IMPROVEMENTS IN AND CONNECTED WITH CANS OR RECEPTACLES FOR CONTAINING AND CONVEYING MILK
Year: 1876

page_text: LETTERS PATENT to William Poole, of 32, Thurston Road, Lewisham, in the
County of Kent, Lamp Manufacturer, for the Invention of "IMPROVEMENTS IN
AND CONNECTED WITH CANS OR RECEPTACLES FOR CONTAINING AND CONVEYING
MILK"
Scaled the 18th July 1876, and dated the 1st April 1876.
PROVISIONAL SPECIFICATION left by the said William Poole at the Office
of the Commissioners of Patents on the 1st April 1876.
6
WILLIAM POOLE, of 32, Thurston Road, Lewisham, in the County of Kent, Lamp
Manufacturer. IMPROVEMENTS IN AND CONNECTED WITH CANS OR RECEPTACLES
FOR CONTAINING AND CONVEYING MILK."
This Invention which relates to certain improvements in and connected with
cans or receptacles for containing and conveying milk, is founded upon the well
known principle that the exclusion of atmospheric air from the interior of a vessel
containing perishable liquid contents, tends to prevent the 'deterioration of such
contents for a considerably augmented period of time, and consequently allows of
the conveyance thereof for a considerably increased distance without deterioration,
and the Invention consists in the following adaptation of means for carrying this
principle into practical effect.
In constructing cans or receptacles for containing and conveying milk according
to this Invention, I prefer to make them of a cylindrical shape in lieu of as hitherto
of a tapering or conical shape, forasmuch as it allows of the storage and conveyance
of a greater quantity of milk in a can, and of the can being easily and thoroughly
cleansed; but this shape of can is not essential to the Invention. At its top or at
an upper part however I somewhat bulge the can outwardly, or I form it with an
equivalent inner projecting rim for the purpose which will subsequently become
clearly apparent, but I prefer the inner projecting riu, as such a construction
allows of the lid or cover of the can being rested thereupon when placed loosely in
the can.
The peculiarity of the construction of the lid or cover constitutes a distinguishing
feature of this Invention, inasmuch as it is the principal means of enabling the
especial object of the Invention to be carried practically into effect.
Its construction I will now proceed to describe:-The lid or cover is formed of
two superposed dises of a diameter somewhat less than that of the top hoop or

page_text: mouth or opening of the can or milk receptacle, the flanges or outer parts of which
discs are turned away from each other so as to make a V groove when placed in
juxtaposition. In this groove or between the bevilled or angular flanges I arrange
an elastic or extensible ring or band. The under surface of the lower disc I prefer
to make of a rounded or flattened conical shape, and when in position in the can
this under surface rests directly upon the surface of the milk which is otherwise
retained by the can. Between the upper and lower discs I make a suitable recess
or air space, the top being open to the atmosphere through three or more holes or
apertures. The under disc I also provide centrally with an upwardly projecting
screw which passes through a central hole made in the upper disc, above which it
engages with a screwed nut.
When in use the can is filled up to the said rim with milk, and the cover or lid is
then placed loosely in position resting upon the said rim and milk, the screwed nut,
is then turned by a key or spanner or otherwise, and forces the discs together, and
compresses the elastic or extensible ring tightly against the inner circumference of
the can, effectually sealing the liquid contents from contact with the external air.
Any air between the discs or immediately under the lower one escapes at the same
time through the said air space and openings.
By the combination of these improvements the following advantages constituting
material objects of this Invention are attained-The can is made to hold more
milk and can be easily and thoroughly cleansed. Agitation and churning thereof
during transit are prevented, the milk being preserved and kept in its natural state,
which is the essential object of this Invention, and loss is avoided; and there is
obtained a greater facility in moving the cans about and in packing them as they
can be arranged in any position.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Poole in the Great Seal Patent Oflice on the 28th September
1876.
WILLIAM POOLE, of 32, Thurston Road, Lewisham, in the County of Kent, Lamp
Manufacturer. "IMPROVEMENTS IN AND CONNECTED WITH CANS OR RECEPTACLES
FOR CONTAINING AND CONVEYING MILK."
This Invention, which relates to certain improvements in and connected with
cans or receptacles for containing and conveying milk, is founded upon the well-
known principle that the exclusion of atmospheric air from the interior of a vessel
containing perishable liquid contents tends to prevent the deterioration of such
contents for a considerably. augmented period of time, and consequently allows of
the conveyanco thereof for a considerably increased distance without deterioration;
and the Invention consists in the following adaptations of means for carrying this
principle into practical effect.
The Invention is illustrated on the accompanying Drawings in Figures 1 to 10,
of which Figures 1 to 4 are sectional elevations; Figures 5 to 7, plans; and Figures 8
to 10, detailed views in clevation.
In constructing cans or receptacles 1 for containing and conveying milk according
to this Invention I prefer to make them of sheet-tin, or other suitable metal, and of
a cylindrical shape, see Figures 1, 2, 3, 4, and 7, in lieu of as hitherto of a tapering
or conical shape, forasmuch as it allows of the storage and conveyance of a greater
quantity of milk in a can, and of the can being easily and thoroughly cleansed;
But this shape of can is not essential to the Invention. At its top or at an upper
part however I somewhat bulge the can outwardly or inwardly as at 2, Figures
1 and 4, or I form it with an equivalent inner projecting rim 2, Figures 2, 3, and 7,
on which the lid or cover of the can rests when placed loosely in the can.
The peculiarity of the construction of the lid or cover coustitutes a distinguishing

