US2522480A - Watertight container - Google Patents

Description

Sept. 12, 1950 L. A. DAVIS 2,522,480

WATERTIGHT CONTAINER Filed March 17, 1949 Patented Sept. 12, 1950 WATERTI'GHT CONTAINER Lionel Archibald Davis, Lindfield, near Sydney, New South Wales; Australia Application March 17, 1949, Serial No. 81,960 In Australia January 16, 1948 1 Claim. 1

This invention relates to containers such as purses and pouches which may be made from sheet-rubber or like material, and has been devised to provide a receptacle of this nature wherein small personal possessions can be safely enclosed against access of water.

Several receptacles of this general description are already on the market the majority being intended to preserve tobacco against the effect of exposure to atmosphere. Such known receptacles are generally made of Waterproof silken material or of what is commonly known as sheet latex and though they serve the purpose for which they are intended, are not suiiiciently effective entirely to prevent water from entering them when partly or wholly submerged.

The primary object of this invention is to provide a watertight purse or pouch which can be conveniently inserted in a small pocket on or in a swimming costume, there to preserve with safety such small valuable possessions as a bather does not care to put aside when entering the water.

According to one construction of my improved container, it is made from a sheet of semi-transparent plastic material and is of substantially rectangular form, the edges of its front and rear walls being completely sealed by the application of heat and pressure, or by a strip of rubber tape vulcanized over them.

Adjacent to and parallel with one edge of the container so formed there is a comparatively long narrow slot which serves as a mouth. Close to said slot and also parallel with it a permanent crease or indentation is formed in the wall of the container, and other parallel creases or indentations may be formed at intervals away from said slot.

The first of the aforesaid creases creates a flap wherein the said slot lies, and in use said flap is intended to be turned down onto the container, and the turned down portion then folded over along the additional creases or indentations to ensure that the mouth is fully enclosed. A fastener which may have corrugated arms or projections adapted to grip the material of the container is then slipped or sprung over the folded portion to maintain it in that condition. If desired said fastener may be anchored to the container.

The aforesaid creases may be formed by folding the container into what will be its closed condition and then further vulcanizing the folded portion.

understood and readily carried into practical effect, reference is now made to the drawing accompanying and forming part of this complete specification.

Figure 1 comprises the front elevation of my improved purse or pouch in its preferred form.

Figure 2 is a perspective viewof the purse or pouch partly opened after removal of the fastening means.

Figure 3 is a side elevation of the complete device illustrated by Figure 1.

Figure 4 is a perspective View of the fastener as indicated in Figures 1 and 3.

The purse or pouch illustrated is formed from a sheet or sheets of semi-transparent plastic material and is completely sealed along its several edges. Adjacent to the edge 5 and parallel therewith there is a slot 6 constituting a mouth in the front wall 1 of the device, and surrounding this slot there is aflixed a strip ll which may be of the same plastic material or of rubber or like material.

The primary purpose of this strip 8 is to ensure that pressure exerted by the fastener, hereinafter described, will be applied uniformly around the slot 6 constituting the mouth, rather than on the folds and edges of the purse or pouch {and the secondary object of said strip 8 is to reinforce the edges of said slot 6.

Permanent creases 9 and Ill are formed in the body of the purse or pouch. These can be produced conveniently in the course of manufacture by folding the top portion of the purse or pouch into the form illustrated in Figure 3 and then subjecting the folded portion to further heat.

The upper crease 9 creates a flap H. To close the purse or pouch this flap H is turned down onto the front wall 1 of the device, and the folded portion is then turned down along the lower crease ID. The fastener illustrated by Figure 4 which comprises a spring metal clip l2, or some other suitable type of fastener, is then pushed over the folded portion of the purse or pouch, to completely seal its mouth.

Although it has been mentioned that the purse or pouch illustrated is of semi-transparent plasti material, it will be understood that it may be of other rubber-like material which would not be transparent at all. But a degree of transparency is advantageous in that it enables the owner to see at a glance whether he has in fact inserted in the purse or pouch the items likely to be required by him.

It is emphasized also that while two permanent But in order that the invention may be fully creases are indicated in the purse or pouch illus- 3 trated, there may be but one crease. The fastener in this instance would require to exert additional pressure uniformly along the flap II to compensate for the absence of the second fold.

What I claim is:

A watertight pouch to be sealed by a spring clip comprising: a pouch of sheet rubber or the like sealed at each margin and formed with at least two permanent creases determining fold lines; one wall of said pouch having a mouth in the form of a slot parallel with and between a margin of the pouch and one of said creases; the slit provided wall having excess thickness about each side and each end of said slit, to provide sealing pressure when a clip is applied.

LIONEL ARCHIBALD DAVIS.

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

UNITED STATES PATENTS Number Name Date 1,219,232 Blumberg Mar. 13, 1917 1,753,458 Willis 1 Apr. 8, 1930 1,942,246 Johaneson Jan. 2, 1934 2,171,730 Lobl Sept. 5, 1939 2,372,391 Pick Mar. 27, 1945 2,453,940 Slobotkin Nov. 16, 1948

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