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1. GB458867 - Improvements in or relating to boxes or containers for paste or solid or semi-solid materials

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[ EN ]
RE 8 SERVE C Opy
PATENT SPECIFICATION
458,867 Complete Specification Left: Jan 10, 1936.
Complete Specification Accepted: Dec 29, 1936.
PROVISIONAL SPECIFICATION in or relating to Boxes or Containers for Paste or Solid or Semi-solid Materials We, S C Lom Ax LIMITED, of Barking By-Pass Road, Barking, Essex, a British Company, Manufacturers, and HARRY IKNI Gi TSso N, of Beccles Drive, Barking, Essex, a, British Subject, do hereby declare the nature of this invention to be as follows:This invention relates to boxes or containers for paste or solid or semi-solid materials, and particularly for dentifrice, paste or cream for toilet or other purposes.
Such containers are usually made of aluminium or other metal, moulded material, glass, earthenware, or china, and consist of two parts, the box or container proper and its lid, which fits more or less closely on the top of the container.
A disadvantage of such containers, particularly where the contents are applied or used with a moistened brush, as in the case of dentifrice, is that the moistened contents are liable to run over the edge of the container and after the lid has been applied, to dry and bind the lid and container together, thereby rendering the subsequent removal of the lid very difficult.
It has been proposed to minimise this drawback by giving the lid, of metal or other slightly resilient material, a loose fit and providing it with a number of inward projections adapted to engage the outside of the container in order to retain the lid on the box, but leave a free space 85 between the inside of the lid and the outside of the container at all places except where the projections engage the side of the container.
According to the present invention, we 40 provide the side of the lid with a number of inward indentations or projections and the side of the box with a ciicumferential groove so that when the lid is applied to the container the inward pro 45 jections will spring over the upper edge thereof and engage loosely in the groove below In this way while there will be no tight fit between the lid and container, the lid will remain in position without 50 any strain or distortion, and a clearance between the lid and container will be provided which will prevent any binding together of these parts -by any slight overflow of the contents of' the container 55 The groove on the container need not necessarily be continuous, but may be in two or more sections, but we prefer a continuous groove.
To provide or increase elasticity, the 60 side of the lid may be slotted.
Dated this 20th day of July, 1935.
DICKER, POLLAK, MERCER, TENCH & MEYER, Chartered Patent Agents, to 23, Holborn, London, E C 1, Agents for the Applicants.
COMPLETE SPECIFICATION
Improvements in or relating to Boxes or Containers for Paste or Solid or Semi-solid Materials We, S C LOMAX L Ir Mr ITD, of Barking By-Pass Road, Barking, Essex, a-British Company, Manufacturers, and HARRY KNIGHTSON, of Beceles Drive, Barking, Essex, a British Subject, 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:The present invention relates to boxes or containers for paste or solid or semisolid materials such as dentifrice and paste or cream for toilet or other pur 75 poses Such containers are usually made of aluminium or other metal, moulded material, glass, earthenware or china, and consist of two parts, the box or container 80 base, and its lid which fits more or less Application Date: July 20, 1935 No 20709/35.
Improvements 458,867 closely around the top of the container base.
A disadvantage to which such containers are liable, particularly when the contents become moistened in use, as in the case of dentifrice, is that part of the contents tend to run over the upper edge of the container base and become pressed between the outer edge thereof and the inner edge of the lid when the latter is re-applied so that the lid and container base become to some extent bound together when the overflow of dentifrice or other material dries thus rendering the subsequent removal of the lid very difficult Moreover, the deposit of the contents in dried state upon the outer edge of the container base also renders difficult the continued Te-application of the lid thereto, and, when the lid is made of aluminium or similar metal it becomes stretched to an extent which destroys the initially good fit thereof with the container base.
It has previously been proposed to minimise these drawbacks by loosely fitting the lid, when of metal or other slightly resilient material, around the container base and providing the rim or wall of the lid with a number of inward projections adapted closely to engage the container base in order to retain the lid thereon, while leaving a clearance between the lid and the outside of the container base at all parts thereof excepting where the projections engage the wall of the base Arrangements of this kind obviously cannot obviate the drawbacks above Teferred to, while d further disadvantage is to be found therein when such container lids are constructed of aluminium or similar metallic alloys or other more or less inert material in that the constant tension applied to the free parts of the wall of the lid by reason of prolonged engagement of the projections or the lugs thereof with the container base tends permanently to distort the lid from its true, usually circular shape, thereby rendering difficult the ready reapplication of the lid to the base.
