ÜCL 13, 1953
«
" J, D, BROWN
PICNIC
JUG
2,655,255
--
Filed Aug. 20, 1948
ATTORNEY
Patented Oct. 13, -1953
2,655,255
UNITED ASTATES PATENT OFFICE
2,655,255
PlCNIC JUG
Joseph D. Brown, Eastchester, N. Y., assigner to
Poloron Products, Inc., a corporation of New
York
Application August 20, 1948,» Serial No. ¿45.389
3. Claims.
1
invention relates
The present
to picnic jugs
and is more particularly directed’toward picnic
jugs so constructed as to keep the contents hot
or -cold as desired over long periods.
Picnic jugs as ordinarily constructed are of
one gallon capacity. When filled with liquids
or foods at a high» temperature, which generally
is not much >above 190° F., the jug and food
(Cl'. 206-4)
possible with the same sized thermal jugs on
the market.
'
The new picnic jug, has a metal liner made
out of a bottom stamping Ill and a top stamp
ing II seamed together'as indicated at I2, and
a long neck or a filling spout I3 is secured~ to
the liner top as indicated at I4 so as to provide
lan inwardly extending flange. The top oi’ the
cool toward the ambient temperature. Owing
filling spout or neck I3 issecured to a thread
to the high diiîerential between the initial tem
ed cap receiving ring I 5'. This ring in turn is
perature and the ambient temperature, and to
secured to a top casing member I6 by a seam
the fact that foods at temperatures below about
indicated at I‘I. The lower edge of the top
140° F. are too cool to s_erve as hot foods, the
casing member I6 is secured to a cylindrical
jugs heretofore in use have been eiîective to
casing member I8 by a seam indicated at I9.
keep food sensibly7 hot for a period of about 15 The bottom of the casing member I8 is secured
three to four hours. When the jug is used to
to a casing bottom '2U by a seam indicatedat
store cold foods, the foods 'are seldom put in
' 2|. Before the casing parts are seamed together,
at temperatures less than 35° F. Up to about
a ñlling of insulatingY material such as fiber
55° F., foods are sensibly cool or cold foods.
glass wool,y as indicated at 22, is provided. The
Owing to the much smaller temperature dif
linsulation thickness at a is 1%", at b is 2",
ferential between that of cold rfoods -and the
and atcisz'ß”.
ambient temperature, such jugs have been ef
Prior art jugs with the same or a similar
fective to keep foods sensibly cold for periods
liner, Ia shorter cylindrical lcasing member of
in the neighborhood of six hours. Where ice
vless diameter, and similar top and bottom stamp
can be added, longer cold storage is possible.
ings, have insulation thickness at a' of 3A", at
The further object ofthe present invention
b' of 2", and c' of 1/2".
is to provide a picnic jug with a plug and set
` The neck ror filling spout receives an insulat
of nested cups which can be carried in the fill
ing filler made up of -a plug member >3l) and
ing spout or neck and are suitable for providing
three cups 3|, 32 and 33.` The plug member is
thermal insulation when placed in the jug and
made of a cup-shaped stamping 34, a closure
are suitable for use as drinking cups when re
moved.
'I'he accompanying drawings show, for pur
plateY 35 and has an Vinsulating filling.
The
seamed edge 35’ rests on the ñange I4. The
stamping 34 and the cups are alike. They have
covered side walls 3’6, reducing shoulders 31 and
poses of illustrating the present invention, an
embodiment in which the invention may take 35 cylindrical side walls 38. Insulating rings 39
form, it being understood that the drawings are
are received about the walls 38. The parts are
illustrative of the invention rather than limit
so proportioned as to be loosely received in the
ing the same.
c
neck. The maximum diameter of the cups is
In the accompanying drawings:
somewhat less than the inside diameter of theA
Figure 1 is a vertical sectional View through 40 neck so as to avoid substantial thermal contact.
a thermal jug;
The nested walls are out of contact with one
Figure 2 is a horizontal sectional view on the
another and the insulating rings 39 separate
line 2-2 of Figure 1; and
the metal bottoms. These rings also provideY
Figure 3 is a fragmentary sectional view at an
insulation to protect the user’s lingers when
enlarged scale.
so that the foods are kept sensibly hot or sensi
The cap
40 holds the filler tightly in place.