page_text: feature of this Invention, inasmuch as it is the principal means of enabling the
especial object of the Invention to be carried practically into effect.
Its construction I will now proceed to describe. The cover is formed of two
superposed discs 3, 4, stamped from sheet metal or cast in malleable iron, and of a
diameter somewhat less than that of the top hoop or mouth or opening 5 of the can,
the flanges or outer parts 6 of which discs are turned away from each other, so as
to make a V groove when placed in juxtaposition, see Figures 1, 2, and 4. In this
groove or between the bevilled or angular flanges 61 place an elastic or extensible
ring or band 7.
I make the upper disc 4 of a rounded conical shape highest near
the middle, and I make the lower disc 3 of a rounded or flattened conical shape,
see Figures 1, 2, and 4, and when in position in the can this latter disc rests
directly upon the surface of the milk, which is otherwise retained by the can 1.
Between the discs 3, 4, I make a suitable recess or air space 8, which may be open
to the atmosphere through openings or apertures 9, in the disc 4, see Figures 2 and 6.
I also provide the dise 3 centrally with an upwardly projecting screw stud 10,
which passes through a central hole 11 made in the disc 4, above which it engages
with a thumbscrew 12, Figures 1, 4, and 5, or with a screwed nut 13, Figures 2
and 6, which may be turned by a key or spanner 14, Figure S. Or I form in the
mouth of the can, see Figures 3 and 7, recesses 15 and inclined under bearing
pieces 16, and provide the cover with a cross piece 17 which fits under the head 18
of the stud 10, and the arms of which drop into the recesses 15 of the can, see
lotted lines, Figure 7, and may then be turned under the inclined pieces 16, see
full lines, same Figure, by a key or spanner 19, Figures 9 and 10.
When in use the can is filled up to the rim with milk, and the cover or lid is
then placed loosely in position, see Figures 1 and resting upon the said rim and
the milk; the thumbscrew 12, screwed nut 13, or cross piece 17 is then turned as
above indicated, and this forces the discs 3, 4, closer together and distends the elastic
or extensible ring 7 tightly against the inner circumference of the mouth of the
can 1, see Figure 4, effectually scaling the liquid contents from contact with the
external air. Any air between the discs 3, 4, or immediately under the lower
one 3, escapes at the same time through the air space 8 and openings 9.
By the combination of these improvements the following advantages constituting
material objects of this Invention are attained:―The can is made to hold more
milk, and can be easily and thoroughly cleansed. Agitation and churning of the
milk during transit are prevented, the milk being preserved and kept in its natural
state, which is the essential object of the Invention, and loss is avoided; and there
is obtained a greater facility in moving the cans about and in packing them, as they
can be arranged in any position.
This Invention can be adapted to and used in combination with smaller cans or
receptacles used for containing condensed milk or other alimentary matters.
Having now particularly described and ascertained the nature and object of my
said Invention, together with the manner in which I carry the same into practico,
I would remark in conclusion that I claim as of my Invention, the above described
improvements in and connected with cans or receptacles for containing and
conveying milk, substantially as described and as illustrated on the accompanying
Drawings.
In witness whereof, I, the said William Poole, have herounto set my hand
and seal, this Twenty-first day of September, in the year of our Lord Oue
1
WILLIAM POOLE. (L.S.)