The object of the present invention is to obviate entirely the drawbacks and disadvantages above referred to and thus psoduce a lidded container or box of the kind set forth in which the overflow of the contents, within the reasonable limits usually to be expected, has no effect upon the application of the lid to the container base or the predetermined fit of the one with the other while in the normal functioning of these members they will remain undistorted and the lid readily applicable to and removable frorn the container base.
According to the present invention in a container of the kind in which the side or rim of the lid is provided with inward projections spaced apart around its periphery and adapted to engage in a peripheral groove or grooves or corresponding indentations in the wall of the container base so that when the lid is applied to the base the inward projections of the lid spring over the upper portions of the base and enter the said groove or grooves or indentations, the parts of the container are so arranged that -the lid, when in operative position is loosely coupled to the base without constant tension between the coupled parts and without contact between the rim of the lid and the utpper peripheral edge of the base.
A constructional embodiment of xthe invention is hereinafter described with reference to the accompanying drawings in which:
Fig 1 is an elevational view of an assembled, circular box or container such as is commonly used to enclose a dentifrice block, constructed according to the present invention.
Fig 2 is an elevational view of the base of the container with the lid removed.
Fig 3 is a fragmentary, under plan view of the container lid shown in Fig.
1.
Fig 4 is a fragmentary plan view of 100 the container base shown in Fig 2, and Fig 5 is a fragmentary detail view drawn to a larger scale to show in sectional elevation the manner in'which the lid and base of the container shown in 105 the preceding views engage.
Ref erring to the drawings the container comprises a base 10 in the shape of a shallow, circular box, preferably formed from a single disc of metal such as 110 aluminium, having a, low wall 13 ewtending round its perimeter and an outwardly projecting roll or flange 11 which forms the base edge thereof The upper circumferential edge of the base wall 13 is 115 bull-nosed or outwardly rounded while the bottom 14 of the box or base is formed with inwardly projecting ribs 15 which engage the dentifrice block (shown in chain dot outline in Fig 2) and prevent 120 the latter from rotating when for instance a brush is applied thereto A continuous circumferential groove 12 is formed in the base wall 13 so as to extend inwardly thereof immediately above the 125 flange 11 while the juncture between the upper edge of the groove 12 and rounded, upper edge of the base provides a slight circumferential ridge 12 a S The lid 16 shown in Figs 1,_ 3-and 5, 130 458,867 has a slightly domed top 17 and a circumferential wall or rim 18 and is also formed preferably from a single disc of aluminium or other metal A circumS ferential, outwardly projecting bead 19 is formed in the wall 18 adjacent the upper edge thereof to provide a fnger grip whereby to handle the lid while adjacent the lower, circumferential edge of the wall 18, inwardly extending projections 20 are provided The projections 20 preferably are formed by indenting the wall 18, and enter the groove 12 in the base 10 when the lid 16 is applied to the base Holes 21 are provided in the wall of the lid to ventilate the contents of the container.
In applying the lid to the base, the lower edge of the former slides over the rounded uppet edge of the latter while the slight resiliency of the metal from which the lid is constructed permits the projections 20 to spring over the rounded upper portion of the base and enter the groove 12 in which they atre loosely held by the ridge 12 a As shown in Fig 5 the projections 20 are located in the groove 12 with a clearance between the opposed surfaces while the lower, circumferential edge of the lid rests upon the rolled lower edge 11 of the base of the container In this way although there is no tight fit between any parts of the lid and container base the lid will remain in position without strain or tension being applied thereto while the clearance between the lid projections 20 and wall of the groove 12 will prevent binding together of these parts by slight overflow of the contents of the container.
The groove 12 in the container wall need not be continuous and may be in two or more sections but we prefer to use a continuous groove.
To permit or facilitate the slight outward displacement of the requisite portions of the wall or walls of the lid in its application to and removal from the container base as above described, the wall or walls may be slotted ' Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we