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Патент USA US2380771

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July 31, 1945.
H. M. MCDONALD
2,380,771
APPARATUS FOR FILLING CONTAINERS WITH MILK AND OTHER LIQUIDS
Filed Oct. 15, 1941
2 Sheets-Sheet 1
ATTOR/VEKZ
July 31, 1945.
H. M. MCDONALD
2,380,771
APPARATUS FOR FILLING CONTAINERS WITH MILK AND OTHER LIQUIDS
Filed Oct. 15, 1941
2 Sheets-Sheet 2 _
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By
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Patented July 3.1, 1945
£53991”!
UNITED STATES PATENT OFFICE,
APPARATUS FOR FILLING CONTAIN“!
WITH MILK AND OTHER LIQUIDS
nco‘torMurdoch
l
alowland,
_ m ueeniyan,
Application October is, 1041, Serial No. 415,124 '
_ in Australia 0mm- 24, 1m
2 Claims. (cl. 220-110)
This invention relates to improvements. in and
tion will pass upwardly through the branches in
connected with apparatus for ?lling containers
' contact with and in opposition to the milk now
with milk and other liquids and refers especially.
i118 into the cans and then through the distribut
but is not limited, to apparatus for use with milki118 piper!!! the same direction as the ?ow of the
ing machines wherein the milk is drawn from 5 milk to the vacuum return pipe.
cows and delivered to a receptacle and thence to
In a modi?cation of the invention,‘ a pipe for
a plurality of milk cans or like containers under
supplying milk or other liquid to be delivered to
‘the in?uence of a vacuum.
the containers can be connected direct to the
Hitherto, it has been proposed to direct‘ the
distributing pipe and the vacuum return pipe can
milk from the cows to a'; collecting receptacle 10, be coupled toabacklash eliminating device which
under vacuum and to connect the receptacle to
is connected to the vacuum pump and the air
' closed containers, such as milk cans, in series by
pipe line of the milking machine.
a number of separate pipes whereby the milk will
The invention in its simplest form is adapted
be induced to iiow into the containers by the
for ?lling cans and other containers to a desired
vacuum maintained in the system.
.15 height with milk or other liquid by gravity from
The disadvantages experienced with ?ning gpa suitable source of supply and without the aid
paratus of the above type are that the milk is
subjected to a substantial turbulence with the
of a vacuum as when the removal of odours is not
required.
.
result that particles of butter are formed in the
In order that the invention. the Object and
milk, the milk is not effectually de'odorised, it 20 nature of which have been set forth. may be
cannot bedelivered into a large number of con-
'readily understood. reference will now be had to
tainers without adversely affecting the control
the aecomlienyins Sheets 01' explanatory draw
of the vacuum and the milk delivered into the
lugs wherein:
diiferent containers will not contain a uniform ‘
' Figure 1 is a view in. elevation showing the
quantity of butterfat owing to a portion of the 25 invention ?liplled to ‘mull receiving receptacle
cream rising in the milk in the ?rst container
passing on with the milk to the other cans.
The object of the present invention is to provide simple and economically constructed means
which will enable cans and other containers to be 30
and Vacuum producinK apparatus 01 8' Vacuum
milkinB mlchme
Fisure 2 is a View in plan of lime 1
Figure 3 is a view in end elevation of Figure 1. Flsure 4 18 I View in elevation of a modi?ed
easily and quickly nlled to a predetermined height
with milk and other liquids and which when used
with a vacuum controlled milking machine will
enable the ‘milk to be delivered to any desired
number of cans in a manner that will ensure it 35
form of the invention
Figure 5 is a view in elevation partly in section
of pert of the milk distributing and vacuum re
turn pipes and shows the manner of connecting
the distributm Pipe to?he comivilltl‘ii
being e?ectually deodorlsed and passed in a more ,
or less quiescent state from the receptacle‘- to a
number of containers while maintaining a uni.
In these drawings, like characters of reference
are employed to indicate the same or correspond
ing parts in the diiferent views and the numeral
form grade of milk in all the containers.
‘I designates a milk storage receptacle of substan
Brie?y, the invention as applied to vacuum con- 40 tial size having an opening in the top thereof pro
trolled milking machines having a closed milk
' storage receptacle arranged in communication
vided with a removable cover t of approved type
which is adapted to eifectually exclude air from
with a vacuum pump and the mug and vacuum
the receptacle when a partial vacuum is produced
pipes leading to the teat cups consists of an outtherein
let from the closed receptacle communicating 46
A milk pipe 1 passes from the teat cups (not a
with a milk distributing pipe formed of detach‘ shown) to the top of the cover 0 and when a
ably connected sections of substantial diameter
cooler-i8 located in the receptacle. the milk 111
and having depending branches entering a corresi'evitatlns in a thin ?lm thereon!‘ is e?ectually
sponding number or milk cans, a vacuum return
deodorlsed and reduced in temperature at this
Dine ior placinugnthetiouter end oi’ the distributing 50 point.
ppe n comm
ca on with the vacuum pump,
1
‘Y
- The top of the receptacle is connected b
a
and a backlash eliminating device interposedbe-
pipe 0 to an air pipe 81 which places the teat (gips
tween the storage receptacle and the vacuum'
in communication with a vacuum pump I and in
pump constructed and arranged whereby the air
a horizontal portion of this pipe 8 is ?tted a
displaced from the cans during the ?lling opera- It backlash eliminating device ll comprising a cover
2,880,771
2
II and a detachable bowl l2 0! glass or other
material into which one end of the pipe connected
to the receptacle depends and is ?tted with a
non-return valve ll of approved construction.
