Improvements in or connected with Cans, Pans, Churns, and other like Vessels for the Transport, Storage, or Treatment of Milk or Cream.
Year: 1897

page_text: Date of Application, 6th Apr., 1897
Complete Specification Left, 23rd Dec., 1897-Accepted, 19th Feb.,
1898
PROVISIONAL SPECIFICATION.
Improvements in or connected with Cans, Pans, Churns, and other
like Vessels for the Transport, Storage, or Treatment of Milk or
Cream.
I, WALTER CARTER, of 55, Station Road, Swinton, Manchester, in the County
of Lancashire, do hereby declare the nature of this invention to be as follows:-
―
My invention relates to improvements in or connected with cans, pans, churns,
and other like vessels for the transport, storage or treatment of milk or cream,
whereby certain advantages are obtained.
In order that the nature of my invention may be more readily understood J
shall proceed to describe by way of types or examples certain contemplated forms
thereof.
In the first place I shall describe a contemplated form of my invention which
refers more particularly to a milk pan..
In this form the pan which contains the milk or cream consists of an inner and
an outer casing of metal or other suitable material hermetically attached together
but separated from one another by a space which can be filled with cold water,
freezing mixture or the like. Access to this space is obtained by means of an
inlet which is situated near the top of the vessel. This inlet. may be provided with
a screw plug or other suitable closing device. I also provide a discharge or outlet
pipe leading from the lowest part of this space between the inner and outer
The end of this escape
casings, for emptying the cooling water or other contents.
pipe I provide with a screw plug or other suitable closing device.
In another contemplated form of my invention the general arrangement is the
same as that just described with this difference however that the inner casing or
milk can proper is not hermetically attached to the outer casing but is provided
with a lip which rests upon the outer casing so that the whole pan proper can he
lifted out and away from the external casing. When the inner pan is in place
within the outer casing, it may be held there by binding screws or other suitable
means. The same arrangements as regards inlet and outlet. pipes may be used in
this form as in that previously mentioned.
The forms of pan which I have just described can be also used for warming
milk in the manufacture of cheese in which case the space between the inner
and outer casings would be filled with hot water.
I shall now describe another contemplated form of my invention which has refer-
ence to railway milk cans suitable for the conveyance of milk. Here as in the
first case which I have described I make use of an inner and an outer casing.
This outer casing entirely surrounds the railway milk can save at the top or lid
and this may if thought necessary be also similarly constructed of a double casing.
Near to the shoulder of the can I place an inlet for the admission of the cooling
material and at the bottom of the can I place an outlet, as before. In the case of
large cans, churns, or the like I may strengthen the side walls by means of vertical
angle irons, helical stays, or equivalents thereof which may also serve to divide

page_text: the said space into sections. These stays are not carried down to the bottom of the
can but stop a little short of it in order to enable the free flow of the cooling water.
In connection with a contemplated form of my invention wherein the inner
casing can be lifted out of the outer I shall now describe one convenient form of
attaching the inner to the outer casing. Upon the outer casing I hinge at con-
venient points round the pan, curved pieces of metal so bent that when the inner
pan is in place the hollow parts of the bends embrace the projecting lips of the
inner can. Through the end of these curved pieces of metal I pass a screw which
when screwed up tight presses upon the lip of the inner can and so secures the
inner to the outer casing.
I desire it to be understood that I do not bind myself to any of the details
mentioned in this specification, as it is obvious that a person skilled in this
particular art may vary to an almost indefinite extent the structural details of my
invention.
Dated this 6th day of April 1897.
Improvements in or connected with Cans, Pans, Churns, and other
like Vessels for the Transport, Storage, or Treatment of Milk or
Cream.
I, WALTER CARTER, of 55, Station Road, Swinton, Manchester, in the County
of Lancashire, 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:-
My invention relates to improvements in or connected with cans, pans, churns,
and other like vessels for the transport, storage or treatment of milk or cream,
whereby certain advantages are obtained.
In order that the nature of my invention may be more readily understood I shall
proceed to describe certain typical forms thereof which typical forms have given
good results in practice and in order that the description may be more readily
grasped, I have appended hereto a sheet of drawings illustrating the said forms.
In these drawings,
Figure I is a vertical section of one form of my invention.
Figure II is a vertical section of the outer casing of another form of my
invention.
Figure III is a vertical section of the inner pan which fits inside the outer
casing illustrated in Figure II.
Figure IV is a plan view of the said inner pan.
Figure V is a vertical section of the form illustrated in Figures II, III and IV
showing the inner pan in position within the outer casing, but illustrating a
different method of attaching the two said parts together.
Figure VI is a vertical section of another form of my invention adapted for
use as a railway milk can.
In these drawings like numerals of reference refer to similar parts.
Referring now to the drawings I have illustrated in Figure I a form of my
invention designed to be used as a milk pan. In this form the vessel which contains

