US2564843A - Insulated container - Google Patents

Description

Aug 21, 1951 J. L. HEMP 2,564,843

- I INSULATED CONTAINER Filed March 28, 1949 2 Sheets-Sheet l Patented Aug. 21, 1951 UNITED STATES PATENT.

INSULATED CONTAINER Joseph L. Hemp, Macomb, Ill., assignor to Hemp and Company, Incorporated, Macomb, IlL, a corporation of Illinois Application March 28, 1949, Serial No. 83,794

4 Claims. (01. 220-45) This invention relates to insulated containers of the type having an inner metal container or liner and a metal outer spaced casing, there being insulation material in the space between the inner liner and the outer casing or jacket.

An important object of the present invention is the provision of an insulated container having improved means for operatively connecting the inner liner and the outer jacket together to effect a tight seal therebetween without any metal to metal contact.

Another important object of the invention resides in the provision of a new and novel connection between the inner liner and the outer jacket to suspend the inner liner from the outer jacket.

A further object resides in the provision of suspending the inner liner by its neck to the outer jacket at its upper end by the use of sealing gaskets engaging and surrounding parts of the inner liner and the outer jacket.

A still further object resides in the formation of an improved fluid tight non-metal contact at the upper end of the container.

Numerous other objects and advantages will be apparent throughout the progress of the specification which follows. a

The accompanying drawings illustrate a selected embodiment of the invention, and the views therein are as follows:

Fig. 1 is an elevational view of the improved container;

Fig. 2 is a longitudinal vertical sectional view thereof;

Fig. 3 is a fragmentary elevational view of the inner liner at the top or neck thereof;

Fig. 4 is a view similar to Fig. 3 but showing a gasket arranged in the groove and resting on a shoulder at the neck;

Fig. 5 is a view similar to Figs. 3 and 4 but showing the manner in which the jacket or outer casing is mounted over the inner liner and supported on the gasket, parts being broken away and other parts being shown in section for the sake of clearness; and

Fig. 6 is a view similar to Fig. 5 but showing the outer jacket or casing in place, and an addi-' tional gasket seated on an upper surface of the outer jacket and in sealing relationship with a turned edge on the neck of the inner liner.

Referring to the drawings, I designates a cylindrically shaped inner liner which acts as a container for fluid, foodstuffs, or any other material which is to be kept cold or hot in the usual manner characteristic of insulated containers such as insulated jugs, bottles and the like.

The inner liner 1 is preferably made in two parts, a lower part 2 and an upper part 3', which parts are connected together by a fluid tight seam or joint 4, Fig. 2. The upper part 3, which is circular in cross section, converges upwardlyin curved lines and terminates in an upstanding tubular neck 5 which is hollow so that the liner may be filled through that end and so that access may be had to the interior of the container. The neck 5 is reduced near its upper end to provide a tubular extension 6 on the neck, and Providing an annular shoulder I, The extreme upper end of the extension 6 on the neck is turned outwardly to form a smooth inner surface .8 and to provide a curved or turned annular flange 9. The formation of, the annular shoulder l, and the annular flange 9, forms an annular recess Ill be.- tween the bottom of the flange 9 andv the top of the shoulder 1.

The inner liner 1 is adapted to be covered by an outer casing or jacket II, Figs. 1 and 2, which surrounds the inner liner I, and this jacket is spaced from the liner to provide a space I 2 completely thereabouts to receive insulating material I3. The outer jacket ll may be made in two parts, a lower part l4 and an upper part I5, which parts are connected together by a tight seam or joint [6. The upper part l5 of the jacket I l converges upwardly in rounded curves and terminates at its upper end in a relatively short tubular hollow neck I1, Figs. 1, 2 and 6. The material at the neck I! is bent inwardly to provide an annular flange l8 defining an opening which is about the same size in diameter as the exterior diameter of the curved flang 9 at the top of the liner neck 5, the said opening being such that it will just fit over the flange 9. The upper part l5 of the jacket H is adapted to be applied over the tubular extension .6 on the neck .5 and be sup,- ported by the annular shoulder 1. The outer jacket I I is adapted to have tight sealing engagement with the innerliner I.

The sealing between the inner line 1 and the part l5 of the outer jacket H is accomplished by first applying .a flexible rubber, or rubberlike gasket or ring [9 in the groove ID, the gasket l9 resting upon the shoulder 1. The annular flange 18 on the .short neck ll of the outer jacket H rests upon the top of the gasket 19 when the upper part l5 of the jacket is positioned in place as shown in Fig. 5. The gasket 19 therefore arranged between the annular shoulder 1, upon which it rests, and the underside of the annular flange 18 of the jacket neck I 1 which it Su ports, Figs. 5 and 6. A second gasket .20 is stretched over the extension 6 of the neck 5 and received in the annular groove l0, occupying the space be tween the upper surface of the jacket flange l8 and the underside of the .crimped flange 9 of the liner l.