Thus it is possible to double the useful hot
or cold storage period of such jugs by adding
bly cold, as the case may be, for approximately
Iabout 1A” more insulation at the sides and an
The present invention contemplates a picnic
jug of the usual gallon capacity and arranged
45 holding the cup lilled with hot liquid.
twice the period formerly available. `Such jugs 50 average of 21/2" more insulation at the top, and
are suitable for storing hot foods for periods
up to eight hours and cold foods for periods
of ten to eleven hours. This makes it possible
employing a thermal plug in the lon-gV neck made
available by the greatly increased thickness of
top insulation. The weight of the jug is only
slightly increased.
to have hot or cold foods, as the case may be.
over much longer periods than was heretofore 55 V Since it is obvious that the invention may be
2,655,255
,
embodied in other forms and constructions with
in the scope of the claims, I wish it to be
understood that the particular form shown is
but one of these forms, and various modifica
tions and changes being possible, I do not other
wise limit myself in any way with respect there
to.
What is claimed is:
f
'
4
3. A picnic jug for storing hot or cold foods
and keeping the same hot or cold over extended
periods, comprising a metal cylindrical food con
taining liner having a flat bottom and a flat top
provided with a ñlling opening, an upwardly ex
tending tubular metal neck secured to the liner
about the opening, the neck having an internally
extending nange Where it joins the liner and
1. An insulating ñller for the neck or spout of
carrying an outer, downwardly extending, thread
a picnic jug comprising a plug formed of an 10 ed cap-receiving ring, an outer cylindrical casing
inverted, cup shaped sheet metal piece with
having a side spaced from the liner side wall, a
conical walls below a reducing shoulder and
closed flat bottom and a ñat top secured to the
cylindrical walls above the shoulder, a closure
cap receiving ring, fibrous insulating material
plate across the bottom of the sheet metal piece,
between the casing and the liner and neck, the
insulation filling the intervening space, and an 15 thickness of the insulation between the bottoms
insulating ring about the cylindrical walls, and
being substantially twice the thickness of the in
a plurality of cups of the same size and shape
sulation between the sides to offer greater resist
as the cup shaped piece and carrying similar in
ance to heat transmission to or from the bottom
sulating rings, the cylindrical walls axially spac
of the liner, the thickness of the insulating mate
ing both the conical walls and the cup bottoms 20 rial between the tops being substantially three
to keep them out of contact and reduce thermal
times the thickness of the insulation between the
transmission from one cup to the next cup.
sides to oñ‘er still greater resistance to heat
2. A picnic jug for storing hot or cold foods
transmission to or from the top of the liner, a
and keeping the same hot or cold over extended
closed, insulation filled, plug having upwardly
periods, comprising a metal cylindrical food con 25 converging side walls and a flange resting on the
taining liner having a flat bottom and a flat top
I'irst ñange, a plurality of metal cups nested with
provided with a filling opening, an upwardly ex
one another and with the plug, the plug and each
tending tubular metal neck secured to the liner
of the cups carrying an insulating ring which
about the opening, the neck having an internally
forms contact with the adjacent cups to avoid
extending ñange where it joins the liner and 30 metal to metal contact, and a cap threaded on
carrying an outer, downwardly extending, thread
the ring and bearing on the uppermost cup to
ed cap-receiving ring, an outer cylindrical casing
hold the filler against the flange.
having a side spaced from the liner side wall, a
JOSEPH D. BROWN.
closed flat bottom and a nat top secured to the
cap receiving ring, fibrous insulating material 35
References Cited in the ille of this patent
between the casing and the liner and neck, the
UNITED STATES PATENTS
thickness of the insulation between the bottoms
Number
Name
Date
being substantially twice the thickness of the in
358,732
Clisbee ___________ __ Mar. 1, 1887
sulation between the sides to offer greater resist
377,603
Damm ____________ __ Feb. 7, 1888
ance to heat transmission to or from the bottom 40
905,449
Morton ___________ __ Dec. 1, 1908
of the liner, the thickness of the .insulating ma
terial between the tops being substantially three
times the thickness of the insulation between the
sides to offer still greater resistance to heat
transmission to or from the top of the liner, a
closed plug having upwardly converging side walls
and a flange resting on the ñrst flange and ñlled
with insulation, a plurality of metal cups nested
with one another and with the plug, and a cap
threaded on the ring and bearing on the upper
most cup to hold the ñller against the flange.
1,145,998
1,610,390
1,750,334
2,038,763
2,184,336
Kibele ___________ __ July 13,
Smith ____________ __ Dec. 14,
Stern ____________ __ Mar. 11,
Schellens ________ __ Apr. 28,
Devine ___________ __ Dec. 26,
1915
1926
1930
1936
1939
FOREIGN PATENTS
Number
52,061
Country
I
Date
Sweden ____ _______ June 28, 1922