page_text: the milk or cream consists of an inner pan 1 and an outer casing 2 of metal or
other suitable material hermetically attached together but separated from one another
by a space 3 which can be filled with cold water, freezing mixture or the like.
Access to this space is provided by means of inlet 4 which is situated near to the
top of the vessel. This inlet 4 may be provided with a screw plug 5 or other
suitable closing device. A discharge or outlet pipe 6 is provided leading from
the lowest part of the space 3 between the inner pan 1 and outer casing 2, for
emptying the cooling water or other contents. The end of this discharge or outlet
pipe 6 I also provide with a screw plug 7 or I may employ any other suitable
closing device.
In Figures II, III, IV and V I illustrate a modification of the herein before
described form of my invention, it differing therefrom in that the inner pan 1 is
not hermetically attached to the outer casing 2 but is provided with a flange S
which rests upon rim 9 of the outer casing so that the inner pan 1 can be lifted
out and away from the said outer casing 2. The general arrangement of this
form of my invention is the same as that existing in Figure 1. 4 is the inlet
situated at the top of the vessel and is provided with the screw plug 5. 6 is the
discharge pipe leading from the space 3 and its end is closed by the screw plug 7.
When the inner pan is placed within the outer casing it may be held there by
any suitable means. I have illustrated two methods of thus attaching these two
parts together. The method illustrated in Figures II, III and IV consists in
forming on the flange 8 of the inner pan projections 10 which projections correspond
in number with the thumb screws 11 placed in the rim 9 of the outer casing. The
inner pan is dropped into the outer casing with the depressions 12 opposite the
thumb screws 11 and is then slightly turned so that the thumb screws enter
the orifices 13 formed between the projections 10 and flange 8. The thumb screws
can then be screwed up thus ensuring a good attachment between the outer casing
and the inner pan.
In Figure the method of attachment illustrated consists of hinging at con-
venient points round the outside of the outer casing 2, curved straps of metal 14
which are so are bent that when the inner pan is in place the hollow parts of the bends
embrace the projecting flange of the inner pan. Through the end of these curved
straps 14 are passed screws 15 which when screwed home press the flange of the
inner pan and so secure the said inner pan to the outer casing.
For the purpose of easily removing the inner pan from the outer casing I may
form handles 16 or the like upon the flange 8 of the inner pan. Handles of any
convenient form may also be attached to the outer casing for the purpose of easy
transportation of the whole vessel if desired.
The forms of pan which I have just described can also be used for warming milk in
the manufacture of cheese in which case the space between the inner pan and the
outer casing would be filled with a heated liquid. When it is desired to gather the
cream from the milk I prefer to use a shallow pan as illustrated in Figure I
though not necessarily of that form as in that case the cream is thrown up much
better and quickly.
In Figure VI I illustrate another form of my invention which has reference to
railway milk cans suitable for the conveyance of milk. Here, as in the form illus-
trated in Figure I, I make use of an inner pan 1 and an outer casing 2 hermetically
attached, with a space 3 between them. The lid may also if desired be similarly
constructed of a double casing. Access to this space 3 is obtained by means of
the inlet 4 situated at or near the top of the outer casing and this inlet 4 is closed
by means of a screw plug 5. The space 3 can be emptied of its contents by means
of the outlet 6 which is closed by means of the screw plug 7. This outlet 6 is
illustrated as situated at the bottom of the side of the outer casing but it may
situated in the bottom or anywhere else that is found convenient. In the case of
large cans, I strengthen the sides by means of vertical angle irons, helical stays, or
equivalents thereof 17 which may also serve to divide the said space 3 into sections.
These stays are not carried down to the bottom of the can but stop a little short

page_text: thereof in order to enable the free flow of the cooling liquid employed. The bottoni
of the inner pan may also be supported or strengthened by means of angle irons
or the like. Handles may be attached to the outer casing for the purpose of
facilitating transportation of the can if desired.
When milk is to be sent a long journey in one of my railway cans the space 3
is filled with cold water thus keeping the milk good and sweet for a much longer
period than in the ordinary milk churn.
For the screw stopper illustrated any of the convenient forms of stopper may be
employed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The arrangement and combination of parts substantially as set forth with
reference to Figure I.
2. The arrangement and combination of parts substantially as set forth with
reference to Figures II, III and IV.
3. The arrangement and combination of parts substantially as set forth with
reference to Figure VI.
4. The fastening device illustrated in Figures II and IV.
5. The fastening device as set forth with reference to Figure V.
1
100%
Dated this Srd day of December
100%
For the Applicant,
J. G. LORRAIN, M.I.E.E., M.I. Mech. E.,
Norfolk House, Victoria Embankment, London, W.C.,
Chartered Patent Agent.