tube below same where said air escapes from the end of said tube and proceeds
up through the milk to the top where as aforesaid it (the air) is drawn away by

page_text: the suction pipe and thus the aeration of the milk is continued at the discretion
of the dairyman.
When my invention is applied to. milk cans the displacement caused by the
drawing off the milk at the tap below 'causes the fresh air to be drawn in through
the sterilized cotton wool or other material as aforesaid, and thus prevents the foul
air of the streets, or rights of way, from coming in contact with the milk.
oc
.
11000
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.
Improved Apparatus for Use in the Aeration of Milk, and for
Attachment to Milk Cans and the like Receptacles.
I, WILLIAM LUPLAU of Park Street, South Yarra in the Colony of Victoria,
Dairy Expert 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:
This invention has been devised to provide improved apparatus to be employed
in aerating milk and by the use of which only filtered or sterilized air can find its
way into the milk thus obviating or preventing such liquid from absorbing
dangerous or putrefactive germs from the outside atmosphere.
Where it is desired that milk should be aerated for the purpose of ridding it of
animal odors for the better production of cream or for raising or lowering its
temperature by means of warm or cold air the apparatus embodying my invention
causes the air to be thoroughly filtered or freed from germs before it is circulated
in or passed through the milk.
In attaching my apparatus to milk cans, that is to say such cans as are carried
in milk carts to houses in the ordinary way, my invention prevents the ingress of
anything but pure air into the milk cans when the milk is being drawn off in the
usual way by the tap at the bottom of the can
I shall now describe my apparatus when used in the aeration of milk for dairying
purposes and with reference to the accompanying sheet of drawings in which
Figure 1. shews a plan of the apparatus and Figure 2. a vertical section of the
same on line X X of Figure 1.
I employ a can, cask, tank or receptacle A. in which the milk is placed and which
is almost filled with the milk to be treated--the top of this receptacle is covered
with an air-tight lid B. Through this lid a suction tube L. proceeds terminating
in the air space between the top of the milk and the cover and is hermetically
attached to the said cover. This tube is in practice connected with a suction
pump or other means for producing a vacuum, the object being to draw away all
air which may accumulate in the said space between the top of milk and lid of
said receptacle, and at the same time permitting aeration of the milk to take
place.
Another inlet tube C. proceeds through the said cover (to which it is hermeti-
cally sealed) and down through the milk to almost the bottom of the said recep-
tacle A. This tube is provided at its top, above the lid or cover of receptacle, with
a box or chamber D. in which is neatly packed or arranged a quantity of sterilized
cotton wool, asbestos or other sterilized odorless fibrous material E. the said
material being so arranged that no outside air can pass into the tube which

page_text: proceeds down into the milk without it having first passed through the said cotton
wool or fibrous material.
In operation the apparatus above described is as follows:-
The suction tube L. draws away the air from the space between the top of milk
and cover B. of utensil. The vacuum, or partial vacuum, thus caused in the said
space induces or draws the outside air in through the sterilized cotton wool E. or
analogous fibre in the box D. and down the tube C. where said air escapes from
the end of the said tube and proceeds up and through the milk to the top where
as aforesaid it (the air) is drawn away by the suction pipe L. and thus the aeration
of the milk is continued at the discretion of the dairyman.
When my invention is applied to milk cans the tube L. may be dispensed with
and the displacement caused by drawing off the milk at the tap F. below causes
the fresh air to be drawn in through the sterilized cotton wool or other material
as aforesaid, and thus prevents the foul air of the streets, or rights of way, from
coming in contact with the milk.
Preferably I provide a jacket C. around and at the bottom of the can with an
inlet tube H. for the entrance of hot or cold water and a tap J. near the bottom
of the jacket for the exit of the water such tap preferably having a screw end for
securing a lead away tube thereto. At the top of the jacket a short open tube K.
is set and is attached to the tube L. by a short piece of flexible piping. K. and L.
are each provided with caps K¹ and L.
The operation of the jacketted appliance is as follows:-
Water is placed in the jacket G. in order to keep the milk at the required
temperature either cold or hot as the case may be.
The tap J. will be turned so as to cause an outflow of water from the jacket
and a consequent displacement of air when (owing to the tubes K. and L. being
connected) a suction will be caused within the receptacle A. thus causing air to
be drawn through the filtering medium E. and tube C. into the receptacle and so
aerating the milk.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed I declare that what I
claim is:-
1. In combination a receptacle as A., box as D., sterilizing or filtering medium
as E., air inlet pipe as C., suction connection tube as L., substantially as and for
the purposes set forth.
2. In combination a receptacle as A., box as D., sterilizing or filtering medium
as E., air inlet pipe as C., and a draw off tap as F., substantially as and for the
purposes set forth.
Dated this 20th day of July 1897
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.