The non-retum valve ii on the end or the por
or the cans in succession and without creating
any turbulence or agitation in the milk. The
milk will ?ow freely through the distributing pipe
l1 and branches il in such a way that the cans
will be ?lled progressively, that is to say. the
greater amount or the milk will now into the ?rst
can and at the same time in progressively de
creasing quantities into the succeeding cans until
tion of the pipe I depending into the bowl l2 of
the backlash device is of the ?ap type and is
retained on its seat by gravity.
each can is ?lled. The air displaced from the
An outlet pipe ll fitted with a cock is is ?tted
to the bottom of the receptacle 5 and is connected 10 cans during the ?lling operation passes upwardly
through the branches It in opposition to‘the ?ow
by a ?exible piece of tubing Ii to a distributing
of milk and through the distributing pipe, in the
pipe i'l having a number of depending branches
same direction as the milk, to the return pipe 22.
l8 passing into a corresponding number of milk
Wheneachcanhasbeen?lledwithmilktothe
cans I! arranged in juxtaposition to each other.
level of the branch pipe I! depending therein, the
The end of the distributing pipe remote from the
partial vacuum will be cut oi! from the can and
receptacle is arranged in communication by
the milk will continue to rise above the lower end
means of a return pipe 2! with the top or the re
of the branch pipe until the air pressure in the
ceptacle as shown.
can equals the gravity pressure of the milk within
The vacuum return pipe 20 is provided with a
cock 2l of approved design. The pipe II for dis
tributing the milk from the vat to the cans II is
01' substantial diameter and preferably is made of
a plurality of detachable sections having angu
larly disposed T pieces on one of their ends
whereby any number of sections may be used to
suit the number and arrangement of cans to be
?lled, see Fig. 5.
Each section of the distributing pipe consists of
a horizontal portion 22 having one or its ends
?tted into a horizontal socket of a T-piece 22 into
the depending socket of which is ?tted with a
short branch pipe I. adapted to pass through a
hole in the lid 2| of a can whilst the opposite
horizontal socket is adapted to receive the free
end of the horizontal portion 22 of a similar sec
tion of distributing pipe.
The pipe I! depending from the vertical branch
the branch pipe. The balancing of the air and
gravity pressures results in the cessation of the
?ow of milk to the ?lled can and ensures the milk
therein remaining in a quiescent state. More
over, the whole of the milk passing from the re
ceptacle i ?ows direct to the remaining cans
without disturbing the milk in the ?lled cans or
in any way in?uencing the butteriat content
therein-
-
when all or the cans have been ?lled or the
?lling operation has been completed, the tap II
in the discharge pipe
from the receptacle
and the tap 2| in the vacuum return pipe 2.
passing from the cans are turned oil and the lids
are removed from the cans and replaced by ordi
nary lids.
When the lids 24 are ?tted with branch pipes
ll having taps therein the taps are closed after
the cans are ?lled and before the distributing pipe
is removed from the branch pipes. The ?lled
sumcient depth to determine the point to which
the cans are to be ?lled and a sealing ring 25 (see 40 cans are thereby sealed under vacuum and they
can be replaced by another set of cans.
Fig. 5) of rubber is provided on the branch I.
The purpose of the "backlash" eliminating de
for effectually excluding air from the can when
vice II is to prevent atmosphere laden with oily
the milk is being delivered thereto. Alterna
or other vapors
irom the pump or from
tively, the pipes II can be secured to the lids 24
the air pipe to the milking system.
and the depending bosses on the T-pieces 23 can
be detachably secured thereto in any approved
The term "backlash" is intended to mean the
action which takes place upon the frequent peri
way. When the branch pipes are ?tted to the
ods of instantaneous equalisation of atmospheric
lids 24 they can be provided with taps (not
pressure between the milk and air pipe lines due
shown) which may be closed and the distributing
pipe removed when the cans are ?lled so that a
to the operation or a pulsator (not shown) and
partial vacuum can be retained in the can and
which if not arrested causes the return to the
the milk delivered to hospitals and other places
milk, of unwanted feed and other odors already
without permitting the atmosphere to come into
drawn o?f with oily and other deteriorating va
contact with the milk.
pors which are associated with mechanically
of the T-piece 23 projects into the milk can to a
The free ends of some or the horizontal sec
tions 22 of the distributing pipe may be provided
with two or more radially disposed sockets
whereby the sections may be assembled to suit
any arrangement of milk cans and the open ends
of the branches not in use can be closed by rub
ber plugs 26 or the like, see Fig. 2.