The vertical size of the annular groove [.0 between the shoulder 1 and the flange 9 is less than the normal thickness of the gaskets l9 and 2.0 and the metal flange l8; therefore, :the gaskets are pressed .or squashed whereby the outer edge 21 of the dense 9 will :bite into, and be recessed into, the top of the gasket 20 as indicated at 22, Fig. 6. Also, the flange I8 of the jacket will be pressed-or forced into. the lower surface of the upper gasket 20 and the upper surface of the lower gasket [9 as indicated at 23 and 24 respectively, Fig. 6. The crimped edge 2| of the flange 8 is embedded into the upper surface of the upper gasket 20 and forms a tight seal between the extension 6 of the neck and the gasket. The upper surface of the flange l8 of the jacket is embedded in the underside of the gasket 20, thus making a tight seal between these two members. The underside of the flange I8 is embedded in the upper surface of the lower gasket I9 whereby a tight seal is formed therebetween. Also, the lower gasket i9 i pressed or squashed between the flange l8 and the shoulder 1 whereby a tight seal is made. The gaskets l9 and 20 thus make a tight seal between the inner liner l and the outer jacket II and prevent fluid from getting into the space between the jacket and the liner. This seal is always rendered tight because the weight of the liner l is carriedby its neck by which the inner liner is suspended from the outer jacket H. The weight of the liner, therefore, maintains a pressure against the gaskets l9 and 20, and the shoulder l, and creates a constant urging action to effect a tight seal. Of course, when the liner is filled, the weight of the liner is greater and the seal is made or becomes tighter.

The lower part l4 of the jacket is applied last and is secured to the upper'part of the liner by a crimping operation to provide the connecting sealed joint [6, Figs. 1 and 2.

The liner l is preferably made of metal and coated, at least on the inside, with vitreous enamel before assembly. The jacket II also is adapted to be made of metal and may be coated with any suitable material such as paint, lacquer or the like. i

The invention provides aliquid-tight seal between the inner liner and the outer jacket and provides for suspending the inner liner from the outer jacket. The container of the invention may be easily and economically assembled and manufactured, and the manner of suspension permits dispension of the conventional bottom block of rubber or wood. This bottom block was required in previous containers to maintain a seal between the two members by effecting an expansion action between the bottom of the liner and the upper surface of the bottom of the jacket. The present container is therefore less expensive than other types of containers, and provides for a better seal between the inner and outer members.

Changes may be made in the form, construction and arrangement of the parts without departing from the spirit of the invention or sacrificing any of its advantages, and the right is hereby reserved to make all such changes as fall fairly within the scope of the claims which follow.

The invention is hereby claimed as follows:

1. An insulated container comprising an inner liner terminating in an upwardly extending hollow neck, a tubular extension of reduced size extending upwardly from said neck and forming a peripheral shoulder, an outwardly extending flange about the upper edge of the extension and forming a peripheral groove between the flange and shoulder, a gasket about the neck and supported by said shoulder, an outer jacket surrounding the body of the liner and terminating in a reduced neck having an inwardly projecting flange defining an opening of a size slightly larger than the diameter of the neck extension so as to receive the extension, said latter flange restv 4 ing on said gasket, and a second gasket hugging the neck and arranged between the upper surface of the said latter flange and the under surface of the annular flange on the neck extension,

whereby the liner is suspended by its neck from the jacket.

2. An insulated container comprising an inner liner terminating in an upwardly extending hollow neck, a tubular extension of reduced size extending upwardly from said neck and forming a peripheral shoulder, an outwardly extending flange about the upper edge of the extension and forming a peripheral groove between the flange and shoulder, a gasket about the neck and supported by said shoulder, an outer jacket surrounding the body of the liner and terminating in a reduced neck having an inwardly projecting flange defining an opening of a size slightly larger than the diameter of the neck extension so as to receive the extension, said latter flange resting on said gasket, and a second gasket hugging the neck and arranged between the upper surface of the said latter flange and the under surface of the annular flange on the neck extension, whereby the liner is suspended by its neck from the jacket, the thickness of the flange on the jacket and the gaskets being greater than the space between the flange on the neck and the shoulder whereby the neck flange will bite into a gasket and the flange on the jacket will be embedded-between the gaskets to make a tight seal between the said necks.

3. An insulated container comprising an outer jacket having an inturned rim defining a central opening at its upper end, an inner liner having an upstanding neck, an outwardly extending flange on the neck above said rim, and a resilient gasket disposed between and in engagement with said flange and rim, said inner liner having an exterior shoulder formed on said neck, and an annular gasket on the shoulder in position underlying and engaging said rim.

4. An insulated container comprising an outer jacket having an inturned rim defining a central opening at its upper end, an inner liner having an upstanding neck, an outwardly extending flange on the neck above said rim, and a resilient gasket disposed between and in engagement with said flange and rim, said inner liner having an exterior shoulder formed on said neck in position facing said flange, and a gasket engaging the shoulder and underlying the rim of the jacket, the space between the shoulder and the neck flange being less than the combined thickness of the jacket rim, and the gaskets so that the jacket rim will be pressed between the gaskets and be embedded therein and the neck flange will bite into a gasket to form a tight seal.

JOSEPH L. HEMP.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,029,364 Hartwig June 11, 1912 1,549,417 Hendrich Aug. 11, 1925 1,555,399 Bultman Sept. 29, 1925 1,771,123 Johnson July 22, 1930 1,993,730 Carpenter Mar. 12, 1935 2,072,630 Ferry Mar. 2, 1937 2,349,099 Kircher May 16, 1944 2,367,409 Kuhler Jan. 16, 1945 2,376,064 Knapp May 15, 1945 2,481,664 Hemp Sept. 13, 1949

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