The ends of the sockets accommodating the
free ends of the sections 22 or the distributing
pipe are ?ared and sealing rings 2! of rubber
slipped'over the pipe are placed against the sock
ets to effectually prevent the ingress of air thereto
and similar sealing devices may be employed with
all “slip-in” connections between the parts of the
operated milking machines.
Thus when the machine is in operation the
valve it in the backlash eliminating device will
remain open during the periods when a partial
vacuum is produced within the milk bowl l2 and
air pipe line I‘ and will close automatically to
isolate the milk system from the air pipe line and
pump when the partial vacuum is destroyed in
the air pipe line by the action or the pulsater.
The backlash eliminating device will also serve to
isolate the milk system from the atmosphere and
pump should the pump break down or an air leak
occur in the air pipe line.
The bowl or the backlash eliminating device
_
In operation, the milk passes from the recepta 70 also serves to entrap any moisture which may
pass thereto from the air pipe l‘.
cle 5 to the distributing pipe I’! supported above
The exclusion of air during the ?lling process
all of the milk cans and as the sections 22 of the
‘makes possible a milk that is free from air pock
distributing pipe l‘l are connected to and ar
ets and the contributory contaminating e?ect oi
- ranged in communication with the vacuum sys
Mum-inevitably introduced into the milk
tem, the milk will ?ow continuously to and till all
apparatus.
/1
2,380,771
thereby, and minimises sponginess, blowing and
gassing.
In adapting the invention to a vacuum milking
machine which is' not provided with a storage re
ceptacle, the milk pipe 1 can be coupled direct to
the upper end of the distributing pipe and the
3
the ends of the sections of the distributing pipes
are arranged so that the sections can be disposed
to suit the disposition of the cans or other con
tainers.
If preferred, the return pipe can be ?tted with
vacuum return pipe 20 can be connected to a
a glass tube to indicate when all of the cans or
containers are filled.
backlash eliminating device 21 (similar to III)
which is arranged in communication with the
vacuum pump and the air pipe line 81, as shown
in Figure 4.
In Figure 4 the numeral 11 indicates the portion
of the milk pipe which passes to the distributing
pipe l1 and in this instance a tap similar to I5
The invention is exceedingly simple in con
struction and operation, and in use will be found
thoroughly e?lcient for the purpose for which it
has been devised.
I claim:
1. An apparatus for ?lling a series of containers
is inserted at an approved point in the length of
the milk pipe. In this view a backlash eliminat
ing device 21 is shown interposed between the
vacuum pump and the air pipe line 8 and the nu
meral 28 indicates the pipe connection between
the backlash eliminating device 21 and the vacu- .
um return pipe 20. In this instance the connect
ing pipe 28 is shown coupled to the return pipe
20 by a T-piece 29 and the upper branch of the
T-piece is closed by a removable plug 30 which
can be easily removed to facilitate cleaning op
erations.- The end of the pipe 28 depending with
in the backlash eliminating device 21 is ?tted with
a gravity valve which will close automatically
when the vacuum pump is rendered inoperative.
having air-tight closures thereon with milk un
der a partial vacuum from a source of supply
comprising a distributing pipe of substantial di—
ameter adapted to be supported above all of the
containers and connected at one end to the source
of supply, a branch pipe depending from the dis
tributing pipe above each container and adapted
to pass through the closure thereon, a vacuum
pump, a covered bowl, a pipe connecting the va
cuum pump to the cover on the bowl, a pipe hav
ing one end passing through the cover and de
pending within the bowl and its opposite end con
nected to the end of the distributing pipe remote
from the source of supply, and a non-return valve
on the end of the pipe depending within the bowl.
2. An apparatus for ?lling a series of containers
- In this adaptation of the invention, the milk 30 having air-tight closures thereon with milk under
a partial vacuum from a source of supply'com
passes direct from the milk pipe ‘I to the distrib
uting pipe l1 and cans I9 and the milk is at all
times under the influence of a vacuum. When
prising a closed storage receptacle for the ,sup
ply of milk, a distributing pipe of substantial size
the cans have been ?lled with milk the tap I5 is
connected at one end to the lower part of the
closed and the distributing pipe is removed as 35 storage receptacle, a branch pipe depending from
hereinbefore described and replaced on another
the distributing pipe above each container to be
set of empty cans.
?lled and passing through the closure thereon, a
In adapting the invention to the ?lling of cans
pipe connecting the end of the distributing pipe
and other containers without the use of a vacu
remote from the storage receptable to the upper
um, care must be exercised to provide the con 40 part of the said receptable, a vacuum pump, a
tainers with airtight lids or closures and the re
covered bowl, a pipe connecting the vacuum pump
turn pipe for the escaping air is taken from the
to the cover on the bowl, a pipe having one end
last or lowest receptacle to the top of the supply
passing through the cover on and depending with
tank or to a point level therewith, when a supply
in the bowl and its opposite end connected to
tank is used.
the upper part of the storage receptacle, and a
In this adaptation of the invention the distri
non-return valve on the end of the pipe de
buting pipe and cans or other receptacles are ar
pending within the bowl.
ranged so that the milk will gravitate freely
HECTOR MURDOCH MCDONALD.
through the former to the latter. The sockets on
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